public void Append_CreatesNewPages_WhenCurrentPageIsFull()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
var expected = Enumerable.Range(0, 32).Select(i => i.ToString());
// Act
foreach (var item in expected)
{
buffer.AppendHtml(item);
}
buffer.AppendHtml("Hello");
buffer.AppendHtml("world");
// Assert
Assert.Equal(2, buffer.Pages.Count);
Assert.Collection(buffer.Pages,
page => Assert.Equal(expected, page.Buffer.Select(v => v.Value)),
page =>
{
var array = page.Buffer;
Assert.Equal("Hello", array[0].Value);
Assert.Equal("world", array[1].Value);
});
}
public void Append_CreatesTwoPages()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
var expected = Enumerable.Range(0, 32).Select(i => i.ToString(CultureInfo.InvariantCulture));
// Act
foreach (var item in expected)
{
buffer.AppendHtml(item);
}
buffer.AppendHtml("Hello");
buffer.AppendHtml("world");
// Assert
Assert.Equal(2, buffer.Count);
Assert.Collection(new[] { buffer[0], buffer[1] },
page => Assert.Equal(expected, page.Buffer.Select(v => v.Value)),
page =>
{
var array = page.Buffer;
Assert.Equal("Hello", array[0].Value);
Assert.Equal("world", array[1].Value);
});
}
internal static void AppendPreamble(ViewBuffer viewBuffer, WebAssemblyComponentMarker record)
{
var serializedStartRecord = JsonSerializer.Serialize(
record,
WebAssemblyComponentSerializationSettings.JsonSerializationOptions);
viewBuffer.AppendHtml("<!--Blazor:");
viewBuffer.AppendHtml(serializedStartRecord);
viewBuffer.AppendHtml("-->");
}
internal static void AppendEpilogue(ViewBuffer viewBuffer, WebAssemblyComponentMarker record)
{
var endRecord = JsonSerializer.Serialize(
record.GetEndRecord(),
WebAssemblyComponentSerializationSettings.JsonSerializationOptions);
viewBuffer.AppendHtml("<!--Blazor:");
viewBuffer.AppendHtml(endRecord);
viewBuffer.AppendHtml("-->");
}
public void WriteTo_WritesRazorValues_ToTextWriter()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name");
var writer = new StringWriter();
// Act
buffer.Append("Hello");
buffer.AppendHtml(new HtmlString(" world"));
buffer.AppendHtml(" 123");
buffer.WriteTo(writer, new HtmlTestEncoder());
// Assert
Assert.Equal("Hello world 123", writer.ToString());
}
public void MoveTo_ViewBuffer_TakesPage_IfCurrentPageDoesNotHaveCapacity()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 3; i++)
{
original.AppendHtml($"original-{i}");
}
// With two items, we'd try to copy the items, but there's no room in the current page.
// So we just take over the page.
for (var i = 0; i < 2; i++)
{
other.AppendHtml($"other-{i}");
}
var page = other[0];
// Act
other.MoveTo(original);
// Assert
Assert.Equal(0, other.Count); // Page was taken
Assert.Equal(2, original.Count);
Assert.Same(page, original[1]);
}
public void MoveTo_ViewBuffer_TakesPage_IfCurrentPageInOriginalIsFull()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 4; i++)
{
original.AppendHtml($"original-{i}");
}
other.AppendHtml("Hi");
var page = other[0];
// Act
other.MoveTo(original);
// Assert
Assert.Equal(0, other.Count); // Page was taken
Assert.Equal(2, original.Count);
Assert.Same(page, original[1]);
}
public async Task WriteToAsync_WritesRazorValues_ToTextWriter()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 128);
var writer = new StringWriter();
// Act
buffer.Append("Hello");
buffer.AppendHtml(new HtmlString(" world"));
buffer.AppendHtml(" 123");
await buffer.WriteToAsync(writer, new HtmlTestEncoder());
// Assert
Assert.Equal("HtmlEncode[[Hello]] world 123", writer.ToString());
}
public void MoveTo_ViewBuffer_MultiplePages()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 2; i++)
{
original.AppendHtml($"original-{i}");
}
for (var i = 0; i < 9; i++)
{
other.AppendHtml($"other-{i}");
}
var pages = new List <ViewBufferPage>();
for (var i = 0; i < other.Count; i++)
{
pages.Add(other[i]);
}
// Act
other.MoveTo(original);
// Assert
Assert.Equal(0, other.Count); // Other is cleared
Assert.Equal(4, original.Count);
Assert.Collection(
original[0].Buffer,
item => Assert.Equal("original-0", item.Value),
item => Assert.Equal("original-1", item.Value),
item => Assert.Null(item.Value),
