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<!--
Bug 1067491 - Test recording allocations.
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<title>Memory monitoring actor test</title>
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<pre id="test">
<script src="memory-helpers.js" type="application/javascript;version=1.8"></script>
<script>
window.onload = function() {
SimpleTest.waitForExplicitFinish();
Task.spawn(function* () {
var { memory, client } = yield startServerAndGetSelectedTabMemory();
yield memory.attach();
yield memory.startRecordingAllocations();
ok(true, "Can start recording allocations");
// Allocate some objects.
var alloc1, alloc2, alloc3;
(function outer() {
(function middle() {
(function inner() {
alloc1 = {}; alloc1.line = Error().lineNumber;
alloc2 = []; alloc2.line = Error().lineNumber;
alloc3 = new function() {}; alloc3.line = Error().lineNumber;
}());
}());
}());
var response = yield memory.getAllocations();
yield memory.stopRecordingAllocations();
ok(true, "Can stop recording allocations");
// Filter out allocations by library and test code, and get only the
// allocations that occurred in our test case above.
function isTestAllocation(alloc) {
var frame = response.frames[alloc];
return frame
&& frame.functionDisplayName === "inner"
&& (frame.line === alloc1.line
|| frame.line === alloc2.line
|| frame.line === alloc3.line);
}
var testAllocations = response.allocations.filter(isTestAllocation);
ok(testAllocations.length >= 3,
"Should find our 3 test allocations (plus some allocations for the error "
+ "objects used to get line numbers)");
// For each of the test case's allocations, ensure that the parent frame
// indices are correct. Also test that we did get an allocation at each
// line we expected (rather than a bunch on the first line and none on the
// others, etc).
var expectedLines = new Set([alloc1.line, alloc2.line, alloc3.line]);
for (var alloc of testAllocations) {
var innerFrame = response.frames[alloc];
ok(innerFrame, "Should get the inner frame");
is(innerFrame.functionDisplayName, "inner");
expectedLines.delete(innerFrame.line);
var middleFrame = response.frames[innerFrame.parent];
ok(middleFrame, "Should get the middle frame");
is(middleFrame.functionDisplayName, "middle");
var outerFrame = response.frames[middleFrame.parent];
ok(outerFrame, "Should get the outer frame");
is(outerFrame.functionDisplayName, "outer");
// Not going to test the rest of the frames because they are Task.jsm
// and promise frames and it gets gross. Plus, I wouldn't want this test
// to start failing if they changed their implementations in a way that
// added or removed stack frames here.
}
is(expectedLines.size, 0,
"Should have found all the expected lines");
yield memory.detach();
destroyServerAndFinish(client);
});
};
</script>
</pre>
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