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}
73 lines
2.6 KiB
JavaScript
73 lines
2.6 KiB
JavaScript
// Copyright 2008 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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// Make sure that the backtrace command can be processed when the receiver is
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// undefined.
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let listenerCalled = false;
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let exceptionThrown = false;
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function listener(event, exec_state, event_data, data) {
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try {
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if (event == Debug.DebugEvent.Exception) {
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// The expected backtrace is
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// 1: g
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// 0: [anonymous]
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assertEquals(2, exec_state.frameCount());
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assertEquals("g", exec_state.frame(0).func().name());
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assertEquals("", exec_state.frame(1).func().name());
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listenerCalled = true;
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}
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} catch (e) {
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print(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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// Call method on undefined.
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function g() {
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(void 0).f();
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};
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// Break on the exception to do a backtrace with undefined as receiver.
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Debug.setBreakOnException(true);
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try {
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g();
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} catch(e) {
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// Ignore the exception "Cannot call method 'x' of undefined"
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}
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assertFalse(exceptionThrown, "exception in listener");
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// Make sure that the debug event listener vas invoked.
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assertTrue(listenerCalled, "listener not called");
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