1 files changed, 48 insertions, 0 deletions
diff --git a/dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_03.js b/dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_03.js
new file mode 100644
index 000000000..486e250b5
--- /dev/null
+++ b/dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_03.js
@@ -0,0 +1,48 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the HeapAnalyses{Client,Worker} bubbles errors properly when things
+// go wrong.
+
+function run_test() {
+  run_next_test();
+}
+
+add_task(function* () {
+  const client = new HeapAnalysesClient();
+
+  // Snapshot file path to a file that doesn't exist.
+  let failed = false;
+  try {
+    yield client.readHeapSnapshot(getFilePath("foo-bar-baz" + Math.random(), true));
+  } catch (e) {
+    failed = true;
+  }
+  ok(failed, "should not read heap snapshots that do not exist");
+
+  // Snapshot file path to a file that is not a heap snapshot.
+  failed = false;
+  try {
+    yield client.readHeapSnapshot(getFilePath("test_HeapAnalyses_takeCensus_03.js"));
+  } catch (e) {
+    failed = true;
+  }
+  ok(failed, "should not be able to read a file that is not a heap snapshot as a heap snapshot");
+
+  const snapshotFilePath = saveNewHeapSnapshot();
+  yield client.readHeapSnapshot(snapshotFilePath);
+  ok(true, "Should have read the heap snapshot");
+
+  // Bad census breakdown options.
+  failed = false;
+  try {
+    yield client.takeCensus(snapshotFilePath, {
+      breakdown: { by: "some classification that we do not have" }
+    });
+  } catch (e) {
+    failed = true;
+  }
+  ok(failed, "should not be able to breakdown by an unknown classification");
+
+  client.destroy();
+});