public void TreesAreDifferentReturnsTrueIfTreeStructureIsDifferent()
{
var factory = SpanFactory.CreateCsHtml();
var original = new MarkupBlock(
factory.Markup("<p>"),
new ExpressionBlock(
factory.CodeTransition()),
factory.Markup("</p>"));
var modified = new MarkupBlock(
factory.Markup("<p>"),
new ExpressionBlock(
factory.CodeTransition("@"),
factory.Code("f")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
factory.Markup("</p>"));
var oldBuffer = new StringTextBuffer("<p>@</p>");
var newBuffer = new StringTextBuffer("<p>@f</p>");
Assert.True(BackgroundParser.TreesAreDifferent(
original,
modified,
new[]
{
new TextChange(position: 4, oldLength: 0, oldBuffer: oldBuffer, newLength: 1, newBuffer: newBuffer)
}));
}
public void TreesAreDifferentReturnsFalseIfTreeStructureIsSame()
{
var factory = SpanFactory.CreateCsHtml();
Block original = new MarkupBlock(
factory.Markup("<p>"),
new ExpressionBlock(
factory.CodeTransition(),
factory.Code("f")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
factory.Markup("</p>"));
factory.Reset();
Block modified = new MarkupBlock(
factory.Markup("<p>"),
new ExpressionBlock(
factory.CodeTransition(),
factory.Code("foo")
.AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
factory.Markup("</p>"));
original.LinkNodes();
modified.LinkNodes();
ITextBuffer oldBuffer = new StringTextBuffer("<p>@f</p>");
ITextBuffer newBuffer = new StringTextBuffer("<p>@foo</p>");
Assert.False(BackgroundParser.TreesAreDifferent(
original, modified, new[] {
new TextChange(position: 5, oldLength: 0, oldBuffer: oldBuffer, newLength: 2, newBuffer: newBuffer)
}));
}
public void TreesAreDifferentReturnsFalseForAddedContent(string content)
{
// Arrange
var factory = SpanFactory.CreateCsHtml();
var blockFactory = new BlockFactory(factory);
var original = new MarkupBlock(
blockFactory.MarkupTagBlock("<p>"),
blockFactory.TagHelperBlock(
tagName: "div",
tagMode: TagMode.StartTagAndEndTag,
start: new SourceLocation(3, 0, 3),
startTag: blockFactory.MarkupTagBlock("<div>"),
children: new SyntaxTreeNode[]
{
factory.Markup($"{Environment.NewLine}{Environment.NewLine}")
},
endTag: blockFactory.MarkupTagBlock("</div>")),
blockFactory.MarkupTagBlock("</p>"));
factory.Reset();
var modified = new MarkupBlock(
blockFactory.MarkupTagBlock("<p>"),
blockFactory.TagHelperBlock(
tagName: "div",
tagMode: TagMode.StartTagAndEndTag,
start: new SourceLocation(3, 0, 3),
startTag: blockFactory.MarkupTagBlock("<div>"),
children: new SyntaxTreeNode[]
{
factory.Markup($"{Environment.NewLine}{content}{Environment.NewLine}")
},
endTag: blockFactory.MarkupTagBlock("</div>")),
blockFactory.MarkupTagBlock("</p>"));
original.LinkNodes();
modified.LinkNodes();
var oldBuffer = new StringTextBuffer($"<p><div>{Environment.NewLine}{Environment.NewLine}</div></p>");
var newBuffer = new StringTextBuffer(
$"<p><div>{Environment.NewLine}{content}{Environment.NewLine}</div></p>");
// Act
var treesAreDifferent = BackgroundParser.TreesAreDifferent(
original,
modified,
new[]
{
new TextChange(
position: 8 + Environment.NewLine.Length,
oldLength: 0,
oldBuffer: oldBuffer,
newLength: content.Length,
newBuffer: newBuffer)
});
// Assert
Assert.False(treesAreDifferent);
}
