diff -r d345541018fa -r f094a53c1178 test/test_allocator.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/test_allocator.c	Sun Feb 07 12:20:07 2021 +0100
@@ -0,0 +1,94 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "cx/allocator.h"
+
+#include <CUnit/Basic.h>
+
+void test_default_allocator_available(void) {
+    CU_ASSERT_PTR_EQUAL(cxDefaultAllocator->malloc, cx_malloc_stdlib)
+    CU_ASSERT_PTR_EQUAL(cxDefaultAllocator->realloc, cx_realloc_stdlib)
+    CU_ASSERT_PTR_EQUAL(cxDefaultAllocator->calloc, cx_calloc_stdlib)
+    CU_ASSERT_PTR_EQUAL(cxDefaultAllocator->free, cx_free_stdlib)
+}
+
+void test_default_malloc(void) {
+    void* test = cxMalloc(cxDefaultAllocator, 16);
+    CU_ASSERT_PTR_NOT_NULL(test);
+    free(test);
+}
+
+void test_default_realloc(void) {
+    void* test = calloc(8, 1);
+    memcpy(test, "Test", 4);
+    test = cxRealloc(cxDefaultAllocator, test, 16);
+    CU_ASSERT_PTR_NOT_NULL(test);
+    CU_ASSERT_STRING_EQUAL("Test", test)
+    free(test);
+}
+
+void test_default_calloc(void) {
+    void* test = cxCalloc(cxDefaultAllocator, 8, 2);
+    CU_ASSERT_PTR_NOT_NULL(test);
+    free(test);
+}
+
+void test_default_free(void) {
+    CU_PASS("Testing standard free is not possible.")
+}
+
+int main() {
+    CU_pSuite suite = NULL;
+
+    if (CUE_SUCCESS != CU_initialize_registry()) {
+        return CU_get_error();
+    }
+
+    suite = CU_add_suite("stdlib allocator", NULL, NULL);
+    if (NULL == suite) {
+        CU_cleanup_registry();
+        return CU_get_error();
+    }
+
+    if (
+            (NULL == CU_add_test(suite, "default allocator available", test_default_allocator_available)) ||
+            (NULL == CU_add_test(suite, "test of malloc()", test_default_malloc)) ||
+            (NULL == CU_add_test(suite, "test of realloc()", test_default_realloc)) ||
+            (NULL == CU_add_test(suite, "test of realloc()", test_default_calloc)) ||
+            (NULL == CU_add_test(suite, "test of free()", test_default_free))
+        ) {
+        CU_cleanup_registry();
+        return CU_get_error();
+    }
+
+    CU_basic_set_mode(CU_BRM_NORMAL);
+    CU_basic_run_tests();
+    CU_cleanup_registry();
+
+    return CU_get_error();
+}