b8ae2249a4
Some debugging tests relied on the following anti-pattern:
let exception = false;
try {
/* ... some code that may throw on test failure ... */
} catch (e) {
exception = e;
}
assertFalse(exception);
This may be problematic if a falseish value is thrown.
Change-Id: I02eace4cc656fc9581928a90ac53cda4dc72b30c
Reviewed-on: https://chromium-review.googlesource.com/972822
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52105}
123 lines
4.5 KiB
JavaScript
123 lines
4.5 KiB
JavaScript
// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Debug = debug.Debug
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var exceptionThrown = false; // Exception in debug event listener.
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var after_compile_count = 0;
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var compile_error_count = 0;
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var current_source = ''; // Current source being compiled.
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var source_count = 0; // Total number of scources compiled.
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var mute_listener = false;
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function compileSource(source) {
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current_source = source;
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eval(current_source);
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source_count++;
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}
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function safeEval(code) {
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try {
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mute_listener = true;
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return eval('(' + code + ')');
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} catch (e) {
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assertEquals(void 0, e);
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return undefined;
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} finally {
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mute_listener = false;
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}
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}
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function listener(event, exec_state, event_data, data) {
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if (mute_listener) return;
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try {
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if (event == Debug.DebugEvent.BeforeCompile ||
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event == Debug.DebugEvent.AfterCompile ||
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event == Debug.DebugEvent.CompileError) {
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// Count the events.
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if (event == Debug.DebugEvent.AfterCompile) {
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after_compile_count++;
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} else if (event == Debug.DebugEvent.CompileError) {
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compile_error_count++;
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}
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// If the compiled source contains 'eval' there will be additional compile
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// events for the source inside eval.
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if (current_source.indexOf('eval') == 0) {
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// For source with 'eval' there will be compile events with substrings
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// as well as with with the exact source.
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assertTrue(current_source.indexOf(event_data.script().source()) >= 0);
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} else {
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// For source without 'eval' there will be a compile events with the
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// exact source.
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assertEquals(current_source, event_data.script().source());
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}
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// Check that we pick script name from //# sourceURL, iff present
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if (event == Debug.DebugEvent.AfterCompile) {
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assertEquals(current_source.indexOf('sourceURL') >= 0 ?
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'myscript.js' : undefined,
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event_data.script().name());
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}
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}
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} catch (e) {
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exceptionThrown = true;
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}
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};
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// Add the debug event listener.
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Debug.setListener(listener);
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// Compile different sources.
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compileSource('a=1');
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compileSource('(function(){})');
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compileSource('eval("a=2")');
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source_count++; // Using eval causes additional compilation event.
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compileSource('eval("eval(\'(function(){return a;})\')")');
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source_count += 2; // Using eval causes additional compilation event.
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compileSource('JSON.parse(\'{"a":1,"b":2}\')');
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// Using JSON.parse does not causes additional compilation events.
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compileSource('x=1; //# sourceURL=myscript.js');
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try {
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compileSource('}');
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} catch(e) {
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}
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// Make sure that the debug event listener was invoked.
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assertFalse(exceptionThrown, "exception in listener")
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// Number of before and after + error events should be the same.
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assertEquals(compile_error_count, 1);
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// Check the actual number of events (no compilation through the API as all
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// source compiled through eval).
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assertEquals(source_count, after_compile_count);
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Debug.setListener(null);
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