1 files changed, 45 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/resources/start-stop-exceptions.js b/testing/web-platform/tests/webaudio/resources/start-stop-exceptions.js
new file mode 100644
index 0000000000..0d2ea12f6d
--- /dev/null
+++ b/testing/web-platform/tests/webaudio/resources/start-stop-exceptions.js
@@ -0,0 +1,45 @@
+// Test that exceptions are throw for invalid values for start and
+// stop.
+function testStartStop(should, node, options) {
+  // Test non-finite values for start.  These should all throw a TypeError
+  const nonFiniteValues = [NaN, Infinity, -Infinity];
+
+  nonFiniteValues.forEach(time => {
+      should(() => {
+        node.start(time);
+      }, `start(${time})`)
+    .throw(TypeError);
+    });
+
+  should(() => {
+    node.stop();
+  }, 'Calling stop() before start()').throw(DOMException, 'InvalidStateError');
+
+  should(() => {
+    node.start(-1);
+  }, 'start(-1)').throw(RangeError);
+
+  if (options) {
+    options.forEach(test => {
+      should(() => {node.start(...test.args)},
+             'start(' + test.args + ')').throw(test.errorType);
+    });
+  }
+
+  node.start();
+  should(() => {
+    node.start();
+  }, 'Calling start() twice').throw(DOMException, 'InvalidStateError');
+  should(() => {
+    node.stop(-1);
+  }, 'stop(-1)').throw(RangeError);
+
+  // Test non-finite stop times
+  nonFiniteValues.forEach(time => {
+      should(() => {
+        node.stop(time);
+      }, `stop(${time})`)
+    .throw(TypeError);
+    });
+}
+