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Diffstat (limited to 'devtools/shared/heapsnapshot/tests/xpcshell/test_DominatorTree_04.js')
-rw-r--r-- | devtools/shared/heapsnapshot/tests/xpcshell/test_DominatorTree_04.js | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/tests/xpcshell/test_DominatorTree_04.js b/devtools/shared/heapsnapshot/tests/xpcshell/test_DominatorTree_04.js new file mode 100644 index 0000000000..2bfe46977f --- /dev/null +++ b/devtools/shared/heapsnapshot/tests/xpcshell/test_DominatorTree_04.js @@ -0,0 +1,30 @@ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ +"use strict"; + +// Test that we can get the retained sizes of dominator trees. + +function run_test() { + const dominatorTree = saveHeapSnapshotAndComputeDominatorTree(); + equal( + typeof dominatorTree.getRetainedSize, + "function", + "getRetainedSize should be a function" + ); + + const size = dominatorTree.getRetainedSize(dominatorTree.root); + ok(size, "should get a size for the root"); + equal(typeof size, "number", "retained sizes should be a number"); + equal(Math.floor(size), size, "size should be an integer"); + Assert.greater(size, 0, "size should be positive"); + Assert.lessOrEqual( + size, + Math.pow(2, 64), + "size should be less than or equal to 2^64" + ); + + const bad = dominatorTree.getRetainedSize(1); + equal(bad, null, "null is returned for unknown node ids"); + + do_test_finished(); +} |