item => Assert.Null(item.Value));
Assert.Collection(
original[1].Buffer,
item => Assert.Equal("other-0", item.Value),
item => Assert.Equal("other-1", item.Value),
item => Assert.Equal("other-2", item.Value),
item => Assert.Equal("other-3", item.Value));
Assert.Collection(
original[2].Buffer,
item => Assert.Equal("other-4", item.Value),
item => Assert.Equal("other-5", item.Value),
item => Assert.Equal("other-6", item.Value),
item => Assert.Equal("other-7", item.Value));
Assert.Collection(
original[3].Buffer,
item => Assert.Equal("other-8", item.Value),
item => Assert.Null(item.Value),
item => Assert.Null(item.Value),
item => Assert.Null(item.Value));
}
public void MoveTo_ViewBuffer_CanAddToTakenPage()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 3; i++)
{
original.AppendHtml($"original-{i}");
}
// More than half full, so we take the page
for (var i = 0; i < 3; i++)
{
other.AppendHtml($"other-{i}");
}
var page = other[0];
other.MoveTo(original);
// Act
original.AppendHtml("after-merge");
// Assert
Assert.Equal(0, other.Count); // Other is cleared
Assert.Equal(2, original.Count);
Assert.Collection(
original[0].Buffer,
item => Assert.Equal("original-0", item.Value),
item => Assert.Equal("original-1", item.Value),
item => Assert.Equal("original-2", item.Value),
item => Assert.Null(item.Value));
Assert.Collection(
original[1].Buffer,
item => Assert.Equal("other-0", item.Value),
item => Assert.Equal("other-1", item.Value),
item => Assert.Equal("other-2", item.Value),
item => Assert.Equal("after-merge", item.Value));
}
[InlineData(65)] // Create many pages before clear
public void Clear_ResetsBackingBufferAndIndex(int valuesToWrite)
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
// Act
for (var i = 0; i < valuesToWrite; i++)
{
buffer.AppendHtml("Hello");
}
buffer.Clear();
buffer.AppendHtml("world");
// Assert
Assert.Equal(1, buffer.Count);
var page = buffer[0];
Assert.Equal(1, page.Count);
Assert.Equal("world", page.Buffer[0].Value);
}
public void AppendHtml_AddsString()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
var value = "Hello world";
// Act
buffer.AppendHtml(value);
// Assert
var page = Assert.Single(buffer.Pages);
Assert.Equal(1, page.Count);
Assert.Equal("Hello world", Assert.IsType<string>(page.Buffer[0].Value));
}
public void AppendHtml_AddsHtmlContentRazorValue()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
var content = new HtmlString("hello-world");
// Act
buffer.AppendHtml(content);
// Assert
var page = Assert.Single(buffer.Pages);
Assert.Equal(1, page.Count);
Assert.Same(content, page.Buffer[0].Value);
}
public void Append_AddsHtmlContentRazorValue()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name");
var content = new HtmlString("hello-world");
// Act
buffer.AppendHtml(content);
// Assert
var segment = Assert.Single(buffer.BufferSegments);
Assert.Equal(1, buffer.CurrentCount);
Assert.Same(content, segment[0].Value);
}
public void AppendHtml_AddsHtmlContentRazorValue()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
var content = new HtmlString("hello-world");
// Act
buffer.AppendHtml(content);
// Assert
Assert.Equal(1, buffer.Count);
var page = buffer[0];
Assert.Equal(1, page.Count);
Assert.Same(content, page.Buffer[0].Value);
}
public void Append_CreatesOnePage()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
var expected = Enumerable.Range(0, 32).Select(i => i.ToString(CultureInfo.InvariantCulture));
// Act
foreach (var item in expected)
{
buffer.AppendHtml(item);
}
// Assert
Assert.Equal(1, buffer.Count);
Assert.Equal(expected, buffer[0].Buffer.Select(v => v.Value));
}
public void AppendHtml_AddsString()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
var value = "Hello world";
// Act
buffer.AppendHtml(value);
// Assert
Assert.Equal(1, buffer.Count);
var page = buffer[0];
Assert.Equal(1, page.Count);
Assert.Equal("Hello world", Assert.IsType <string>(page.Buffer[0].Value));
}
public void AppendHtml_AddsHtmlStringValues()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name");
var value = "Hello world";
// Act
buffer.AppendHtml(value);
// Assert
var segment = Assert.Single(buffer.BufferSegments);
