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AssemblySavePropertyBuilderTests.cs
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AssemblySavePropertyBuilderTests.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using Xunit;
namespace System.Reflection.Emit.Tests
{
[ConditionalClass(typeof(PlatformDetection), nameof(PlatformDetection.IsNotBrowser))]
public class AssemblySavePropertyBuilderTests
{
[Fact]
public void SetPropertyAccessorsAndOtherValues()
{
using (TempFile file = TempFile.Create())
{
AssemblyBuilder ab = AssemblySaveTools.PopulateAssemblyBuilderTypeBuilderAndSaveMethod(out TypeBuilder type, out MethodInfo saveMethod);
FieldBuilder field = type.DefineField("TestField", typeof(int), FieldAttributes.Private);
PropertyBuilder property = type.DefineProperty("TestProperty", PropertyAttributes.SpecialName | PropertyAttributes.HasDefault, typeof(int), null);
MethodBuilder getMethod = type.DefineMethod("GetMethod", MethodAttributes.Public | MethodAttributes.HideBySig, typeof(int), null);
MethodBuilder setMethod = type.DefineMethod("SetMethod", MethodAttributes.Private | MethodAttributes.SpecialName | MethodAttributes.HideBySig, typeof(void), [typeof(int)]);
MethodBuilder otherMethod = type.DefineMethod("OtherMethod", MethodAttributes.Family, typeof(int), [typeof(int)]);
CustomAttributeBuilder customAttrBuilder = new CustomAttributeBuilder(typeof(IntPropertyAttribute).GetConstructor([typeof(int)]), [9]);
property.SetCustomAttribute(customAttrBuilder);
property.SetConstant(5);
ILGenerator getterLGenerator = getMethod.GetILGenerator();
getterLGenerator.Emit(OpCodes.Ldarg_0);
getterLGenerator.Emit(OpCodes.Ldfld, field);
getterLGenerator.Emit(OpCodes.Ret);
property.SetGetMethod(getMethod);
ILGenerator setterILGenerator = setMethod.GetILGenerator();
setterILGenerator.Emit(OpCodes.Ldarg_0);
setterILGenerator.Emit(OpCodes.Ldarg_1);
setterILGenerator.Emit(OpCodes.Stfld, field);
setterILGenerator.Emit(OpCodes.Ret);
property.SetSetMethod(setMethod);
ILGenerator otherILGenerator = otherMethod.GetILGenerator();
otherILGenerator.Emit(OpCodes.Ldarg_0);
otherILGenerator.Emit(OpCodes.Ldarg_1);
otherILGenerator.Emit(OpCodes.Ret);
property.AddOtherMethod(otherMethod);
type.CreateType();
saveMethod.Invoke(ab, new [] { file.Path });
Assembly assemblyFromDisk = AssemblySaveTools.LoadAssemblyFromPath(file.Path);
Type typeFromDisk = assemblyFromDisk.Modules.First().GetType("MyType");
PropertyInfo propertyFromDisk = typeFromDisk.GetProperty("TestProperty", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
MethodInfo getMethodFromFile = propertyFromDisk.GetGetMethod(true);
MethodInfo setMethodFromFile = propertyFromDisk.GetSetMethod(true);
Assert.Equal(getMethod.Name, getMethodFromFile.Name);
Assert.Equal(setMethod.Name, setMethodFromFile.Name);
// Not sure how other methods should have loaded/tested
// 'propertyFromDisk.GetAccessors(true)' did not return other method
Assert.NotNull(typeFromDisk.GetMethod("OtherMethod", BindingFlags.NonPublic | BindingFlags.Instance));
Assert.True(property.CanRead);
Assert.True(property.CanWrite);
Assert.Equal(property.CanRead, propertyFromDisk.CanRead);
Assert.Equal(property.CanWrite, propertyFromDisk.CanWrite);
Assert.Equal(property.Attributes, propertyFromDisk.Attributes);
Assert.Equal(property.DeclaringType.FullName, propertyFromDisk.DeclaringType.FullName);
IList<CustomAttributeData> caData = propertyFromDisk.GetCustomAttributesData();
Assert.Equal(1, caData.Count);
Assert.Equal(typeof(IntPropertyAttribute).FullName, caData[0].AttributeType.FullName);
Assert.Equal(1, caData[0].ConstructorArguments.Count);
