348 lines
17 KiB
C#
348 lines
17 KiB
C#
// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
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using System.Web.Razor.Generator;
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using System.Web.Razor.Parser;
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using System.Web.Razor.Parser.SyntaxTree;
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using System.Web.Razor.Resources;
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using System.Web.Razor.Test.Framework;
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using System.Web.Razor.Text;
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using Xunit;
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namespace System.Web.Razor.Test.Parser.CSharp
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{
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public class CSharpHelperTest : CsHtmlMarkupParserTestBase
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{
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[Fact]
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public void ParseHelperCorrectlyParsesHelperWithNoSpaceInBody()
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{
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ParseDocumentTest("@helper Foo(){@Bar()}",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(){", 8, 0, 8), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code("Foo(){").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.EmptyCSharp().AsStatement(),
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new ExpressionBlock(
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Factory.CodeTransition(),
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Factory.Code("Bar()")
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.AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: true)
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.Accepts(AcceptedCharacters.NonWhiteSpace)),
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Factory.EmptyCSharp().AsStatement()),
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Factory.Code("}").Hidden().Accepts(AcceptedCharacters.None)),
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Factory.EmptyHtml()));
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}
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[Fact]
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public void ParseHelperCorrectlyParsesIncompleteHelperPreceedingCodeBlock()
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{
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ParseDocumentTest(@"@helper
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@{}",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(
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Factory.CodeTransition(),
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Factory.MetaCode("helper")),
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Factory.Markup("\r\n"),
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new StatementBlock(
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Factory.CodeTransition(),
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Factory.MetaCode("{").Accepts(AcceptedCharacters.None),
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Factory.EmptyCSharp().AsStatement(),
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Factory.MetaCode("}").Accepts(AcceptedCharacters.None)),
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Factory.EmptyHtml()),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Unexpected_Character_At_Helper_Name_Start,
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RazorResources.ErrorComponent_Newline),
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7, 0, 7));
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}
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[Fact]
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public void ParseHelperRequiresSpaceBeforeSignature()
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{
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ParseDocumentTest("@helper{",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(
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Factory.CodeTransition(),
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Factory.MetaCode("helper")),
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Factory.Markup("{")),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Unexpected_Character_At_Helper_Name_Start,
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String.Format(RazorResources.ErrorComponent_Character, "{")),
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7, 0, 7));
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}
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[Fact]
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public void ParseHelperOutputsErrorButContinuesIfLParenFoundAfterHelperKeyword()
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{
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ParseDocumentTest("@helper () {",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("() {", 8, 0, 8), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code("() {").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.EmptyCSharp()
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.AsStatement()
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.AutoCompleteWith("}")))),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Unexpected_Character_At_Helper_Name_Start,
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String.Format(RazorResources.ErrorComponent_Character, "(")),
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8, 0, 8),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Expected_EndOfBlock_Before_EOF,
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"helper", "}", "{"),
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1, 0, 1));
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}
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[Fact]
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public void ParseHelperStatementOutputsMarkerHelperHeaderSpanOnceKeywordComplete()
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{
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ParseDocumentTest("@helper ",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>(String.Empty, 8, 0, 8), headerComplete: false),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.EmptyCSharp().Hidden())),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Unexpected_Character_At_Helper_Name_Start,
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RazorResources.ErrorComponent_EndOfFile),
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8, 0, 8));
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}
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[Fact]
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public void ParseHelperStatementMarksHelperSpanAsCanGrowIfMissingTrailingSpace()
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{
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ParseDocumentTest("@helper",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(
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Factory.CodeTransition(),
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Factory.MetaCode("helper").Accepts(AcceptedCharacters.Any))),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Unexpected_Character_At_Helper_Name_Start,
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RazorResources.ErrorComponent_EndOfFile),
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7, 0, 7));
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}
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[Fact]
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public void ParseHelperStatementCapturesWhitespaceToEndOfLineIfHelperStatementMissingName()
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{
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ParseDocumentTest(@"@helper
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",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>(" ", 8, 0, 8), headerComplete: false),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code(" \r\n").Hidden()),
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Factory.Markup(@" ")),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Unexpected_Character_At_Helper_Name_Start,
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RazorResources.ErrorComponent_Newline),
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30, 0, 30));
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}
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[Fact]
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public void ParseHelperStatementCapturesWhitespaceToEndOfLineIfHelperStatementMissingOpenParen()
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{
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ParseDocumentTest(@"@helper Foo
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",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo ", 8, 0, 8), headerComplete: false),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code("Foo \r\n").Hidden()),
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Factory.Markup(" ")),
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new RazorError(
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String.Format(RazorResources.ParseError_MissingCharAfterHelperName, "("),
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15, 0, 15));
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}
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[Fact]
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public void ParseHelperStatementCapturesAllContentToEndOfFileIfHelperStatementMissingCloseParenInParameterList()
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{
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ParseDocumentTest(@"@helper Foo(Foo Bar
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Biz
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Boz",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(Foo Bar\r\nBiz\r\nBoz", 8, 0, 8), headerComplete: false),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code("Foo(Foo Bar\r\nBiz\r\nBoz").Hidden())),
