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      1 // Copyright 2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Flags: --expose-debug-as debug
     29 // Test the mirror object for string values
     30 
     31 const kMaxProtocolStringLength = 80; // Constant from mirror-delay.js
     32 
     33 function testStringMirror(s) {
     34   // Create mirror and JSON representation.
     35   var mirror = debug.MakeMirror(s);
     36   var serializer = debug.MakeMirrorSerializer();
     37   var json = JSON.stringify(serializer.serializeValue(mirror));
     38 
     39   // Check the mirror hierachy.
     40   assertTrue(mirror instanceof debug.Mirror);
     41   assertTrue(mirror instanceof debug.ValueMirror);
     42   assertTrue(mirror instanceof debug.StringMirror);
     43 
     44   // Check the mirror properties.
     45   assertTrue(mirror.isString());
     46   assertEquals('string', mirror.type());
     47   assertTrue(mirror.isPrimitive());
     48 
     49   // Test text representation
     50   if (s.length <= kMaxProtocolStringLength) {
     51     assertEquals(s, mirror.toText());
     52   } else {
     53     assertEquals(s.substring(0, kMaxProtocolStringLength),
     54                  mirror.toText().substring(0, kMaxProtocolStringLength));
     55   }
     56 
     57   // Parse JSON representation and check.
     58   var fromJSON = eval('(' + json + ')');
     59   assertEquals('string', fromJSON.type);
     60   if (s.length <= kMaxProtocolStringLength) {
     61     assertEquals(s, fromJSON.value);
     62   } else {
     63     assertEquals(s.substring(0, kMaxProtocolStringLength),
     64                  fromJSON.value.substring(0, kMaxProtocolStringLength));
     65     assertEquals(fromJSON.fromIndex, 0);
     66     assertEquals(fromJSON.toIndex, kMaxProtocolStringLength);
     67   }
     68 }
     69 
     70 // Test a number of different strings.
     71 testStringMirror('');
     72 testStringMirror('abcdABCD');
     73 testStringMirror('1234');
     74 testStringMirror('"');
     75 testStringMirror('"""');
     76 testStringMirror("'");
     77 testStringMirror("'''");
     78 testStringMirror("'\"'");
     79 testStringMirror('\\');
     80 testStringMirror('\b\t\n\f\r');
     81 testStringMirror('\u0001\u0002\u001E\u001F');
     82 testStringMirror('"a":1,"b":2');
     83 
     84 var s = "1234567890"
     85 s = s + s + s + s + s + s + s + s;
     86 assertEquals(kMaxProtocolStringLength, s.length);
     87 testStringMirror(s);
     88 s = s + 'X';
     89 testStringMirror(s);
     90