v8/test/mjsunit/mirror-string.js
2009-01-15 12:29:05 +00:00

89 lines
3.4 KiB
JavaScript

// Copyright 2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --expose-debug-as debug
// Test the mirror object for string values
const kMaxProtocolStringLength = 80; // Constant from mirror-delay.js
function testStringMirror(s) {
// Create mirror and JSON representation.
var mirror = debug.MakeMirror(s);
var json = mirror.toJSONProtocol(true);
// Check the mirror hierachy.
assertTrue(mirror instanceof debug.Mirror);
assertTrue(mirror instanceof debug.ValueMirror);
assertTrue(mirror instanceof debug.StringMirror);
// Check the mirror properties.
assertTrue(mirror.isString());
assertEquals('string', mirror.type());
assertTrue(mirror.isPrimitive());
// Test text representation
if (s.length <= kMaxProtocolStringLength) {
assertEquals(s, mirror.toText());
} else {
assertEquals(s.substring(0, kMaxProtocolStringLength),
mirror.toText().substring(0, kMaxProtocolStringLength));
}
// Parse JSON representation and check.
var fromJSON = eval('(' + json + ')');
assertEquals('string', fromJSON.type);
if (s.length <= kMaxProtocolStringLength) {
assertEquals(s, fromJSON.value);
} else {
assertEquals(s.substring(0, kMaxProtocolStringLength),
fromJSON.value.substring(0, kMaxProtocolStringLength));
assertEquals(fromJSON.fromIndex, 0);
assertEquals(fromJSON.toIndex, kMaxProtocolStringLength);
}
}
// Test a number of different strings.
testStringMirror('');
testStringMirror('abcdABCD');
testStringMirror('1234');
testStringMirror('"');
testStringMirror('"""');
testStringMirror("'");
testStringMirror("'''");
testStringMirror("'\"'");
testStringMirror('\\');
testStringMirror('\b\t\n\f\r');
testStringMirror('\u0001\u0002\u001E\u001F');
testStringMirror('"a":1,"b":2');
var s = "1234567890"
s = s + s + s + s + s + s + s + s;
assertEquals(kMaxProtocolStringLength, s.length);
testStringMirror(s);
s = s + 'X';
testStringMirror(s);