v8/test/mjsunit/tools/logreader.js

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// Load CSV Parser and Log Reader implementations from <project root>/tools.
// Files: tools/csvparser.js tools/logreader.js


(function testAddressParser() {
  var reader = new devtools.profiler.LogReader({});
  var parser = reader.createAddressParser('test');

  // Test that 0x values are parsed, and prevAddresses_ are untouched.
  assertFalse('test' in reader.prevAddresses_);
  assertEquals(0, parser('0x0'));
  assertFalse('test' in reader.prevAddresses_);
  assertEquals(0x100, parser('0x100'));
  assertFalse('test' in reader.prevAddresses_);
  assertEquals(0xffffffff, parser('0xffffffff'));
  assertFalse('test' in reader.prevAddresses_);

  // Test that values that has no '+' or '-' prefix are parsed
  // and saved to prevAddresses_.
  assertEquals(0, parser('0'));
  assertEquals(0, reader.prevAddresses_.test);
  assertEquals(0x100, parser('100'));
  assertEquals(0x100, reader.prevAddresses_.test);
  assertEquals(0xffffffff, parser('ffffffff'));
  assertEquals(0xffffffff, reader.prevAddresses_.test);

  // Test that values prefixed with '+' or '-' are treated as deltas,
  // and prevAddresses_ is updated.
  // Set base value.
  assertEquals(0x100, parser('100'));
  assertEquals(0x100, reader.prevAddresses_.test);
  assertEquals(0x200, parser('+100'));
  assertEquals(0x200, reader.prevAddresses_.test);
  assertEquals(0x100, parser('-100'));
  assertEquals(0x100, reader.prevAddresses_.test);
})();


(function testAddressParser() {
  var reader = new devtools.profiler.LogReader({});

  assertEquals([0x10000000, 0x10001000, 0xffff000, 0x10000000],
               reader.processStack(0x10000000, ['overflow',
                   '+1000', '-2000', '+1000']));
})();


(function testExpandBackRef() {
  var reader = new devtools.profiler.LogReader({});

  assertEquals('aaaaaaaa', reader.expandBackRef_('aaaaaaaa'));
  assertEquals('aaaaaaaa', reader.expandBackRef_('#1'));
  assertEquals('bbbbaaaa', reader.expandBackRef_('bbbb#2:4'));
  assertEquals('"#1:1"', reader.expandBackRef_('"#1:1"'));
})();


// See http://code.google.com/p/v8/issues/detail?id=420
(function testReadingTruncatedLog() {
  // Having an incorrect event in the middle of a log should throw an exception.
  var reader1 = new devtools.profiler.LogReader({});
  assertThrows(function() {
    reader1.processLogChunk('alias,a,b\nxxxx\nalias,c,d\n');
  });

  // But having it as the last record should not.
  var reader2 = new devtools.profiler.LogReader({});
  assertDoesNotThrow(function() {
    reader2.processLogChunk('alias,a,b\nalias,c,d\nxxxx');
  });
})();