private ClassDeclarationSyntax ImplementInterfaceByChild(string childClassName)
{
var sourceCode = new SourceCode(Files.Interface);
var childClass = sourceCode.Class(childClassName);
var startPos = childClass.GetLocation().SourceSpan.Start;
// create a mixin class that implements an interface
var mixin = Substitute.For<MixinReference>();
var @class = Substitute.For<ClassWithTypeSymbol>();
@class.IsInterface.Returns(false);
@class.Interfaces.Returns(
new InterfaceList(
new Interface(sourceCode.GetTypeByName(nameof(IFirstInterface)))));
mixin.Class.Returns(@class);
var interfaces = new InterfaceList(new[]
{
new Interface(sourceCode.GetTypeByName(nameof(IFirstInterface)))
});
var addInterfaceWriter = new AddInterfacesToChildSyntaxWriter(mixin,sourceCode.Semantic, startPos);
var newChildClass = addInterfaceWriter.Visit(childClass);
return (ClassDeclarationSyntax)newChildClass;
}
public void ChildWithOneInterface_IncludeMixinWithManyInterfaces_OnlyMissingInterfacesAdded()
{
var sourceCode = new SourceCode(Files.Interface);
var childClass = sourceCode.Class(nameof(ChildWithInterface));
var startPos = childClass.GetLocation().SourceSpan.Start;
var interfaces = new InterfaceList(new[]
{
new Interface(sourceCode.GetTypeByName(nameof(IFirstInterface))),
new Interface(sourceCode.GetTypeByName(nameof(ISecondInterface)))
});
var @class = Substitute.For<ClassWithTypeSymbol>();
@class.IsInterface.Returns(false);
@class.Interfaces.Returns(interfaces);
var mixin = Substitute.For<MixinReference>();
mixin.Class.Returns(@class);
var addInterfaceWriter = new AddInterfacesToChildSyntaxWriter(mixin, sourceCode.Semantic, startPos);
var newChildClass = (ClassDeclarationSyntax)addInterfaceWriter.Visit(childClass);
var baseList = newChildClass.BaseList.Types;
// assert: child class should have both interfaces
Assert.AreEqual(2, baseList.Count);
Assert.IsNotNull(
baseList.Single(x => x.TypeName() == nameof(IFirstInterface)));
Assert.IsNotNull(
baseList.Single(x => x.TypeName() == nameof(ISecondInterface)));
}
public void ClassWithBaseClass_CreateFromSymbol_ClassAndBaseClassCreated()
{
// arrange
// 1. load source files and get class and mixin declarations
var sourceCode = new SourceCode(Files.Person);
var personClass = sourceCode.Class(nameof(ThirdPersonClass));
var classFactory = new ClassFactory(sourceCode.Semantic);
var @class = classFactory.Create(personClass);
Assert.IsFalse(@class.Properties.Any());
Assert.AreEqual("Name", @class.BaseClass.BaseClass.Properties.Single().Name);
}
public void ClassFactory_CreateFromCode_ClassCreated()
{
// arrange
// 1. load source files and get class and mixin declarations
var sourceCode = new SourceCode(Files.Person);
var personClass = sourceCode.Class(nameof(WorkingPerson));
var classFactory = new ClassFactory(sourceCode.Semantic);
var @class = classFactory.Create(personClass);
Assert.AreEqual("Name", @class.Properties.Single().Name);
Assert.AreEqual("void Work(int toolNumber)", @class.Methods.Single().ToString());
}
public void ClassWithMethodWithParameter_Read_MethodRead()
{
// arrange
// 1. load source files and get class and mixin declarations
var sourceCode = new SourceCode(Files.Worker);
var workerClass = sourceCode.Class(nameof(WorkerWithTool));
var methodList = new MethodList();
var methodReader = new MethodSyntaxReader(methodList, sourceCode.Semantic);
methodReader.Visit(workerClass);
Assert.AreEqual(1, methodList.Count);
Assert.AreEqual("void Work(int toolNumber)", methodList[0].ToString());
}
public void ClassWithProperty_Read_PropertyRead()
{
// arrange
// 1. load source files and get class and mixin declarations
var sourceCode = new SourceCode(Files.Person);
var personClass = sourceCode.Class(nameof(PersonWithName));
var propertyList = new PropertyList();
var propertySyntaxReader = new PropertySyntaxReader(propertyList,sourceCode.Semantic);
propertySyntaxReader.Visit(personClass);
Assert.AreEqual(1, propertyList.Count);
Assert.AreEqual("Name", propertyList[0].Name);
}
public void PropertiesInMixinAndChild_Mix_OnlyMissingPropertiesToImplement()
{
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(PersonWithFullName));
var mixinField = personClass.FindMixinReference("_name");
var child = new ClassFactory(sourceCode.Semantic).Create(personClass);
