1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_stepping-03.js b/devtools/server/tests/xpcshell/test_stepping-03.js
new file mode 100644
index 0000000000..88422ac0cc
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_stepping-03.js
@@ -0,0 +1,43 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Check basic step-out functionality.
+ */
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee }) => {
+    dumpn("Evaluating test code and waiting for first debugger statement");
+    await executeOnNextTickAndWaitForPause(
+      () => evaluateTestCode(debuggee),
+      threadFront
+    );
+
+    const step1 = await stepOut(threadFront);
+    equal(step1.frame.where.line, 8);
+    equal(step1.why.type, "resumeLimit");
+
+    equal(debuggee.a, 1);
+    equal(debuggee.b, 2);
+  })
+);
+
+function evaluateTestCode(debuggee) {
+  // prettier-ignore
+  Cu.evalInSandbox(
+    `                                   // 1
+    function f() {                      // 2
+      debugger;                         // 3
+      this.a = 1;                       // 4
+      this.b = 2;                       // 5
+    }                                   // 6
+    f();                                // 7
+    `,                                  // 8
+    debuggee,
+    "1.8",
+    "test_stepping-01-test-code.js",
+    1
+  );
+}