LibWeb: Flesh out AudioBufferSourceNode buffer setter steps

Author: https://github.com/tcl3 Commit: 72ca91ad1a Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3099
2025-09-10 19:46:03 +00:00 · 2025-01-02 01:09:07 +00:00 · 2025-01-02 01:09:07 +00:00 · 72ca91ad1a · 2025-01-03 10:15:43 +00:00
commit 72ca91ad1a
parent 6cab972248
4 changed files with 142 additions and 1 deletions
--- a/Tests/LibWeb/Text/input/wpt-import/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-channels.html
+++ b/Tests/LibWeb/Text/input/wpt-import/webaudio/the-audio-api/the-audiobuffersourcenode-interface/audiobuffersource-channels.html
@ -0,0 +1,97 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>
+      audiobuffersource-channels.html
+    </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>
+  </head>
+  <body>
+    <script id="layout-test-code">
+      let audit = Audit.createTaskRunner();
+      let context;
+      let source;
+
+      audit.define(
+          {
+            label: 'validate .buffer',
+            description:
+                'Validatation of AudioBuffer in .buffer attribute setter'
+          },
+          function(task, should) {
+            context = new AudioContext();
+            source = context.createBufferSource();
+
+            // Make sure we can't set to something which isn't an AudioBuffer.
+            should(function() {
+              source.buffer = 57;
+            }, 'source.buffer = 57').throw(TypeError);
+
+            // It's ok to set the buffer to null.
+            should(function() {
+              source.buffer = null;
+            }, 'source.buffer = null').notThrow();
+
+            // Set the buffer to a valid AudioBuffer
+            let buffer =
+                new AudioBuffer({length: 128, sampleRate: context.sampleRate});
+
+            should(function() {
+              source.buffer = buffer;
+            }, 'source.buffer = buffer').notThrow();
+
+            // The buffer has been set; we can't set it again.
+            should(function() {
+              source.buffer =
+                  new AudioBuffer({length: 128, sampleRate: context.sampleRate})
+            }, 'source.buffer = new buffer').throw(DOMException, 'InvalidStateError');
+
+            // The buffer has been set; it's ok to set it to null.
+            should(function() {
+              source.buffer = null;
+            }, 'source.buffer = null again').notThrow();
+
+            // The buffer was already set (and set to null).  Can't set it
+            // again.
+            should(function() {
+              source.buffer = buffer;
+            }, 'source.buffer = buffer again').throw(DOMException, 'InvalidStateError');
+
+            // But setting to null is ok.
+            should(function() {
+            }, 'source.buffer = null after setting to null').notThrow();
+
+            // Check that mono buffer can be set.
+            should(function() {
+              let monoBuffer =
+                  context.createBuffer(1, 1024, context.sampleRate);
+              let testSource = context.createBufferSource();
+              testSource.buffer = monoBuffer;
+            }, 'Setting source with mono buffer').notThrow();
+
+            // Check that stereo buffer can be set.
+            should(function() {
+              let stereoBuffer =
+                  context.createBuffer(2, 1024, context.sampleRate);
+              let testSource = context.createBufferSource();
+              testSource.buffer = stereoBuffer;
+            }, 'Setting source with stereo buffer').notThrow();
+
+            // Check buffers with more than two channels.
+            for (let i = 3; i < 10; ++i) {
+              should(function() {
+                let buffer = context.createBuffer(i, 1024, context.sampleRate);
+                let testSource = context.createBufferSource();
+                testSource.buffer = buffer;
+              }, 'Setting source with ' + i + ' channels buffer').notThrow();
+            }
+            task.done();
+          });
+
+      audit.run();
+    </script>
+  </body>
+</html>