public void CreateReturnsCorrectResultWithMinimumMaximumOnMultipleCall(
double minimum,
double maximum)
{
// Fixture setup
var numbers = new Random();
var request = new RangedNumberRequest(
typeof(double),
minimum,
maximum);
var context = new DelegatingSpecimenContext
{
OnResolve = r =>
{
Assert.Equal(request.OperandType, r);
return((double)numbers.Next());
}
};
var sut = new RangedNumberGenerator();
// Exercise system
var result = Enumerable
.Range(0, 33)
.Select(x => sut.Create(request, context))
.Cast <double>();
// Verify outcome
Assert.True(
result.All(x => x >= minimum && x <= maximum));
// Teardown
}
public void CreateWithNullContextThrows()
{
// Arrange
var sut = new RangedNumberGenerator();
var dummyRequest = new object();
// Act & assert
Assert.Throws <ArgumentNullException>(() => sut.Create(dummyRequest, null));
}
public void SutIsSpecimenBuilder()
{
// Arrange
// Act
var sut = new RangedNumberGenerator();
// Assert
Assert.IsAssignableFrom <ISpecimenBuilder>(sut);
}
public void CreateWithNullContextThrows()
{
// Fixture setup
var sut = new RangedNumberGenerator();
var dummyRequest = new object();
// Exercise system and verify outcome
Assert.Throws <ArgumentNullException>(() => sut.Create(dummyRequest, null));
// Teardown
}
public void SutIsSpecimenBuilder()
{
// Fixture setup
// Exercise system
var sut = new RangedNumberGenerator();
// Verify outcome
Assert.IsAssignableFrom <ISpecimenBuilder>(sut);
// Teardown
}
public void CreateWithNullRequestReturnsCorrectResult()
{
// Arrange
var sut = new RangedNumberGenerator();
var dummyContext = new DelegatingSpecimenContext();
// Act
var result = sut.Create(null, dummyContext);
// Assert
Assert.Equal(new NoSpecimen(), result);
}
public void CreateWithNullRequestReturnsCorrectResult()
{
// Fixture setup
var sut = new RangedNumberGenerator();
var dummyContext = new DelegatingSpecimenContext();
// Exercise system
var result = sut.Create(null, dummyContext);
// Verify outcome
Assert.Equal(new NoSpecimen(), result);
// Teardown
}
public void ReturnsSameNumberWhenMinimumAndMaximumAreSame(Type requestType)
{
// Arrange
var range = Convert.ChangeType(42, requestType, CultureInfo.InvariantCulture);
var sut = new RangedNumberGenerator();
var request = new RangedNumberRequest(requestType, range, range);
var dummyContext = new DelegatingSpecimenContext();
// Act
var result = sut.Create(request, dummyContext);
// Assert
Assert.Equal(range, result);
}
public void CreateWithAnonymousRequestReturnsCorrectResult()
{
// Fixture setup
var sut = new RangedNumberGenerator();
var dummyRequest = new object();
var dummyContext = new DelegatingSpecimenContext();
// Exercise system
var result = sut.Create(dummyRequest, dummyContext);
// Verify outcome
#pragma warning disable 618
Assert.Equal(new NoSpecimen(dummyRequest), result);
#pragma warning restore 618
// Teardown
}
public void CreateWithDifferentOperandTypeDoesNotThrowOnMultipleCall(object minimum, object maximum)
{
// Fixture setup
var numbers = new Random();
var request = new[]
{
new RangedNumberRequest(
typeof(decimal),
Convert.ChangeType(minimum, typeof(decimal)),
Convert.ChangeType(maximum, typeof(decimal))
),
new RangedNumberRequest(
typeof(double),
Convert.ChangeType(minimum, typeof(double)),
Convert.ChangeType(maximum, typeof(double))
),
new RangedNumberRequest(
typeof(decimal),
Convert.ChangeType(minimum, typeof(decimal)),
Convert.ChangeType(maximum, typeof(decimal))
)
};
var context = new DelegatingSpecimenContext
{
OnResolve = r =>
{
if (r.Equals(typeof(double)))
{
return(numbers.NextDouble());
}
if (r.Equals(typeof(decimal)))
{
return(Convert.ToDecimal(numbers.Next()));
