COLLECTION: Fixing queue collection and unit tests.

This patch includes following functionality:
1) Fixed the invalid handling of the pointers in the collection
when last element is removed from the collection.
2) Added unit test to verify the fix.
3) Modified the three unit test to be verbose on demand.
4) Switched the main of the unit test to use array of functions
rather than big if statement.

4 files changed, 478 insertions, 298 deletions

diff --git a/common/collection/collection.c b/common/collection/collection.c
index e3644e4e..cde5db5d 100644
--- a/common/collection/collection.c
+++ b/common/collection/collection.c
@@ -436,6 +436,7 @@ int col_insert_item_into_current(struct collection_item *collection,
                                 if (col_find_property(collection, item->property, 0, 0, 0, &parent)) {
                                     current = parent->next;
                                     parent->next = current->next;
+                                    if (header->last == current) header->last = parent;
                                     col_delete_item(current);
                                     header->count--;
                                 }
@@ -449,6 +450,7 @@ int col_insert_item_into_current(struct collection_item *collection,
                                     TRACE_INFO_NUMBER("Current:", (unsigned)(parent->next));
                                     current = parent->next;
                                     parent->next = current->next;
+                                    if (header->last == current) header->last = parent;
                                     col_delete_item(current);
                                     header->count--;
                                 }
@@ -463,7 +465,7 @@ int col_insert_item_into_current(struct collection_item *collection,
 
     switch (disposition) {
     case COL_DSP_END:       /* Link new item to the last item in the list if there any */
-                            if (header->last != NULL) header->last->next = item;
+                            if (header->count != 0) header->last->next = item;
                             /* Make sure we save a new last element */
                             header->last = item;
                             header->count++;
@@ -539,7 +541,7 @@ int col_insert_item_into_current(struct collection_item *collection,
                             }
                             else if(idx >= header->count - 1) {
                                 /* In this case add to the end */
-                                if (header->last != NULL) header->last->next = item;
+                                header->last->next = item;
                                 /* Make sure we save a new last element */
                                 header->last = item;
                             }
@@ -638,7 +640,7 @@ int col_extract_item_from_current(struct collection_item *collection,
                             *ret_ref = parent->next;
                             parent->next = NULL;
                             /* Special case - one data element */
-                            if (header->count == 2) header->last = NULL;
+                            if (header->count == 2) header->last = collection;
                             else header->last = parent;
                             break;
 
@@ -646,7 +648,7 @@ int col_extract_item_from_current(struct collection_item *collection,
                             *ret_ref = collection->next;
                             collection->next = (*ret_ref)->next;
                             /* Special case - one data element */
-                            if (header->count == 2) header->last = NULL;
+                            if (header->count == 2) header->last = collection;
                             break;
 
     case COL_DSP_BEFORE:    /* Check argument */
@@ -711,7 +713,7 @@ int col_extract_item_from_current(struct collection_item *collection,
                                 *ret_ref = collection->next;
                                 collection->next = (*ret_ref)->next;
                                 /* Special case - one data element */
-                                if (header->count == 2) header->last = NULL;
+                                if (header->count == 2) header->last = collection;
                             }
                             /* Index 0 stands for the first data element.
                              * Count includes header element.
diff --git a/common/collection/collection_queue_ut.c b/common/collection/collection_queue_ut.c
index 81fb6335..1d143228 100644
--- a/common/collection/collection_queue_ut.c
+++ b/common/collection/collection_queue_ut.c
@@ -28,6 +28,15 @@
 #include "collection_queue.h"
 #include "collection_tools.h"
 
+typedef int (*test_fn)(void);
+
+int verbose = 0;
+
+#define COLOUT(foo) \
+    do { \
+        if (verbose) foo; \
+    } while(0)
+
 
 int queue_test(void)
 {
@@ -40,7 +49,7 @@ int queue_test(void)
 
     TRACE_FLOW_STRING("queue_test","Entry.");
 
-    printf("\n\nQUEUE TEST!!!.\n\n\n");
+    COLOUT(printf("\n\nQUEUE TEST!!!.\n\n\n"));
 
     if((error = col_create_queue(&queue)) ||
        (error = col_enqueue_str_property(queue, "item1","value 1" ,0)) ||
@@ -56,7 +65,7 @@ int queue_test(void)
         return error;
     }
 
-    col_debug_collection(queue,COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(queue,COL_TRAVERSE_DEFAULT));
 
     error = col_get_collection_count(queue, &count);
     if (error) {
@@ -67,7 +76,7 @@ int queue_test(void)
 
     count--;
 
-    printf("Rotate the queue.\n");
+    COLOUT(printf("Rotate the queue.\n"));
 
     for (i = 0; i < count; i++) {
         if ((error = col_dequeue_item(queue, &item)) ||
@@ -76,26 +85,124 @@ int queue_test(void)
             col_destroy_collection(queue);
             return error;
         }
-        col_debug_collection(queue,COL_TRAVERSE_DEFAULT);
+        COLOUT(col_debug_collection(queue,COL_TRAVERSE_DEFAULT));
     }
 
     col_destroy_collection(queue);
     TRACE_FLOW_NUMBER("queue_test. Returning", error);
 
-    printf("\n\nEND OF QUEUE TEST!!!.\n\n\n");
+    COLOUT(printf("\n\nEND OF QUEUE TEST!!!.\n\n\n"));
 
     return error;
 }
 
-/* Main function of the unit test */
 
-int main(int argc, char *argv[])
+int empty_test(void)
 {
+    struct collection_item *queue = NULL;
+    struct collection_item *item = NULL;
+    int i;
+    unsigned count;
     int error = EOK;
 
-    printf("Start\n");
-    if ((error = queue_test())) printf("Failed!\n");
-    else printf("Success!\n");
+    TRACE_FLOW_STRING("empty_test","Entry.");
+
+    COLOUT(printf("\n\nEMPTY QUEUE TEST!!!.\n\n\n"));
+
+    if((error = col_create_queue(&queue)) ||
+       (error = col_enqueue_str_property(queue, "item1","value 1" ,0)) ||
+       (error = col_enqueue_int_property(queue, "item2", -1)) ||
+       (error = col_enqueue_unsigned_property(queue, "item3", 1))) {
+        printf("Failed to enqueue property. Error %d\n", error);
+        col_destroy_collection(queue);
+        return error;
+    }
+
+    COLOUT(col_debug_collection(queue,COL_TRAVERSE_DEFAULT));
+
+    error = col_get_collection_count(queue, &count);
+    if (error) {
+        printf("Failed to get count. Error %d\n", error);
+        col_destroy_collection(queue);
+        return error;
+    }
+
+    count--;
+
+    COLOUT(printf("Empty the queue.\n"));
+
+    for (i = 0; i < count; i++) {
+        if ((error = col_dequeue_item(queue, &item))) {
+            printf("Failed to dequeue or enqueue items. Error %d\n", error);
+            col_destroy_collection(queue);
+            return error;
+        }
+        COLOUT(col_debug_collection(queue,COL_TRAVERSE_DEFAULT));
+    }
+
+    COLOUT(printf("Add elemebts again.\n"));
+    if((error = col_create_queue(&queue)) ||
+       (error = col_enqueue_str_property(queue, "item1","value 1" ,0)) ||
+       (error = col_enqueue_int_property(queue, "item2", -1)) ||
+       (error = col_enqueue_unsigned_property(queue, "item3", 1))) {
+        printf("Failed to enqueue property. Error %d\n", error);
+        col_destroy_collection(queue);
+        return error;
+    }
+
+    COLOUT(col_debug_collection(queue,COL_TRAVERSE_DEFAULT));
+
+    error = col_get_collection_count(queue, &count);
+    if (error) {
+        printf("Failed to get count. Error %d\n", error);
+        col_destroy_collection(queue);
+        return error;
+    }
+
+    count--;
+
+    COLOUT(printf("Empty the queue again.\n"));
+
+    for (i = 0; i < count; i++) {
+        if ((error = col_dequeue_item(queue, &item))) {
+            printf("Failed to dequeue or enqueue items. Error %d\n", error);
+            col_destroy_collection(queue);
+            return error;
+        }
+        COLOUT(col_debug_collection(queue,COL_TRAVERSE_DEFAULT));
+    }
+
+    col_destroy_collection(queue);
+    TRACE_FLOW_NUMBER("empty_test. Returning", error);
+
+    COLOUT(printf("\n\nEND OF QUEUE TEST!!!.\n\n\n"));
 