var mixin = new MixinReferenceFactory(sourceCode.Semantic).Create(mixinField);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// Assert: all properties of mixin should be implemented
Assert.AreEqual(2, mixer.MembersToImplement.Count());
}
public void PropertiesInBaseClass_Mix_NoPropertyToImplement()
{
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(ThirdPersonClass));
var mixinField = personClass.FindMixinReference("_name");
var child = new ClassFactory(sourceCode.Semantic).Create(personClass);
var mixin = new MixinReferenceFactory(sourceCode.Semantic).Create(mixinField);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// Assert: all properties of mixin should be implemented
Assert.IsEmpty(mixer.MembersToImplement);
}
public void ClassDeclarationWithLambda_ReadParameter_IgnoreLambdaParameter()
{
var sourceCode = new SourceCode(Files.Person);
var personClass = sourceCode.Class(nameof(PersonWithLambdaMethod));
var parameterList = new ParameterList();
var parameterSyntaxReader = new ParameterSyntaxReader(parameterList, sourceCode.Semantic);
parameterSyntaxReader.Visit(personClass);
// the parameter that is used in the lambda expression should not
// be added to the parameter list, but the method parameter should be
Assert.AreEqual(1, parameterList.ParameterCount);
Assert.AreEqual("methodParameter", parameterList.Single().Name);
}
public void MixinWithStaticMethod_Include_MethodNotIncluded()
{
var sourceCode = new SourceCode(Files.Person, Files.Worker);
var personClass = sourceCode.Class(nameof(PersonWithStaticMethodMixin));
var mixinReference = personClass.FindMixinReference("_worker");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// no method to implement
Assert.IsEmpty(mixer.MethodsToImplement);
}
public void MethodImplementedWithOtherParameter_Include_MethodIncluded()
{
var sourceCode = new SourceCode(Files.Person, Files.Worker);
var personClass = sourceCode.Class(nameof(PersonWithOtherWorkMethod));
var mixinReference = personClass.FindMixinReference("_worker");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// no method to implement
Assert.AreEqual(1,mixer.MethodsToImplement.Count(x => x.Name == "Work"));
}
public void MixinWithMethod_Include_MethodsIncluded()
{
var sourceCode = new SourceCode(Files.Person, Files.Worker);
var personClass = sourceCode.Class(nameof(Person));
var mixinReference = personClass.FindMixinReference("_worker");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
Assert.AreEqual(mixer.MethodsToImplement.Count(), mixin.Class.Methods.Count());
foreach (var service in mixin.Class.Methods)
Assert.AreEqual(1, mixer.MethodsToImplement.Count(x => x.Name == service.Name));
}
public void MixinClassWithProperty_Include_PropertiesIncluded()
{
// arrange
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(Person));
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// assert all properties of the mixin should have been added
Assert.AreEqual(mixin.Class.Properties.Count(),mixer.PropertiesToImplement.Count());
// check that every method of mixin appears only once in the child
foreach (var service in mixin.Class.Properties)
Assert.AreEqual(1, mixer.PropertiesToImplement.Count(x => x.Name == service.Name));
}
private void ValidateCommentForMember(string mixinReferenceName)
{
// arrange
var sourceCode = new SourceCode(Files.Comments);
var childClass = sourceCode.Class(nameof(Child));
var mixinClass = new MixinReferenceFactory(sourceCode.Semantic)
.Create(childClass.FindMixinReference(mixinReferenceName));
var settings = new Settings(includeDocumentation: true);
var mixinCommand = new IncludeMixinCommand(mixinClass);
// act
var newClassDeclaration = mixinCommand.Execute(
childClass,
sourceCode.Semantic,
settings);
Assert.IsTrue(
ValidationHelpers.HasSameDocumentation(
newClassDeclaration,
mixinCommand.Mixin));
}
public void MixinWithPropertyExpressionBody_Include_PropertyHasGetter()
{
// arrange
// 1. load source files and get class and mixin declarations
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(PersonWithGetterName));
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
// 2. create instances for mixin and child mixin
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// assert. Only one property in resulting class
