debug-conditional-breakpoints.js 6 KB
Newer Older
1
// Copyright 2008 the V8 project authors. All rights reserved.
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
// 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
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug

// Simple debug event handler which just counts the number of break points hit.
var break_point_hit_count;

function listener(event, exec_state, event_data, data) {
  if (event == Debug.DebugEvent.Break) {
    break_point_hit_count++;
  }
};

// Add the debug event listener.
42
Debug.setListener(listener);
43 44 45 46 47

// Test functions.
count = 0;
function f() {};
function g() {h(count++)};
48
function h(x) {var a=x; return a};
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138


// Conditional breakpoint which syntax error.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(f, 0, 0, '{{{');
f();
assertEquals(0, break_point_hit_count);
assertEquals(0, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Conditional breakpoint which evaluates to false.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(f, 0, 0, 'false');
f();
assertEquals(0, break_point_hit_count);
assertEquals(0, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Conditional breakpoint which evaluates to true.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(f, 0, 0, 'true');
f();
assertEquals(1, break_point_hit_count);
assertEquals(1, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Conditional breakpoint which different types of quotes.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(f, 0, 0, '"a" == "a"');
f();
assertEquals(1, break_point_hit_count);
assertEquals(1, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);
break_point_hit_count = 0;
bp = Debug.setBreakPoint(f, 0, 0, "'a' == 'a'");
f();
assertEquals(1, break_point_hit_count);
assertEquals(1, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Changing condition.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(f, 0, 0, '"ab".indexOf("b") > 0');
f();
assertEquals(1, break_point_hit_count);
assertEquals(1, Debug.findBreakPoint(bp, false).hit_count());
Debug.changeBreakPointCondition(bp, 'Math.sin(Math.PI/2) > 1');
f();
assertEquals(1, break_point_hit_count);
assertEquals(1, Debug.findBreakPoint(bp, false).hit_count());
Debug.changeBreakPointCondition(bp, '1==1');
f();
assertEquals(2, break_point_hit_count);
assertEquals(2, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Conditional breakpoint which checks global variable.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(f, 0, 0, 'x==1');
f();
assertEquals(0, break_point_hit_count);
assertEquals(0, Debug.findBreakPoint(bp, false).hit_count());
x=1;
f();
assertEquals(1, break_point_hit_count);
assertEquals(1, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Conditional breakpoint which checks global variable.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(g, 0, 0, 'count % 2 == 0');
for (var i = 0; i < 10; i++) {
  g();
}
assertEquals(5, break_point_hit_count);
assertEquals(5, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Conditional breakpoint which checks a parameter.
break_point_hit_count = 0;
bp = Debug.setBreakPoint(h, 0, 0, 'x % 2 == 0');
for (var i = 0; i < 10; i++) {
  g();
}
assertEquals(5, break_point_hit_count);
assertEquals(5, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Conditional breakpoint which checks a local variable.
break_point_hit_count = 0;
139
bp = Debug.setBreakPoint(h, 0, 22, 'a % 2 == 0');
140 141 142 143 144 145 146 147 148
for (var i = 0; i < 10; i++) {
  g();
}
assertEquals(5, break_point_hit_count);
assertEquals(5, Debug.findBreakPoint(bp, false).hit_count());
Debug.clearBreakPoint(bp);

// Multiple conditional breakpoint which the same condition.
break_point_hit_count = 0;
149 150
bp1 = Debug.setBreakPoint(h, 0, 22, 'a % 2 == 0');
bp2 = Debug.setBreakPoint(h, 0, 22, 'a % 2 == 0');
151 152 153 154 155 156 157 158 159 160 161
for (var i = 0; i < 10; i++) {
  g();
}
assertEquals(5, break_point_hit_count);
assertEquals(5, Debug.findBreakPoint(bp1, false).hit_count());
assertEquals(5, Debug.findBreakPoint(bp2, false).hit_count());
Debug.clearBreakPoint(bp1);
Debug.clearBreakPoint(bp2);

// Multiple conditional breakpoint which different conditions.
break_point_hit_count = 0;
162 163
bp1 = Debug.setBreakPoint(h, 0, 22, 'a % 2 == 0');
bp2 = Debug.setBreakPoint(h, 0, 22, '(a + 1) % 2 == 0');
164 165 166 167 168 169 170 171
for (var i = 0; i < 10; i++) {
  g();
}
assertEquals(10, break_point_hit_count);
assertEquals(5, Debug.findBreakPoint(bp1, false).hit_count());
assertEquals(5, Debug.findBreakPoint(bp2, false).hit_count());
Debug.clearBreakPoint(bp1);
Debug.clearBreakPoint(bp2);