     return error;
 }
+
+
+/* Main function of the unit test */
+int main(int argc, char *argv[])
+{
+    int error = 0;
+    test_fn tests[] = { queue_test,
+                        empty_test,
+                        NULL };
+    test_fn t;
+    int i = 0;
+
+    if ((argc > 1) && (strcmp(argv[1], "-v") == 0)) verbose = 1;
+
+    printf("Start\n");
+
+    while ((t = tests[i++])) {
+        error = t();
+        if (error) {
+            printf("Failed!\n");
+            return error;
+        }
+    }
+
+    printf("Success!\n");
+    return 0;
+}
diff --git a/common/collection/collection_stack_ut.c b/common/collection/collection_stack_ut.c
index ebf62fc6..e0633b7b 100644
--- a/common/collection/collection_stack_ut.c
+++ b/common/collection/collection_stack_ut.c
@@ -28,6 +28,16 @@
 #include "collection_stack.h"
 #include "collection_tools.h"
 
+typedef int (*test_fn)(void);
+
+int verbose = 0;
+
+#define COLOUT(foo) \
+    do { \
+        if (verbose) foo; \
+    } while(0)
+
+
 
 int stack_test(void)
 {
@@ -40,7 +50,7 @@ int stack_test(void)
 
     TRACE_FLOW_STRING("stack_test", "Entry.");
 
-    printf("\n\nSTACK TEST!!!.\n\n\n");
+    COLOUT(printf("\n\nSTACK TEST!!!.\n\n\n"));
 
     if ((error = col_create_stack(&stack)) ||
         (error = col_push_str_property(stack, "item1", "value 1", 0)) ||
@@ -56,9 +66,9 @@ int stack_test(void)
         return error;
     }
 
-    col_debug_collection(stack, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(stack, COL_TRAVERSE_DEFAULT));
 
-    printf("Swapping last two items by popping and pushing them back.\n");
+    COLOUT(printf("Swapping last two items by popping and pushing them back.\n"));
 
     if ((error = col_pop_item(stack, &item1)) ||
         (error = col_pop_item(stack, &item2))) {
@@ -67,14 +77,14 @@ int stack_test(void)
         return error;
     }
 
-    printf("\nPopped two last items.\n");
-    col_debug_collection(stack, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\nPopped two last items.\n"));
+    COLOUT(col_debug_collection(stack, COL_TRAVERSE_DEFAULT));
 
-    printf("\nLast item.\n");
-    col_debug_item(item1);
+    COLOUT(printf("\nLast item.\n"));
+    COLOUT(col_debug_item(item1));
 
-    printf("\nPrevious item.\n");
-    col_debug_item(item2);
+    COLOUT(printf("\nPrevious item.\n"));
+    COLOUT(col_debug_item(item2));
 
     if ((error = col_push_item(stack, item1)) ||
         (error = col_push_item(stack, item2))) {
@@ -83,13 +93,13 @@ int stack_test(void)
         return error;
     }
 
-    printf("\n\nPushed two items again in reverse order.\n\n");
+    COLOUT(printf("\n\nPushed two items again in reverse order.\n\n"));
 
-    col_debug_collection(stack, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(stack, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(stack);
     TRACE_FLOW_NUMBER("stack_test. Returning", error);
 
-    printf("\n\nEND OF STACK TEST!!!.\n\n");
+    COLOUT(printf("\n\nEND OF STACK TEST!!!.\n\n"));
 
     return error;
 }
@@ -98,11 +108,24 @@ int stack_test(void)
 
 int main(int argc, char *argv[])
 {
-    int error = EOK;
+    int error = 0;
+    test_fn tests[] = { stack_test,
+                        NULL };
+    test_fn t;
+    int i = 0;
+
+    if ((argc > 1) && (strcmp(argv[1], "-v") == 0)) verbose = 1;
 
     printf("Start\n");
-    if ((error = stack_test())) printf("Failed!\n");
-    else printf("Success!\n");
 
-    return error;
+    while ((t = tests[i++])) {
+        error = t();
+        if (error) {
+            printf("Failed!\n");
+            return error;
+        }
+    }
+
+    printf("Success!\n");
+    return 0;
 }
diff --git a/common/collection/collection_ut.c b/common/collection/collection_ut.c
index 86620550..92d9d0c4 100644
--- a/common/collection/collection_ut.c
+++ b/common/collection/collection_ut.c
@@ -28,6 +28,16 @@
 #include "collection.h"
 #include "collection_tools.h"
 
+typedef int (*test_fn)(void);
+
+int verbose = 0;
+
+#define COLOUT(foo) \
+    do { \
+        if (verbose) foo; \
+    } while(0)
+
+
 
 int ref_collection_test(void)
 {
@@ -40,8 +50,8 @@ int ref_collection_test(void)
 
     TRACE_FLOW_STRING("ref_collection_test", "Entry.");
 
-    printf("\n\nREF TEST!!!.\n\n\n");
-    printf("Creating PEER collection.\n");
+    COLOUT(printf("\n\nREF TEST!!!.\n\n\n"));
+    COLOUT(printf("Creating PEER collection.\n"));
 
     if ((error = col_create_collection(&peer, "peer", 0)) ||
         (error = col_add_str_property(peer, NULL, "hostname", "peerhost.mytest.com", 0)) ||
@@ -53,7 +63,7 @@ int ref_collection_test(void)
         return error;
     }
 
-    printf("Creating SOCKET collection.\n");
+    COLOUT(printf("Creating SOCKET collection.\n"));
 
     if ((error = col_create_collection(&socket, "socket", 0)) ||
         (error = col_add_int_property(socket, NULL, "id", 1)) ||
@@ -65,10 +75,10 @@ int ref_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
 
-    printf("Adding PEER collection to SOCKET collection as a reference named PEER\n");
+    COLOUT(printf("Adding PEER collection to SOCKET collection as a reference named PEER\n"));
 
     /* Embed peer host into the socket2 as reference */
     error = col_add_collection_to_collection(socket, NULL, "peer", peer, COL_ADD_MODE_REFERENCE);
@@ -79,14 +89,14 @@ int ref_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
 
-    printf("About to destroy PEER\n");
+    COLOUT(printf("About to destroy PEER\n"));
     col_destroy_collection(peer);
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
 
-    printf("About to extract PEER\n");
+    COLOUT(printf("About to extract PEER\n"));
     error = col_get_collection_reference(socket, &peer, "peer");
     if (error) {
         col_destroy_collection(socket);
@@ -94,11 +104,11 @@ int ref_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(peer);
 
