1 files changed, 91 insertions, 0 deletions
diff --git a/dom/media/webspeech/synth/test/common.js b/dom/media/webspeech/synth/test/common.js
new file mode 100644
index 000000000..0ce9ec51b
--- /dev/null
+++ b/dom/media/webspeech/synth/test/common.js
@@ -0,0 +1,91 @@
+function synthTestQueue(aTestArgs, aEndFunc) {
+  var utterances = [];
+  for (var i in aTestArgs) {
+    var uargs = aTestArgs[i][0];
+    var win = uargs.win || window;
+    var u = new win.SpeechSynthesisUtterance(uargs.text);
+
+    if (uargs.args) {
+      for (var attr in uargs.args)
+        u[attr] = uargs.args[attr];
+    }
+
+    function onend_handler(e) {
+      is(e.target, utterances.shift(), "Target matches utterances");
+      ok(!speechSynthesis.speaking, "speechSynthesis is not speaking.");
+
+      if (utterances.length) {
+        ok(speechSynthesis.pending, "other utterances queued");
+      } else {
+        ok(!speechSynthesis.pending, "queue is empty, nothing pending.");
+        if (aEndFunc)
+          aEndFunc();
+      }
+    }
+
+    u.addEventListener('start',
+      (function (expectedUri) {
+        return function (e) {
+          if (expectedUri) {
+            var chosenVoice = SpecialPowers.wrap(e).target.chosenVoiceURI;
+            is(chosenVoice, expectedUri, "Incorrect URI is used");
+          }
+        };
+      })(aTestArgs[i][1] ? aTestArgs[i][1].uri : null));
+
+    u.addEventListener('end', onend_handler);
+    u.addEventListener('error', onend_handler);
+
+    u.addEventListener('error',
+      (function (expectedError) {
+        return function onerror_handler(e) {
+          ok(expectedError, "Error in speech utterance '" + e.target.text + "'");
+        };
+      })(aTestArgs[i][1] ? aTestArgs[i][1].err : false));
+
+    utterances.push(u);
+    win.speechSynthesis.speak(u);
+  }
+
+  ok(!speechSynthesis.speaking, "speechSynthesis is not speaking yet.");
+  ok(speechSynthesis.pending, "speechSynthesis has an utterance queued.");
+}
+
+function loadFrame(frameId) {
+  return new Promise(function(resolve, reject) {
+    var frame = document.getElementById(frameId);
+    frame.addEventListener('load', function (e) {
+      frame.contentWindow.document.title = frameId;
+      resolve(frame);
+    });
+    frame.src = 'data:text/html,' + encodeURI('<html><head></head><body></body></html>');
+  });
+}
+
+function waitForVoices(win) {
+  return new Promise(resolve => {
+    function resolver() {
+      if (win.speechSynthesis.getVoices().length) {
+        win.speechSynthesis.removeEventListener('voiceschanged', resolver);
+        resolve();
+      }
+    }
+
+    win.speechSynthesis.addEventListener('voiceschanged', resolver);
+    resolver();
+  });
+}
+
+function loadSpeechTest(fileName, prefs, frameId="testFrame") {
+  loadFrame(frameId).then(frame => {
+    waitForVoices(frame.contentWindow).then(
+      () => document.getElementById("testFrame").src = fileName);
+  });
+}
+
+function testSynthState(win, expectedState) {
+  for (var attr in expectedState) {
+    is(win.speechSynthesis[attr], expectedState[attr],
+      win.document.title + ": '" + attr + '" does not match');
+  }
+}
+\ No newline at end of file