193 lines
9.1 KiB
C#
193 lines
9.1 KiB
C#
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//
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// CodeGenerator.GenerateFromCompileUnit Tests
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//
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// Authors:
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// Ilker Cetinkaya (mail@ilker.de)
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//
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// This is a specific test for an issue on GenerateFromCompileUnit.
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// Up until 2012 (version 2.10.n) the method emits attribute first
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// and imports afterwards on global namespace scope. Example:
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//
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// ~~~~
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// [assembly: AssemblyVersion("1.0")]
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// using System.Reflection;
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// ~~~~
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//
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// This in particular causes compiler to bail with CS1529.
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// Albeit well aware that this is a _language specific_ issue
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// (or requirement), the actual fix is aimed on CodeGenerator since
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// the wrong emit order is as well in GenerateFromCompileUnit of abstract
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// base. The probability to harm any other language generators
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// is very low. It's near common sense to have imports on top
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// on global namespace / file level.
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//
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// The test is being repeated for the internal `CSharpCodeGenerator`.
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// See `Microsoft.CSharp` (Mono.CSharp namespace) for details.
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//
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// This test verifies the issue as well as describes correct expectation.
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using System;
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using System.CodeDom;
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using System.CodeDom.Compiler;
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using Microsoft.CSharp;
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using System.IO;
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using NUnit.Framework;
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namespace MonoTests.System.CodeDom.Compiler
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{
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[TestFixture]
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public class CodeGeneratorGenerateFromCompileUnitTest {
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[Test]
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public void When_Having_AssemblyAttribute_And_Using_Namespace_It_Should_Generate_Namespace_First_And_Attribute_Afterwards () {
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ICodeGenerator generator = new SampleCodeGenerator ();
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var compileUnit = ACompileUnitWithAttributeAndNamespace ();
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var writer = new StringWriter ();
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var options = new CodeGeneratorOptions ();
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generator.GenerateCodeFromCompileUnit (compileUnit, writer, options);
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string result = writer.ToString ();
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int importPosition = result.IndexOf (IMPORT);
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int attributePosition = result.IndexOf (ATTRIBUTE);
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Assert.Greater (attributePosition, importPosition, "Actual order: " + result);
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}
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[Test]
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public void CodeSnippetBlankLines ()
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{
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var opt = new CodeGeneratorOptions () {
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BlankLinesBetweenMembers = false,
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VerbatimOrder = false
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};
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var ccu = new CodeCompileUnit ();
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var ns = new CodeNamespace ("Foo");
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ccu.Namespaces.Add (ns);
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var t = new CodeTypeDeclaration ("Bar");
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ns.Types.Add (t);
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t.Members.Add (new CodeSnippetTypeMember ("#line hidden"));
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t.Members.Add (new CodeSnippetTypeMember ("#line hidden2"));
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t.Members.Add (new CodeMemberMethod () { Name = "Foo" });
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using (var sw = new StringWriter ()) {
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new CSharpCodeProvider ().GenerateCodeFromCompileUnit (ccu, sw, opt);
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var str = sw.ToString ();
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Assert.IsFalse (str.Contains ("hidden2private"), "#0");
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Assert.IsTrue (str.Contains( "#line hidden#line hidden2"), "#1");
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}
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}
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[Test]
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public void CodeSnippetBlankLinesVerbatimOrder ()
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{
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var opt = new CodeGeneratorOptions () {
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BlankLinesBetweenMembers = false,
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VerbatimOrder = true
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};
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var ccu = new CodeCompileUnit ();
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var ns = new CodeNamespace ("Foo");
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ccu.Namespaces.Add (ns);
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var t = new CodeTypeDeclaration ("Bar");
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ns.Types.Add (t);
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t.Members.Add (new CodeSnippetTypeMember ("#line hidden"));
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t.Members.Add (new CodeSnippetTypeMember ("#line hidden2"));
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t.Members.Add (new CodeMemberMethod () { Name = "Foo" });
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using (var sw = new StringWriter ()) {
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new CSharpCodeProvider ().GenerateCodeFromCompileUnit (ccu, sw, opt);
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var str = sw.ToString ();
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Assert.IsFalse (str.Contains ("hidden2private"), "#0");
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Assert.IsFalse (str.Contains( "#line hidden#line hidden2"), "#1");
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Assert.IsTrue (str.Contains( "#line hidden" + Environment.NewLine), "#2");
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Assert.IsTrue (str.Contains( "#line hidden2" + Environment.NewLine), "#3");
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}
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}
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private const string ATTRIBUTE = "ATTRIBUTE";
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private const string IMPORT = "IMPORT";
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private CodeCompileUnit ACompileUnitWithAttributeAndNamespace () {
