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Added support of classes having methods with ref/out parameters and test #6

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Added support of classes having methods with ref/out parameters and test #6

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139 changes: 139 additions & 0 deletions SexyProxy.Emit.Tests/RefParametersTest.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,139 @@
using System.Linq;
using System.Threading.Tasks;
using NUnit.Framework;

namespace SexyProxy.Emit.Tests
{
[TestFixture]
public class RefParametersTest
{
private string refParam;
private string outParam;
private string resultString;
private ITestClassWithRefParameters testClassWithRefParameters;
private ITestClassWithRefParameters proxy;
private MyTestRefClass myTestRefClass = new MyTestRefClass { Value = 10 };

[SetUp]
protected void SetUp()
{
refParam = "RefParam";
testClassWithRefParameters = new TestClassWithRefParameters();
proxy = Proxy.CreateProxy(testClassWithRefParameters, async invocation =>
{
var result = await invocation.Proceed();
return result;
});

}

[Test]
public void DoSomething()
{
proxy.DoSomething(1, ref refParam, out outParam);
ParametersAssert();
}

[Test]
public void GetSomeString()
{
resultString = proxy.GetSomeString(1, ref refParam, out outParam);
ParametersAssert();
ResultStringAssert();
}

[Test]
public void DoSomethingWithClassByRef()
{
proxy.DoSomethingWithClassByRef(ref myTestRefClass);
Assert.AreEqual(myTestRefClass.Value, 0);
}

[Test]
public void GetValueFromClassWithRef()
{
var result = proxy.GetValueFromClassWithRef(ref myTestRefClass);
Assert.AreEqual(myTestRefClass.Value, 0);
Assert.AreEqual(result, 0);
}

[Test]
public async void DoSomethingAsync()
{
resultString = await proxy.DoSomethingAsync();
ResultStringAssert();
}


private void ResultStringAssert()
{
Assert.AreEqual("ResultString", resultString);
}

private void ParametersAssert()
{
Assert.AreEqual("OutParam", outParam);
Assert.AreEqual("RefParamModified", refParam);
}

public interface ITestClassWithRefParameters
{
void DoSomething(int simpleParam, ref string refParam, out string outParam);

string GetSomeString(int simpleParam, ref string refParam, out string outParam);

void DoSomethingWithClassByRef(ref MyTestRefClass refClass);

int GetValueFromClassWithRef(ref MyTestRefClass refClass);

Task<string> DoSomethingAsync();
}

private class TestClassWithRefParameters : ITestClassWithRefParameters
{
public void DoSomething(int simpleParam, ref string refParam, out string outParam)
{
ModifyRefParameters(ref refParam, out outParam);
}

public string GetSomeString(int simpleParam, ref string refParam, out string outParam)
{
ModifyRefParameters(ref refParam, out outParam);
return "ResultString";
}

public void DoSomethingWithClassByRef(ref MyTestRefClass refClass)
{
refClass = new MyTestRefClass { Value = 0};
}

public int GetValueFromClassWithRef(ref MyTestRefClass refClass)
{
DoSomethingWithClassByRef(ref refClass);
return refClass.Value;
}

public async Task<string> DoSomethingAsync()
{
await GetValueAsync();
return "ResultString";
}

private Task GetValueAsync()
{
return Task.CompletedTask;
}

private void ModifyRefParameters(ref string refParam, out string outParam)
{
refParam+="Modified";
outParam = "OutParam";
}
}

public class MyTestRefClass
{
public int Value { get; set; }
}
}
}
3 changes: 2 additions & 1 deletion SexyProxy.Emit.Tests/SexyProxy.Emit.Tests.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
<AppDesignerFolder>Properties</AppDesignerFolder>
<RootNamespace>SexyProxy.Emit.Tests</RootNamespace>
<AssemblyName>SexyProxy.Emit.Tests</AssemblyName>
<TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
<TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
<FileAlignment>512</FileAlignment>
<TargetFrameworkProfile />
</PropertyGroup>
Expand Down Expand Up @@ -58,6 +58,7 @@
<Compile Include="PredicatedProxyTests.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="ReadMeTests.cs" />
<Compile Include="RefParametersTest.cs" />
</ItemGroup>
<ItemGroup>
<None Include="packages.config" />
Expand Down
14 changes: 12 additions & 2 deletions SexyProxy.Emit/EmitExtensions.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ public static class EmitExtensions
new[] { typeof(string), typeof(BindingFlags), typeof(Binder), typeof(Type[]), typeof(ParameterModifier[]) });
private static readonly MethodInfo typeGetProperty = typeof(Type).GetMethod("GetProperty",
new[] { typeof(string), typeof(BindingFlags), typeof(Binder), typeof(Type), typeof(Type[]), typeof(ParameterModifier[]) });
private static readonly MethodInfo makeByRefTypeMethod = typeof(Type).GetMethod("MakeByRefType");

public static void EmitDefaultBaseConstructorCall(this ILGenerator il, Type baseType)
{
Expand All @@ -29,8 +30,17 @@ public static void EmitDefaultBaseConstructorCall(this ILGenerator il, Type base

public static void LoadType(this ILGenerator il, Type type)
{
il.Emit(OpCodes.Ldtoken, type);
il.Emit(OpCodes.Call, getTypeFromRuntimeHandleMethod);
if (type.IsByRef)
{
il.Emit(OpCodes.Ldtoken, type.GetElementType());
il.Emit(OpCodes.Call, getTypeFromRuntimeHandleMethod);
il.Emit(OpCodes.Callvirt, makeByRefTypeMethod);
}
else
{
il.Emit(OpCodes.Ldtoken, type);
il.Emit(OpCodes.Call, getTypeFromRuntimeHandleMethod);
}
}

public static void StoreMethodInfo(this ILGenerator il, FieldBuilder staticField, MethodInfo method)
Expand Down