// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information. using System.Web.Razor.Parser; using System.Web.Razor.Parser.SyntaxTree; using System.Web.Razor.Resources; using System.Web.Razor.Test.Framework; using System.Web.Razor.Text; using Xunit; namespace System.Web.Razor.Test.Parser.CSharp { public class CSharpErrorTest : CsHtmlCodeParserTestBase { [Fact] public void ParseBlockHandlesQuotesAfterTransition() { ParseBlockTest("@\"", new ExpressionBlock( Factory.CodeTransition(), Factory.EmptyCSharp() .AsImplicitExpression(KeywordSet) .Accepts(AcceptedCharacters.NonWhiteSpace) ), new RazorError( String.Format(RazorResources.ParseError_Unexpected_Character_At_Start_Of_CodeBlock_CS, '"'), 1, 0, 1)); } [Fact] public void ParseBlockCapturesWhitespaceToEndOfLineInInvalidUsingStatementAndTreatsAsFileCode() { ParseBlockTest(@"using ", new StatementBlock( Factory.Code("using \r\n").AsStatement() )); } [Fact] public void ParseBlockMethodOutputsOpenCurlyAsCodeSpanIfEofFoundAfterOpenCurlyBrace() { ParseBlockTest("{", new StatementBlock( Factory.MetaCode("{").Accepts(AcceptedCharacters.None), Factory.EmptyCSharp() .AsStatement() .With(new AutoCompleteEditHandler(CSharpLanguageCharacteristics.Instance.TokenizeString) { AutoCompleteString = "}" }) ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, RazorResources.BlockName_Code, "}", "{"), SourceLocation.Zero)); } [Fact] public void ParseBlockMethodOutputsZeroLengthCodeSpanIfStatementBlockEmpty() { ParseBlockTest("{}", new StatementBlock( Factory.MetaCode("{").Accepts(AcceptedCharacters.None), Factory.EmptyCSharp().AsStatement(), Factory.MetaCode("}").Accepts(AcceptedCharacters.None) )); } [Fact] public void ParseBlockMethodProducesErrorIfNewlineFollowsTransition() { ParseBlockTest(@"@ ", new ExpressionBlock( Factory.CodeTransition(), Factory.EmptyCSharp() .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) .Accepts(AcceptedCharacters.NonWhiteSpace)), new RazorError(RazorResources.ParseError_Unexpected_WhiteSpace_At_Start_Of_CodeBlock_CS, new SourceLocation(1, 0, 1))); } [Fact] public void ParseBlockMethodProducesErrorIfWhitespaceBetweenTransitionAndBlockStartInEmbeddedExpression() { ParseBlockTest(@"{ @ {} }", new StatementBlock( Factory.MetaCode("{").Accepts(AcceptedCharacters.None), Factory.Code("\r\n ").AsStatement(), new ExpressionBlock( Factory.CodeTransition(), Factory.EmptyCSharp() .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: true) .Accepts(AcceptedCharacters.NonWhiteSpace)), Factory.Code(" {}\r\n").AsStatement(), Factory.MetaCode("}").Accepts(AcceptedCharacters.None) ), new RazorError(RazorResources.ParseError_Unexpected_WhiteSpace_At_Start_Of_CodeBlock_CS, 8, 1, 5)); } [Fact] public void ParseBlockMethodProducesErrorIfEOFAfterTransitionInEmbeddedExpression() { ParseBlockTest(@"{ @", new StatementBlock( Factory.MetaCode("{").Accepts(AcceptedCharacters.None), Factory.Code("\r\n ").AsStatement(), new ExpressionBlock( Factory.CodeTransition(), Factory.EmptyCSharp() .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: true) .Accepts(AcceptedCharacters.NonWhiteSpace)), Factory.EmptyCSharp().AsStatement() ), new RazorError(RazorResources.ParseError_Unexpected_EndOfFile_At_Start_Of_CodeBlock, 8, 1, 5), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, RazorResources.BlockName_Code, "}", "{"), SourceLocation.Zero)); } [Fact] public void ParseBlockMethodParsesNothingIfFirstCharacterIsNotIdentifierStartOrParenOrBrace() { ParseBlockTest("@!!!", new ExpressionBlock( Factory.CodeTransition(), Factory.EmptyCSharp() .