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| 1 // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "test/cctest/compiler/function-tester.h" |
| 6 |
| 7 using namespace v8::internal; |
| 8 using namespace v8::internal::compiler; |
| 9 |
| 10 TEST(ArgumentsMapped) { |
| 11 FunctionTester T("(function(a) { return arguments; })"); |
| 12 |
| 13 Handle<Object> arguments; |
| 14 T.Call(T.Val(19), T.Val(23), T.Val(42), T.Val(65)).ToHandle(&arguments); |
| 15 CHECK(arguments->IsJSObject() && !arguments->IsJSArray()); |
| 16 CHECK(JSObject::cast(*arguments)->HasSloppyArgumentsElements()); |
| 17 Handle<String> l = T.isolate->factory()->length_string(); |
| 18 Handle<Object> length = JSObject::GetProperty(arguments, l).ToHandleChecked(); |
| 19 CHECK_EQ(4, length->Number()); |
| 20 } |
| 21 |
| 22 |
| 23 TEST(ArgumentsUnmapped) { |
| 24 FunctionTester T("(function(a) { 'use strict'; return arguments; })"); |
| 25 |
| 26 Handle<Object> arguments; |
| 27 T.Call(T.Val(19), T.Val(23), T.Val(42), T.Val(65)).ToHandle(&arguments); |
| 28 CHECK(arguments->IsJSObject() && !arguments->IsJSArray()); |
| 29 CHECK(!JSObject::cast(*arguments)->HasSloppyArgumentsElements()); |
| 30 Handle<String> l = T.isolate->factory()->length_string(); |
| 31 Handle<Object> length = JSObject::GetProperty(arguments, l).ToHandleChecked(); |
| 32 CHECK_EQ(4, length->Number()); |
| 33 } |
| 34 |
| 35 |
| 36 TEST(ArgumentsRest) { |
| 37 FLAG_harmony_rest_parameters = true; |
| 38 FunctionTester T("(function(a, ...args) { return args; })"); |
| 39 |
| 40 Handle<Object> arguments; |
| 41 T.Call(T.Val(19), T.Val(23), T.Val(42), T.Val(65)).ToHandle(&arguments); |
| 42 CHECK(arguments->IsJSObject() && arguments->IsJSArray()); |
| 43 CHECK(!JSObject::cast(*arguments)->HasSloppyArgumentsElements()); |
| 44 Handle<String> l = T.isolate->factory()->length_string(); |
| 45 Handle<Object> length = JSObject::GetProperty(arguments, l).ToHandleChecked(); |
| 46 CHECK_EQ(3, length->Number()); |
| 47 } |
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