Assert.Equal(1, buffer.CurrentCount);
var htmlString = Assert.IsType <HtmlString>(segment[0].Value);
Assert.Equal("Hello world", htmlString.ToString());
}
public void WriteTo_WritesRazorValuesFromAllBuffers(int valuesToWrite)
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(4), "some-name");
var writer = new StringWriter();
var expected = string.Join("", Enumerable.Range(0, valuesToWrite).Select(_ => "abc"));
// Act
for (var i = 0; i < valuesToWrite; i++)
{
buffer.AppendHtml("abc");
}
buffer.WriteTo(writer, new HtmlTestEncoder());
// Assert
Assert.Equal(expected, writer.ToString());
}
public void MoveTo_ViewBuffer_TakesPage_IfOriginalIsEmpty()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
other.AppendHtml("Hi");
var page = other[0];
// Act
other.MoveTo(original);
// Assert
Assert.Equal(0, other.Count); // Page was taken
Assert.Equal(1, original.Count);
Assert.Same(page, original[0]);
}
public void MoveTo_FlattensAndClears()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 4);
var nestedItems = new List <object>();
var nested = new HtmlContentBuilder(nestedItems);
nested.AppendHtml("Hello");
buffer.AppendHtml(nested);
var destinationItems = new List <object>();
var destination = new HtmlContentBuilder(destinationItems);
// Act
buffer.MoveTo(destination);
// Assert
Assert.Empty(nestedItems);
Assert.Equal(0, buffer.Count);
Assert.Equal("Hello", Assert.IsType <HtmlString>(destinationItems[0]).Value);
}
public void MoveTo_ViewBuffer_CopiesItems_IfCurrentPageHasRoom()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 2; i++)
{
original.AppendHtml($"original-{i}");
}
// With two items, this is half full so we try to copy the items.
for (var i = 0; i < 2; i++)
{
other.AppendHtml($"other-{i}");
}
var page = other[0];
// Act
other.MoveTo(original);
// Assert
Assert.Equal(0, other.Count); // Other is cleared
Assert.Contains(page.Buffer, scope.ReturnedBuffers); // Buffer was returned
Assert.Equal(1, original.Count);
Assert.Collection(
original[0].Buffer,
item => Assert.Equal("original-0", item.Value),
item => Assert.Equal("original-1", item.Value),
item => Assert.Equal("other-0", item.Value),
item => Assert.Equal("other-1", item.Value));
}
public async Task WriteToAsync_WritesRazorValuesFromAllBuffers(int valuesToWrite)
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 4);
var writer = new StringWriter();
var expected = string.Join("", Enumerable.Range(0, valuesToWrite).Select(_ => "abc"));
// Act
for (var i = 0; i < valuesToWrite; i++)
{
buffer.AppendHtml("abc");
}
await buffer.WriteToAsync(writer, new HtmlTestEncoder());
// Assert
Assert.Equal(expected, writer.ToString());
}
public void Clear_ResetsBackingBufferAndIndex(int valuesToWrite)
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 32);
// Act
for (var i = 0; i < valuesToWrite; i++)
{
buffer.AppendHtml("Hello");
}
buffer.Clear();
buffer.AppendHtml("world");
// Assert
var page = Assert.Single(buffer.Pages);
Assert.Equal(1, page.Count);
Assert.Equal("world", page.Buffer[0].Value);
}
public async Task WriteToAsync_WritesRazorValues_ToTextWriter()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 128);
var writer = new StringWriter();
// Act
buffer.Append("Hello");
buffer.AppendHtml(new HtmlString(" world"));
buffer.AppendHtml(" 123");
await buffer.WriteToAsync(writer, new HtmlTestEncoder());
// Assert
Assert.Equal("HtmlEncode[[Hello]] world 123", writer.ToString());
}
public void MoveTo_ViewBuffer_CanAddToTakenPage()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 3; i++)
{
original.AppendHtml($"original-{i}");
}
// More than half full, so we take the page
for (var i = 0; i < 3; i++)
{
other.AppendHtml($"other-{i}");
}
var page = other.Pages[0];
other.MoveTo(original);
// Act
original.AppendHtml("after-merge");
// Assert
Assert.Empty(other.Pages); // Other is cleared
Assert.Equal(2, original.Pages.Count);
Assert.Collection(
original.Pages[0].Buffer,
item => Assert.Equal("original-0", item.Value),
item => Assert.Equal("original-1", item.Value),
item => Assert.Equal("original-2", item.Value),
item => Assert.Null(item.Value));
Assert.Collection(
original.Pages[1].Buffer,
