1 files changed, 63 insertions, 0 deletions
diff --git a/dom/midi/tests/MIDITestUtils.js b/dom/midi/tests/MIDITestUtils.js
new file mode 100644
index 0000000000..4d516fc2e4
--- /dev/null
+++ b/dom/midi/tests/MIDITestUtils.js
@@ -0,0 +1,63 @@
+/* eslint-env mozilla/frame-script */
+var MIDITestUtils = {
+  permissionSetup: allow => {
+    let permPromiseRes;
+    let permPromise = new Promise((res, rej) => {
+      permPromiseRes = res;
+    });
+    SpecialPowers.pushPrefEnv(
+      {
+        set: [
+          ["dom.webmidi.enabled", true],
+          ["midi.testing", true],
+          ["midi.prompt.testing", true],
+          ["media.navigator.permission.disabled", allow],
+        ],
+      },
+      () => {
+        permPromiseRes();
+      }
+    );
+    return permPromise;
+  },
+  // This list needs to stay synced with the ports in
+  // dom/midi/TestMIDIPlatformService.
+  inputInfo: {
+    id: "b744eebe-f7d8-499b-872b-958f63c8f522",
+    name: "Test Control MIDI Device Input Port",
+    manufacturer: "Test Manufacturer",
+    version: "1.0.0",
+  },
+  outputInfo: {
+    id: "ab8e7fe8-c4de-436a-a960-30898a7c9a3d",
+    name: "Test Control MIDI Device Output Port",
+    manufacturer: "Test Manufacturer",
+    version: "1.0.0",
+  },
+  stateTestInputInfo: {
+    id: "a9329677-8588-4460-a091-9d4a7f629a48",
+    name: "Test State MIDI Device Input Port",
+    manufacturer: "Test Manufacturer",
+    version: "1.0.0",
+  },
+  stateTestOutputInfo: {
+    id: "478fa225-b5fc-4fa6-a543-d32d9cb651e7",
+    name: "Test State MIDI Device Output Port",
+    manufacturer: "Test Manufacturer",
+    version: "1.0.0",
+  },
+  alwaysClosedTestOutputInfo: {
+    id: "f87d0c76-3c68-49a9-a44f-700f1125c07a",
+    name: "Always Closed MIDI Device Output Port",
+    manufacturer: "Test Manufacturer",
+    version: "1.0.0",
+  },
+  checkPacket: (expected, actual) => {
+    if (expected.length != actual.length) {
+      ok(false, "Packet " + expected + " length not same as packet " + actual);
+    }
+    for (var i = 0; i < expected.length; ++i) {
+      is(expected[i], actual[i], "Packet value " + expected[i] + " matches.");
+    }
+  },
+};