v8/test/inspector/runtime/evaluate-repl-mode-side-effecting.js
Peter Marshall 73f4ac62ed [inspector] Add a test for const declaration and side effects
Add a test that does the same thing the devtools-frontend does when
evaluating console inputs.

1) Declare a const variable with throwOnSideEffect=true. This should
throw.
2) Declare the same const variable with throwOnSideEffect=false.
This should successfully declare the variable.

Previously it could be the case that even though we threw in 1), the
variable would fail to be initialized in 2) with a re-declaration
error.

Bug: chromium:1043151
Change-Id: I1a6126b518f7bb3788c39b9f8e3adb8850aa962a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2016587
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65991}
2020-01-27 10:10:56 +00:00

43 lines
1.3 KiB
JavaScript

// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
let {Protocol} = InspectorTest.start(
'Tests that Runtime.evaluate with REPL mode correctly detects side-effects.');
Protocol.Runtime.enable();
(async function() {
InspectorTest.log('Test "let" declaration is side-effecting');
await evaluateRepl('let x = 21;');
InspectorTest.log('Test "const" declaration is side-effecting');
await evaluateRepl('const y = 42;');
InspectorTest.log('Test "const" with side-effects works afterwards');
await evaluateReplWithSideEffects('const y = 42;');
InspectorTest.log('Test side-effect free expressions can be eagerly evaluated');
await evaluateRepl('1 + 2');
await evaluateRepl('"hello " + "REPL"');
await evaluateRepl('(async function foo() { return 42; })();');
InspectorTest.completeTest();
})();
async function evaluateRepl(expression) {
InspectorTest.logMessage(await Protocol.Runtime.evaluate({
expression: expression,
replMode: true,
throwOnSideEffect: true
}));
}
async function evaluateReplWithSideEffects(expression) {
InspectorTest.logMessage(await Protocol.Runtime.evaluate({
expression: expression,
replMode: true,
throwOnSideEffect: false
}));
}