1 files changed, 68 insertions, 0 deletions
diff --git a/tests/util/alloc.c b/tests/util/alloc.c
new file mode 100644
index 000000000..492394a52
--- /dev/null
+++ b/tests/util/alloc.c
@@ -0,0 +1,68 @@
+#include "clar_libgit2.h"
+#include "clar_libgit2_alloc.h"
+#include "alloc.h"
+
+void test_alloc__cleanup(void)
+{
+	cl_alloc_reset();
+}
+
+void test_alloc__oom(void)
+{
+	void *ptr = NULL;
+
+	cl_alloc_limit(0);
+
+	cl_assert(git__malloc(1) == NULL);
+	cl_assert(git__calloc(1, 1) == NULL);
+	cl_assert(git__realloc(ptr, 1) == NULL);
+	cl_assert(git__strdup("test") == NULL);
+	cl_assert(git__strndup("test", 4) == NULL);
+}
+
+void test_alloc__single_byte_is_exhausted(void)
+{
+	void *ptr;
+
+	cl_alloc_limit(1);
+
+	cl_assert(ptr = git__malloc(1));
+	cl_assert(git__malloc(1) == NULL);
+	git__free(ptr);
+}
+
+void test_alloc__free_replenishes_byte(void)
+{
+	void *ptr;
+
+	cl_alloc_limit(1);
+
+	cl_assert(ptr = git__malloc(1));
+	cl_assert(git__malloc(1) == NULL);
+	git__free(ptr);
+	cl_assert(ptr = git__malloc(1));
+	git__free(ptr);
+}
+
+void test_alloc__realloc(void)
+{
+	char *ptr = NULL;
+
+	cl_alloc_limit(3);
+
+	cl_assert(ptr = git__realloc(ptr, 1));
+	*ptr = 'x';
+
+	cl_assert(ptr = git__realloc(ptr, 1));
+	cl_assert_equal_i(*ptr, 'x');
+
+	cl_assert(ptr = git__realloc(ptr, 2));
+	cl_assert_equal_i(*ptr, 'x');
+
+	cl_assert(git__realloc(ptr, 2) == NULL);
+
+	cl_assert(ptr = git__realloc(ptr, 1));
+	cl_assert_equal_i(*ptr, 'x');
+
+	git__free(ptr);
+}