2 // CodeGenerator.GenerateFromCompileUnit Tests
5 // Ilker Cetinkaya (mail@ilker.de)
7 // This is a specific test for an issue on GenerateFromCompileUnit.
8 // Up until 2012 (version 2.10.n) the method emits attribute first
9 // and imports afterwards on global namespace scope. Example:
12 // [assembly: AssemblyVersion("1.0")]
13 // using System.Reflection;
16 // This in particular causes compiler to bail with CS1529.
17 // Albeit well aware that this is a _language specific_ issue
18 // (or requirement), the actual fix is aimed on CodeGenerator since
19 // the wrong emit order is as well in GenerateFromCompileUnit of abstract
20 // base. The probability to harm any other language generators
21 // is very low. It's near common sense to have imports on top
22 // on global namespace / file level.
24 // The test is being repeated for the internal `CSharpCodeGenerator`.
25 // See `Microsoft.CSharp` (Mono.CSharp namespace) for details.
27 // This test verifies the issue as well as describes correct expectation.
31 using System.CodeDom.Compiler;
34 using NUnit.Framework;
36 namespace MonoTests.System.CodeDom.Compiler
39 public class CodeGeneratorGenerateFromCompileUnitTest {
41 public void When_Having_AssemblyAttribute_And_Using_Namespace_It_Should_Generate_Namespace_First_And_Attribute_Afterwards () {
42 ICodeGenerator generator = new SampleCodeGenerator ();
43 var compileUnit = ACompileUnitWithAttributeAndNamespace ();
44 var writer = new StringWriter ();
45 var options = new CodeGeneratorOptions ();
47 generator.GenerateCodeFromCompileUnit (compileUnit, writer, options);
49 string result = writer.ToString ();
51 int importPosition = result.IndexOf (IMPORT);
52 int attributePosition = result.IndexOf (ATTRIBUTE);
54 Assert.Greater (attributePosition, importPosition, "Actual order: " + result);
57 private const string ATTRIBUTE = "ATTRIBUTE";
58 private const string IMPORT = "IMPORT";
60 private CodeCompileUnit ACompileUnitWithAttributeAndNamespace () {
61 var compileUnit = new CodeCompileUnit ();
62 var importNs = new CodeNamespace ();
64 importNs.Imports.Add (new CodeNamespaceImport (IMPORT));
66 compileUnit.AssemblyCustomAttributes.Add (new CodeAttributeDeclaration (ATTRIBUTE));
67 compileUnit.Namespaces.Add (importNs);
72 private class SampleCodeGenerator : CodeGenerator {
74 protected override void GenerateAttributeDeclarationsStart (CodeAttributeDeclarationCollection attributes) { Output.Write ("ATTRIBUTE"); }
75 protected override void GenerateAttributeDeclarationsEnd (CodeAttributeDeclarationCollection attributes) {}
76 protected override void GenerateNamespaceImport (CodeNamespaceImport i) { Output.Write ("IMPORT"); }
78 protected override string NullToken { get { return string.Empty; } }
79 protected override void GenerateArgumentReferenceExpression (CodeArgumentReferenceExpression e) {}
80 protected override void GenerateArrayCreateExpression (CodeArrayCreateExpression e) {}
81 protected override void GenerateArrayIndexerExpression (CodeArrayIndexerExpression e) {}
82 protected override void GenerateAssignStatement (CodeAssignStatement s) {}
83 protected override void GenerateAttachEventStatement (CodeAttachEventStatement s) {}
84 protected override void GenerateBaseReferenceExpression (CodeBaseReferenceExpression e) {}
85 protected override void GenerateCastExpression (CodeCastExpression e) {}
86 protected override void GenerateComment (CodeComment comment) {}
87 protected override void GenerateConditionStatement (CodeConditionStatement s) {}
88 protected override void GenerateConstructor (CodeConstructor x, CodeTypeDeclaration d) {}
89 protected override void GenerateDelegateCreateExpression (CodeDelegateCreateExpression e) {}
90 protected override void GenerateDelegateInvokeExpression (CodeDelegateInvokeExpression e) {}
91 protected override void GenerateEntryPointMethod (CodeEntryPointMethod m, CodeTypeDeclaration d) {}
92 protected override void GenerateEvent (CodeMemberEvent ev, CodeTypeDeclaration d) {}
93 protected override void GenerateEventReferenceExpression (CodeEventReferenceExpression e) {}
94 protected override void GenerateExpressionStatement (CodeExpressionStatement statement) {}
95 protected override void GenerateField (CodeMemberField f) {}
96 protected override void GenerateFieldReferenceExpression (CodeFieldReferenceExpression e) {}
97 protected override void GenerateGotoStatement (CodeGotoStatement statement) {}
98 protected override void GenerateIndexerExpression (CodeIndexerExpression e) {}
99 protected override void GenerateIterationStatement (CodeIterationStatement s) {}
100 protected override void GenerateLabeledStatement (CodeLabeledStatement statement) {}
101 protected override void GenerateLinePragmaStart (CodeLinePragma p) {}
102 protected override void GenerateLinePragmaEnd (CodeLinePragma p) {}
103 protected override void GenerateMethod (CodeMemberMethod m, CodeTypeDeclaration d) {}
104 protected override void GenerateMethodInvokeExpression (CodeMethodInvokeExpression e) {}
105 protected override void GenerateMethodReferenceExpression (CodeMethodReferenceExpression e) {}
106 protected override void GenerateMethodReturnStatement (CodeMethodReturnStatement e) {}
107 protected override void GenerateNamespaceStart (CodeNamespace ns) {}
108 protected override void GenerateNamespaceEnd (CodeNamespace ns) {}
109 protected override void GenerateObjectCreateExpression (CodeObjectCreateExpression e) {}
110 protected override void GenerateProperty (CodeMemberProperty p, CodeTypeDeclaration d) {}
111 protected override void GeneratePropertyReferenceExpression (CodePropertyReferenceExpression e) {}
112 protected override void GeneratePropertySetValueReferenceExpression (CodePropertySetValueReferenceExpression e) {}
113 protected override void GenerateRemoveEventStatement (CodeRemoveEventStatement statement) {}
114 protected override void GenerateSnippetExpression (CodeSnippetExpression e) {}
115 protected override void GenerateSnippetMember (CodeSnippetTypeMember m) {}
116 protected override void GenerateThisReferenceExpression (CodeThisReferenceExpression e) {}
117 protected override void GenerateThrowExceptionStatement (CodeThrowExceptionStatement s) {}
118 protected override void GenerateTryCatchFinallyStatement (CodeTryCatchFinallyStatement s) {}
119 protected override void GenerateTypeEnd (CodeTypeDeclaration declaration) {}
120 protected override void GenerateTypeConstructor (CodeTypeConstructor constructor) {}
121 protected override void GenerateTypeStart (CodeTypeDeclaration declaration) {}
122 protected override void GenerateVariableDeclarationStatement (CodeVariableDeclarationStatement e) {}
123 protected override void GenerateVariableReferenceExpression (CodeVariableReferenceExpression e) {}
124 protected override void OutputType (CodeTypeReference t) {}
125 protected override string QuoteSnippetString (string value) { return string.Empty; }
126 protected override string CreateEscapedIdentifier (string value) { return string.Empty; }
127 protected override string CreateValidIdentifier (string value) { return string.Empty; }
128 protected override string GetTypeOutput (CodeTypeReference type) { return string.Empty; }
129 protected override bool IsValidIdentifier (string value) { return false; }
130 protected override bool Supports (GeneratorSupport supports) { return false; }