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
 
     error = col_get_collection_reference(socket, &socket2, NULL);
     if (error) {
@@ -107,14 +117,14 @@ int ref_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket2, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket2, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(socket);
-    col_debug_collection(socket2, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket2, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(socket2);
 
     TRACE_FLOW_NUMBER("ref_collection_test. Returning", error);
 
-    printf("\n\nEND OF REF TEST!!!.\n\n\n");
+    COLOUT(printf("\n\nEND OF REF TEST!!!.\n\n\n"));
 
     return error;
 
@@ -138,7 +148,9 @@ int single_collection_test(void)
     }
 
     error = col_add_str_property(handle, NULL, "property 1!", "some data", 0);
-    if (error) printf("Expected error adding bad property to collection %d\n", error);
+    if (error) {
+        COLOUT(printf("Expected error adding bad property to collection %d\n", error));
+    }
     else {
         printf("Expected error but got success\n");
         return -1;
@@ -157,18 +169,21 @@ int single_collection_test(void)
         col_destroy_collection(handle);
         return error;
     }
-    printf("Created collection\n");
+
+    COLOUT(printf("Created collection\n"));
 
     /* Traverse collection */
-    error = col_debug_collection(handle, COL_TRAVERSE_DEFAULT);
-    if (error) {
-        printf("Error debugging collection %d\n", error);
-        return error;
-    }
-    error = col_print_collection(handle);
-    if (error) {
-        printf("Error printing collection %d\n", error);
-        return error;
+    if (verbose) {
+        error = col_debug_collection(handle, COL_TRAVERSE_DEFAULT);
+        if (error) {
+            printf("Error debugging collection %d\n", error);
+            return error;
+        }
+        error = col_print_collection(handle);
+        if (error) {
+            printf("Error printing collection %d\n", error);
+            return error;
+        }
     }
 
     col_destroy_collection(handle);
@@ -187,8 +202,8 @@ int add_collection_test(void)
 
     TRACE_FLOW_STRING("add_collection_test", "Entry.");
 
-    printf("\n\nADD TEST!!!.\n\n\n");
-    printf("Creating PEER collection.\n");
+    COLOUT(printf("\n\nADD TEST!!!.\n\n\n"));
+    COLOUT(printf("Creating PEER collection.\n"));
 
     if ((error = col_create_collection(&peer, "peer", 0)) ||
         (error = col_add_str_property(peer, NULL, "hostname", "peerhost.mytest.com", 0)) ||
@@ -200,7 +215,7 @@ int add_collection_test(void)
         return error;
     }
 
-    printf("Creating SOCKET collection.\n");
+    COLOUT(printf("Creating SOCKET collection.\n"));
 
     if ((error = col_create_collection(&socket, "socket", 0)) ||
         (error = col_add_int_property(socket, NULL, "id", 1)) ||
@@ -212,10 +227,10 @@ int add_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
 
-    printf("Adding PEER collection to SOCKET collection as a reference named PEER\n");
+    COLOUT(printf("Adding PEER collection to SOCKET collection as a reference named PEER\n"));
 
     /* Embed peer host into the socket2 as reference */
     error = col_add_collection_to_collection(socket, NULL, "peer", peer, COL_ADD_MODE_REFERENCE);
@@ -226,10 +241,10 @@ int add_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(peer);
-    col_debug_collection(socket, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(socket);
     TRACE_FLOW_NUMBER("add_collection_test. Returning", error);
     return error;
@@ -239,9 +254,9 @@ int copy_cb(struct collection_item *item,
             void *ext_data,
             int *skip)
 {
-    printf("INSIDE Copy Callback\n");
-    col_debug_item(item);
-    printf("Passed in data: %s\n", (char *) ext_data);
+    COLOUT(printf("INSIDE Copy Callback\n"));
+    COLOUT(col_debug_item(item));
+    COLOUT(printf("Passed in data: %s\n", (char *) ext_data));
     if (strcmp(col_get_item_property(item, NULL), "id") == 0) *skip = 1;
     return EOK;
 }
@@ -264,8 +279,8 @@ int mixed_collection_test(void)
 
     TRACE_FLOW_STRING("mixed_collection_test", "Entry.");
 
-    printf("\n\nMIXED TEST!!!.\n\n\n");
-    printf("Creating PEER collection.\n");
+    COLOUT(printf("\n\nMIXED TEST!!!.\n\n\n"));
+    COLOUT(printf("Creating PEER collection.\n"));
 
     if ((error = col_create_collection(&peer, "peer", 0)) ||
         (error = col_add_str_property(peer, NULL, "hostname", "peerhost.mytest.com", 0)) ||
@@ -277,9 +292,9 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
 
-    printf("Creating HOST collection.\n");
+    COLOUT(printf("Creating HOST collection.\n"));
 
     if ((error = col_create_collection(&host, "host", 0)) ||
         (error = col_add_str_property(host, NULL, "hostname", "myhost.mytest.com", 0)) ||
@@ -292,9 +307,9 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(host, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(host, COL_TRAVERSE_DEFAULT));
 
-    printf("Creating SOCKET1 collection.\n");
+    COLOUT(printf("Creating SOCKET1 collection.\n"));
 
     if ((error = col_create_collection(&socket1, "socket1", 0)) ||
         (error = col_add_int_property(socket1, NULL, "id", 1)) ||
@@ -307,8 +322,8 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket1, COL_TRAVERSE_DEFAULT);
-    printf("Creating a copy of SOCKET1 collection named SOCKET2.\n");
+    COLOUT(col_debug_collection(socket1, COL_TRAVERSE_DEFAULT));
+    COLOUT(printf("Creating a copy of SOCKET1 collection named SOCKET2.\n"));
 
     error = col_copy_collection(&socket2, socket1, "socket2", COL_COPY_NORMAL);
     if (error) {
@@ -319,8 +334,8 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket2, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket2, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
 
     error = col_copy_collection_with_cb(&socket3, socket1, "socket3",
                                         COL_COPY_FLATDOT, copy_cb, (void *)foo);
@@ -333,10 +348,10 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket3, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket3, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(socket3);
 
-    printf("Adding PEER collection to SOCKET2 collection as a reference named PEER2\n");
+    COLOUT(printf("Adding PEER collection to SOCKET2 collection as a reference named PEER2\n"));
 
     /* Embed peer host into the socket2 as reference */
     error = col_add_collection_to_collection(socket2, NULL, "peer2", peer, COL_ADD_MODE_REFERENCE);
@@ -349,9 +364,9 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket2, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket2, COL_TRAVERSE_DEFAULT));
 
-    printf("Creating an EVENT collection.\n");
+    COLOUT(printf("Creating an EVENT collection.\n"));
 
     /* Construct event */
     error = col_create_collection(&event, "event", 0);
@@ -364,9 +379,9 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(event, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(event, COL_TRAVERSE_DEFAULT));
 
-    printf("Adding HOST to EVENT.\n");
+    COLOUT(printf("Adding HOST to EVENT.\n"));
 
     /* Add host to event */
     error = col_add_collection_to_collection(event, NULL, NULL, host, COL_ADD_MODE_REFERENCE);
@@ -379,9 +394,9 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(event, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(event, COL_TRAVERSE_DEFAULT));
 
-    printf("Embed SOCKET1 into EVENT.\n");
+    COLOUT(printf("Embed SOCKET1 into EVENT.\n"));
     /* Donate socket1 to event */
     /* Socket1 should not be used after this */
     error = col_add_collection_to_collection(event, NULL, NULL, socket1, COL_ADD_MODE_EMBED);
@@ -394,20 +409,20 @@ int mixed_collection_test(void)
         return error;
     }
 
