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-rw-r--r--dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_05.js44
1 files changed, 44 insertions, 0 deletions
diff --git a/dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_05.js b/dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_05.js
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index 000000000..7e16d9f00
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+++ b/dom/heapsnapshot/tests/unit/test_HeapAnalyses_takeCensus_05.js
@@ -0,0 +1,44 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that the HeapAnalyses{Client,Worker} can take censuses and return
+// a CensusTreeNode.
+
+function run_test() {
+ run_next_test();
+}
+
+const BREAKDOWN = {
+ by: "internalType",
+ then: { by: "count", count: true, bytes: true }
+};
+
+add_task(function* () {
+ const client = new HeapAnalysesClient();
+
+ const snapshotFilePath = saveNewHeapSnapshot();
+ yield client.readHeapSnapshot(snapshotFilePath);
+ ok(true, "Should have read the heap snapshot");
+
+ const { report } = yield client.takeCensus(snapshotFilePath, {
+ breakdown: BREAKDOWN
+ });
+
+ const { report: treeNode } = yield client.takeCensus(snapshotFilePath, {
+ breakdown: BREAKDOWN
+ }, {
+ asTreeNode: true
+ });
+
+ ok(treeNode.children.length > 0, "treeNode has children");
+ ok(treeNode.children.every(type => {
+ return "name" in type &&
+ "bytes" in type &&
+ "count" in type;
+ }), "all of tree node's children have name, bytes, count");
+
+ compareCensusViewData(BREAKDOWN, report, treeNode,
+ "Returning census as a tree node represents same data as the report");
+
+ client.destroy();
+});