A tool in jerry-ext: arg transformer for binding (#1740)

It provides some APIs for binding developers, so that
they can validate the type of the js argument and convert/assign them
to the native argument.

Related Issue: #1716

JerryScript-DCO-1.0-Signed-off-by: Martijn The martijn.the@intel.com
JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com

tests/unit-ext/test-common.h

@@ -0,0 +1,36 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef TEST_COMMON_H
+#define TEST_COMMON_H
+
+#include "jerryscript-port.h"
+
+#define TEST_ASSERT(x) \
+  do \
+  { \
+    if (!(x)) \
+    { \
+      jerry_port_log (JERRY_LOG_LEVEL_ERROR, \
+                      "TEST: Assertion '%s' failed at %s(%s):%lu.\n", \
+                      #x, \
+                      __FILE__, \
+                      __func__, \
+                      (unsigned long) __LINE__); \
+      jerry_port_fatal (ERR_FAILED_INTERNAL_ASSERTION); \
+    } \
+  } while (0)
+
+#endif /* TEST_COMMON_H */