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-rw-r--r--devtools/shared/heapsnapshot/tests/xpcshell/dominator-tree-worker.js54
1 files changed, 54 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/tests/xpcshell/dominator-tree-worker.js b/devtools/shared/heapsnapshot/tests/xpcshell/dominator-tree-worker.js
new file mode 100644
index 0000000000..e50bd80932
--- /dev/null
+++ b/devtools/shared/heapsnapshot/tests/xpcshell/dominator-tree-worker.js
@@ -0,0 +1,54 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* eslint-env mozilla/chrome-worker */
+
+"use strict";
+
+console.log("Initializing worker.");
+
+self.onmessage = e => {
+ console.log("Starting test.");
+ try {
+ const path = ChromeUtils.saveHeapSnapshot({ runtime: true });
+ const snapshot = ChromeUtils.readHeapSnapshot(path);
+
+ const dominatorTree = snapshot.computeDominatorTree();
+ ok(dominatorTree);
+ ok(DominatorTree.isInstance(dominatorTree));
+
+ let threw = false;
+ try {
+ new DominatorTree();
+ } catch (excp) {
+ threw = true;
+ }
+ ok(threw, "Constructor shouldn't be usable");
+ } catch (ex) {
+ ok(
+ false,
+ "Unexpected error inside worker:\n" + ex.toString() + "\n" + ex.stack
+ );
+ } finally {
+ done();
+ }
+};
+
+// Proxy assertions to the main thread.
+function ok(val, msg) {
+ console.log("ok(" + !!val + ', "' + msg + '")');
+ self.postMessage({
+ type: "assertion",
+ passed: !!val,
+ msg,
+ stack: Error().stack,
+ });
+}
+
+// Tell the main thread we are done with the tests.
+function done() {
+ console.log("done()");
+ self.postMessage({
+ type: "done",
+ });
+}