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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Text.Json;
using Microsoft.JSInterop.Implementation;
namespace Microsoft.JSInterop.Infrastructure;
public class JSStreamReferenceJsonConverterTest
{
private readonly JSRuntime JSRuntime = new TestJSRuntime();
private readonly JsonSerializerOptions JsonSerializerOptions;
public JSStreamReferenceJsonConverterTest()
{
JsonSerializerOptions = JSRuntime.JsonSerializerOptions;
JsonSerializerOptions.Converters.Add(new JSStreamReferenceJsonConverter(JSRuntime));
}
[Fact]
public void Read_Throws_IfJsonIsMissingJSObjectIdProperty()
{
// Arrange
var json = "{}";
// Act & Assert
var ex = Assert.Throws<JsonException>(() => JsonSerializer.Deserialize<IJSStreamReference>(json, JsonSerializerOptions));
Assert.Equal("Required property __jsObjectId not found.", ex.Message);
}
[Fact]
public void Read_Throws_IfJsonContainsUnknownContent()
{
// Arrange
var json = "{\"foo\":2}";
// Act & Assert
var ex = Assert.Throws<JsonException>(() => JsonSerializer.Deserialize<IJSStreamReference>(json, JsonSerializerOptions));
Assert.Equal("Unexpected JSON property foo.", ex.Message);
}
[Fact]
public void Read_Throws_IfJsonIsIncomplete()
{
// Arrange
var json = $"{{\"__jsObjectId\":5";
// Act & Assert
var ex = Record.Exception(() => JsonSerializer.Deserialize<IJSStreamReference>(json, JsonSerializerOptions));
Assert.IsAssignableFrom<JsonException>(ex);
}
[Fact]
public void Read_Throws_IfJSObjectIdAppearsMultipleTimes()
{
// Arrange
var json = $"{{\"__jsObjectId\":3,\"__jsObjectId\":7}}";
// Act & Assert
var ex = Record.Exception(() => JsonSerializer.Deserialize<IJSStreamReference>(json, JsonSerializerOptions));
Assert.IsAssignableFrom<JsonException>(ex);
}
[Fact]
public void Read_Throws_IfLengthNotProvided()
{
// Arrange
var expectedId = 3;
var json = $"{{\"__jsObjectId\":{expectedId}}}";
// Act & Assert
var ex = Assert.Throws<JsonException>(() => JsonSerializer.Deserialize<IJSStreamReference>(json, JsonSerializerOptions));
Assert.Equal("Required property __jsStreamReferenceLength not found.", ex.Message);
}
[Fact]
public void Read_ReadsJson_IJSStreamReference()
{
// Arrange
var expectedId = 3;
var expectedLength = 5;
var json = $"{{\"__jsObjectId\":{expectedId}, \"__jsStreamReferenceLength\":{expectedLength}}}";
// Act
var deserialized = (JSStreamReference)JsonSerializer.Deserialize<IJSStreamReference>(json, JsonSerializerOptions)!;
// Assert
Assert.Equal(expectedId, deserialized?.Id);
Assert.Equal(expectedLength, deserialized?.Length);
}
[Fact]
public void Read_ReadsJson_IJSStreamReferenceReverseOrder()
{
// Arrange
var expectedId = 3;
var expectedLength = 5;
var json = $"{{\"__jsStreamReferenceLength\":{expectedLength}, \"__jsObjectId\":{expectedId}}}";
// Act
var deserialized = (JSStreamReference)JsonSerializer.Deserialize<IJSStreamReference>(json, JsonSerializerOptions)!;
// Assert
Assert.Equal(expectedId, deserialized?.Id);
Assert.Equal(expectedLength, deserialized?.Length);
}
[Fact]
public void Write_WritesValidJson()
{
// Arrange
var jsObjectRef = new JSStreamReference(JSRuntime, 7, 10);
// Act
var json = JsonSerializer.Serialize((IJSStreamReference)jsObjectRef, JsonSerializerOptions);
// Assert
Assert.Equal($"{{\"__jsObjectId\":{jsObjectRef.Id}}}", json);
}
}
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