From cb64cf3ce2ea46883fa8bc2b4242dfd07e4551e5 Mon Sep 17 00:00:00 2001
From: Kitson Kelly <me@kitsonkelly.com>
Date: Thu, 16 Apr 2020 00:10:49 +1000
Subject: Add support for AbortController/AbortSignal (#4757)

---
 cli/js/tests/abort_controller_test.ts | 56 +++++++++++++++++++++++++++++++++++
 cli/js/tests/unit_tests.ts            |  1 +
 2 files changed, 57 insertions(+)
 create mode 100644 cli/js/tests/abort_controller_test.ts

(limited to 'cli/js/tests')

diff --git a/cli/js/tests/abort_controller_test.ts b/cli/js/tests/abort_controller_test.ts
new file mode 100644
index 000000000..ecc1abb88
--- /dev/null
+++ b/cli/js/tests/abort_controller_test.ts
@@ -0,0 +1,56 @@
+import { unitTest, assert, assertEquals } from "./test_util.ts";
+
+unitTest(function basicAbortController() {
+  const controller = new AbortController();
+  assert(controller);
+  const { signal } = controller;
+  assert(signal);
+  assertEquals(signal.aborted, false);
+  controller.abort();
+  assertEquals(signal.aborted, true);
+});
+
+unitTest(function signalCallsOnabort() {
+  const controller = new AbortController();
+  const { signal } = controller;
+  let called = false;
+  signal.onabort = (evt): void => {
+    assert(evt);
+    assertEquals(evt.type, "abort");
+    called = true;
+  };
+  controller.abort();
+  assert(called);
+});
+
+unitTest(function signalEventListener() {
+  const controller = new AbortController();
+  const { signal } = controller;
+  let called = false;
+  signal.addEventListener("abort", function (ev) {
+    assert(this === signal);
+    assertEquals(ev.type, "abort");
+    called = true;
+  });
+  controller.abort();
+  assert(called);
+});
+
+unitTest(function onlyAbortsOnce() {
+  const controller = new AbortController();
+  const { signal } = controller;
+  let called = 0;
+  signal.addEventListener("abort", () => called++);
+  signal.onabort = (): void => {
+    called++;
+  };
+  controller.abort();
+  assertEquals(called, 2);
+  controller.abort();
+  assertEquals(called, 2);
+});
+
+unitTest(function controllerHasProperToString() {
+  const actual = Object.prototype.toString.call(new AbortController());
+  assertEquals(actual, "[object AbortController]");
+});
diff --git a/cli/js/tests/unit_tests.ts b/cli/js/tests/unit_tests.ts
index ba3d6746a..7d7ec4821 100644
--- a/cli/js/tests/unit_tests.ts
+++ b/cli/js/tests/unit_tests.ts
@@ -4,6 +4,7 @@
 //
 // Test runner automatically spawns subprocesses for each required permissions combination.
 
+import "./abort_controller_test.ts";
 import "./blob_test.ts";
 import "./body_test.ts";
 import "./buffer_test.ts";
-- 
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