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) .Accepts(AcceptedCharacters.NonWhiteSpace)), new RazorError( String.Format(RazorResources.ParseError_Unexpected_Character_At_Start_Of_CodeBlock_CS, "!"), 1, 0, 1)); } [Fact] public void ParseBlockShouldReportErrorAndTerminateAtEOFIfIfParenInExplicitExpressionUnclosed() { ParseBlockTest(@"(foo bar baz", new ExpressionBlock( Factory.MetaCode("(").Accepts(AcceptedCharacters.None), Factory.Code("foo bar\r\nbaz").AsExpression() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, RazorResources.BlockName_ExplicitExpression, ')', '('), new SourceLocation(0, 0, 0))); } [Fact] public void ParseBlockShouldReportErrorAndTerminateAtMarkupIfIfParenInExplicitExpressionUnclosed() { ParseBlockTest(@"(foo bar baz @Html.Foo(Bar); ", new ExpressionBlock( Factory.Code("Href(\r\n") .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(4, 0, 4))); } [Fact] // Test for fix to Dev10 884975 - Incorrect Error Messaging public void ParseBlockShouldReportErrorAndTerminateAtEOFIfParenInImplicitExpressionUnclosed() { ParseBlockTest(@"Foo(Bar(Baz) Biz Boz", new ExpressionBlock( Factory.Code("Foo(Bar(Baz)\r\nBiz\r\nBoz") .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) ), new RazorError(String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(3, 0, 3))); } [Fact] // Test for fix to Dev10 884975 - Incorrect Error Messaging public void ParseBlockShouldReportErrorAndTerminateAtMarkupIfParenInImplicitExpressionUnclosed() { ParseBlockTest(@"Foo(Bar(Baz) Biz Boz ", new ExpressionBlock( Factory.Code("Foo(Bar(Baz)\r\nBiz\r\n") .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) ), new RazorError(String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(3, 0, 3))); } [Fact] // Test for fix to Dev10 884975 - Incorrect Error Messaging public void ParseBlockShouldReportErrorAndTerminateAtEOFIfBracketInImplicitExpressionUnclosed() { ParseBlockTest(@"Foo[Bar[Baz] Biz Boz", new ExpressionBlock( Factory.Code("Foo[Bar[Baz]\r\nBiz\r\nBoz") .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "[", "]"), new SourceLocation(3, 0, 3))); } [Fact] // Test for fix to Dev10 884975 - Incorrect Error Messaging public void ParseBlockShouldReportErrorAndTerminateAtMarkupIfBracketInImplicitExpressionUnclosed() { ParseBlockTest(@"Foo[Bar[Baz] Biz Boz ", new ExpressionBlock( Factory.Code("Foo[Bar[Baz]\r\nBiz\r\n") .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "[", "]"), new SourceLocation(3, 0, 3))); } // Simple EOF handling errors: [Fact] public void ParseBlockReportsErrorIfExplicitCodeBlockUnterminatedAtEOF() { ParseBlockTest("{ var foo = bar; if(foo != null) { bar(); } ", new StatementBlock( Factory.MetaCode("{").Accepts(AcceptedCharacters.None), Factory.Code(" var foo = bar; if(foo != null) { bar(); } ").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, RazorResources.BlockName_Code, '}', '{'), SourceLocation.Zero)); } [Fact] public void ParseBlockReportsErrorIfClassBlockUnterminatedAtEOF() { ParseBlockTest("functions { var foo = bar; if(foo != null) { bar(); } ", new FunctionsBlock( Factory.MetaCode("functions {").Accepts(AcceptedCharacters.None), Factory.Code(" var foo = bar; if(foo != null) { bar(); } ").AsFunctionsBody() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "functions", '}', '{'), SourceLocation.Zero)); } [Fact] public void ParseBlockReportsErrorIfIfBlockUnterminatedAtEOF() { RunUnterminatedSimpleKeywordBlock("if"); } [Fact] public void ParseBlockReportsErrorIfElseBlockUnterminatedAtEOF() { ParseBlockTest("if(foo) { baz(); } else { var foo = bar; if(foo != null) { bar(); } ", new StatementBlock( Factory.Code("if(foo) { baz(); } else { var foo = bar; if(foo != null) { bar(); } ").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "else", '}', '{'), new SourceLocation(19, 0, 19))); } [Fact] public void ParseBlockReportsErrorIfElseIfBlockUnterminatedAtEOF() { ParseBlockTest("if(foo) { baz(); } else if { var foo = bar; if(foo != null) { bar(); } ", new StatementBlock( Factory.Code("if(foo) { baz(); } else if { var foo = bar; if(foo != null) { bar(); } ").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "else if", '}', '{'), new SourceLocation(19, 0, 19))); } [Fact] public void ParseBlockReportsErrorIfDoBlockUnterminatedAtEOF() { ParseBlockTest("do { var foo = bar; if(foo != null) { bar(); } ", new StatementBlock( Factory.Code("do { var foo = bar; if(foo != null) { bar(); } ").