-    printf("Traverse one level:\n");
-    col_debug_collection(event, COL_TRAVERSE_ONELEVEL);
-    printf("Traverse ignore subcollections:\n");
-    col_debug_collection(event, COL_TRAVERSE_IGNORE);
-    printf("Traverse normal:\n");
-    col_debug_collection(event, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(socket1, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("Traverse one level:\n"));
+    COLOUT(col_debug_collection(event, COL_TRAVERSE_ONELEVEL));
+    COLOUT(printf("Traverse ignore subcollections:\n"));
+    COLOUT(col_debug_collection(event, COL_TRAVERSE_IGNORE));
+    COLOUT(printf("Traverse normal:\n"));
+    COLOUT(col_debug_collection(event, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(socket1, COL_TRAVERSE_DEFAULT));
 
-    printf("SOCKET1 MUST NO BE USED AFTER THIS POINT!!!\n");
+    COLOUT(printf("SOCKET1 MUST NO BE USED AFTER THIS POINT!!!\n"));
     socket1 = NULL;
 
-    printf("Add collection PEER as PEER1 to subcollection SOCKET1 of the EVENT.\n");
+    COLOUT(printf("Add collection PEER as PEER1 to subcollection SOCKET1 of the EVENT.\n"));
 
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
 
     error = col_add_collection_to_collection(event, "socket1", "peer1", peer, COL_ADD_MODE_CLONE);
     if (error) {
@@ -419,9 +434,9 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(event, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(event, COL_TRAVERSE_DEFAULT));
 
-    printf("Add property named TIMEOUT to PEER collection.\n");
+    COLOUT(printf("Add property named TIMEOUT to PEER collection.\n"));
 
     /* Add new property to the peer collection */
     error = col_add_int_property(peer, NULL, "timeout", 5);
@@ -434,9 +449,9 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(socket2, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(socket2, COL_TRAVERSE_DEFAULT));
 
-    printf("Add property named DELAY to PEER1 collection.\n");
+    COLOUT(printf("Add property named DELAY to PEER1 collection.\n"));
 
     error = col_add_int_property(event, "peer1", "delay", 10);
     if (error) {
@@ -448,10 +463,10 @@ int mixed_collection_test(void)
         return error;
     }
 
-    col_debug_collection(event, COL_TRAVERSE_DEFAULT);
-    col_debug_collection(host, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(event, COL_TRAVERSE_DEFAULT));
+    COLOUT(col_debug_collection(host, COL_TRAVERSE_DEFAULT));
 
-    printf("Check if property PEER1.DELAY is in the EVENT collection.\n");
+    COLOUT(printf("Check if property PEER1.DELAY is in the EVENT collection.\n"));
 
     /* Check if the property in the collection */
     found = 0;
@@ -465,26 +480,32 @@ int mixed_collection_test(void)
         return error;
     }
 
-    if (found == 1) printf("Property is found!\n");
-    else printf("Error property is not found!\n");
+    if (found == 1) {
+        COLOUT(printf("Property is found!\n"));
+    }
+    else {
+        COLOUT(printf("Error property is not found!\n"));
+    }
 
 
-    col_print_item(event, "peer1!IPv6");
-    col_print_item(event, "event!socket1!peer1!IPv6");
-    col_print_item(event, "event!peer1!IPv6");
-    col_print_item(event, "speer1!IPv6");
-    col_print_item(event, "eer1!IPv6");
-    col_print_item(event, "!peer1!IPv6");
-    col_print_item(event, "t!peer1!IPv6");
+    COLOUT(col_print_item(event, "peer1!IPv6"));
+    COLOUT(col_print_item(event, "event!socket1!peer1!IPv6"));
+    COLOUT(col_print_item(event, "event!peer1!IPv6"));
+    COLOUT(col_print_item(event, "speer1!IPv6"));
+    COLOUT(col_print_item(event, "eer1!IPv6"));
+    COLOUT(col_print_item(event, "!peer1!IPv6"));
+    COLOUT(col_print_item(event, "t!peer1!IPv6"));
 
     /* Traverse collection */
-    error = col_print_collection2(event);
-    if (error) {
-        printf("Error printing collection %d\n", error);
-        return error;
+    if (verbose) {
+        error = col_print_collection2(event);
+        if (error) {
+            printf("Error printing collection %d\n", error);
+            return error;
+        }
     }
 
-    printf("Delete property PEER1!DELAY from the EVENT collection.\n");
+    COLOUT(printf("Delete property PEER1!DELAY from the EVENT collection.\n"));
 
     error = col_delete_property(event, "peer1!delay", COL_TYPE_ANY, COL_TRAVERSE_DEFAULT);
     if (error) {
@@ -496,49 +517,56 @@ int mixed_collection_test(void)
         return error;
     }
 
-    printf("Printing EVENT.\n");
+    COLOUT(printf("Printing EVENT.\n"));
 
     /* Traverse collection */
-    error = col_print_collection2(event);
-    if (error) {
-        printf("Error printing collection %d\n", error);
-        return error;
+    if (verbose) {
+        error = col_print_collection2(event);
+        if (error) {
+            printf("Error printing collection %d\n", error);
+            return error;
+        }
     }
-    printf("Debugging EVENT.\n");
 
-    error = col_debug_collection(event, COL_TRAVERSE_DEFAULT);
-    if (error) {
-        printf("Error printing collection %d\n", error);
-        return error;
+    COLOUT(printf("Debugging EVENT.\n"));
+    if (verbose) {
+        error = col_debug_collection(event, COL_TRAVERSE_DEFAULT);
+        if (error) {
+            printf("Error printing collection %d\n", error);
+            return error;
+        }
     }
-
-    printf("Cleanup of the collections PEER, HOST and SOCKET2.\n");
+    COLOUT(printf("Cleanup of the collections PEER, HOST and SOCKET2.\n"));
 
     /* Destroy a referenced collection */
     col_destroy_collection(peer);
     col_destroy_collection(host);
     col_destroy_collection(socket2);
 
-    printf("Printing EVENT again.\n");
+    COLOUT(printf("Printing EVENT again.\n"));
 
     /* Traverse collection again - peer should still be there */
-    error = col_print_collection(event);
-    if (error) {
-        col_destroy_collection(event);
-        printf("Error printing collection %d\n", error);
-        return error;
+    if (verbose) {
+        error = col_print_collection(event);
+        if (error) {
+            col_destroy_collection(event);
+            printf("Error printing collection %d\n", error);
+            return error;
+        }
     }
 
-    printf("Debugging EVENT again.\n");
+    COLOUT(printf("Debugging EVENT again.\n"));
 
-    error = col_debug_collection(event, COL_TRAVERSE_DEFAULT);
-    if (error) {
-        col_destroy_collection(event);
-        printf("Error printing collection %d\n", error);
-        return error;
+    if (verbose) {
+        error = col_debug_collection(event, COL_TRAVERSE_DEFAULT);
+        if (error) {
+            col_destroy_collection(event);
+            printf("Error printing collection %d\n", error);
+            return error;
+        }
     }
 
-    printf("Attempt to add property to a referenced collection.\n");
+    COLOUT(printf("Attempt to add property to a referenced collection.\n"));
 
     error = col_add_int_property(event, "host", "session", 500);
     if (error) {
@@ -547,7 +575,7 @@ int mixed_collection_test(void)
         return error;
     }
 
