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GeneratorTest.cs
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GeneratorTest.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using AutoFixture;
using AutoFixture.Kernel;
using TestTypeFoundation;
using Xunit;
namespace AutoFixtureUnitTest
{
public abstract class GeneratorTest<T>
{
[Theory, ClassData(typeof(CountTestCases))]
public void StronglyTypedEnumerationYieldsNonDefaultValues(int count)
{
// Arrange
var sut = new Generator<T>(new Fixture());
// Act
var actual = sut.Take(count);
// Assert
Assert.Equal(count, actual.Count(x => !object.Equals(default(T), x)));
}
[Theory, ClassData(typeof(CountTestCases))]
public void StronglyTypedEnumerationYieldsUniqueValues(int count)
{
// Arrange
var sut = new Generator<T>(new Fixture());
// Act
var actual = sut.Take(count);
// Assert
Assert.Equal(count, actual.Distinct().Count());
}
[Theory, ClassData(typeof(CountTestCases))]
public void WeaklyTypedEnumerationYieldsNonDefaultValues(int count)
{
// Arrange
IEnumerable sut = new Generator<T>(new Fixture());
// Act
var actual = sut.OfType<T>().Take(count);
// Assert
Assert.Equal(count, actual.Count(x => !object.Equals(default(T), x)));
}
[Theory, ClassData(typeof(CountTestCases))]
public void WeaklyTypedEnumerationYieldsUniqueValues(int count)
{
// Arrange
IEnumerable sut = new Generator<T>(new Fixture());
// Act
var actual = sut.OfType<T>().Take(count);
// Assert
Assert.Equal(count, actual.Distinct().Count());
}
[Fact]
public void ConstructWithNullSpecimenBuilderThrows()
{
Assert.Throws<ArgumentNullException>(() =>
new Generator<T>((ISpecimenBuilder)null));
}
[Theory, ClassData(typeof(CountTestCases))]
public void ConstructedWithSpecimenBuilderStronglyTypedEnumerationYieldsNonDefaultValues(int count)
{
// Arrange
var builder = new Fixture();
var sut = new Generator<T>(builder);
// Act
var actual = sut.OfType<T>().Take(count);
// Assert
Assert.Equal(
count,
actual.Count(x => !object.Equals(default(T), x)));
}
[Theory, ClassData(typeof(CountTestCases))]
public void ConstructedWithSpecimenBuilderWeaklyTypedEnumerationYieldsNonDefaultValues(int count)
{
// Arrange
var builder = new Fixture();
IEnumerable sut = new Generator<T>(builder);
// Act
var actual = sut.OfType<T>().Take(count);
// Assert
Assert.Equal(
count,
actual.Count(x => !object.Equals(default(T), x)));
}
[Theory, ClassData(typeof(CountTestCases))]
public void ConstructedWithSpecimenBuilderStronglyTypedEnumerationYieldsDistinctValues(int count)
{
// Arrange
var builder = new Fixture();
var sut = new Generator<T>(builder);
// Act
var actual = sut.OfType<T>().Take(count);
// Assert
Assert.Equal(
count,
actual.Distinct().Count());
}
[Theory, ClassData(typeof(CountTestCases))]
public void ConstructedWithSpecimenBuilderWeaklyTypedEnumerationYieldsDistinctValues(int count)
{
// Arrange
var builder = new Fixture();
IEnumerable sut = new Generator<T>(builder);
// Act
var actual = sut.OfType<T>().Take(count);
// Assert
Assert.Equal(
count,
actual.Distinct().Count());
}
}
internal class CountTestCases : IEnumerable<object[]>
{
public IEnumerator<object[]> GetEnumerator()
{
yield return new object[] { 0 };
yield return new object[] { 1 };
yield return new object[] { 2 };
yield return new object[] { 3 };
yield return new object[] { 20 };
}
IEnumerator IEnumerable.GetEnumerator()
{
return this.GetEnumerator();
}
}
public class GeneratorTestOfObject : GeneratorTest<object>
{
}
public class GeneratorTestOfString : GeneratorTest<string>
{
}
public class GeneratorTestOfInt32 : GeneratorTest<int>
{
}
public class GeneratorTestOfGuid : GeneratorTest<Guid>
{
}
public class GeneratorTestOfNetPipeStyleUriParser : GeneratorTest<ConcreteType>
{
}
}