item => Assert.Equal("other-0", item.Value),
item => Assert.Equal("other-1", item.Value),
item => Assert.Equal("other-2", item.Value),
item => Assert.Equal("after-merge", item.Value));
}
public void MoveTo_ViewBuffer_MultiplePages()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 2; i++)
{
original.AppendHtml($"original-{i}");
}
for (var i = 0; i < 9; i++)
{
other.AppendHtml($"other-{i}");
}
var pages = new List<ViewBufferPage>(other.Pages);
// Act
other.MoveTo(original);
// Assert
Assert.Empty(other.Pages); // Other is cleared
Assert.Equal(4, original.Pages.Count);
Assert.Collection(
original.Pages[0].Buffer,
item => Assert.Equal("original-0", item.Value),
item => Assert.Equal("original-1", item.Value),
item => Assert.Null(item.Value),
item => Assert.Null(item.Value));
Assert.Collection(
original.Pages[1].Buffer,
item => Assert.Equal("other-0", item.Value),
item => Assert.Equal("other-1", item.Value),
item => Assert.Equal("other-2", item.Value),
item => Assert.Equal("other-3", item.Value));
Assert.Collection(
original.Pages[2].Buffer,
item => Assert.Equal("other-4", item.Value),
item => Assert.Equal("other-5", item.Value),
item => Assert.Equal("other-6", item.Value),
item => Assert.Equal("other-7", item.Value));
Assert.Collection(
original.Pages[3].Buffer,
item => Assert.Equal("other-8", item.Value),
item => Assert.Null(item.Value),
item => Assert.Null(item.Value),
item => Assert.Null(item.Value));
}
public void MoveTo_FlattensAndClears()
{
// Arrange
var buffer = new ViewBuffer(new TestViewBufferScope(), "some-name", pageSize: 4);
var nestedItems = new List<object>();
var nested = new HtmlContentBuilder(nestedItems);
nested.AppendHtml("Hello");
buffer.AppendHtml(nested);
var destinationItems = new List<object>();
var destination = new HtmlContentBuilder(destinationItems);
// Act
buffer.MoveTo(destination);
// Assert
Assert.Empty(nestedItems);
Assert.Empty(buffer.Pages);
Assert.Equal("Hello", Assert.IsType<HtmlString>(destinationItems[0]).Value);
}
public void MoveTo_ViewBuffer_CopiesItems_IfCurrentPageHasRoom()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 2; i++)
{
original.AppendHtml($"original-{i}");
}
// With two items, this is half full so we try to copy the items.
for (var i = 0; i < 2; i++)
{
other.AppendHtml($"other-{i}");
}
var page = other.Pages[0];
// Act
other.MoveTo(original);
// Assert
Assert.Empty(other.Pages); // Other is cleared
Assert.Contains(page.Buffer, scope.ReturnedBuffers); // Buffer was returned
Assert.Collection(
Assert.Single(original.Pages).Buffer,
item => Assert.Equal("original-0", item.Value),
item => Assert.Equal("original-1", item.Value),
item => Assert.Equal("other-0", item.Value),
item => Assert.Equal("other-1", item.Value));
}
public void MoveTo_ViewBuffer_TakesPage_IfCurrentPageDoesNotHaveCapacity()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 3; i++)
{
original.AppendHtml($"original-{i}");
}
// With two items, we'd try to copy the items, but there's no room in the current page.
// So we just take over the page.
for (var i = 0; i < 2; i++)
{
other.AppendHtml($"other-{i}");
}
var page = other.Pages[0];
// Act
other.MoveTo(original);
// Assert
Assert.Empty(other.Pages); // Page was taken
Assert.Equal(2, original.Pages.Count);
Assert.Same(page, original.Pages[1]);
}
public void MoveTo_ViewBuffer_TakesPage_IfCurrentPageInOriginalIsFull()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
for (var i = 0; i < 4; i++)
{
original.AppendHtml($"original-{i}");
}
other.AppendHtml("Hi");
var page = other.Pages[0];
// Act
other.MoveTo(original);
// Assert
Assert.Empty(other.Pages); // Page was taken
Assert.Equal(2, original.Pages.Count);
Assert.Same(page, original.Pages[1]);
}
public void MoveTo_ViewBuffer_TakesPage_IfOriginalIsEmpty()
{
// Arrange
var scope = new TestViewBufferScope();
var original = new ViewBuffer(scope, "original", pageSize: 4);
var other = new ViewBuffer(scope, "other", pageSize: 4);
other.AppendHtml("Hi");
var page = other.Pages[0];
// Act
other.MoveTo(original);
// Assert
Assert.Empty(other.Pages); // Page was taken
Assert.Same(page, Assert.Single(original.Pages));
}