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Diffstat (limited to 'lib/ccan/likely/test/run-debug.c')
-rw-r--r--lib/ccan/likely/test/run-debug.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/lib/ccan/likely/test/run-debug.c b/lib/ccan/likely/test/run-debug.c
new file mode 100644
index 0000000000..df78619271
--- /dev/null
+++ b/lib/ccan/likely/test/run-debug.c
@@ -0,0 +1,87 @@
+#define CCAN_LIKELY_DEBUG 1
+#include <ccan/likely/likely.c>
+#include <ccan/likely/likely.h>
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+
+static bool one_seems_likely(unsigned int val)
+{
+ if (likely(val == 1))
+ return true;
+ return false;
+}
+
+static bool one_seems_unlikely(unsigned int val)
+{
+ if (unlikely(val == 1))
+ return true;
+ return false;
+}
+
+static bool likely_one_unlikely_two(unsigned int val1, unsigned int val2)
+{
+ /* Same line, check we don't get confused! */
+ if (likely(val1 == 1) && unlikely(val2 == 2))
+ return true;
+ return false;
+}
+
+int main(int argc, char *argv[])
+{
+ const char *bad;
+
+ plan_tests(13);
+
+ /* Correct guesses. */
+ one_seems_likely(1);
+ ok1(likely_stats(0, 90) == NULL);
+ one_seems_unlikely(2);
+ ok1(likely_stats(0, 90) == NULL);
+
+ /* Incorrect guesses. */
+ one_seems_likely(0);
+ one_seems_likely(2);
+ /* Hasn't been hit 4 times, so this fails */
+ ok1(!likely_stats(4, 90));
+ bad = likely_stats(3, 90);
+ ok(strends(bad, "run-debug.c:9:likely(val == 1) correct 33% (1/3)"),
+ "likely_stats returned %s", bad);
+
+ /* Nothing else above 90% */
+ ok1(!likely_stats(0, 90));
+
+ /* This should get everything. */
+ bad = likely_stats(0, 100);
+ ok(strends(bad, "run-debug.c:16:unlikely(val == 1) correct 100% (1/1)"),
+ "likely_stats returned %s", bad);
+
+ /* Nothing left (table is actually cleared) */
+ ok1(!likely_stats(0, 100));
+
+ /* Make sure unlikely works */
+ one_seems_unlikely(0);
+ one_seems_unlikely(2);
+ one_seems_unlikely(1);
+
+ bad = likely_stats(0, 90);
+ ok(strends(bad, "run-debug.c:16:unlikely(val == 1) correct 66% (2/3)"),
+ "likely_stats returned %s", bad);
+ ok1(!likely_stats(0, 100));
+
+ likely_one_unlikely_two(1, 1);
+ likely_one_unlikely_two(1, 1);
+ likely_one_unlikely_two(1, 1);
+ ok1(!likely_stats(0, 90));
+ likely_one_unlikely_two(1, 2);
+
+ bad = likely_stats(0, 90);
+ ok(strends(bad, "run-debug.c:24:unlikely(val2 == 2) correct 75% (3/4)"),
+ "likely_stats returned %s", bad);
+ bad = likely_stats(0, 100);
+ ok(strends(bad, "run-debug.c:24:likely(val1 == 1) correct 100% (4/4)"),
+ "likely_stats returned %s", bad);
+
+ ok1(!likely_stats(0, 100));
+
+ exit(exit_status());
+}