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "do", '}', '{'), SourceLocation.Zero)); } [Fact] public void ParseBlockReportsErrorIfTryBlockUnterminatedAtEOF() { ParseBlockTest("try { var foo = bar; if(foo != null) { bar(); } ", new StatementBlock( Factory.Code("try { var foo = bar; if(foo != null) { bar(); } ").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "try", '}', '{'), SourceLocation.Zero)); } [Fact] public void ParseBlockReportsErrorIfCatchBlockUnterminatedAtEOF() { ParseBlockTest("try { baz(); } catch(Foo) { var foo = bar; if(foo != null) { bar(); } ", new StatementBlock( Factory.Code("try { baz(); } catch(Foo) { var foo = bar; if(foo != null) { bar(); } ").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "catch", '}', '{'), new SourceLocation(15, 0, 15))); } [Fact] public void ParseBlockReportsErrorIfFinallyBlockUnterminatedAtEOF() { ParseBlockTest("try { baz(); } finally { var foo = bar; if(foo != null) { bar(); } ", new StatementBlock( Factory.Code("try { baz(); } finally { var foo = bar; if(foo != null) { bar(); } ").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "finally", '}', '{'), new SourceLocation(15, 0, 15))); } [Fact] public void ParseBlockReportsErrorIfForBlockUnterminatedAtEOF() { RunUnterminatedSimpleKeywordBlock("for"); } [Fact] public void ParseBlockReportsErrorIfForeachBlockUnterminatedAtEOF() { RunUnterminatedSimpleKeywordBlock("foreach"); } [Fact] public void ParseBlockReportsErrorIfWhileBlockUnterminatedAtEOF() { RunUnterminatedSimpleKeywordBlock("while"); } [Fact] public void ParseBlockReportsErrorIfSwitchBlockUnterminatedAtEOF() { RunUnterminatedSimpleKeywordBlock("switch"); } [Fact] public void ParseBlockReportsErrorIfLockBlockUnterminatedAtEOF() { RunUnterminatedSimpleKeywordBlock("lock"); } [Fact] public void ParseBlockReportsErrorIfUsingBlockUnterminatedAtEOF() { RunUnterminatedSimpleKeywordBlock("using"); } [Fact] public void ParseBlockRequiresControlFlowStatementsToHaveBraces() { string expectedMessage = String.Format(RazorResources.ParseError_SingleLine_ControlFlowStatements_Not_Allowed, "{", "<"); ParseBlockTest("if(foo)
Bar
else if(bar)Baz
elseBoz
", new StatementBlock( Factory.Code("if(foo) ").AsStatement(), new MarkupBlock( Factory.Markup("Bar
").Accepts(AcceptedCharacters.None) ), Factory.Code("else if(bar) ").AsStatement(), new MarkupBlock( Factory.Markup("Baz
").Accepts(AcceptedCharacters.None) ), Factory.Code("else ").AsStatement(), new MarkupBlock( Factory.Markup("Boz
").Accepts(AcceptedCharacters.None) ), Factory.EmptyCSharp().AsStatement() ), new RazorError(expectedMessage, 8, 0, 8), new RazorError(expectedMessage, 32, 0, 32), new RazorError(expectedMessage, 48, 0, 48)); } [Fact] public void ParseBlockIncludesUnexpectedCharacterInSingleStatementControlFlowStatementError() { ParseBlockTest("if(foo)) { var bar = foo; }", new StatementBlock( Factory.Code("if(foo)) { var bar = foo; }").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_SingleLine_ControlFlowStatements_Not_Allowed, "{", ")"), new SourceLocation(7, 0, 7))); } [Fact] public void ParseBlockOutputsErrorIfAtSignFollowedByLessThanSignAtStatementStart() { ParseBlockTest("if(foo) { @Bar
}", new StatementBlock( Factory.Code("if(foo) {").AsStatement(), new MarkupBlock( Factory.Markup(" "), Factory.MarkupTransition(), Factory.Markup("Bar
