1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/jit-test/tests/debug/Frame-onStep-lines-01.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,78 @@
1.4 +// Test that a frame's onStep handler gets called at least once on each line of a function.
1.5 +
1.6 +var g = newGlobal();
1.7 +var dbg = new Debugger(g);
1.8 +
1.9 +// When we hit a 'debugger' statement, set offsets to the frame's script's
1.10 +// table of line offsets --- a sparse array indexed by line number. Begin
1.11 +// single-stepping the current frame; for each source line we hit, delete
1.12 +// the line's entry in offsets. Thus, at the end, offsets is an array with
1.13 +// an element for each line we did not reach.
1.14 +var doSingleStep = true;
1.15 +var offsets;
1.16 +dbg.onDebuggerStatement = function (frame) {
1.17 + var script = frame.script;
1.18 + offsets = script.getAllOffsets();
1.19 + print("debugger line: " + script.getOffsetLine(frame.offset));
1.20 + print("original lines: " + uneval(Object.keys(offsets)));
1.21 + if (doSingleStep) {
1.22 + frame.onStep = function onStepHandler() {
1.23 + var line = script.getOffsetLine(this.offset);
1.24 + delete offsets[line];
1.25 + };
1.26 + }
1.27 +};
1.28 +
1.29 +g.eval(
1.30 + 'function t(a, b, c) { \n' +
1.31 + ' debugger; \n' +
1.32 + ' var x = a; \n' +
1.33 + ' x += b; \n' +
1.34 + ' if (x < 10) \n' +
1.35 + ' x -= c; \n' +
1.36 + ' return x; \n' +
1.37 + '} \n'
1.38 + );
1.39 +
1.40 +// This should stop at every line but the first of the function.
1.41 +g.eval('t(1,2,3)');
1.42 +assertEq(Object.keys(offsets).length, 1);
1.43 +
1.44 +// This should stop at every line but the first of the function, and the
1.45 +// body of the 'if'.
1.46 +g.eval('t(10,20,30)');
1.47 +assertEq(Object.keys(offsets).length, 2);
1.48 +
1.49 +// This shouldn't stop at all. It's the frame that's in single-step mode,
1.50 +// not the script, so the prior execution of t in single-step mode should
1.51 +// have no effect on this one.
1.52 +doSingleStep = false;
1.53 +g.eval('t(0, 0, 0)');
1.54 +assertEq(Object.keys(offsets).length, 6);
1.55 +doSingleStep = true;
1.56 +
1.57 +// Single-step in an eval frame. This should reach every line but the
1.58 +// first.
1.59 +g.eval(
1.60 + 'debugger; \n' +
1.61 + 'var a=1, b=2, c=3; \n' +
1.62 + 'var x = a; \n' +
1.63 + 'x += b; \n' +
1.64 + 'if (x < 10) \n' +
1.65 + ' x -= c; \n'
1.66 + );
1.67 +print("final lines: " + uneval(Object.keys(offsets)));
1.68 +assertEq(Object.keys(offsets).length, 1);
1.69 +
1.70 +// Single-step in a global code frame. This should reach every line but the
1.71 +// first.
1.72 +g.evaluate(
1.73 + 'debugger; \n' +
1.74 + 'var a=1, b=2, c=3; \n' +
1.75 + 'var x = a; \n' +
1.76 + 'x += b; \n' +
1.77 + 'if (x < 10) \n' +
1.78 + ' x -= c; \n'
1.79 + );
1.80 +print("final lines: " + uneval(Object.keys(offsets)));
1.81 +assertEq(Object.keys(offsets).length, 1);