-    printf("Attempt to delete non-existent property.\n");
+    COLOUT(printf("Attempt to delete non-existent property.\n"));
 
     /* Can't delete non exitent property */
     error = col_delete_property(event, "host.host", COL_TYPE_ANY, COL_TRAVERSE_DEFAULT);
@@ -556,7 +584,7 @@ int mixed_collection_test(void)
         printf("Error was able to delete property that does not exist.\n");
         return -1;
     }
-    else printf("Expected error %d\n", error);
+    else COLOUT(printf("Expected error %d\n", error));
 
     /* Set collection class */
     error = col_set_collection_class(event, 2);
@@ -572,20 +600,22 @@ int mixed_collection_test(void)
         printf("Error was NOT able to get class.\n");
         return error;
     }
-    else printf("Class = %d\n", class);
+    else COLOUT(printf("Class = %d\n", class));
 
-    if (col_is_of_class(event, 2)) printf("Class mathced!\n");
+    if (col_is_of_class(event, 2)) {
+        COLOUT(printf("Class mathced!\n"));
+    }
     else {
         col_destroy_collection(event);
         printf("Error - bad class.\n");
         return -1;
     }
 
-    printf("Done. Cleaning...\n");
+    COLOUT(printf("Done. Cleaning...\n"));
 
     col_destroy_collection(event);
 
-    printf("Exit.\n");
+    COLOUT(printf("Exit.\n"));
     TRACE_FLOW_NUMBER("add_collection_test. Returning", EOK);
     return EOK;
 }
@@ -610,7 +640,7 @@ int iterator_test(void)
     uint64_t hash1, hash2;
     int rwnd = 0;
 
-    printf("\n\n==== ITERATOR TEST ====\n\n");
+    COLOUT(printf("\n\n==== ITERATOR TEST ====\n\n"));
 
     if ((error = col_create_collection(&initial, "strater", 0)) ||
         (error = col_create_collection(&peer, "peer", 0)) ||
@@ -711,13 +741,13 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nCollection (traverse default):\n\n");
-    col_debug_collection(peer, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\n\nCollection (traverse default):\n\n"));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_DEFAULT));
 
-    printf("\n\nCollection (traverse flat):\n\n");
-    col_debug_collection(peer, COL_TRAVERSE_FLAT | COL_TRAVERSE_END);
+    COLOUT(printf("\n\nCollection (traverse flat):\n\n"));
+    COLOUT(col_debug_collection(peer, COL_TRAVERSE_FLAT | COL_TRAVERSE_END));
 
-    printf("\n\nIteration (1):\n\n");
+    COLOUT(printf("\n\nIteration (1):\n\n"));
 
     do {
 
@@ -740,17 +770,17 @@ int iterator_test(void)
         col_get_iterator_depth(iterator, &idepth);
 
 
-        printf("%*sProperty (%s), type = %d, data size = %d depth = %d idepth = %d\n",
+        COLOUT(printf("%*sProperty (%s), type = %d, data size = %d depth = %d idepth = %d\n",
                 depth * 4,  "",
                 col_get_item_property(item, NULL),
                 col_get_item_type(item),
                 col_get_item_length(item),
                 depth,
-                idepth);
+                idepth));
 
         if ((strcmp(col_get_item_property(item, NULL), "id")==0) &&
            (*((int *)(col_get_item_data(item))) == 1)) {
-            printf("\n\nFound property we need - go up!!!\n\n\n");
+            COLOUT(printf("\n\nFound property we need - go up!!!\n\n\n"));
 
             /* This should work! */
             error = col_iterate_up(iterator, 1);
@@ -762,31 +792,31 @@ int iterator_test(void)
             }
 
             if ((error = col_modify_str_item(item, "id2", "test", 0)) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_str_item(item, NULL, "test", 2)) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_binary_item(item, NULL, binary_dump, sizeof(binary_dump))) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_bool_item(item, NULL, 1)) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_int_item(item, "int", 1)) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_long_item(item, "long", 1000000000L)) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_ulong_item(item, "ulong", 4000000000UL)) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_unsigned_item(item, "unsigned", 4000000000U)) ||
-                (error = col_debug_item(item)) ||
+                ((verbose) && (error = col_debug_item(item))) ||
                 (error = col_modify_double_item(item, "double", -1.1)) ||
-                (error = col_debug_item(item))) {
+                ((verbose) && (error = col_debug_item(item)))) {
                 printf("Failed to change property.\n");
                 col_unbind_iterator(iterator);
                 col_destroy_collection(peer);
                 return error;
             }
 
-            printf("Item name: %s\n", col_get_item_property(item, NULL));
-            printf("Item hash: %lu\n", (unsigned long int)col_get_item_hash(item));
+            COLOUT(printf("Item name: %s\n", col_get_item_property(item, NULL)));
+            COLOUT(printf("Item hash: %lu\n", (unsigned long int)col_get_item_hash(item)));
             error = col_modify_item_property(item, "new_name");
             if (error) {
                 printf("We expected success but got error %d\n", error);
@@ -795,21 +825,21 @@ int iterator_test(void)
                 return error;
             }
             len = 0;
-            printf("Item name: %s\n", col_get_item_property(item, &len));
-            printf("Item hash: %lu\n", (unsigned long int)col_get_item_hash(item));
-            printf("Item length: %d\n", len);
+            COLOUT(printf("Item name: %s\n", col_get_item_property(item, &len)));
+            COLOUT(printf("Item hash: %lu\n", (unsigned long int)col_get_item_hash(item)));
+            COLOUT(printf("Item length: %d\n", len));
 
             len = 0;
             hash1 = col_make_hash("new_name", 0, &len);
-            printf("String name: %s\n", "new_name");
-            printf("String hash: %lu\n", (unsigned long int)hash1);
-            printf("String length: %d\n", len);
+            COLOUT(printf("String name: %s\n", "new_name"));
+            COLOUT(printf("String hash: %lu\n", (unsigned long int)hash1));
+            COLOUT(printf("String length: %d\n", len));
 
             len = 0;
             hash2 = col_make_hash("new_name_suffix", 8, &len);
-            printf("String name: %.*s\n", len, "new_name_suffix");
-            printf("String hash: %lu\n", (unsigned long int)hash2);
-            printf("String length: %d\n", len);
+            COLOUT(printf("String name: %.*s\n", len, "new_name_suffix"));
+            COLOUT(printf("String hash: %lu\n", (unsigned long int)hash2));
+            COLOUT(printf("String length: %d\n", len));
             if (hash1 != hash2) {
                 printf("Hash calculation failed\n");
                 col_unbind_iterator(iterator);
@@ -818,9 +848,9 @@ int iterator_test(void)
             }
 
             hash2 = col_make_hash("new_name", 8, &len);
-            printf("String name: %.*s\n", len, "new_name");
-            printf("String hash: %lu\n", (unsigned long int)hash2);
-            printf("String length: %d\n", len);
+            COLOUT(printf("String name: %.*s\n", len, "new_name"));
+            COLOUT(printf("String hash: %lu\n", (unsigned long int)hash2));
+            COLOUT(printf("String length: %d\n", len));
             if (hash1 != hash2) {
                 printf("Hash calculation failed\n");
                 col_unbind_iterator(iterator);
@@ -842,7 +872,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nIteration (2 - flat):\n\n");
+    COLOUT(printf("\n\nIteration (2 - flat):\n\n"));
 
     do {
 
@@ -860,12 +890,12 @@ int iterator_test(void)
 
         depth = 0;
         col_get_item_depth(iterator, &depth);
-        printf("%*s", depth * 4, "");
-        col_debug_item(item);
+        COLOUT(printf("%*s", depth * 4, ""));
+        COLOUT(col_debug_item(item));
 
         if ((strcmp(col_get_item_property(item, NULL), "queue") == 0) &&
             (rwnd == 0)) {
-            printf("Rewinding iterator...\n");
+            COLOUT(printf("Rewinding iterator...\n"));
             col_rewind_iterator(iterator);
             rwnd++;
         }
@@ -884,7 +914,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nIteration (3 flat with end):\n\n");
+    COLOUT(printf("\n\nIteration (3 flat with end):\n\n"));
 
     do {
 
@@ -902,8 +932,8 @@ int iterator_test(void)
 
         depth = 0;
         col_get_item_depth(iterator, &depth);
-        printf("%*s", depth * 4, "");
-        col_debug_item(item);
+        COLOUT(printf("%*s", depth * 4, ""));
+        COLOUT(col_debug_item(item));
 
