1 files changed, 94 insertions, 0 deletions
diff --git a/tests/util/assert.c b/tests/util/assert.c
new file mode 100644
index 000000000..26c429787
--- /dev/null
+++ b/tests/util/assert.c
@@ -0,0 +1,94 @@
+#ifdef GIT_ASSERT_HARD
+# undef GIT_ASSERT_HARD
+#endif
+
+#define GIT_ASSERT_HARD 0
+
+#include "clar_libgit2.h"
+
+static const char *hello_world = "hello, world";
+static const char *fail = "FAIL";
+
+static int dummy_fn(const char *myarg)
+{
+	GIT_ASSERT_ARG(myarg);
+	GIT_ASSERT_ARG(myarg != hello_world);
+	return 0;
+}
+
+static const char *fn_returns_string(const char *myarg)
+{
+	GIT_ASSERT_ARG_WITH_RETVAL(myarg, fail);
+	GIT_ASSERT_ARG_WITH_RETVAL(myarg != hello_world, fail);
+
+	return myarg;
+}
+
+static int bad_math(void)
+{
+	GIT_ASSERT(1 + 1 == 3);
+	return 42;
+}
+
+static const char *bad_returns_string(void)
+{
+	GIT_ASSERT_WITH_RETVAL(1 + 1 == 3, NULL);
+	return hello_world;
+}
+
+void test_assert__argument(void)
+{
+	cl_git_fail(dummy_fn(NULL));
+	cl_assert(git_error_last());
+	cl_assert_equal_i(GIT_ERROR_INVALID, git_error_last()->klass);
+	cl_assert_equal_s("invalid argument: 'myarg'", git_error_last()->message);
+
+	cl_git_fail(dummy_fn(hello_world));
+	cl_assert(git_error_last());
+	cl_assert_equal_i(GIT_ERROR_INVALID, git_error_last()->klass);
+	cl_assert_equal_s("invalid argument: 'myarg != hello_world'", git_error_last()->message);
+
+	cl_git_pass(dummy_fn("foo"));
+}
+
+void test_assert__argument_with_non_int_return_type(void)
+{
+	const char *foo = "foo";
+
+	cl_assert_equal_p(fail, fn_returns_string(NULL));
+	cl_assert_equal_i(GIT_ERROR_INVALID, git_error_last()->klass);
+	cl_assert_equal_s("invalid argument: 'myarg'", git_error_last()->message);
+
+	cl_assert_equal_p(fail, fn_returns_string(hello_world));
+	cl_assert_equal_i(GIT_ERROR_INVALID, git_error_last()->klass);
+	cl_assert_equal_s("invalid argument: 'myarg != hello_world'", git_error_last()->message);
+
+	cl_assert_equal_p(foo, fn_returns_string(foo));
+}
+
+void test_assert__argument_with_void_return_type(void)
+{
+	const char *foo = "foo";
+
+	git_error_clear();
+	fn_returns_string(hello_world);
+	cl_assert_equal_i(GIT_ERROR_INVALID, git_error_last()->klass);
+	cl_assert_equal_s("invalid argument: 'myarg != hello_world'", git_error_last()->message);
+
+	git_error_clear();
+	cl_assert_equal_p(foo, fn_returns_string(foo));
+	cl_assert_equal_p(NULL, git_error_last());
+}
+
+void test_assert__internal(void)
+{
+	cl_git_fail(bad_math());
+	cl_assert(git_error_last());
+	cl_assert_equal_i(GIT_ERROR_INTERNAL, git_error_last()->klass);
+	cl_assert_equal_s("unrecoverable internal error: '1 + 1 == 3'", git_error_last()->message);
+
+	cl_assert_equal_p(NULL, bad_returns_string());
+	cl_assert(git_error_last());
+	cl_assert_equal_i(GIT_ERROR_INTERNAL, git_error_last()->klass);
+	cl_assert_equal_s("unrecoverable internal error: '1 + 1 == 3'", git_error_last()->message);
+}