1 files changed, 119 insertions, 0 deletions
diff --git a/testing/web-platform/tests/resources/examples/apisample10.html b/testing/web-platform/tests/resources/examples/apisample10.html
new file mode 100644
index 000000000..69810fe16
--- /dev/null
+++ b/testing/web-platform/tests/resources/examples/apisample10.html
@@ -0,0 +1,119 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+<title>Async Tests and Promises</title>
+</head>
+<body>
+<h1>Async Tests and Promises</h1>
+<p>This test assumes ECMAScript 6 Promise support. Some failures are expected.</p>
+<div id="log"></div>
+<script src="../testharness.js"></script>
+<script src="../testharnessreport.js"></script>
+<script>
+
+test(function() {
+  var p = new Promise(function(resolve, reject) {});
+  assert_true('then' in p);
+  assert_equals(typeof Promise.resolve, 'function');
+  assert_equals(typeof Promise.reject, 'function');
+}, "Promises are supported in your browser");
+
+(function() {
+  var t = async_test("Promise resolution");
+  t.step(function() {
+    Promise.resolve('x').then(
+      t.step_func(function(value) {
+        assert_equals(value, 'x');
+        t.done();
+      }),
+      t.unreached_func('Promise should not reject')
+    );
+  });
+}());
+
+(function() {
+  var t = async_test("Promise rejection");
+  t.step(function() {
+    Promise.reject(Error('fail')).then(
+      t.unreached_func('Promise should reject'),
+      t.step_func(function(reason) {
+        assert_true(reason instanceof Error);
+        assert_equals(reason.message, 'fail');
+        t.done();
+      })
+    );
+  });
+}());
+
+(function() {
+  var t = async_test("Promises resolution chaining");
+  t.step(function() {
+    var resolutions = [];
+    Promise.resolve('a').then(
+      t.step_func(function(value) {
+        resolutions.push(value);
+        return 'b';
+      })
+    ).then(
+      t.step_func(function(value) {
+        resolutions.push(value);
+        return 'c';
+      })
+    ).then(
+      t.step_func(function(value) {
+        resolutions.push(value);
+
+        assert_array_equals(resolutions, ['a', 'b', 'c']);
+        t.done();
+      })
+    ).catch(
+      t.unreached_func('promise should not have rejected')
+    );
+  });
+}());
+
+(function() {
+  var t = async_test("Use of step_func with Promises");
+  t.step(function() {
+    var resolutions = [];
+    Promise.resolve('x').then(
+      t.step_func_done(),
+      t.unreached_func('Promise should not have rejected')
+    );
+  });
+}());
+
+(function() {
+  var t = async_test("Promises and test assertion failures (should fail)");
+  t.step(function() {
+    var resolutions = [];
+    Promise.resolve('x').then(
+      t.step_func(function(value) {
+        assert_true(false, 'This failure is expected');
+      })
+    ).then(
+      t.unreached_func('Promise should not have resolved')
+    ).catch(
+      t.unreached_func('Promise should not have rejected')
+    );
+  });
+}());
+
+(function() {
+  var t = async_test("Use of unreached_func with Promises (should fail)");
+  t.step(function() {
+    var resolutions = [];
+    var r;
+    var p = new Promise(function(resolve, reject) {
+      // Reject instead of resolve, to demonstrate failure.
+      reject(123);
+    });
+    p.then(
+      function(value) {
+        assert_equals(value, 123, 'This should not actually happen');
+      },
+      t.unreached_func('This failure is expected')
+    );
+  });
+}());
+</script>