6e39c9e1a7
It was shipped in Chrome 62. Bug: v8:5070 Cq-Include-Trybots: master.tryserver.v8:v8_linux_noi18n_rel_ng Change-Id: I77119540411d1fe15691d40012cb96f4e2e45048 Reviewed-on: https://chromium-review.googlesource.com/776154 Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#49434}
91 lines
3.8 KiB
C++
91 lines
3.8 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "src/v8.h"
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#include "test/cctest/cctest.h"
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namespace v8 {
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namespace internal {
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namespace test_usecounters {
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int* global_use_counts = nullptr;
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void MockUseCounterCallback(v8::Isolate* isolate,
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v8::Isolate::UseCounterFeature feature) {
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++global_use_counts[feature];
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}
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TEST(AssigmentExpressionLHSIsCall) {
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v8::Isolate* isolate = CcTest::isolate();
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v8::HandleScope scope(isolate);
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LocalContext env;
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int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
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global_use_counts = use_counts;
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CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
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// AssignmentExpressions whose LHS is not a call do not increment counters
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CompileRun("function f(){ a = 0; a()[b] = 0; }");
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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CompileRun("function f(){ ++a; ++a()[b]; }");
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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CompileRun("function f(){ 'use strict'; a = 0; a()[b] = 0; }");
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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CompileRun("function f(){ 'use strict'; ++a; ++a()[b]; }");
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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// AssignmentExpressions whose LHS is a call increment appropriate counters
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CompileRun("function f(){ a() = 0; }");
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CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
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CompileRun("function f(){ 'use strict'; a() = 0; }");
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
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// UpdateExpressions whose LHS is a call increment appropriate counters
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CompileRun("function f(){ ++a(); }");
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CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
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CompileRun("function f(){ 'use strict'; ++a(); }");
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CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
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CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
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use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
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}
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TEST(LabeledExpressionStatement) {
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v8::Isolate* isolate = CcTest::isolate();
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v8::HandleScope scope(isolate);
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LocalContext env;
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int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
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global_use_counts = use_counts;
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CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
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CompileRun("typeof a");
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CHECK_EQ(0, use_counts[v8::Isolate::kLabeledExpressionStatement]);
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CompileRun("foo: null");
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CHECK_EQ(1, use_counts[v8::Isolate::kLabeledExpressionStatement]);
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CompileRun("foo: bar: baz: undefined");
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CHECK_EQ(2, use_counts[v8::Isolate::kLabeledExpressionStatement]);
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CompileRun(
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"foo: if (false);"
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"bar: { }"
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"baz: switch (false) { }"
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"bat: do { } while (false);");
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CHECK_EQ(2, use_counts[v8::Isolate::kLabeledExpressionStatement]);
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}
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} // namespace test_usecounters
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} // namespace internal
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} // namespace v8
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