Assert.AreEqual(1, mixer.PropertiesToImplement.Count());
// the expression body should be converted to a HasGetter
Assert.AreEqual(1, mixer.PropertiesToImplement.Count(x => x.IsReadOnly));
}
public void MixinInterfaceWithProperty_Include_PropertiesIncluded()
{
// arrange
// 1. load source files and get class and mixin declarations
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(Person));
var mixinReference = personClass.FindMixinReference("_interfaceName");
var semanticModel = sourceCode.Semantic;
// 2. create instances for mixin and child mixin
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// assert. The child should have the same properties as the mixin
Assert.AreEqual(mixin.Class.Properties.Count(), mixer.PropertiesToImplement.Count());
// check that every method of mixin appears only once in the child
foreach (var service in mixin.Class.Properties)
Assert.AreEqual(1, mixer.PropertiesToImplement.Count(x => x.Name == service.Name));
}
public void AddDocumentationAndCreateRegion_Created()
{
// arrange
var sourceCode = new SourceCode(Files.Comments);
var childClass = sourceCode.Class(nameof(Child));
var mixinClass =
new MixinReferenceFactory(sourceCode.Semantic)
.Create(childClass.FindMixinReference("_mixinWithProperty"));
var settings = new Settings(includeDocumentation: true,createRegions: true);
var mixinCommand = new IncludeMixinCommand(mixinClass);
// act
var newClassDeclaration = mixinCommand.Execute(childClass, sourceCode.Semantic,settings);
// assert: there should be a region and a documentation
var isPropertyBetweenRegion = IsPropertyBetweenRegion(
newClassDeclaration,
"mixin _mixinWithProperty",
"Property");
var hasSameDocumentation = HasSameDocumentation(newClassDeclaration, mixinCommand.Mixin);
Assert.IsTrue(isPropertyBetweenRegion);
Assert.IsTrue(hasSameDocumentation);
}
protected void WithExternalAssemblyFromType(Type externalType)
{
_sourceCode = new SourceCode();
_sourceCode.CompileFromAssemblyOfType(externalType);
}
public void MixinWithToString_Include_ToStringShouldBeImplemented()
{
var sourceCode = new SourceCode(Files.Person, Files.Worker);
var personClass = sourceCode.Class(nameof(PersonWithToString));
var mixinReference = personClass.FindMixinReference("_toString");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// ToString should be in list of methods to override
Assert.IsTrue(mixer.MethodsToImplement.Any(x => x.Name == "ToString"));
// ToString in mixin must have override keyword
Assert.IsTrue(mixer.MethodsToImplement.Single(x => x.Name == "ToString").IsOverrideFromObject);
}
public void ChildHasBaseClassWithBaseClassesWithProperty_Include_PropertyNotReimplemented()
{
// arrange
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(ThirdPersonClass));
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// nothing to implement for the mixer, child already has property
Assert.IsEmpty(mixer.PropertiesToImplement);
}
protected void WithSourceFiles(params string[] sourceFiles)
{
_sourceCode = new SourceCode(sourceFiles);
}
public void MixinWithStaticProperty_Include_PropertyNotImplemented()
{
// arrange
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(PersonWithStaticMixin));
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// assert: Child should not have a "Name" property
Assert.IsEmpty(mixer.PropertiesToImplement);
}
public void ChildHasInterfaceWithProperty_Include_PropertyImplemented()
{
// arrange
var sourceCode = new SourceCode(Files.NotCompilable, Files.Name);
var personClass = sourceCode.Class("DerivedFromInterfaceClass");
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// assert: Child should have one "Name" property
Assert.AreEqual(1, mixer.PropertiesToImplement.Count(x => x.Name == "Name"));
// this one property should have only getter (signature from interface and mixin is the same)
Assert.IsTrue(mixer.PropertiesToImplement.Single(x => x.Name == "Name").IsReadOnly);
}
public void MixinWithGenericProperty_Include_PropertyImplemented()
{
// arrange
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(PersonWithGenericMixin));
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// child should have "Name" property
Assert.AreEqual(1, mixer.PropertiesToImplement.Count(x => x.Name == "Names"));
// name property should be of type "IEnumerable<string>"
