From 4e2e9be6abed3225406b466099e397acc0f914d2 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <email@mattatobin.com>
Date: Sat, 22 Feb 2020 17:32:39 -0500
Subject: Reclassify heapsnapshot and nsJSInspector as not part of devtools

This resolves Issue #316
---
 .../test_HeapAnalyses_deleteHeapSnapshot_03.js     | 62 ++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 dom/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_03.js

(limited to 'dom/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_03.js')

diff --git a/dom/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_03.js b/dom/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_03.js
new file mode 100644
index 000000000..e648c9407
--- /dev/null
+++ b/dom/heapsnapshot/tests/unit/test_HeapAnalyses_deleteHeapSnapshot_03.js
@@ -0,0 +1,62 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test other dominatorTrees can still be retrieved after deleting a snapshot
+
+function run_test() {
+  run_next_test();
+}
+
+const breakdown = {
+  by: "coarseType",
+  objects: { by: "count", count: true, bytes: true },
+  scripts: { by: "count", count: true, bytes: true },
+  strings: { by: "count", count: true, bytes: true },
+  other: { by: "count", count: true, bytes: true },
+};
+
+function* createSnapshotAndDominatorTree(client) {
+  let snapshotFilePath = saveNewHeapSnapshot();
+  yield client.readHeapSnapshot(snapshotFilePath);
+  let dominatorTreeId = yield client.computeDominatorTree(snapshotFilePath);
+  return { dominatorTreeId, snapshotFilePath };
+}
+
+add_task(function* () {
+  const client = new HeapAnalysesClient();
+
+  let savedSnapshots = [
+    yield createSnapshotAndDominatorTree(client),
+    yield createSnapshotAndDominatorTree(client),
+    yield createSnapshotAndDominatorTree(client)
+  ];
+  ok(true, "Create 3 snapshots and dominator trees");
+
+  yield client.deleteHeapSnapshot(savedSnapshots[1].snapshotFilePath);
+  ok(true, "Snapshot deleted");
+
+  let tree = yield client.getDominatorTree({
+    dominatorTreeId: savedSnapshots[0].dominatorTreeId,
+    breakdown
+  });
+  ok(tree, "Should get a valid tree for first snapshot");
+
+  let threw = false;
+  try {
+    yield client.getDominatorTree({
+      dominatorTreeId: savedSnapshots[1].dominatorTreeId,
+      breakdown
+    });
+  } catch (_) {
+    threw = true;
+  }
+  ok(threw, "getDominatorTree on a deleted snapshot should throw an error");
+
+  tree = yield client.getDominatorTree({
+    dominatorTreeId: savedSnapshots[2].dominatorTreeId,
+    breakdown
+  });
+  ok(tree, "Should get a valid tree for third snapshot");
+
+  client.destroy();
+});
-- 
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