1 files changed, 59 insertions, 0 deletions
diff --git a/devtools/server/tests/xpcshell/test_promise_state-02.js b/devtools/server/tests/xpcshell/test_promise_state-02.js
new file mode 100644
index 0000000000..e1219f545c
--- /dev/null
+++ b/devtools/server/tests/xpcshell/test_promise_state-02.js
@@ -0,0 +1,59 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+/* eslint-disable max-nested-callbacks */
+
+"use strict";
+
+/**
+ * Test that the preview in a Promise's grip is correct when the Promise is
+ * fulfilled.
+ */
+
+add_task(
+  threadFrontTest(async ({ threadFront, debuggee }) => {
+    const packet = await executeOnNextTickAndWaitForPause(
+      () => evalCode(debuggee),
+      threadFront
+    );
+
+    const environment = await packet.frame.getEnvironment();
+    const grip = environment.bindings.variables.p.value;
+
+    ok(grip.preview);
+    equal(grip.class, "Promise");
+    equal(grip.preview.ownProperties["<state>"].value, "fulfilled");
+    equal(
+      grip.preview.ownProperties["<value>"].value.actorID,
+      packet.frame.arguments[0].actorID,
+      "The promise's fulfilled state value in the preview should be the same " +
+        "value passed to the then function"
+    );
+
+    const objClient = threadFront.pauseGrip(grip);
+    const { promiseState } = await objClient.getPromiseState();
+    equal(promiseState.state, "fulfilled");
+    equal(
+      promiseState.value.getGrip().actorID,
+      packet.frame.arguments[0].actorID,
+      "The promise's fulfilled state value in getPromiseState() should be " +
+        "the same value passed to the then function"
+    );
+  })
+);
+
+function evalCode(debuggee) {
+  /* eslint-disable mozilla/var-only-at-top-level, no-unused-vars */
+  // prettier-ignore
+  Cu.evalInSandbox(
+    "doTest();\n" +
+    function doTest() {
+      var resolved = Promise.resolve({});
+      resolved.then(() => {
+        var p = resolved;
+        debugger;
+      });
+    },
+    debuggee
+  );
+  /* eslint-enable mozilla/var-only-at-top-level, no-unused-vars */
+}