import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/shared/heapsnapshot/tests/unit/heap-snapshot-worker.js

@@ -0,0 +1,46 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+console.log("Initializing worker.");
+
+self.onmessage = e => {
+  console.log("Starting test.");
+  try {
+    ok(typeof ChromeUtils === "undefined",
+       "Should not have access to ChromeUtils in a worker.");
+    ok(ThreadSafeChromeUtils,
+       "Should have access to ThreadSafeChromeUtils in a worker.");
+    ok(HeapSnapshot,
+       "Should have access to HeapSnapshot in a worker.");
+
+    const filePath = ThreadSafeChromeUtils.saveHeapSnapshot({ globals: [this] });
+    ok(true, "Should be able to save a snapshot.");
+
+    const snapshot = ThreadSafeChromeUtils.readHeapSnapshot(filePath);
+    ok(snapshot, "Should be able to read a heap snapshot");
+    ok(snapshot instanceof HeapSnapshot, "Should be an instanceof HeapSnapshot");
+  } catch (e) {
+    ok(false, "Unexpected error inside worker:\n" + e.toString() + "\n" + e.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"
+  });
+}