1 files changed, 143 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/tests/xpcshell/test_census-tree-node-08.js b/devtools/shared/heapsnapshot/tests/xpcshell/test_census-tree-node-08.js
new file mode 100644
index 0000000000..0e8e2ebcc1
--- /dev/null
+++ b/devtools/shared/heapsnapshot/tests/xpcshell/test_census-tree-node-08.js
@@ -0,0 +1,143 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Test inverting CensusTreeNode with a non-allocation stack breakdown.
+ */
+
+function run_test() {
+  const BREAKDOWN = {
+    by: "filename",
+    then: {
+      by: "internalType",
+      then: { by: "count", count: true, bytes: true },
+    },
+    noFilename: {
+      by: "internalType",
+      then: { by: "count", count: true, bytes: true },
+    },
+  };
+
+  const REPORT = {
+    "http://example.com/app.js": {
+      JSScript: { count: 10, bytes: 100 },
+    },
+    "http://example.com/ads.js": {
+      "js::LazyScript": { count: 20, bytes: 200 },
+    },
+    "http://example.com/trackers.js": {
+      JSScript: { count: 30, bytes: 300 },
+    },
+    noFilename: {
+      "js::jit::JitCode": { count: 40, bytes: 400 },
+    },
+  };
+
+  const EXPECTED = {
+    name: null,
+    bytes: 0,
+    totalBytes: 1000,
+    count: 0,
+    totalCount: 100,
+    children: [
+      {
+        name: "noFilename",
+        bytes: 0,
+        totalBytes: 400,
+        count: 0,
+        totalCount: 40,
+        children: [
+          {
+            name: "js::jit::JitCode",
+            bytes: 400,
+            totalBytes: 400,
+            count: 40,
+            totalCount: 40,
+            children: undefined,
+            id: 9,
+            parent: 8,
+            reportLeafIndex: 8,
+          },
+        ],
+        id: 8,
+        parent: 1,
+        reportLeafIndex: undefined,
+      },
+      {
+        name: "http://example.com/trackers.js",
+        bytes: 0,
+        totalBytes: 300,
+        count: 0,
+        totalCount: 30,
+        children: [
+          {
+            name: "JSScript",
+            bytes: 300,
+            totalBytes: 300,
+            count: 30,
+            totalCount: 30,
+            children: undefined,
+            id: 7,
+            parent: 6,
+            reportLeafIndex: 6,
+          },
+        ],
+        id: 6,
+        parent: 1,
+        reportLeafIndex: undefined,
+      },
+      {
+        name: "http://example.com/ads.js",
+        bytes: 0,
+        totalBytes: 200,
+        count: 0,
+        totalCount: 20,
+        children: [
+          {
+            name: "js::LazyScript",
+            bytes: 200,
+            totalBytes: 200,
+            count: 20,
+            totalCount: 20,
+            children: undefined,
+            id: 5,
+            parent: 4,
+            reportLeafIndex: 4,
+          },
+        ],
+        id: 4,
+        parent: 1,
+        reportLeafIndex: undefined,
+      },
+      {
+        name: "http://example.com/app.js",
+        bytes: 0,
+        totalBytes: 100,
+        count: 0,
+        totalCount: 10,
+        children: [
+          {
+            name: "JSScript",
+            bytes: 100,
+            totalBytes: 100,
+            count: 10,
+            totalCount: 10,
+            children: undefined,
+            id: 3,
+            parent: 2,
+            reportLeafIndex: 2,
+          },
+        ],
+        id: 2,
+        parent: 1,
+        reportLeafIndex: undefined,
+      },
+    ],
+    id: 1,
+    parent: undefined,
+    reportLeafIndex: undefined,
+  };
+
+  compareCensusViewData(BREAKDOWN, REPORT, EXPECTED);
+}