     }
     while(1);
@@ -919,7 +949,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nIteration (4 default with end):\n\n");
+    COLOUT(printf("\n\nIteration (4 default with end):\n\n"));
 
     do {
 
@@ -937,8 +967,8 @@ int iterator_test(void)
 
         depth = 0;
         col_get_item_depth(iterator, &depth);
-        printf("%*s", depth * 4, "");
-        col_debug_item(item);
+        COLOUT(printf("%*s", depth * 4, ""));
+        COLOUT(col_debug_item(item));
 
     }
     while(1);
@@ -955,7 +985,7 @@ int iterator_test(void)
     }
 
 
-    printf("\n\nIteration (5 show headers and references with end):\n\n");
+    COLOUT(printf("\n\nIteration (5 show headers and references with end):\n\n"));
 
     do {
 
@@ -973,8 +1003,8 @@ int iterator_test(void)
 
         depth = 0;
         col_get_item_depth(iterator, &depth);
-        printf("%*s", depth * 4, "");
-        col_debug_item(item);
+        COLOUT(printf("%*s", depth * 4, ""));
+        COLOUT(col_debug_item(item));
 
     }
     while(1);
@@ -991,7 +1021,7 @@ int iterator_test(void)
     }
 
 
-    printf("\n\nIteration (6 show headers and references no END):\n\n");
+    COLOUT(printf("\n\nIteration (6 show headers and references no END):\n\n"));
 
     do {
 
@@ -1009,8 +1039,8 @@ int iterator_test(void)
 
         depth = 0;
         col_get_item_depth(iterator, &depth);
-        printf("%*s", depth * 4, "");
-        col_debug_item(item);
+        COLOUT(printf("%*s", depth * 4, ""));
+        COLOUT(col_debug_item(item));
 
     }
     while(1);
@@ -1026,7 +1056,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nIteration (7 show headers only no END):\n\n");
+    COLOUT(printf("\n\nIteration (7 show headers only no END):\n\n"));
 
     do {
 
@@ -1044,8 +1074,8 @@ int iterator_test(void)
 
         depth = 0;
         col_get_item_depth(iterator, &depth);
-        printf("%*s", depth * 4, "");
-        col_debug_item(item);
+        COLOUT(printf("%*s", depth * 4, ""));
+        COLOUT(col_debug_item(item));
 
     }
     while(1);
@@ -1062,7 +1092,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nIterate up test:\n\n");
+    COLOUT(printf("\n\nIterate up test:\n\n"));
 
     do {
 
@@ -1084,18 +1114,18 @@ int iterator_test(void)
         col_get_iterator_depth(iterator, &idepth);
 
 
-        printf("%*sProperty (%s), type = %d, data size = %d depth = %d idepth = %d\n",
+        COLOUT(printf("%*sProperty (%s), type = %d, data size = %d depth = %d idepth = %d\n",
                 depth * 4,  "",
                 col_get_item_property(item, NULL),
                 col_get_item_type(item),
                 col_get_item_length(item),
                 depth,
-                idepth);
+                idepth));
 
         if (strcmp(col_get_item_property(item, NULL), "queue") == 0)  {
 
-            printf("\n\nFound property we need - go up!!!\n");
-            printf("Expect bail out of collection processing.\n\n");
+            COLOUT(printf("\n\nFound property we need - go up!!!\n"));
+            COLOUT(printf("Expect bail out of collection processing.\n\n"));
 
             /* This should work! */
             error = col_iterate_up(iterator, 10);
@@ -1120,7 +1150,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nCircled looping:\n\n");
+    COLOUT(printf("\n\nCircled looping:\n\n"));
 
     for (i = 0; i < 200; i++) {
         /* Loop through a collection */
@@ -1133,12 +1163,14 @@ int iterator_test(void)
         }
 
         /* Are we done ? */
-        if (item == NULL) printf("Reached end.\n\n");
+        if (item == NULL) {
+            COLOUT(printf("Reached end.\n\n"));
+        }
         else {
             depth = 0;
             col_get_item_depth(iterator, &depth);
-            printf("%*s", depth * 4, "");
-            col_debug_item(item);
+            COLOUT(printf("%*s", depth * 4, ""));
+            COLOUT(col_debug_item(item));
         }
     }
 
@@ -1153,7 +1185,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nCircled looping with pin:\n\n");
+    COLOUT(printf("\n\nCircled looping with pin:\n\n"));
 
     do {
         /* Loop through a collection */
@@ -1168,7 +1200,7 @@ int iterator_test(void)
         if (strcmp(col_get_item_property(item, NULL), "queue") == 0) {
             /* Make it a new looping point */
             col_pin_iterator(iterator);
-            printf("Found pin point.\n\n");
+            COLOUT(printf("Found pin point.\n\n"));
             break;
         }
         /* Are we done ? */
@@ -1181,8 +1213,8 @@ int iterator_test(void)
         else {
             depth = 0;
             col_get_item_depth(iterator, &depth);
-            printf("%*s", depth * 4, "");
-            col_debug_item(item);
+            COLOUT(printf("%*s", depth * 4, ""));
+            COLOUT(col_debug_item(item));
         }
     }
     while(1);
@@ -1199,12 +1231,14 @@ int iterator_test(void)
         }
 
         /* Are we done ? */
-        if (item == NULL) printf("Reached end.\n\n");
+        if (item == NULL) {
+            COLOUT(printf("Reached end.\n\n"));
+        }
         else {
             depth = 0;
             col_get_item_depth(iterator, &depth);
-            printf("%*s", depth * 4, "");
-            col_debug_item(item);
+            COLOUT(printf("%*s", depth * 4, ""));
+            COLOUT(col_debug_item(item));
         }
     }
 
@@ -1220,7 +1254,7 @@ int iterator_test(void)
         return error;
     }
 
-    printf("\n\nCircled looping with pin (default):\n\n");
+    COLOUT(printf("\n\nCircled looping with pin (default):\n\n"));
 
     do {
         /* Loop through a collection */
@@ -1235,7 +1269,7 @@ int iterator_test(void)
         if (strcmp(col_get_item_property(item, NULL), "queue") == 0) {
             /* Make it a new looping point */
             col_pin_iterator(iterator);
-            printf("Found pin point.\n\n");
+            COLOUT(printf("Found pin point.\n\n"));
             break;
         }
         /* Are we done ? */
@@ -1248,8 +1282,8 @@ int iterator_test(void)
         else {
             depth = 0;
             col_get_item_depth(iterator, &depth);
-            printf("%*s", depth * 4, "");
-            col_debug_item(item);
+            COLOUT(printf("%*s", depth * 4, ""));
+            COLOUT(col_debug_item(item));
         }
     }
     while(1);
@@ -1266,12 +1300,14 @@ int iterator_test(void)
         }
 
