1 files changed, 79 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-gainnode-interface/ctor-gain.html b/testing/web-platform/tests/webaudio/the-audio-api/the-gainnode-interface/ctor-gain.html
new file mode 100644
index 0000000000..dec273e969
--- /dev/null
+++ b/testing/web-platform/tests/webaudio/the-audio-api/the-gainnode-interface/ctor-gain.html
@@ -0,0 +1,79 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>
+      Test Constructor: Gain
+    </title>
+    <script src="/resources/testharness.js"></script>
+    <script src="/resources/testharnessreport.js"></script>
+    <script src="/webaudio/resources/audit-util.js"></script>
+    <script src="/webaudio/resources/audit.js"></script>
+    <script src="/webaudio/resources/audionodeoptions.js"></script>
+  </head>
+  <body>
+    <script id="layout-test-code">
+      let context;
+
+      let audit = Audit.createTaskRunner();
+
+      audit.define('initialize', (task, should) => {
+        context = initializeContext(should);
+        task.done();
+      });
+
+      audit.define('invalid constructor', (task, should) => {
+        testInvalidConstructor(should, 'GainNode', context);
+        task.done();
+      });
+
+      audit.define('default constructor', (task, should) => {
+        let prefix = 'node0';
+        let node = testDefaultConstructor(should, 'GainNode', context, {
+          prefix: prefix,
+          numberOfInputs: 1,
+          numberOfOutputs: 1,
+          channelCount: 2,
+          channelCountMode: 'max',
+          channelInterpretation: 'speakers'
+        });
+
+        testDefaultAttributes(should, node, prefix, [{name: 'gain', value: 1}]);
+
+        task.done();
+      });
+
+      audit.define('test AudioNodeOptions', (task, should) => {
+        testAudioNodeOptions(should, context, 'GainNode');
+        task.done();
+      });
+
+      audit.define('constructor with options', (task, should) => {
+        let node;
+        let options = {
+          gain: -2,
+        };
+
+        should(
+            () => {
+              node = new GainNode(context, options);
+            },
+            'node1 = new GainNode(c, ' + JSON.stringify(options) + ')')
+            .notThrow();
+        should(node instanceof GainNode, 'node1 instanceof GainNode')
+            .beEqualTo(true);
+
+        should(node.gain.value, 'node1.gain.value').beEqualTo(options.gain);
+
+        should(node.channelCount, 'node1.channelCount').beEqualTo(2);
+        should(node.channelCountMode, 'node1.channelCountMode')
+            .beEqualTo('max');
+        should(node.channelInterpretation, 'node1.channelInterpretation')
+            .beEqualTo('speakers');
+
+        task.done();
+      });
+
+      audit.run();
+    </script>
+  </body>
+</html>