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diff --git a/devtools/shared/heapsnapshot/tests/unit/test_ReadHeapSnapshot.js b/devtools/shared/heapsnapshot/tests/unit/test_ReadHeapSnapshot.js
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+++ b/devtools/shared/heapsnapshot/tests/unit/test_ReadHeapSnapshot.js
@@ -0,0 +1,20 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that we can read core dumps into HeapSnapshot instances.
+
+if (typeof Debugger != "function") {
+ const { addDebuggerToGlobal } = Cu.import("resource://gre/modules/jsdebugger.jsm", {});
+ addDebuggerToGlobal(this);
+}
+
+function run_test() {
+ const filePath = ChromeUtils.saveHeapSnapshot({ globals: [this] });
+ ok(true, "Should be able to save a snapshot.");
+
+ const snapshot = ChromeUtils.readHeapSnapshot(filePath);
+ ok(snapshot, "Should be able to read a heap snapshot");
+ ok(snapshot instanceof HeapSnapshot, "Should be an instanceof HeapSnapshot");
+
+ do_test_finished();
+}