bitmap: Extend allocation functions

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

diff --git a/ccan/bitmap/test/run-alloc.c b/ccan/bitmap/test/run-alloc.c
new file mode 100644 (file)
index 0000000..fcdaf4d
--- /dev/null
+++ b/ccan/bitmap/test/run-alloc.c
@@ -0,0 +1,101 @@
+#include <ccan/bitmap/bitmap.h>
+#include <ccan/tap/tap.h>
+#include <ccan/array_size/array_size.h>
+#include <ccan/foreach/foreach.h>
+
+#include <ccan/bitmap/bitmap.c>
+
+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_BASE 4
+#define NTESTS_REALLOC 10
+
+static void test_basic_alloc(int nbits)
+{
+       bitmap *bitmap;
+
+       bitmap = bitmap_alloc0(nbits);
+       ok1(bitmap != NULL);
+       ok1(bitmap_empty(bitmap, nbits));
+
+       free(bitmap);
+
+       bitmap = bitmap_alloc1(nbits);
+       ok1(bitmap != NULL);
+       ok1(bitmap_full(bitmap, nbits));
+
+       free(bitmap);
+}
+
+static void test_realloc(int obits, int nbits)
+{
+       bitmap *bitmap;
+       int i;
+       bool wrong;
+
+       bitmap = bitmap_alloc0(obits);
+       ok1(bitmap != NULL);
+       ok1(bitmap_empty(bitmap, obits));
+
+       bitmap = bitmap_realloc1(bitmap, obits, nbits);
+       ok1(bitmap != NULL);
+       if (obits < nbits)
+               ok1(bitmap_empty(bitmap, obits));
+       else
+               ok1(bitmap_empty(bitmap, nbits));
+
+       wrong = false;
+       for (i = obits; i < nbits; i++)
+               wrong = wrong || !bitmap_test_bit(bitmap, i);
+       ok1(!wrong);
+
+       free(bitmap);
+
+       bitmap = bitmap_alloc1(obits);
+       ok1(bitmap != NULL);
+       ok1(bitmap_full(bitmap, obits));
+
+       bitmap = bitmap_realloc0(bitmap, obits, nbits);
+       ok1(bitmap != NULL);
+       if (obits < nbits)
+               ok1(bitmap_full(bitmap, obits));
+       else
+               ok1(bitmap_full(bitmap, nbits));
+
+       wrong = false;
+       for (i = obits; i < nbits; i++)
+               wrong = wrong || bitmap_test_bit(bitmap, i);
+       ok1(!wrong);
+
+       free(bitmap);
+}
+
+int main(void)
+{
+       int i, j;
+
+       /* This is how many tests you plan to run */
+       plan_tests(NSIZES * NTESTS_BASE + NSIZES * NSIZES * NTESTS_REALLOC);
+
+       for (i = 0; i < NSIZES; i++) {
+               diag("Testing %d-bit bitmap", bitmap_sizes[i]);
+               test_basic_alloc(bitmap_sizes[i]);
+       }
+
+       for (i = 0; i < NSIZES; i++) {
+               for (j = 0; j < NSIZES; j++) {
+                       diag("Testing %d-bit => %d-bit bitmap",
+                            bitmap_sizes[i], bitmap_sizes[j]);
+
+                       test_realloc(bitmap_sizes[i], bitmap_sizes[j]);
+               }
+       }
+
+       /* This exits depending on whether all tests passed */
+       return exit_status();
+}