var typeName = mixer.PropertiesToImplement.Single().Type.ToString();
Assert.AreEqual("System.Collections.Generic.IEnumerable<string>", typeName);
}
public void MixinIsInterface_Include_MixinAddedAsInterface()
{
var sourceCode = new SourceCode(Files.Interface);
var childClass = sourceCode.Class(nameof(ChildWithoutInterface));
var startPos = childClass.GetLocation().SourceSpan.Start;
// the mixin will be an interface
var @class = Substitute.For<ClassWithTypeSymbol>();
@class.IsInterface.Returns(true);
@class.AsInterface().Returns(new Interface(sourceCode.GetTypeByName(nameof(IFirstInterface))));
var mixin = Substitute.For<MixinReference>();
mixin.Class.Returns(@class);
// act
var addInterfaceWriter = new AddInterfacesToChildSyntaxWriter(mixin, sourceCode.Semantic, startPos);
var newChildClass = (ClassDeclarationSyntax)addInterfaceWriter.Visit(childClass);
var baseList = newChildClass.BaseList.Types;
// assert: child class should have the mixin as interface
Assert.AreEqual(1, baseList.Count);
Assert.IsNotNull(baseList.Single(x => x.TypeName() == nameof(IFirstInterface)));
}
public void MixinWithIndexer_Include_IndexerImplemented()
{
// arrange
var sourceCode = new SourceCode(Files.Person, Files.Collection);
var personClass = sourceCode.Class(nameof(PersonWithIndexer));
var mixinReference = personClass.FindMixinReference("_collection");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
// act
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// child should also have an indexer property now
Assert.AreEqual(1, mixer.PropertiesToImplement.Count());
Assert.AreEqual("string this[int index]", mixer.PropertiesToImplement.Single().ToString());
}
public void MixinIsInterfaceInDifferentNamespace_Include_MixinAddedAsFullQualifiedInterface()
{
var sourceCode = new SourceCode(Files.Interface);
var childClass = sourceCode.Class(nameof(ChildWithoutInterface));
// changing the start position here will force the type resolver
// to use a full qualified type name
var startPos = 0;
// the mixin will be an interface
var @class = Substitute.For<ClassWithTypeSymbol>();
@class.IsInterface.Returns(true);
@class.AsInterface().Returns(new Interface(
sourceCode.GetTypeByName(nameof(IFirstInterface))));
var mixin = Substitute.For<MixinReference>();
mixin.Class.Returns(@class);
// act
var addInterfaceWriter = new AddInterfacesToChildSyntaxWriter(mixin, sourceCode.Semantic, startPos);
var newChildClass = (ClassDeclarationSyntax)addInterfaceWriter.Visit(childClass);
var baseList = newChildClass.BaseList.Types;
// assert: child class should have the mixin as interface
Assert.AreEqual(1, baseList.Count);
Assert.IsNotNull(baseList.Single(x => x.TypeName() == "MixinRefactoring.Test.IFirstInterface"));
}
public void Setup()
{
_sourceCode = new SourceCode(Files.Interface);
_factory = new ClassFactory(_sourceCode.Semantic);
}
public void ChildWithAbstractProperty_Include_AbstractPropertyOverridden()
{
// we need Person file and NotCompilable because
// the base class is defined in Person file
var sourceCode = new SourceCode(Files.Person, Files.NotCompilable, Files.Name);
var personClass = sourceCode.Class("PersonFromAbstractName");
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// there should be two methods, from base mixin and derived mixin
Assert.AreEqual(1, mixer.PropertiesToImplement.Count());
// only one method from the mixin should be implemented, the other one
// is alredy implemented by childs base
Assert.AreEqual(1, mixer.PropertiesToImplement.Count(x => x.Name == "Name"));
Assert.IsTrue(mixer.PropertiesToImplement.Single().IsOverride);
}
public void ChildWithOverrideProperty_Include_PropertyOverrideNotCreated()
{
var sourceCode = new SourceCode(Files.Person, Files.Name);
var personClass = sourceCode.Class(nameof(PersonWithOverriddenProperty));
var mixinReference = personClass.FindMixinReference("_name");
var semanticModel = sourceCode.Semantic;
var mixin = new MixinReferenceFactory(semanticModel).Create(mixinReference);
var child = new ClassFactory(semanticModel).Create(personClass);
var mixer = new Mixer();
mixer.IncludeMixinInChild(mixin, child);
// no property to override because child overrides it already
Assert.AreEqual(0, mixer.PropertiesToImplement.Count());
}