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var compileUnit = new CodeCompileUnit ();
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var importNs = new CodeNamespace ();
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importNs.Imports.Add (new CodeNamespaceImport (IMPORT));
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compileUnit.AssemblyCustomAttributes.Add (new CodeAttributeDeclaration (ATTRIBUTE));
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compileUnit.Namespaces.Add (importNs);
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return compileUnit;
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}
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private class SampleCodeGenerator : CodeGenerator {
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/* test overrides */
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protected override void GenerateAttributeDeclarationsStart (CodeAttributeDeclarationCollection attributes) { Output.Write ("ATTRIBUTE"); }
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protected override void GenerateAttributeDeclarationsEnd (CodeAttributeDeclarationCollection attributes) {}
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protected override void GenerateNamespaceImport (CodeNamespaceImport i) { Output.Write ("IMPORT"); }
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/* must overrides */
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protected override string NullToken { get { return string.Empty; } }
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protected override void GenerateArgumentReferenceExpression (CodeArgumentReferenceExpression e) {}
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protected override void GenerateArrayCreateExpression (CodeArrayCreateExpression e) {}
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protected override void GenerateArrayIndexerExpression (CodeArrayIndexerExpression e) {}
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protected override void GenerateAssignStatement (CodeAssignStatement s) {}
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protected override void GenerateAttachEventStatement (CodeAttachEventStatement s) {}
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protected override void GenerateBaseReferenceExpression (CodeBaseReferenceExpression e) {}
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protected override void GenerateCastExpression (CodeCastExpression e) {}
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protected override void GenerateComment (CodeComment comment) {}
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protected override void GenerateConditionStatement (CodeConditionStatement s) {}
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protected override void GenerateConstructor (CodeConstructor x, CodeTypeDeclaration d) {}
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protected override void GenerateDelegateCreateExpression (CodeDelegateCreateExpression e) {}
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protected override void GenerateDelegateInvokeExpression (CodeDelegateInvokeExpression e) {}
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protected override void GenerateEntryPointMethod (CodeEntryPointMethod m, CodeTypeDeclaration d) {}
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protected override void GenerateEvent (CodeMemberEvent ev, CodeTypeDeclaration d) {}
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protected override void GenerateEventReferenceExpression (CodeEventReferenceExpression e) {}
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protected override void GenerateExpressionStatement (CodeExpressionStatement statement) {}
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protected override void GenerateField (CodeMemberField f) {}
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protected override void GenerateFieldReferenceExpression (CodeFieldReferenceExpression e) {}
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protected override void GenerateGotoStatement (CodeGotoStatement statement) {}
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protected override void GenerateIndexerExpression (CodeIndexerExpression e) {}
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protected override void GenerateIterationStatement (CodeIterationStatement s) {}
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protected override void GenerateLabeledStatement (CodeLabeledStatement statement) {}
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protected override void GenerateLinePragmaStart (CodeLinePragma p) {}
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protected override void GenerateLinePragmaEnd (CodeLinePragma p) {}
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protected override void GenerateMethod (CodeMemberMethod m, CodeTypeDeclaration d) {}
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protected override void GenerateMethodInvokeExpression (CodeMethodInvokeExpression e) {}
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protected override void GenerateMethodReferenceExpression (CodeMethodReferenceExpression e) {}
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protected override void GenerateMethodReturnStatement (CodeMethodReturnStatement e) {}
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protected override void GenerateNamespaceStart (CodeNamespace ns) {}
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protected override void GenerateNamespaceEnd (CodeNamespace ns) {}
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protected override void GenerateObjectCreateExpression (CodeObjectCreateExpression e) {}
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protected override void GenerateProperty (CodeMemberProperty p, CodeTypeDeclaration d) {}
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protected override void GeneratePropertyReferenceExpression (CodePropertyReferenceExpression e) {}
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protected override void GeneratePropertySetValueReferenceExpression (CodePropertySetValueReferenceExpression e) {}
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protected override void GenerateRemoveEventStatement (CodeRemoveEventStatement statement) {}
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protected override void GenerateSnippetExpression (CodeSnippetExpression e) {}
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protected override void GenerateSnippetMember (CodeSnippetTypeMember m) {}
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protected override void GenerateThisReferenceExpression (CodeThisReferenceExpression e) {}
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protected override void GenerateThrowExceptionStatement (CodeThrowExceptionStatement s) {}
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protected override void GenerateTryCatchFinallyStatement (CodeTryCatchFinallyStatement s) {}
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protected override void GenerateTypeEnd (CodeTypeDeclaration declaration) {}
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protected override void GenerateTypeConstructor (CodeTypeConstructor constructor) {}
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protected override void GenerateTypeStart (CodeTypeDeclaration declaration) {}
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protected override void GenerateVariableDeclarationStatement (CodeVariableDeclarationStatement e) {}
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protected override void GenerateVariableReferenceExpression (CodeVariableReferenceExpression e) {}
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protected override void OutputType (CodeTypeReference t) {}
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protected override string QuoteSnippetString (string value) { return string.Empty; }
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protected override string CreateEscapedIdentifier (string value) { return string.Empty; }
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protected override string CreateValidIdentifier (string value) { return string.Empty; }
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protected override string GetTypeOutput (CodeTypeReference type) { return string.Empty; }
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protected override bool IsValidIdentifier (string value) { return false; }
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protected override bool Supports (GeneratorSupport supports) { return false; }
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}
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}
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}
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