}
return(new NoSpecimen());
}
};
var sut = new RangedNumberGenerator();
// Exercise system and verify outcome
foreach (var r in request)
{
Assert.Null(Record.Exception(() => sut.Create(r, context)));
}
// Teardown
}
public void ReturnsSameNumberWhenMinimumAndMaximumAreSame(Type requestType)
{
// Fixture setup
var range = Convert.ChangeType(42, requestType, CultureInfo.InvariantCulture);
var sut = new RangedNumberGenerator();
var request = new RangedNumberRequest(requestType, range, range);
var dummyContext = new DelegatingSpecimenContext();
// Exercise system
var result = sut.Create(request, dummyContext);
// Verify outcome
Assert.Equal(range, result);
// Teardown
}
public void CreateWithDifferentOperandTypeDoesNotThrowOnMultipleCall(object minimum, object maximum)
{
// Fixture setup
var numbers = new Random();
var request = new[]
{
new RangedNumberRequest(
typeof(decimal),
Convert.ChangeType(minimum, typeof(decimal)),
Convert.ChangeType(maximum, typeof(decimal))
),
new RangedNumberRequest(
typeof(double),
Convert.ChangeType(minimum, typeof(double)),
Convert.ChangeType(maximum, typeof(double))
),
new RangedNumberRequest(
typeof(decimal),
Convert.ChangeType(minimum, typeof(decimal)),
Convert.ChangeType(maximum, typeof(decimal))
)
};
var context = new DelegatingSpecimenContext
{
OnResolve = r =>
{
if (r.Equals(typeof(double)))
{
return(numbers.NextDouble());
}
if (r.Equals(typeof(decimal)))
{
return(Convert.ToDecimal(numbers.Next()));
}
#pragma warning disable 618
return(new NoSpecimen(r));
#pragma warning restore 618
}
};
var sut = new RangedNumberGenerator();
// Exercise system and verify outcome
Array.ForEach(request, r => Assert.DoesNotThrow(() => sut.Create(r, context)));
// Teardown
}
public void DoesNotThrowForHeterogeneousRequestsWithValuesGreaterThanInt16MaxValue()
{
var testCases = new[]
{
new
{
request =
new RangedNumberRequest(
typeof(short), (short)byte.MaxValue, short.MaxValue),
contextStub =
new DelegatingSpecimenContext
{
OnResolve = r => short.MaxValue
}
},
new
{
request =
new RangedNumberRequest(
typeof(int), (int)(short.MaxValue), int.MaxValue),
contextStub =
new DelegatingSpecimenContext
{
OnResolve = r => int.MaxValue
}
},
new
{
request =
new RangedNumberRequest(
typeof(short), (short)byte.MaxValue, short.MaxValue),
contextStub =
new DelegatingSpecimenContext
{
OnResolve = r => short.MaxValue
}
}
};
var sut = new RangedNumberGenerator();
Func <int, object> actual = i =>
sut.Create(testCases[i].request, testCases[i].contextStub);
Assert.Null(Record.Exception(() =>
Enumerable.Range(0, testCases.Length).Select(actual).ToList()));
}
public void CreateReturnsCorrectResult(Type operandType, object minimum, object maximum, object contextValue, object expectedResult)
{
// Arrange
var sut = new RangedNumberGenerator();
var request = new RangedNumberRequest(operandType, minimum, maximum);
var context = new DelegatingSpecimenContext
{
OnResolve = r =>
{
Assert.Equal(request.OperandType, r);
return(contextValue);
}
};
// Act
var result = sut.Create(request, context);
// Assert
Assert.Equal(expectedResult, result);
}
public void CreateReturnsCorrectResult(Type operandType, object minimum, object maximum, object contextValue, object expectedResult)
{
// Fixture setup
var sut = new RangedNumberGenerator();
var request = new RangedNumberRequest(operandType, minimum, maximum);
var context = new DelegatingSpecimenContext
{
OnResolve = r =>
{
Assert.Equal(request.OperandType, r);
return(contextValue);
}
};
// Exercise system
var result = sut.Create(request, context);
// Verify outcome
Assert.Equal(expectedResult, result);
// Teardown
}
