1 files changed, 112 insertions, 0 deletions
diff --git a/devtools/server/tests/unit/test_promises_client_getdependentpromises.js b/devtools/server/tests/unit/test_promises_client_getdependentpromises.js
new file mode 100644
index 000000000..8900cf81c
--- /dev/null
+++ b/devtools/server/tests/unit/test_promises_client_getdependentpromises.js
@@ -0,0 +1,112 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Test that we can get the list of dependent promises from the ObjectClient.
+ */
+
+"use strict";
+
+const { PromisesFront } = require("devtools/shared/fronts/promises");
+
+var events = require("sdk/event/core");
+
+add_task(function* () {
+  let client = yield startTestDebuggerServer("test-promises-dependentpromises");
+  let chromeActors = yield getChromeActors(client);
+  yield attachTab(client, chromeActors);
+
+  ok(Promise.toString().includes("native code"), "Expect native DOM Promise.");
+
+  yield testGetDependentPromises(client, chromeActors, () => {
+    let p = new Promise(() => {});
+    p.name = "p";
+    let q = p.then();
+    q.name = "q";
+    let r = p.then(null, () => {});
+    r.name = "r";
+
+    return p;
+  });
+
+  let response = yield listTabs(client);
+  let targetTab = findTab(response.tabs, "test-promises-dependentpromises");
+  ok(targetTab, "Found our target tab.");
+  yield attachTab(client, targetTab);
+
+  yield testGetDependentPromises(client, targetTab, () => {
+    const debuggee =
+      DebuggerServer.getTestGlobal("test-promises-dependentpromises");
+
+    let p = new debuggee.Promise(() => {});
+    p.name = "p";
+    let q = p.then();
+    q.name = "q";
+    let r = p.then(null, () => {});
+    r.name = "r";
+
+    return p;
+  });
+
+  yield close(client);
+});
+
+function* testGetDependentPromises(client, form, makePromises) {
+  let front = PromisesFront(client, form);
+
+  yield front.attach();
+  yield front.listPromises();
+
+  // Get the grip for promise p
+  let onNewPromise = new Promise(resolve => {
+    events.on(front, "new-promises", promises => {
+      for (let p of promises) {
+        if (p.preview.ownProperties.name &&
+            p.preview.ownProperties.name.value === "p") {
+          resolve(p);
+        }
+      }
+    });
+  });
+
+  let promise = makePromises();
+
+  let grip = yield onNewPromise;
+  ok(grip, "Found our promise p.");
+
+  let objectClient = new ObjectClient(client, grip);
+  ok(objectClient, "Got Object Client.");
+
+  // Get the dependent promises for promise p and assert that the list of
+  // dependent promises is correct
+  yield new Promise(resolve => {
+    objectClient.getDependentPromises(response => {
+      let dependentNames = response.promises.map(p =>
+        p.preview.ownProperties.name.value);
+      let expectedDependentNames = ["q", "r"];
+
+      equal(dependentNames.length, expectedDependentNames.length,
+        "Got expected number of dependent promises.");
+
+      for (let i = 0; i < dependentNames.length; i++) {
+        equal(dependentNames[i], expectedDependentNames[i],
+          "Got expected dependent name.");
+      }
+
+      for (let p of response.promises) {
+        equal(p.type, "object", "Expect type to be Object.");
+        equal(p.class, "Promise", "Expect class to be Promise.");
+        equal(typeof p.promiseState.creationTimestamp, "number",
+          "Expect creation timestamp to be a number.");
+        ok(!p.promiseState.timeToSettle,
+          "Expect time to settle to be undefined.");
+      }
+
+      resolve();
+    });
+  });
+
+  yield front.detach();
+  // Appease eslint
+  void promise;
+}