For tests, rename ASSERT_ALLOC() to TEST_CALLOC_OR_FAIL()

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
diff --git a/tests/suites/test_suite_constant_time.function b/tests/suites/test_suite_constant_time.function
index 03c5a67..d67e46b 100644
--- a/tests/suites/test_suite_constant_time.function
+++ b/tests/suites/test_suite_constant_time.function
@@ -23,8 +23,8 @@
     size_t src_len = offset_max + len;
     size_t secret;
 
-    ASSERT_ALLOC(dst, len);
-    ASSERT_ALLOC(src, src_len);
+    TEST_CALLOC_OR_FAIL(dst, len);
+    TEST_CALLOC_OR_FAIL(src, src_len);
 
     /* Fill src in a way that we can detect if we copied the right bytes */
     mbedtls_test_rnd_std_rand(NULL, src, src_len);