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Merge pull request #3763 from bartdesmet/Issue-3758
Fixing expression interpreter for Increment and Decrement nodes
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181
src/System.Linq.Expressions/tests/Unary/UnaryDecrementNullableTests.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,181 @@ | ||
| // Copyright (c) Microsoft. All rights reserved. | ||
| // Licensed under the MIT license. See LICENSE file in the project root for full license information. | ||
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|
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| using System; | ||
| using System.Linq; | ||
| using System.Linq.Expressions; | ||
| using Xunit; | ||
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| namespace Tests.ExpressionCompiler.Unary | ||
| { | ||
| public static unsafe class UnaryDecrementNullableTests | ||
| { | ||
| #region Test methods | ||
|
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| [Fact] | ||
| public static void CheckUnaryDecrementNullableShortTest() | ||
| { | ||
| short?[] values = new short?[] { null, 0, 1, -1, short.MinValue, short.MaxValue }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableShort(values[i]); | ||
| } | ||
| } | ||
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| [Fact] | ||
| public static void CheckUnaryDecrementNullableUShortTest() | ||
| { | ||
| ushort?[] values = new ushort?[] { null, 0, 1, ushort.MaxValue }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableUShort(values[i]); | ||
| } | ||
| } | ||
|
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| [Fact] | ||
| public static void CheckUnaryDecrementNullableIntTest() | ||
| { | ||
| int?[] values = new int?[] { null, 0, 1, -1, int.MinValue, int.MaxValue }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableInt(values[i]); | ||
| } | ||
| } | ||
|
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| [Fact] | ||
| public static void CheckUnaryDecrementNullableUIntTest() | ||
| { | ||
| uint?[] values = new uint?[] { null, 0, 1, uint.MaxValue }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableUInt(values[i]); | ||
| } | ||
| } | ||
|
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| [Fact] | ||
| public static void CheckUnaryDecrementNullableLongTest() | ||
| { | ||
| long?[] values = new long?[] { null, 0, 1, -1, long.MinValue, long.MaxValue }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableLong(values[i]); | ||
| } | ||
| } | ||
|
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| [Fact] | ||
| public static void CheckUnaryDecrementNullableULongTest() | ||
| { | ||
| ulong?[] values = new ulong?[] { null, 0, 1, ulong.MaxValue }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableULong(values[i]); | ||
| } | ||
| } | ||
|
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| [Fact] | ||
| public static void CheckDecrementFloatTest() | ||
| { | ||
| float?[] values = new float?[] { null, 0, 1, -1, float.MinValue, float.MaxValue, float.Epsilon, float.NegativeInfinity, float.PositiveInfinity, float.NaN }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableFloat(values[i]); | ||
| } | ||
| } | ||
|
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| [Fact] | ||
| public static void CheckDecrementDoubleTest() | ||
| { | ||
| double?[] values = new double?[] { null, 0, 1, -1, double.MinValue, double.MaxValue, double.Epsilon, double.NegativeInfinity, double.PositiveInfinity, double.NaN }; | ||
| for (int i = 0; i < values.Length; i++) | ||
| { | ||
| VerifyDecrementNullableDouble(values[i]); | ||
| } | ||
| } | ||
|
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| #endregion | ||
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| #region Test verifiers | ||
|
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| private static void VerifyDecrementNullableShort(short? value) | ||
| { | ||
| Expression<Func<short?>> e = | ||
| Expression.Lambda<Func<short?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(short?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<short?> f = e.Compile(); | ||
| Assert.Equal((short?)(--value), f()); | ||
| } | ||
|
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| private static void VerifyDecrementNullableUShort(ushort? value) | ||
| { | ||
| Expression<Func<ushort?>> e = | ||
| Expression.Lambda<Func<ushort?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(ushort?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<ushort?> f = e.Compile(); | ||
| Assert.Equal((ushort?)(--value), f()); | ||
| } | ||
|
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| private static void VerifyDecrementNullableInt(int? value) | ||
| { | ||
| Expression<Func<int?>> e = | ||
| Expression.Lambda<Func<int?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(int?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<int?> f = e.Compile(); | ||
| Assert.Equal((int?)(--value), f()); | ||
| } | ||
|
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| private static void VerifyDecrementNullableUInt(uint? value) | ||
| { | ||
| Expression<Func<uint?>> e = | ||
| Expression.Lambda<Func<uint?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(uint?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<uint?> f = e.Compile(); | ||
| Assert.Equal((uint?)(--value), f()); | ||
| } | ||
|
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| private static void VerifyDecrementNullableLong(long? value) | ||
| { | ||
| Expression<Func<long?>> e = | ||
| Expression.Lambda<Func<long?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(long?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<long?> f = e.Compile(); | ||
| Assert.Equal((long?)(--value), f()); | ||
| } | ||
|
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| private static void VerifyDecrementNullableULong(ulong? value) | ||
| { | ||
| Expression<Func<ulong?>> e = | ||
| Expression.Lambda<Func<ulong?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(ulong?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<ulong?> f = e.Compile(); | ||
| Assert.Equal((ulong?)(--value), f()); | ||
| } | ||
|
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| private static void VerifyDecrementNullableFloat(float? value) | ||
| { | ||
| Expression<Func<float?>> e = | ||
| Expression.Lambda<Func<float?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(float?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<float?> f = e.Compile(); | ||
| Assert.Equal((float?)(--value), f()); | ||
| } | ||
|
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| private static void VerifyDecrementNullableDouble(double? value) | ||
| { | ||
| Expression<Func<double?>> e = | ||
| Expression.Lambda<Func<double?>>( | ||
| Expression.Decrement(Expression.Constant(value, typeof(double?))), | ||
| Enumerable.Empty<ParameterExpression>()); | ||
| Func<double?> f = e.Compile(); | ||
| Assert.Equal((double?)(--value), f()); | ||
| } | ||
|
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| #endregion | ||
| } | ||
| } |
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