Created
July 17, 2012 13:17
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ClassAutoData spiking
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[Theory] | |
[ClassAutoData( typeof( XProvider ) )] | |
public static void Scenario( X x, string y ) | |
{ | |
Console.WriteLine( x + "," + y ); | |
} | |
public class ClassAutoDataAttribute : CompositeDataAttribute | |
{ | |
public ClassAutoDataAttribute( Type @class ) | |
: base( new DataAttribute[] { new ClassDataAttribute( @class ), new AutoDataAttributeHack() } ) | |
{ | |
} | |
public override IEnumerable<object[]> GetData( System.Reflection.MethodInfo methodUnderTest, Type[] parameterTypes ) | |
{ | |
return | |
from result in Attributes.First().GetData( methodUnderTest, parameterTypes ).ToArray() | |
select result.Concat( Attributes.ElementAt( 1 ).GetData( methodUnderTest, parameterTypes.Skip( result.Length ).ToArray() ).First() ).ToArray(); | |
} | |
} | |
public class AutoDataAttributeHack : AutoDataAttribute | |
{ | |
public override IEnumerable<object[]> GetData( MethodInfo methodUnderTest, Type[] parameterTypes ) | |
{ | |
if ( methodUnderTest == null ) | |
{ | |
throw new ArgumentNullException( "methodUnderTest" ); | |
} | |
// BEGIN DIFF | |
var specimens = new List<object>(); | |
var methodParams = methodUnderTest.GetParameters(); | |
foreach ( var p in methodParams.Skip( methodParams.Length - parameterTypes.Length ) ) | |
// END DIFF | |
{ | |
this.CustomizeFixture( p ); | |
var specimen = this.Resolve( p ); | |
specimens.Add( specimen ); | |
} | |
return new[] { specimens.ToArray() }; | |
} | |
private void CustomizeFixture( ParameterInfo p ) | |
{ | |
var dummy = false; | |
var customizeAttributes = p.GetCustomAttributes( typeof( CustomizeAttribute ), dummy ).OfType<CustomizeAttribute>(); | |
foreach ( var ca in customizeAttributes ) | |
{ | |
var c = ca.GetCustomization( p ); | |
this.Fixture.Customize( c ); | |
} | |
} | |
private object Resolve( ParameterInfo p ) | |
{ | |
var context = new SpecimenContext( this.Fixture.Compose() ); | |
return context.Resolve( p ); | |
} | |
} | |
class XProvider : TupleTheoryDataProvider<X> | |
{ | |
protected override IEnumerable<X> Generate() | |
{ | |
return Enumerable.Repeat( X.Create(), 2 ); | |
} | |
} | |
public class X | |
{ | |
private X() { } | |
public static X Create() | |
{ | |
return new X(); | |
} | |
} | |
public abstract class TupleTheoryDataProvider<T1> : TheoryDataProvider | |
{ | |
protected abstract IEnumerable<T1> Generate(); | |
protected override sealed IEnumerable<object[]> DataSource() | |
{ | |
return Generate().Select( x => new object[] { x } ); | |
} | |
} | |
public abstract class TheoryDataProvider : IEnumerable<object[]> | |
{ | |
public IEnumerator<object[]> GetEnumerator() | |
{ | |
return DataSource().GetEnumerator(); | |
} | |
IEnumerator IEnumerable.GetEnumerator() | |
{ | |
return DataSource().GetEnumerator(); | |
} | |
protected abstract IEnumerable<object[]> DataSource(); | |
} |
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This gist now passes. Problem: It likely no longer fulfills lots of other goals now!