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DelegateExpressionTest.cs
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DelegateExpressionTest.cs
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// Copyright 2012-2017 Dmitry Kischenko
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
using System;
using xFunc.Maths.Expressions;
using xFunc.Maths.Expressions.Collections;
using Xunit;
namespace xFunc.Tests.Expressionss
{
public class DelegateExpressionTest
{
[Fact]
public void ExecuteTest1()
{
var parameters = new ParameterCollection()
{
new Parameter("x", 10)
};
var func = new DelegateExpression(p => (double)p.Variables["x"] + 1);
var result = func.Execute(parameters);
Assert.Equal(11.0, result);
}
[Fact]
public void ExecuteTest2()
{
var func = new DelegateExpression(p => 10.0);
var result = func.Execute(null);
Assert.Equal(10.0, result);
}
[Fact]
public void ExecuteTest3()
{
var uf1 = new UserFunction("func", new[] { new Variable("x") }, 1);
var func = new DelegateExpression(p => (double)p.Variables["x"] == 10 ? 0 : 1);
var funcs = new FunctionCollection
{
{ uf1, func }
};
var uf2 = new UserFunction("func", new[] { new Number(12) }, 1);
var result = uf2.Execute(new ExpressionParameters(funcs));
Assert.Equal(1, result);
}
[Fact]
public void ExecuteTest4()
{
var func = new DelegateExpression(p => 1.0);
var result = func.Execute();
Assert.Equal(1.0, result);
}
[Fact]
public void EqualRefTest()
{
var exp = new DelegateExpression(p => 1.0);
Assert.True(exp.Equals(exp));
}
[Fact]
public void EqualRefNullTest()
{
var exp = new DelegateExpression(p => 1.0);
Assert.False(exp.Equals(null));
}
[Fact]
public void EqualDiffTypeTest()
{
var exp1 = new DelegateExpression(p => 1.0);
var exp2 = new Number(2);
Assert.False(exp1.Equals(exp2));
}
[Fact]
public void EqualSameTest()
{
Func<ExpressionParameters, object> d = p => 1.0;
var exp1 = new DelegateExpression(d);
var exp2 = new DelegateExpression(d);
Assert.True(exp1.Equals(exp2));
}
[Fact]
public void EqualDiffTest()
{
var exp1 = new DelegateExpression(p => 1.0);
var exp2 = new DelegateExpression(p => 2.0);
Assert.False(exp1.Equals(exp2));
}
[Fact]
public void CloneTest()
{
Assert.Throws<NotSupportedException>(() => new DelegateExpression(x => null).Clone());
}
}
}