public async Task ExecuteAsync_DoesNotPersistDataWhenNoPrerenderHappened()
{
// Arrange
var tagHelper = new PersistComponentStateTagHelper
{
ViewContext = GetViewContext()
};
var context = GetTagHelperContext();
var output = GetTagHelperOutput();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
var content = HtmlContentUtilities.HtmlContentToString(output.Content);
Assert.Empty(content);
Assert.Null(output.TagName);
}
public async Task ExecuteAsync_RendersServerStateExplicitly()
{
// Arrange
var tagHelper = new PersistComponentStateTagHelper
{
ViewContext = GetViewContext(),
PersistenceMode = PersistenceMode.Server
};
var context = GetTagHelperContext();
var output = GetTagHelperOutput();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
var content = HtmlContentUtilities.HtmlContentToString(output.Content);
Assert.NotEmpty(content);
var payload = content["<!--Blazor-Component-State:".Length..^ "-->".Length];
public async Task ExecuteAsync_RendersWebAssemblyStateExplicitly()
{
// Arrange
var tagHelper = new PersistComponentStateTagHelper
{
ViewContext = GetViewContext(),
PersistenceMode = PersistenceMode.WebAssembly
};
var context = GetTagHelperContext();
var output = GetTagHelperOutput();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
var content = HtmlContentUtilities.HtmlContentToString(output.Content);
Assert.Equal("<!--Blazor-Component-State:e30=-->", content);
Assert.Null(output.TagName);
}
public async Task ExecuteAsync_RendersWebAssemblyStateImplicitlyWhenAWebAssemblyComponentWasPrerendered()
{
// Arrange
var tagHelper = new PersistComponentStateTagHelper
{
ViewContext = GetViewContext()
};
ComponentRenderer.UpdateSaveStateRenderMode(tagHelper.ViewContext, RenderMode.WebAssemblyPrerendered);
var context = GetTagHelperContext();
var output = GetTagHelperOutput();
// Act
await tagHelper.ProcessAsync(context, output);
// Assert
var content = HtmlContentUtilities.HtmlContentToString(output.Content);
Assert.Equal("<!--Blazor-Component-State:e30=-->", content);
Assert.Null(output.TagName);
}