         /* Are we done ? */
-        if (item == NULL) printf("Reached end.\n\n");
+        if (item == NULL) {
+            COLOUT(printf("Reached end.\n\n"));
+        }
         else {
             depth = 0;
             col_get_item_depth(iterator, &depth);
-            printf("%*s", depth * 4, "");
-            col_debug_item(item);
+            COLOUT(printf("%*s", depth * 4, ""));
+            COLOUT(col_debug_item(item));
         }
     }
 
@@ -1290,7 +1326,7 @@ int insert_extract_test(void)
     int error = EOK;
     struct collection_item *item = NULL;
 
-    printf("\n\n==== INSERTION TEST ====\n\n");
+    COLOUT(printf("\n\n==== INSERTION TEST ====\n\n"));
 
     if ((error = col_create_collection(&col, "insertion", 0)) ||
         (error = col_insert_str_property(col, NULL, COL_DSP_END,
@@ -1363,11 +1399,11 @@ int insert_extract_test(void)
         return error;
     }
 
-    printf("\n\nCollection:\n\n");
-    col_debug_collection(col, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\n\nCollection:\n\n"));
+    COLOUT(col_debug_collection(col, COL_TRAVERSE_DEFAULT));
 
 
-    printf("\n\n==== EXTRACTION TEST ====\n\n");
+    COLOUT(printf("\n\n==== EXTRACTION TEST ====\n\n"));
 
     if ((error = col_create_collection(&col2, "extraction", 0)) ||
 
@@ -1377,7 +1413,7 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_FRONT,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) ||
 
         (error = col_extract_item(col, NULL, COL_DSP_END,
                                   NULL, 0, 0, &item)) ||
@@ -1385,7 +1421,7 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_END,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) ||
 
         (error = col_insert_str_property(col, NULL, COL_DSP_INDEX,
                                          NULL, 100, COL_INSERT_NOCHECK,
@@ -1397,7 +1433,7 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_END,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) ||
 
         (error = col_extract_item(col, NULL, COL_DSP_BEFORE,
                                   "property0", 0, COL_TYPE_STRING, &item)) ||
@@ -1405,7 +1441,7 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_END,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) ||
 
         (error = col_extract_item(col, NULL, COL_DSP_INDEX,
                                   NULL, 1, 0, &item)) ||
@@ -1413,7 +1449,7 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_END,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) ||
 
         (error = col_extract_item(col, NULL, COL_DSP_NDUP,
                                   "property0", 1, 0, &item)) ||
@@ -1421,7 +1457,7 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_END,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) ||
 
         (error = col_extract_item(col, NULL, COL_DSP_LASTDUP,
                                   "property0", 0, 0, &item)) ||
@@ -1429,7 +1465,7 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_END,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) ||
 
         (error = col_extract_item(col, NULL, COL_DSP_FIRSTDUP,
                                   "property0", 0, 0, &item)) ||
@@ -1437,22 +1473,22 @@ int insert_extract_test(void)
         (error = col_insert_item(col2, NULL, item, COL_DSP_END,
                                  NULL, 0, COL_INSERT_NOCHECK)) ||
 
-        (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT))) {
+        ((verbose) && (error = col_debug_collection(col2, COL_TRAVERSE_DEFAULT)))) {
 
-        printf("ERROR in the EXTRACTION TEST\n");
-        printf("Collection 1\n");
-        col_debug_collection(col, COL_TRAVERSE_DEFAULT);
-        printf("Collection 2\n");
-        col_debug_collection(col2, COL_TRAVERSE_DEFAULT);
+        COLOUT(printf("ERROR in the EXTRACTION TEST\n"));
+        COLOUT(printf("Collection 1\n"));
+        COLOUT(col_debug_collection(col, COL_TRAVERSE_DEFAULT));
+        COLOUT(printf("Collection 2\n"));
+        COLOUT(col_debug_collection(col2, COL_TRAVERSE_DEFAULT));
         col_destroy_collection(col);
         col_destroy_collection(col2);
         return error;
     }
 
-    printf("Collection 1\n");
-    col_debug_collection(col, COL_TRAVERSE_DEFAULT);
-    printf("Collection 2\n");
-    col_debug_collection(col2, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("Collection 1\n"));
+    COLOUT(col_debug_collection(col, COL_TRAVERSE_DEFAULT));
+    COLOUT(printf("Collection 2\n"));
+    COLOUT(col_debug_collection(col2, COL_TRAVERSE_DEFAULT));
 
     col_destroy_collection(col2);
     col_destroy_collection(col);
@@ -1467,51 +1503,51 @@ int delete_test(void)
     struct collection_item *col;
     int error = EOK;
 
-    printf("\n\n==== DELETION TEST 1====\n\n");
+    COLOUT(printf("\n\n==== DELETION TEST 1====\n\n"));
 
     if ((error = col_create_collection(&col, "test", 0)) ||
         (error = col_add_int_property(col, NULL, "tt", 1)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_add_int_property(col, NULL, "test", 1)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_delete_property(col, "test", COL_TYPE_ANY, COL_TRAVERSE_DEFAULT)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_add_int_property(col, NULL, "test", 1)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_delete_property(col, "test", COL_TYPE_ANY, COL_TRAVERSE_DEFAULT)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_add_int_property(col, NULL, "test", 1))) {
         printf("Error in delete test %d\n", error);
         col_destroy_collection(col);
         return error;
     }
 
-    col_debug_collection(col, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(col, COL_TRAVERSE_DEFAULT));
     col_destroy_collection(col);
 
-    printf("\n\n==== DELETION TEST 1 END ====\n\n");
-    printf("\n\n==== DELETION TEST 2====\n\n");
+    COLOUT(printf("\n\n==== DELETION TEST 1 END ====\n\n"));
+    COLOUT(printf("\n\n==== DELETION TEST 2====\n\n"));
 
     if ((error = col_create_collection(&col, "test2", 0)) ||
         (error = col_add_int_property(col, NULL, "tt", 1)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_add_int_property(col, NULL, "test", 1)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_remove_item(col, NULL, COL_DSP_END, NULL, 0, COL_TYPE_ANY)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_add_int_property(col, NULL, "test", 1)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_remove_item_from_current(col, COL_DSP_AFTER, "tt", 0, COL_TYPE_ANY)) ||
-        (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT)) ||
+        ((verbose) && (error = col_debug_collection(col, COL_TRAVERSE_DEFAULT))) ||
         (error = col_add_int_property(col, NULL, "test", 1))) {
         printf("Error in delete test %d\n", error);
         col_destroy_collection(col);
         return error;
     }
 
-    col_debug_collection(col, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(col, COL_TRAVERSE_DEFAULT));
 
-    printf("\n\n==== DELETION TEST 2 END ====\n\n");
+    COLOUT(printf("\n\n==== DELETION TEST 2 END ====\n\n"));
 
 
     col_destroy_collection(col);
@@ -1530,7 +1566,7 @@ int search_test(void)
     int found = 0;
     int error = 0;
 
-    printf("\n\n==== SEARCH TEST ====\n\n");
+    COLOUT(printf("\n\n==== SEARCH TEST ====\n\n"));
 
     if ((error = col_create_collection(&level1, "level1", 0)) ||
         (error = col_create_collection(&level2, "level2", 0)) ||
@@ -1550,7 +1586,7 @@ int search_test(void)
         return error;
     }
 
