Added tests for ChannelMergerNode.

Author: KristofferStrube

src/KristofferStrube.Blazor.WebAudio/Options/ChannelMergerOptions.cs

@@ -14,6 +14,7 @@ public class ChannelMergerOptions : AudioNodeOptions
     /// The number inputs for the <see cref="ChannelMergerNode"/>.
     /// </summary>
     /// <remarks>
+    /// The default value is <c>6</c>.<br />
     /// It throws an <see cref="IndexSizeErrorException"/> if it is less than <c>1</c> or larger than the supported number of channels when used for constructing a <see cref="ChannelMergerNode"/>.
     /// </remarks>
     [JsonPropertyName("numberOfInputs")]

tests/IntegrationTests/AudioNodeTests/ChannelMergerNodeTest.cs

@@ -1,4 +1,5 @@
-using KristofferStrube.Blazor.WebIDL.Exceptions;
+using FluentAssertions;
+using KristofferStrube.Blazor.WebIDL.Exceptions;
 using Microsoft.JSInterop;
 
 namespace IntegrationTests.AudioNodeTests;
@@ -13,4 +14,30 @@ public override async Task<ChannelMergerNode> CreateAsync(IJSRuntime jSRuntime,
         [ChannelCountMode.Max] = typeof(InvalidStateErrorException),
         [ChannelCountMode.ClampedMax] = typeof(InvalidStateErrorException),
     };
+
+    [Test]
+    public async Task CreateAsync_WithNoOptions_DefaultsTo6Inputs()
+    {
+        // Arrange
+        await using ChannelMergerNode node = await ChannelMergerNode.CreateAsync(JSRuntime, AudioContext);
+
+        // Act
+        ulong numberOfInputs = await node.GetNumberOfInputsAsync();
+
+        // Assert
+        _ = numberOfInputs.Should().Be(6);
+    }
+
+    [Test]
+    public async Task CreateAsync_WithEmptyOptions_DefaultsTo6Inputs()
+    {
+        // Arrange
+        await using ChannelMergerNode node = await ChannelMergerNode.CreateAsync(JSRuntime, AudioContext, new());
+
+        // Act
+        ulong numberOfInputs = await node.GetNumberOfInputsAsync();
+
+        // Assert
+        _ = numberOfInputs.Should().Be(6);
+    }
 }