public async Task ProcessAsync_WithoutSpecifyingRenderMode_ThrowsError()
{
// Arrange
var tagHelper = new ComponentTagHelper
{
ViewContext = GetViewContext(),
};
var context = GetTagHelperContext();
var output = GetTagHelperOutput();
// Act & Assert
var ex = await Assert.ThrowsAsync <InvalidOperationException>(() => tagHelper.ProcessAsync(context, output));
Assert.Equal("A value for the 'render-mode' attribute must be supplied to the 'component' tag helper.", ex.Message);
}
public async Task ProcessAsync_WithoutSpecifyingRenderMode_ThrowsError()
{
// Arrange
var tagHelper = new ComponentTagHelper
{
ViewContext = GetViewContext(),
};
var context = GetTagHelperContext();
var output = GetTagHelperOutput();
// Act & Assert
await ExceptionAssert.ThrowsArgumentAsync(
() => tagHelper.ProcessAsync(context, output),
nameof(RenderMode),
"A value for the 'render-mode' attribute must be supplied to the 'component' tag helper.");
}
public async Task ProcessAsync_RendersComponent()
{
// Arrange
var tagHelper = new ComponentTagHelper
{
ViewContext = GetViewContext(),
};
var context = GetTagHelperContext();
var output = GetTagHelperOutput();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
var content = HtmlContentUtilities.HtmlContentToString(output.Content);
Assert.Equal("Hello world", content);
Assert.Null(output.TagName);
}