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new RazorError(
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RazorResources.ParseError_UnterminatedHelperParameterList,
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11, 0, 11));
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}
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[Fact]
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public void ParseHelperStatementCapturesWhitespaceToEndOfLineIfHelperStatementMissingOpenBraceAfterParameterList()
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{
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ParseDocumentTest(@"@helper Foo(string foo)
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",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(string foo) ", 8, 0, 8), headerComplete: false),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code("Foo(string foo) \r\n").Hidden())),
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new RazorError(
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String.Format(RazorResources.ParseError_MissingCharAfterHelperParameters, "{"),
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29, 1, 0));
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}
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[Fact]
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public void ParseHelperStatementContinuesParsingHelperUntilEOF()
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{
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ParseDocumentTest(@"@helper Foo(string foo) {
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<p>Foo</p>",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(string foo) {", 8, 0, 8), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code(@"Foo(string foo) {").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.Code(" \r\n")
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.AsStatement()
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.AutoCompleteWith("}"),
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new MarkupBlock(
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Factory.Markup(" <p>Foo</p>").Accepts(AcceptedCharacters.None)),
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Factory.EmptyCSharp().AsStatement()))),
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new RazorError(
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String.Format(
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RazorResources.ParseError_Expected_EndOfBlock_Before_EOF,
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"helper", "}", "{"),
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1, 0, 1));
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}
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[Fact]
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public void ParseHelperStatementCorrectlyParsesHelperWithEmbeddedCode()
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{
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ParseDocumentTest(@"@helper Foo(string foo) {
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<p>@foo</p>
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}",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(string foo) {", 8, 0, 8), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code(@"Foo(string foo) {").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.Code(" \r\n").AsStatement(),
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new MarkupBlock(
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Factory.Markup(" <p>"),
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new ExpressionBlock(
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Factory.CodeTransition(),
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Factory.Code("foo")
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.AsImplicitExpression(CSharpCodeParser.DefaultKeywords)
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.Accepts(AcceptedCharacters.NonWhiteSpace)),
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Factory.Markup("</p>\r\n").Accepts(AcceptedCharacters.None)),
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Factory.EmptyCSharp().AsStatement()),
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Factory.Code("}").Hidden().Accepts(AcceptedCharacters.None)),
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Factory.EmptyHtml()));
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}
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[Fact]
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public void ParseHelperStatementCorrectlyParsesHelperWithNewlinesBetweenCloseParenAndOpenBrace()
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{
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ParseDocumentTest(@"@helper Foo(string foo)
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{
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<p>@foo</p>
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}",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(string foo)\r\n\r\n\r\n\r\n{", 8, 0, 8), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code("Foo(string foo)\r\n\r\n\r\n\r\n{").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.Code(" \r\n").AsStatement(),
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new MarkupBlock(
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Factory.Markup(@" <p>"),
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new ExpressionBlock(
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Factory.CodeTransition(),
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Factory.Code("foo")
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.AsImplicitExpression(CSharpCodeParser.DefaultKeywords)
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.Accepts(AcceptedCharacters.NonWhiteSpace)),
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Factory.Markup("</p>\r\n").Accepts(AcceptedCharacters.None)),
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Factory.EmptyCSharp().AsStatement()),
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Factory.Code("}").Hidden().Accepts(AcceptedCharacters.None)),
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Factory.EmptyHtml()));
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}
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[Fact]
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public void ParseHelperStatementGivesWhitespaceAfterOpenBraceToMarkupInDesignMode()
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{
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ParseDocumentTest(@"@helper Foo(string foo) {
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",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(string foo) {", 8, 0, 8), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code(@"Foo(string foo) {").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.Code(" \r\n ")
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.AsStatement()
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.AutoCompleteWith("}")))),
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designTimeParser: true,
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expectedErrors: new[]
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{
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new RazorError(
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String.Format(
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RazorResources.ParseError_Expected_EndOfBlock_Before_EOF,
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"helper", "}", "{"),
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new SourceLocation(1, 0, 1))
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});
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}
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[Fact]
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public void ParseHelperAcceptsNestedHelpersButOutputsError()
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{
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ParseDocumentTest(@"@helper Foo(string foo) {
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@helper Bar(string baz) {
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}
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}",
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new MarkupBlock(
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Factory.EmptyHtml(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Foo(string foo) {", 8, 0, 8), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code(@"Foo(string foo) {").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.Code("\r\n ").AsStatement(),
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new HelperBlock(new HelperCodeGenerator(new LocationTagged<string>("Bar(string baz) {", 39, 1, 12), headerComplete: true),
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Factory.CodeTransition(),
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Factory.MetaCode("helper ").Accepts(AcceptedCharacters.None),
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Factory.Code(@"Bar(string baz) {").Hidden().Accepts(AcceptedCharacters.None),
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new StatementBlock(
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Factory.Code("\r\n ").AsStatement()),
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Factory.Code("}").Hidden().Accepts(AcceptedCharacters.None)),
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Factory.Code("\r\n").AsStatement()),
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Factory.Code("}").Hidden().Accepts(AcceptedCharacters.None)),
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Factory.EmptyHtml()),
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designTimeParser: true,
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expectedErrors: new[]
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{
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new RazorError(RazorResources.ParseError_Helpers_Cannot_Be_Nested, 38, 1, 11)
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});
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}
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}
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}
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