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DefaultBinder named parameter support skipping default parameters (#7…
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src/libraries/System.Reflection/tests/DefaultBinderTests.cs
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| Original file line number | Diff line number | Diff line change |
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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. | ||
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| using Xunit; | ||
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| namespace System.Reflection.Tests | ||
| { | ||
| public class DefaultBinderTests | ||
| { | ||
| private const BindingFlags flags = BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static; | ||
| private const BindingFlags invokeFlags = flags | BindingFlags.InvokeMethod | BindingFlags.OptionalParamBinding; | ||
| private static Binder binder = Type.DefaultBinder; | ||
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| [Fact] | ||
| public static void DefaultBinderAllUnspecifiedParametersHasDefaultsTest() | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { "value" }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, new[] { "par1" }, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("MethodMoreParameters", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNamedParametersInOrderTest() | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { "value", 1 }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, new[] { "param1", "param2" }, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("SampleMethod", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNamedParametersOutOrderTest() | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { 1, "value" }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, new[] { "param2", "param1" }, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("SampleMethod", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNamedParametersSkippedOrderTest() | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { "value", true }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, new[] { "param1", "param3" }, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("SampleMethod", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNamedParametersMissingRequiredParameterThrowsMissingMethodException() | ||
| { | ||
| MethodInfo[] methods = new MethodInfo[] { typeof(Sample).GetMethod("NoDefaultParameterMethod") }; | ||
| object[] methodArgs = new object[] { "value", 1 }; | ||
| Assert.Throws<MissingMethodException>(() => binder.BindToMethod(flags, methods, ref methodArgs, null, null, new[] { "param1", "param2" }, out var _)); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNamedParametersMixedOrderNoDefaults () | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { true, "value", 3.14, 1 }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, new[] { "param3", "param1", "param4", "param2" }, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("NoDefaultParameterMethod", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNoNamedParametersInOrderNoDefaults() | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { "value", 1, true, 3.14 }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, null, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("NoDefaultParameterMethod", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNoNamedParametersNoArgumentsAllDefaults() | ||
| { | ||
| MethodInfo[] methods = typeof(Test).GetMethods(); | ||
| object[] methodArgs = new object[] { null, null }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, null, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("SampleMethod", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNoNamedParametersOutOrderThrows() | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { true, "value", 3.14, 1 }; | ||
| Assert.Throws<MissingMethodException>(() => binder.BindToMethod(flags, methods, ref methodArgs, null, null, null, out var _)); | ||
| } | ||
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| [Fact] | ||
| public static void DefaultBinderNamedParametersSkippedAndOutOfOrderTest() | ||
| { | ||
| MethodInfo[] methods = typeof(Sample).GetMethods(); | ||
| object[] methodArgs = new object[] { 8, "value" }; | ||
| MethodBase method = binder.BindToMethod(flags, methods, ref methodArgs, null, null, new[] { "par5", "par1" }, out var _); | ||
| Assert.NotNull(method); | ||
| Assert.Equal("MethodMoreParameters", method.Name); | ||
| } | ||
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| [Fact] | ||
| public static void InvokeWithNamedParameters1st2ndTest() | ||
| { | ||
| Type t = typeof(Sample); | ||
| object instance = Activator.CreateInstance(t); | ||
| object[] methodArgs = new object[] { "value", 3 }; | ||
| string[] paramNames = new string[] { "param1", "param2" }; | ||
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| int result = (int)t.InvokeMember("SampleMethod", invokeFlags, null, instance, methodArgs, null, null, paramNames); | ||
| Assert.Equal(3, result); | ||
| } | ||
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| [Fact] | ||
| public static void InvokeWithNamedParameters1st3rd() | ||
| { | ||
| Type t = typeof(Sample); | ||
| object instance = Activator.CreateInstance(t); | ||
| object[] methodArgs = new object[] { "value", true }; | ||
| string[] paramNames = new string[] { "param1", "param3" }; | ||
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| int result = (int)t.InvokeMember("SampleMethod", invokeFlags, null, instance, methodArgs, null, null, paramNames); | ||
| Assert.Equal(7, result); | ||
| } | ||
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| [Fact] | ||
| public static void InvokeWithNamedParameters1st4th() | ||
| { | ||
| Type t = typeof(Sample); | ||
| object instance = Activator.CreateInstance(t); | ||
| object[] methodArgs = new object[] { "value", true }; | ||
| string[] paramNames = new string[] { "param1", "param4" }; | ||
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| int result = (int)t.InvokeMember("AnotherMethod", invokeFlags, null, instance, methodArgs, null, null, paramNames); | ||
| Assert.Equal(7, result); | ||
| } | ||
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| [Fact] | ||
| public static void InvokeWithNamedParameters4th1st() | ||
| { | ||
| Type t = typeof(Sample); | ||
| object instance = Activator.CreateInstance(t); | ||
| object[] methodArgs = new object[] { true, "value" }; | ||
| string[] paramNames = new string[] { "param4", "param1" }; | ||
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| int result = (int)t.InvokeMember("AnotherMethod", invokeFlags, null, instance, methodArgs, null, null, paramNames); | ||
| Assert.Equal(7, result); | ||
| } | ||
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| [Fact] | ||
| public static void InvokeWithNamedParametersOutOfOrder() | ||
| { | ||
| Type t = typeof(Sample); | ||
| object instance = Activator.CreateInstance(t); | ||
| object[] methodArgs = new object[] { 3, "value2", true, "value" }; | ||
| string[] paramNames = new string[] { "param3", "param2", "param4", "param1" }; | ||
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| int result = (int)t.InvokeMember("AnotherMethod", invokeFlags, null, instance, methodArgs, null, null, paramNames); | ||
| Assert.Equal(8, result); | ||
| } | ||
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| public class Test | ||
| { | ||
| public void TestMethod(int param1) { } | ||
| public void SampleMethod(int param2 = 2, bool param3 = false) { } | ||
| } | ||
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| public class Sample | ||
| { | ||
| public static int SampleMethod(int param1 = 2) | ||
| { | ||
| return 1; | ||
| } | ||
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| public static int SampleMethod(int param2 = 2, bool param3 = false) | ||
| { | ||
| return 1; | ||
| } | ||
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| public void NoDefaultParameterMethod(string param1, int param2, bool param3, double param4) { } | ||
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| public static int SampleMethod(string param1, int param2 = 2, bool param3 = false) | ||
| { | ||
| if (param3) | ||
| { | ||
| return param2 + param1.Length; | ||
| } | ||
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| return param2; | ||
| } | ||
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| public int AnotherMethod(string param1, string param2 = "", int param3 = 2, bool param4 = false) | ||
| { | ||
| if (param4) | ||
| { | ||
| return param3 + param1.Length; | ||
| } | ||
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| return param3; | ||
| } | ||
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| public void MethodMoreParameters(string par1, string par2 = "", int par3 = 2, bool par4 = false, short par5 = 1) { } | ||
| } | ||
| } | ||
| } |
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