public void SyntaxTreeShould_ConvertTo_WhenAnyLanguageAndTwoTextNode_JoinText(string typeName) { var textNode = new TextNode(value); var syntaxTree = new SyntaxTree(new List <SyntaxNode>() { textNode, textNode }); var language = LanguageRegistry.BuildLanguage(typeName); var result = syntaxTree.BuildLinesWithTag(language.Tags); result.Should().Be(value + value); }