Assert.Equal(9, caData[0].ConstructorArguments[0].Value);
}
}
[Fact]
public void SetVariousCustomAttributes_ForProperty()
{
using (TempFile file = TempFile.Create())
{
int expectedValue = 9;
ConstructorInfo con = typeof(IntPropertyAttribute).GetConstructor([typeof(int)]);
CustomAttributeBuilder customAttrBuilder = new CustomAttributeBuilder(con, [expectedValue]);
PropertyInfo prop = typeof(CustomAttributeBuilder).GetProperty("Data", BindingFlags.NonPublic | BindingFlags.Instance);
byte[] binaryData = (byte[])prop.GetValue(customAttrBuilder, null);
AssemblyBuilder ab = AssemblySaveTools.PopulateAssemblyBuilderTypeBuilderAndSaveMethod(out TypeBuilder type, out MethodInfo saveMethod);
PropertyBuilder property = type.DefineProperty("TestProperty", PropertyAttributes.HasDefault, typeof(int), null);
property.SetCustomAttribute(con, binaryData);
property.SetCustomAttribute(new CustomAttributeBuilder(typeof(SpecialNameAttribute).GetConstructor(Type.EmptyTypes), []));
property.SetCustomAttribute(new CustomAttributeBuilder(typeof(MaybeNullAttribute).GetConstructor(Type.EmptyTypes), []));
property.SetConstant(99);
MethodBuilder method = type.DefineMethod("TestMethod", MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig, typeof(int), null);
ILGenerator methodILGenerator = method.GetILGenerator();
methodILGenerator.Emit(OpCodes.Ldarg_0);
methodILGenerator.Emit(OpCodes.Ret);
property.SetGetMethod(method);
type.CreateType();
saveMethod.Invoke(ab, [file.Path]);
Assembly assemblyFromDisk = AssemblySaveTools.LoadAssemblyFromPath(file.Path);
Type typeFromDisk = assemblyFromDisk.Modules.First().GetType("MyType");
PropertyInfo propertyFromDisk = typeFromDisk.GetProperty("TestProperty", BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic);
Assert.True(propertyFromDisk.Attributes.HasFlag(PropertyAttributes.SpecialName));
IList<CustomAttributeData> attributes = propertyFromDisk.GetCustomAttributesData();
Assert.Equal(2, attributes.Count);
if (typeof(MaybeNullAttribute).FullName == attributes[0].AttributeType.FullName)
{
Assert.Equal(0, attributes[0].ConstructorArguments.Count);
Assert.Equal(1, attributes[1].ConstructorArguments.Count);
Assert.Equal(typeof(IntPropertyAttribute).FullName, attributes[1].AttributeType.FullName);
Assert.Equal(expectedValue, attributes[1].ConstructorArguments[0].Value);
}
else
{
Assert.Equal(0, attributes[1].ConstructorArguments.Count);
Assert.Equal(1, attributes[0].ConstructorArguments.Count);
Assert.Equal(typeof(IntPropertyAttribute).FullName, attributes[0].AttributeType.FullName);
Assert.Equal(expectedValue, attributes[0].ConstructorArguments[0].Value);
}
Assert.Empty(attributes[0].NamedArguments);
Assert.Empty(attributes[1].NamedArguments);
}
}
public static IEnumerable<object[]> SetConstant_TestData()
{
yield return new object[] { typeof(int), 10 };
yield return new object[] { typeof(bool), true };
yield return new object[] { typeof(sbyte), (sbyte)10 };
yield return new object[] { typeof(short), (short)10 };
yield return new object[] { typeof(long), 10L };
yield return new object[] { typeof(byte), (byte)10 };
yield return new object[] { typeof(ushort), (ushort)10 };
yield return new object[] { typeof(uint), 10u };
yield return new object[] { typeof(ulong), 10UL };
yield return new object[] { typeof(float), 10f };
yield return new object[] { typeof(double), 10d };
yield return new object[] { typeof(DateTime), DateTime.Now };
yield return new object[] { typeof(char), 'a' };
yield return new object[] { typeof(string), "a" };
yield return new object[] { typeof(PropertyBuilderTest11.Colors), PropertyBuilderTest11.Colors.Blue };
