1 files changed, 99 insertions, 0 deletions
diff --git a/lib/generic/test_array.c b/lib/generic/test_array.c
new file mode 100644
index 0000000..3e95b49
--- /dev/null
+++ b/lib/generic/test_array.c
@@ -0,0 +1,99 @@
+/*  Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "tests/unit/test.h"
+#include "lib/generic/array.h"
+
+knot_mm_t global_mm;
+
+static void test_array(void **state)
+{
+	int ret = 0;
+	array_t(int) arr;
+	array_init(arr);
+
+	/* Basic access */
+	assert_int_equal(arr.len, 0);
+	assert_int_equal(array_push(arr, 5), 0);
+	assert_int_equal(arr.at[0], 5);
+	assert_int_equal(array_tail(arr), 5);
+	array_clear(arr);
+
+	/* Reserve capacity and fill. */
+	assert_true(array_reserve(arr, 5) >= 0);
+	for (unsigned i = 0; i < 100; ++i) {
+		ret = array_push(arr, i);
+		assert_true(ret >= 0);
+	}
+
+	/* Make sure reservation holds. */
+	assert_true(array_reserve(arr, 5) >= 0);
+
+	/* Delete elements. */
+	array_del(arr, 0);
+	while (arr.len > 0) {
+		array_pop(arr);
+	}
+
+	/* Overfill. */
+	for (unsigned i = 0; i < 4096; ++i) {
+		ret = array_push(arr, i);
+		assert_true(ret >= 0);
+	}
+
+	array_clear(arr);
+}
+
+/** Reservation through tracked memory allocator. */
+static int test_reserve(void *baton, void **mem, size_t elm_size, size_t want, size_t *have)
+{
+	if (want > *have) {
+		void *new_mem = mm_alloc(baton, elm_size * want);
+		if (*mem != NULL) {
+			memcpy(new_mem, *mem, (*have) * elm_size);
+			mm_free(baton, *mem);
+		}
+		*mem = new_mem;
+		*have = want;
+	}
+
+	return 0;
+}
+
+/** Reservation through fake memory allocator. */
+static int fake_reserve(void *baton, void **mem, size_t elm_size, size_t want, size_t *have)
+{
+	return -1;
+}
+
+static void test_array_mm(void **state)
+{
+	array_t(int) arr;
+	array_init(arr);
+
+	/* Reserve using fake memory allocator. */
+	assert_false(array_reserve_mm(arr, 5, fake_reserve, NULL) >= 0);
+
+	/* Reserve capacity and fill. */
+	assert_true(array_reserve_mm(arr, 100, test_reserve, &global_mm) >= 0);
+	for (unsigned i = 0; i < 100; ++i) {
+		int ret = array_push(arr, i);
+		assert_true(ret >= 0);
+	}
+
+	array_clear_mm(arr, mm_free, &global_mm);
+
+}
+
+int main(void)
+{
+	test_mm_ctx_init(&global_mm);
+
+	const UnitTest tests[] = {
+		unit_test(test_array),
+		unit_test(test_array_mm)
+	};
+
+	return run_tests(tests);
+}