-    col_debug_collection(level1, COL_TRAVERSE_DEFAULT);
+    COLOUT(col_debug_collection(level1, COL_TRAVERSE_DEFAULT));
 
     error = col_is_item_in_collection(level1, "level1!level2!level3!level4!", COL_TYPE_ANY, COL_TRAVERSE_DEFAULT, &found);
     if (!error) {
@@ -1573,7 +1609,7 @@ int search_test(void)
         printf("Failed to find item [level1!level2!level3!level4!id]. Error %d\n", error);
         return error ? error : ENOENT;
     }
-    else printf("Expected item is found\n");
+    else COLOUT(printf("Expected item is found\n"));
 
 
     found = 0;
@@ -1587,7 +1623,7 @@ int search_test(void)
         printf("Failed to find item [level3!level4!id]. Error %d\n", error);
         return error ? error : ENOENT;
     }
-    else printf("Expected item is found\n");
+    else COLOUT(printf("Expected item is found\n"));
 
     found = 0;
     error = 0;
@@ -1600,7 +1636,7 @@ int search_test(void)
         printf("Failed to find item [level3.packets]. Error %d\n", error);
         return error ? error : ENOENT;
     }
-    else printf("Expected item is found\n");
+    else COLOUT(printf("Expected item is found\n"));
 
     found = 0;
     error = 0;
@@ -1613,7 +1649,7 @@ int search_test(void)
         printf("Failed to find item [level1!level2!stack]. Error %d\n", error);
         return error ? error : ENOENT;
     }
-    else printf("Expected item is found\n");
+    else COLOUT(printf("Expected item is found\n"));
 
     found = 0;
     error = 0;
@@ -1626,14 +1662,14 @@ int search_test(void)
         printf("Failed to find item [level1!level2!level3]. Error %d\n", error);
         return error ? error : ENOENT;
     }
-    else printf("Expected item is found\n");
+    else COLOUT(printf("Expected item is found\n"));
 
     col_destroy_collection(level1);
     col_destroy_collection(level2);
     col_destroy_collection(level3);
     col_destroy_collection(level4);
 
-    printf("\n\n==== SEARCH TEST END ====\n\n");
+    COLOUT(printf("\n\n==== SEARCH TEST END ====\n\n"));
 
     return EOK;
 }
@@ -1647,7 +1683,7 @@ int sort_test(void)
     struct collection_item *level3 = NULL;
     int error = 0;
 
-    printf("\n\n==== SORT TEST ====\n\n");
+    COLOUT(printf("\n\n==== SORT TEST ====\n\n"));
 
     if ((error = col_create_collection(&level1, "level1", 0)) ||
         (error = col_create_collection(&level2a, "level2a", 0)) ||
@@ -1701,8 +1737,8 @@ int sort_test(void)
         return error;
     }
 
-    printf("\nUNSORTED COLLECTION\n\n");
-    col_debug_collection(level1, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\nUNSORTED COLLECTION\n\n"));
+    COLOUT(col_debug_collection(level1, COL_TRAVERSE_DEFAULT));
 
     error = col_sort_collection(level1, COL_CMPIN_PROP_EQU, COL_SORT_SUB | COL_SORT_MYSUB);
     if (error) {
@@ -1714,8 +1750,8 @@ int sort_test(void)
         return error;
     }
 
-    printf("\nSORTED BUT SKIPPING REFERENCES\n\n");
-    col_debug_collection(level1, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\nSORTED BUT SKIPPING REFERENCES\n\n"));
+    COLOUT(col_debug_collection(level1, COL_TRAVERSE_DEFAULT));
 
     error = col_sort_collection(level1, COL_CMPIN_PROP_EQU, COL_SORT_SUB);
     if (error) {
@@ -1727,8 +1763,8 @@ int sort_test(void)
         return error;
     }
 
-    printf("\nSORTED BUT NOT SKIPPING REFERENCES\n\n");
-    col_debug_collection(level1, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\nSORTED BUT NOT SKIPPING REFERENCES\n\n"));
+    COLOUT(col_debug_collection(level1, COL_TRAVERSE_DEFAULT));
 
     error = col_sort_collection(level1, COL_CMPIN_DATA_LEN, COL_SORT_SUB | COL_SORT_DESC);
     if (error) {
@@ -1740,8 +1776,8 @@ int sort_test(void)
         return error;
     }
 
-    printf("\nSORTED DESC NOT SKIPPING BY LENGTH OF DATA\n\n");
-    col_debug_collection(level1, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\nSORTED DESC NOT SKIPPING BY LENGTH OF DATA\n\n"));
+    COLOUT(col_debug_collection(level1, COL_TRAVERSE_DEFAULT));
 
     error = col_sort_collection(level1, COL_CMPIN_PROP_LEN, COL_SORT_SUB | COL_SORT_DESC);
     if (error) {
@@ -1753,8 +1789,8 @@ int sort_test(void)
         return error;
     }
 
-    printf("\nSORTED DESC NOT SKIPPING BY LENGTH OF PROPERTY\n\n");
-    col_debug_collection(level1, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\nSORTED DESC NOT SKIPPING BY LENGTH OF PROPERTY\n\n"));
+    COLOUT(col_debug_collection(level1, COL_TRAVERSE_DEFAULT));
 
     error = col_sort_collection(level1, COL_CMPIN_DATA, COL_SORT_SUB | COL_SORT_DESC);
     if (error) {
@@ -1766,15 +1802,15 @@ int sort_test(void)
         return error;
     }
 
-    printf("\nSORTED DESC NOT SKIPPING BY DATA\n\n");
-    col_debug_collection(level1, COL_TRAVERSE_DEFAULT);
+    COLOUT(printf("\nSORTED DESC NOT SKIPPING BY DATA\n\n"));
+    COLOUT(col_debug_collection(level1, COL_TRAVERSE_DEFAULT));
 
     col_destroy_collection(level1);
     col_destroy_collection(level2a);
     col_destroy_collection(level2b);
     col_destroy_collection(level3);
 
-    printf("\n\n==== SORT TEST END ====\n\n");
+    COLOUT(printf("\n\n==== SORT TEST END ====\n\n"));
 
     return EOK;
 }
@@ -1784,20 +1820,32 @@ int sort_test(void)
 int main(int argc, char *argv[])
 {
     int error = 0;
+    test_fn tests[] = { ref_collection_test,
+                        single_collection_test,
+                        add_collection_test,
+                        mixed_collection_test,
+                        iterator_test,
+                        insert_extract_test,
+                        delete_test,
+                        search_test,
+                        sort_test,
+                        NULL };
+    test_fn t;
+    int i = 0;
+
+    if ((argc > 1) && (strcmp(argv[1], "-v") == 0)) verbose = 1;
 
     printf("Start\n");
-    if ((error = ref_collection_test()) ||
-        (error = single_collection_test()) ||
-        (error = add_collection_test()) ||
-        (error = mixed_collection_test()) ||
-        (error = iterator_test()) ||
-        (error = insert_extract_test()) ||
-        (error = delete_test()) ||
-        (error = search_test()) ||
-        (error = sort_test())) {
-        printf("Failed!\n");
-    }
-    else printf("Success!\n");
-    /* Add other tests here ... */
-    return error;
+
+    while ((t = tests[i++])) {
+        error = t();
+        if (error) {
+            printf("Failed!\n");
+            return error;
+        }
+    }
+
+    printf("Success!\n");
+    return 0;
+
 }