1 files changed, 46 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_dbgactor.js b/devtools/server/tests/xpcshell/test_dbgactor.js
new file mode 100644
index 0000000000..cb0cf8f7d7
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_dbgactor.js
@@ -0,0 +1,46 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const xpcInspector = Cc["@mozilla.org/jsinspector;1"].getService(
+  Ci.nsIJSInspector
+);
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee }) => {
+    Assert.equal(xpcInspector.eventLoopNestLevel, 0);
+
+    const packet = await executeOnNextTickAndWaitForPause(
+      () => evalCode(debuggee),
+      threadFront
+    );
+
+    Assert.equal(false, "error" in packet);
+    Assert.ok("actor" in packet);
+    Assert.ok("why" in packet);
+    Assert.equal(packet.why.type, "debuggerStatement");
+
+    // Reach around the protocol to check that the debuggee is in the state
+    // we expect.
+    Assert.ok(debuggee.a);
+    Assert.ok(!debuggee.b);
+
+    Assert.equal(xpcInspector.eventLoopNestLevel, 1);
+
+    // Let the debuggee continue execution.
+    await threadFront.resume();
+
+    // Now make sure that we've run the code after the debugger statement...
+    Assert.ok(debuggee.b);
+
+    Assert.equal(xpcInspector.eventLoopNestLevel, 0);
+  })
+);
+
+function evalCode(debuggee) {
+  Cu.evalInSandbox(
+    "var a = true; var b = false; debugger; var b = true;",
+    debuggee
+  );
+}