Add non-standard behaviour support for Proxies (#4562)

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

tests/unit-core/CMakeLists.txt

@@ -74,6 +74,7 @@ set(SOURCE_UNIT_TEST_MAIN_MODULES
   test-regression-3588.c
   test-resource-name.c
   test-snapshot.c
+  test-special-proxy.c
   test-string-to-number.c
   test-stringbuilder.c
   test-strings.c

tests/unit-core/test-realm.c

@@ -13,8 +13,7 @@
  * limitations under the License.
  */
 
-#include "ecma-globals.h"
-#include "ecma-helpers.h"
+#include "jerryscript.h"
 
 #include "test-common.h"
 

tests/unit-core/test-special-proxy.c

@@ -0,0 +1,107 @@
+/* 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.
+ */
+
+#include "jerryscript.h"
+
+#include "test-common.h"
+
+static jerry_value_t
+create_special_proxy_handler (const jerry_value_t function_obj, /**< function object */
+                              const jerry_value_t this_val, /**< this value */
+                              const jerry_value_t args_p[], /**< argument list */
+                              const jerry_length_t args_count) /**< argument count */
+{
+  JERRY_UNUSED (function_obj);
+  JERRY_UNUSED (this_val);
+
+  if (args_count < 2)
+  {
+    return jerry_create_undefined ();
+  }
+
+  const uint32_t options = (JERRY_PROXY_SKIP_GET_CHECKS
+                            | JERRY_PROXY_SKIP_GET_OWN_PROPERTY_CHECKS);
+
+  return jerry_create_special_proxy (args_p[0], args_p[1], options);
+} /* create_special_proxy_handler */
+
+static void
+run_eval (const char *source_p)
+{
+  jerry_value_t result = jerry_eval ((const jerry_char_t *) source_p, strlen (source_p), 0);
+
+  TEST_ASSERT (!jerry_value_is_error (result));
+  jerry_release_value (result);
+} /* run_eval */
+
+/**
+ * Unit test's main function.
+ */
+int
+main (void)
+{
+  TEST_INIT ();
+
+  if (!jerry_is_feature_enabled (JERRY_FEATURE_PROXY))
+  {
+    printf ("Skipping test, Proxy not enabled\n");
+    return 0;
+  }
+
+  jerry_init (JERRY_INIT_EMPTY);
+
+  jerry_value_t global = jerry_get_global_object ();
+
+  jerry_value_t function = jerry_create_external_function (create_special_proxy_handler);
+  jerry_value_t name = jerry_create_string ((const jerry_char_t *) "create_special_proxy");
+  jerry_value_t result = jerry_set_property (global, name, function);
+  TEST_ASSERT (!jerry_value_is_error (result));
+
+  jerry_release_value (result);
+  jerry_release_value (name);
+  jerry_release_value (function);
+
+  jerry_release_value (global);
+
+  run_eval ("function assert (v) {\n"
+            "  if (v !== true)\n"
+            "     throw 'Assertion failed!'\n"
+            "}");
+
+  /* This test fails unless JERRY_PROXY_SKIP_GET_CHECKS is set. */
+  run_eval ("var o = {}\n"
+            "Object.defineProperty(o, 'prop', { value:4 })\n"
+            "var proxy = create_special_proxy(o, {\n"
+            "  get(target, key) { return 5 }\n"
+            "})\n"
+            "assert(proxy.prop === 5)");
+
+  /* This test fails unless JERRY_PROXY_SKIP_GET_OWN_PROPERTY_CHECKS is set. */
+  run_eval ("var o = {}\n"
+            "Object.defineProperty(o, 'prop', { value:4, enumerable:true })\n"
+            "var proxy = create_special_proxy(o, {\n"
+            "  getOwnPropertyDescriptor(target, key) {\n"
+            "    return { value:5, configurable:true, writable:true }\n"
+            "  }\n"
+            "})\n"
+            "var desc = Object.getOwnPropertyDescriptor(proxy, 'prop')\n"
+            "assert(desc.value === 5)\n"
+            "assert(desc.configurable === true)\n"
+            "assert(desc.enumerable === false)\n"
+            "assert(desc.writable === true)\n");
+
+  jerry_cleanup ();
+  return 0;
+} /* main */