yield return new object[] { typeof(object), null };
yield return new object[] { typeof(object), "a" };
}
[Theory]
[MemberData(nameof(SetConstant_TestData))]
public void SetConstantVariousValues(Type returnType, object defaultValue)
{
AssemblySaveTools.PopulateAssemblyBuilderTypeBuilderAndSaveMethod(out TypeBuilder type, out MethodInfo _);
PropertyBuilder property = type.DefineProperty("TestProperty", PropertyAttributes.HasDefault, returnType, null);
property.SetConstant(defaultValue);
Assert.Equal(defaultValue, property.GetConstantValue());
}
[Fact]
public void SetCustomAttribute_ConstructorInfo_ByteArray_NullConstructorInfo_ThrowsArgumentNullException()
{
AssemblySaveTools.PopulateAssemblyBuilderTypeBuilderAndSaveMethod(out TypeBuilder type, out MethodInfo _);
PropertyBuilder property = type.DefineProperty("TestProperty", PropertyAttributes.HasDefault, typeof(int), null);
AssertExtensions.Throws<ArgumentNullException>("con", () => property.SetCustomAttribute(null, new byte[6]));
}
[Fact]
public void Set_NullValue_ThrowsArgumentNullException()
{
AssemblySaveTools.PopulateAssemblyBuilderTypeBuilderAndSaveMethod(out TypeBuilder type, out MethodInfo _);
PropertyBuilder property = type.DefineProperty("TestProperty", PropertyAttributes.None, typeof(int), null);
AssertExtensions.Throws<ArgumentNullException>("mdBuilder", () => property.SetGetMethod(null));
AssertExtensions.Throws<ArgumentNullException>("mdBuilder", () => property.SetSetMethod(null));
AssertExtensions.Throws<ArgumentNullException>("mdBuilder", () => property.AddOtherMethod(null));
AssertExtensions.Throws<ArgumentNullException>("customBuilder", () => property.SetCustomAttribute(null));
}
[Fact]
public void Set_WhenTypeAlreadyCreated_ThrowsInvalidOperationException()
{
AssemblySaveTools.PopulateAssemblyBuilderTypeBuilderAndSaveMethod(out TypeBuilder type, out MethodInfo _);
FieldBuilder field = type.DefineField("TestField", typeof(int), FieldAttributes.Private);
PropertyBuilder property = type.DefineProperty("TestProperty", PropertyAttributes.HasDefault, typeof(int), null);
MethodAttributes getMethodAttributes = MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.HideBySig;
MethodBuilder method = type.DefineMethod("TestMethod", getMethodAttributes, typeof(int), null);
AssertExtensions.Throws<ArgumentException>(() => property.SetConstant((decimal)10));
CustomAttributeBuilder customAttrBuilder = new CustomAttributeBuilder(typeof(IntPropertyAttribute).GetConstructor([typeof(int)]), [10]);
type.CreateType();
Assert.Throws<InvalidOperationException>(() => property.SetGetMethod(method));
Assert.Throws<InvalidOperationException>(() => property.SetSetMethod(method));
Assert.Throws<InvalidOperationException>(() => property.AddOtherMethod(method));
Assert.Throws<InvalidOperationException>(() => property.SetConstant(1));
Assert.Throws<InvalidOperationException>(() => property.SetCustomAttribute(customAttrBuilder));
}
[Fact]
public void SetConstant_ValidationThrows()
{
AssemblySaveTools.PopulateAssemblyBuilderTypeBuilderAndSaveMethod(out TypeBuilder type, out MethodInfo _);
FieldBuilder field = type.DefineField("TestField", typeof(int), FieldAttributes.Private);
PropertyBuilder property = type.DefineProperty("TestProperty", PropertyAttributes.HasDefault, typeof(int), null);
AssertExtensions.Throws<ArgumentException>(() => property.SetConstant((decimal)10));
AssertExtensions.Throws<ArgumentException>(() => property.SetConstant(null));
type.CreateType();
Assert.Throws<InvalidOperationException>(() => property.SetConstant(1));
}
}
}