").Accepts(AcceptedCharacters.None) ), Factory.Code("}").AsStatement() ), new RazorError( RazorResources.ParseError_AtInCode_Must_Be_Followed_By_Colon_Paren_Or_Identifier_Start, 10, 0, 10)); } [Fact] public void ParseBlockTerminatesIfBlockAtEOLWhenRecoveringFromMissingCloseParen() { ParseBlockTest(@"if(foo bar baz", new StatementBlock( Factory.Code("if(foo bar\r\n").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(2, 0, 2))); } [Fact] public void ParseBlockTerminatesForeachBlockAtEOLWhenRecoveringFromMissingCloseParen() { ParseBlockTest(@"foreach(foo bar baz", new StatementBlock( Factory.Code("foreach(foo bar\r\n").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(7, 0, 7))); } [Fact] public void ParseBlockTerminatesWhileClauseInDoStatementAtEOLWhenRecoveringFromMissingCloseParen() { ParseBlockTest(@"do { } while(foo bar baz", new StatementBlock( Factory.Code("do { } while(foo bar\r\n").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(12, 0, 12))); } [Fact] public void ParseBlockTerminatesUsingBlockAtEOLWhenRecoveringFromMissingCloseParen() { ParseBlockTest(@"using(foo bar baz", new StatementBlock( Factory.Code("using(foo bar\r\n").AsStatement() ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(5, 0, 5))); } [Fact] public void ParseBlockResumesIfStatementAfterOpenParen() { ParseBlockTest(@"if( else {Foo
}", new StatementBlock( Factory.Code("if(\r\nelse {").AsStatement(), new MarkupBlock( Factory.Markup("Foo
").Accepts(AcceptedCharacters.None) ), Factory.Code("}").AsStatement().Accepts(AcceptedCharacters.None) ), new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), new SourceLocation(2, 0, 2))); } [Fact] public void ParseBlockTerminatesNormalCSharpStringsAtEOLIfEndQuoteMissing() { SingleSpanBlockTest(@"if(foo) { var p = ""foo bar baz ; }", BlockType.Statement, SpanKind.Code, new RazorError(RazorResources.ParseError_Unterminated_String_Literal, 23, 1, 12)); } [Fact] public void ParseBlockTerminatesNormalStringAtEndOfFile() { SingleSpanBlockTest("if(foo) { var foo = \"blah blah blah blah blah", BlockType.Statement, SpanKind.Code, new RazorError(RazorResources.ParseError_Unterminated_String_Literal, 20, 0, 20), new RazorError(String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "if", '}', '{'), SourceLocation.Zero)); } [Fact] public void ParseBlockTerminatesVerbatimStringAtEndOfFile() { SingleSpanBlockTest(@"if(foo) { var foo = @""blah blah;Foo
blah blah", BlockType.Statement, SpanKind.Code, new RazorError(RazorResources.ParseError_Unterminated_String_Literal, 20, 0, 20), new RazorError(String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, "if", '}', '{'), SourceLocation.Zero)); } [Fact] public void ParseBlockCorrectlyParsesMarkupIncorrectyAssumedToBeWithinAStatement() { ParseBlockTest(@"if(foo) { var foo = ""foo bar bazFoo is @foo
}", new StatementBlock( Factory.Code("if(foo) {\r\n var foo = \"foo bar baz\r\n ").AsStatement(), new MarkupBlock( Factory.Markup("Foo is "), new ExpressionBlock( Factory.CodeTransition(), Factory.Code("foo") .AsImplicitExpression(CSharpCodeParser.DefaultKeywords) .Accepts(AcceptedCharacters.NonWhiteSpace)), Factory.Markup("
\r\n").Accepts(AcceptedCharacters.None)), Factory.Code("}").AsStatement() ), new RazorError( RazorResources.ParseError_Unterminated_String_Literal, 25, 1, 14)); } [Fact] public void ParseBlockCorrectlyParsesAtSignInDelimitedBlock() { ParseBlockTest("(Request[\"description\"] ?? @photo.Description)", new ExpressionBlock( Factory.MetaCode("(").Accepts(AcceptedCharacters.None), Factory.Code("Request[\"description\"] ?? @photo.Description").AsExpression(), Factory.MetaCode(")").Accepts(AcceptedCharacters.None) )); } [Fact] public void ParseBlockCorrectlyRecoversFromMissingCloseParenInExpressionWithinCode() { ParseBlockTest(@"{String.Format(}", new StatementBlock( Factory.MetaCode("{").Accepts(AcceptedCharacters.None), Factory.Code("String.Format(") .AsStatement(), new MarkupBlock( Factory.Markup("").Accepts(AcceptedCharacters.None)), Factory.EmptyCSharp().AsStatement(), Factory.MetaCode("}").Accepts(AcceptedCharacters.None)), expectedErrors: new [] { new RazorError( String.Format(RazorResources.ParseError_Expected_CloseBracket_Before_EOF, "(", ")"), 14, 0, 14) }); } private void RunUnterminatedSimpleKeywordBlock(string keyword) { SingleSpanBlockTest(keyword + " (foo) { var foo = bar; if(foo != null) { bar(); } ", BlockType.Statement, SpanKind.Code, new RazorError(String.Format(RazorResources.ParseError_Expected_EndOfBlock_Before_EOF, keyword, '}', '{'), SourceLocation.Zero)); } } }