bitmap: Add first cut at a bitmap module

[ccan] / ccan / bitmap / test / run.c

diff --git a/ccan/bitmap/test/run.c b/ccan/bitmap/test/run.c
new file mode 100644 (file)
index 0000000..76a8161
--- /dev/null
+++ b/ccan/bitmap/test/run.c
@@ -0,0 +1,99 @@
+#include <ccan/bitmap/bitmap.h>
+#include <ccan/tap/tap.h>
+#include <ccan/array_size/array_size.h>
+
+int bitmap_sizes[] = {
+       1, 2, 3, 4, 5, 6, 7, 8,
+       16, 17, 24, 32, 33,
+       64, 65, 127, 128, 129,
+       1023, 1024, 1025,
+};
+#define NSIZES ARRAY_SIZE(bitmap_sizes)
+#define NTESTS 9
+
+static void test_sizes(int nbits)
+{
+       void *bitmap = bitmap_alloc(nbits);
+       int i, j;
+       bool wrong;
+
+       ok1(bitmap != NULL);
+
+       bitmap_zero(bitmap, nbits);
+       wrong = false;
+       for (i = 0; i < nbits; i++) {
+               wrong = wrong || bitmap_test_bit(bitmap, i);
+       }
+       ok1(!wrong);
+
+       bitmap_fill(bitmap, nbits);
+       wrong = false;
+       for (i = 0; i < nbits; i++) {
+               wrong = wrong || !bitmap_test_bit(bitmap, i);
+       }
+       ok1(!wrong);
+
+       wrong = false;
+       for (i = 0; i < nbits; i++) {
+               bitmap_zero(bitmap, nbits);
+               bitmap_set_bit(bitmap, i);
+               for (j = 0; j < nbits; j++) {
+                       bool val = (i == j);
+
+                       wrong = wrong || (bitmap_test_bit(bitmap, j) != val);
+               }
+       }
+       ok1(!wrong);
+
+       wrong = false;
+       for (i = 0; i < nbits; i++) {
+               bitmap_fill(bitmap, nbits);
+               bitmap_clear_bit(bitmap, i);
+               for (j = 0; j < nbits; j++) {
+                       bool val = !(i == j);
+
+                       wrong = wrong || (bitmap_test_bit(bitmap, j) != val);
+               }
+       }
+       ok1(!wrong);
+
+       bitmap_zero(bitmap, nbits);
+       ok1(bitmap_empty(bitmap, nbits));
+
+       wrong = false;
+       for (i = 0; i < nbits; i++) {
+               bitmap_zero(bitmap, nbits);
+               bitmap_set_bit(bitmap, i);
+               wrong = wrong || bitmap_empty(bitmap, nbits);
+       }
+       ok1(!wrong);
+
+       bitmap_fill(bitmap, nbits);
+       ok1(bitmap_full(bitmap, nbits));
+
+       wrong = false;
+       for (i = 0; i < nbits; i++) {
+               bitmap_fill(bitmap, nbits);
+               bitmap_clear_bit(bitmap, i);
+               wrong = wrong || bitmap_full(bitmap, nbits);
+       }
+       ok1(!wrong);
+               
+       free(bitmap);
+}
+
+int main(void)
+{
+       int i;
+
+       /* This is how many tests you plan to run */
+       plan_tests(NSIZES * NTESTS);
+
+       for (i = 0; i < NSIZES; i++) {
+               diag("Testing %d-bit bitmap", bitmap_sizes[i]);
+               test_sizes(bitmap_sizes[i]);
+       }
+
+       /* This exits depending on whether all tests passed */
+       return exit_status();
+}