Auto merge of #13612 - szeged:test-api-impl, r=jdm

WebBluetooth Test API and tests

<!-- Please describe your changes on the following line: -->

This patch depends on the [devices mock device support PR](https://github.com/servo/devices/pull/17).
After it lands, the Cargo files can be updated.
1. Adjust to the changes in [devices mock device support PR](https://github.com/servo/devices/pull/17).
2. WebBluetooth Test API implementation. Based on : https://webbluetoothcg.github.io/web-bluetooth/tests.html
3. Wpt tests for the already landed WebBluetooth functions.

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors

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- [x] There are tests for these changes

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5 files changed, 85 insertions, 0 deletions

diff --git a/components/script/dom/mod.rs b/components/script/dom/mod.rs
index 14498823424..d419d41ec61 100644
--- a/components/script/dom/mod.rs
+++ b/components/script/dom/mod.rs
@@ -399,6 +399,7 @@ pub mod testbinding;
 pub mod testbindingiterable;
 pub mod testbindingpairiterable;
 pub mod testbindingproxy;
+pub mod testrunner;
 pub mod text;
 pub mod textdecoder;
 pub mod textencoder;
diff --git a/components/script/dom/testrunner.rs b/components/script/dom/testrunner.rs
new file mode 100644
index 00000000000..f96ab6dbf65
--- /dev/null
+++ b/components/script/dom/testrunner.rs
@@ -0,0 +1,53 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use bluetooth_traits::BluetoothMethodMsg;
+use dom::bindings::codegen::Bindings::TestRunnerBinding;
+use dom::bindings::codegen::Bindings::TestRunnerBinding::TestRunnerMethods;
+use dom::bindings::error::{Error, ErrorResult};
+use dom::bindings::js::Root;
+use dom::bindings::reflector::{Reflectable, Reflector, reflect_dom_object};
+use dom::bindings::str::DOMString;
+use dom::globalscope::GlobalScope;
+use ipc_channel::ipc::{self, IpcSender};
+
+// https://webbluetoothcg.github.io/web-bluetooth/tests#test-runner
+ #[dom_struct]
+pub struct TestRunner {
+    reflector_: Reflector,
+}
+
+impl TestRunner {
+    pub fn new_inherited() -> TestRunner {
+        TestRunner {
+            reflector_: Reflector::new(),
+        }
+    }
+
+    pub fn new(global: &GlobalScope) -> Root<TestRunner> {
+        reflect_dom_object(box TestRunner::new_inherited(),
+                           global,
+                           TestRunnerBinding::Wrap)
+    }
+
+    fn get_bluetooth_thread(&self) -> IpcSender<BluetoothMethodMsg> {
+        self.global().as_window().bluetooth_thread()
+    }
+}
+
+impl TestRunnerMethods for TestRunner {
+    // https://webbluetoothcg.github.io/web-bluetooth/tests#setBluetoothMockDataSet
+    fn SetBluetoothMockDataSet(&self, dataSetName: DOMString) -> ErrorResult {
+        let (sender, receiver) = ipc::channel().unwrap();
+        self.get_bluetooth_thread().send(BluetoothMethodMsg::Test(String::from(dataSetName), sender)).unwrap();
+        match receiver.recv().unwrap().into() {
+            Ok(()) => {
+                Ok(())
+            },
+            Err(error) => {
+                Err(Error::from(error))
+            },
+        }
+    }
+}
diff --git a/components/script/dom/webidls/TestRunner.webidl b/components/script/dom/webidls/TestRunner.webidl
new file mode 100644
index 00000000000..0326c14dbec
--- /dev/null
+++ b/components/script/dom/webidls/TestRunner.webidl
@@ -0,0 +1,16 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// https://webbluetoothcg.github.io/web-bluetooth/tests#test-runner
+
+// callback BluetoothManualChooserEventsCallback = void(sequence<DOMString> events);
+
+[Pref="dom.bluetooth.testing.enabled", Exposed=Window]
+interface TestRunner {
+  [Throws]
+  void setBluetoothMockDataSet(DOMString dataSetName);
+  // void setBluetoothManualChooser();
+  // void getBluetoothManualChooserEvents(BluetoothManualChooserEventsCallback callback);
+  // void sendBluetoothManualChooserEvent(DOMString event, DOMString argument);
+};
diff --git a/components/script/dom/webidls/Window.webidl b/components/script/dom/webidls/Window.webidl
index ad3494b6f5f..5e7e08d4b18 100644
--- a/components/script/dom/webidls/Window.webidl
+++ b/components/script/dom/webidls/Window.webidl
@@ -185,3 +185,10 @@ Window implements WindowLocalStorage;
 
 // http://w3c.github.io/animation-timing/#framerequestcallback
 callback FrameRequestCallback = void (DOMHighResTimeStamp time);
+
+// https://webbluetoothcg.github.io/web-bluetooth/tests#test-interfaces
+partial interface Window {
+   [Pref="dom.bluetooth.testing.enabled", Exposed=Window]
+   readonly attribute TestRunner testRunner;
+   //readonly attribute EventSender eventSender;
+};
diff --git a/components/script/dom/window.rs b/components/script/dom/window.rs
index c77ed80cff9..3d3d7dde2a7 100644
--- a/components/script/dom/window.rs
+++ b/components/script/dom/window.rs
@@ -45,6 +45,7 @@ use dom::performance::Performance;
 use dom::promise::Promise;
 use dom::screen::Screen;
 use dom::storage::Storage;
+use dom::testrunner::TestRunner;
 use euclid::{Point2D, Rect, Size2D};
 use fetch;
 use ipc_channel::ipc::{self, IpcSender};
@@ -239,6 +240,8 @@ pub struct Window {
 
     /// All the MediaQueryLists we need to update
     media_query_lists: WeakMediaQueryListVec,
+
+    test_runner: MutNullableHeap<JS<TestRunner>>,
 }
 
 impl Window {
@@ -881,6 +884,10 @@ impl WindowMethods for Window {
     fn Fetch(&self, input: RequestOrUSVString, init: &RequestInit) -> Rc<Promise> {
         fetch::Fetch(&self.upcast(), input, init)
     }
+
+    fn TestRunner(&self) -> Root<TestRunner> {
+        self.test_runner.or_init(|| TestRunner::new(self.upcast()))
+    }
 }
 
 impl Window {
@@ -1588,6 +1595,7 @@ impl Window {
             error_reporter: error_reporter,
             scroll_offsets: DOMRefCell::new(HashMap::new()),
             media_query_lists: WeakMediaQueryListVec::new(),
+            test_runner: Default::default(),
         };
 
         WindowBinding::Wrap(runtime.cx(), win)