public void Single_Selector_With_Empty_Must_Return_None(int[] source, Selector <int, string> selector)
{
// Arrange
var wrapped = Wrap
.AsValueReadOnlyCollection(source);
// Act
var result = ValueReadOnlyCollection
.Select <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int, string>(wrapped, selector)
.Single();
// Assert
_ = result.Must()
.BeOfType <Option <string> >()
.EvaluateTrue(option => option.IsNone);
}
public void SelectIndex_With_ValidData_Must_Succeed(int[] source)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.Select(wrapped, (item, index) => (item + index).ToString());
// Act
var result = ValueReadOnlyCollection
.Select <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int, string>(wrapped, (item, index) => (item + index).ToString());
// Assert
_ = result.Must()
.BeEnumerableOf <string>()
.BeEqualTo(expected);
}
public void Single_With_Single_Must_Succeed(int[] source)
{
// Arrange
var wrapped = Wrap
.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.Single(source);
// Act
var result = ValueReadOnlyCollection
.Single <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped);
// Assert
_ = result.Must()
.BeEqualTo(expected);
}
public void Any_PredicateAt_With_ValidData_Must_Succeed(int[] source, PredicateAt <int> predicate)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.Count(
System.Linq.Enumerable.Where(source, predicate.AsFunc())) != 0;
// Act
var result = ValueReadOnlyCollection
.Any <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, predicate);
// Assert
_ = result.Must()
.BeEqualTo(expected);
}
public void FirstOrDefault_With_ValidData_Must_Succeed(int[] source)
{
// Arrange
var wrapped = Wrap
.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.FirstOrDefault(source);
// Act
var result = ValueReadOnlyCollection
.FirstOrDefault <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped);
// Assert
_ = result.Must()
.BeEqualTo(expected);
}
public void All_PredicateAt_With_NullPredicate_Must_Throw()
{
// Arrange
var source = new int[0];
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var predicate = (PredicateAt <int>)null;
// Act
Action action = () => _ = ValueReadOnlyCollection
.All <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, predicate);
// Assert
_ = action.Must()
.Throw <ArgumentNullException>()
.EvaluateTrue(exception => exception.ParamName == "predicate");
}
public void Take_With_ValidData_Must_Succeed(int[] source, int count)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.Take(wrapped, count);
// Act
var result = ValueReadOnlyCollection
.Take <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, count);
// Assert
_ = result.Must()
.BeEnumerableOf <int>()
.BeEqualTo(expected);
}
public void Contains_SelectorAt_With_Comparer_And_Contains_Must_ReturnTrue(int[] source, SelectorAt <int, string> selector)
{
// Arrange
var value =
System.Linq.Enumerable.Last(
System.Linq.Enumerable.Select(source, selector.AsFunc()));
var wrapped = Wrap.AsValueReadOnlyCollection(source);
// Act
var result = ValueReadOnlyCollection
.Select <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int, string>(wrapped, selector)
.Contains(value, EqualityComparer <string> .Default);
// Assert
_ = result.Must()
.BeTrue();
}
public void Single_With_Single_Must_Return_Some(int[] source)
{
// Arrange
var wrapped = Wrap
.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.Single(source);
// Act
var result = ValueReadOnlyCollection
.Single <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped);
// Assert
_ = result.Match(
value => value.Must().BeEqualTo(expected),
() => throw new Exception());
}
public void ForEach_ActionAt_With_ValidData_Must_Succeed(int[] source)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var result = new List <(int, int)>();
var expected = new List <(int, int)>();
System.Linq.EnumerableEx.ForEach(source, (item, index) => expected.Add((item, index)));
// Act
ValueReadOnlyCollection
.ForEach <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, (item, index) => result.Add((item, index)));
// Assert
_ = result.Must()
.BeEnumerableOf <(int, int)>()
.BeEqualTo(expected);
}
public void SkipTake_Count_With_ValidData_Must_Succeed(int[] source, int skipCount, int takeCount)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var expected = System.Linq.Enumerable
.Count(System.Linq.Enumerable
.Take(System.Linq.Enumerable
.Skip(wrapped, skipCount), takeCount));
// Act
var result = ValueReadOnlyCollection
.SkipTake <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, skipCount, takeCount)
.Count();
// Assert
_ = result.Must()
.BeEqualTo(expected);
}
public void ToList_With_ValidData_Collections_Must_Succeed(int[] source)
{
// Arrange
var wrapped = Wrap
.AsValueCollection(source);
var expected =
System.Linq.Enumerable.ToList(source);
// Act
var result = ValueReadOnlyCollection
.ToList <Wrap.ValueCollection <int>, Wrap.Enumerator <int>, int>(wrapped);
// Assert
_ = result.Must()
.BeOfType <List <int> >()
.BeEnumerableOf <int>()
.BeEqualTo(expected);
}
public void ElementAt_With_OutOfRange_Must_Return_None(int[] source)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
// Act
var optionNegative = ValueReadOnlyCollection
.ElementAt <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, -1);
var optionTooLarge = ValueReadOnlyCollection
.ElementAt <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, source.Length);
// Assert
_ = optionNegative.Must()
.BeOfType <Option <int> >()
.EvaluateTrue(option => option.IsNone);
_ = optionTooLarge.Must()
.BeOfType <Option <int> >()
.EvaluateTrue(option => option.IsNone);
}
public void ToArray_SelectorAt_With_ValidData_Must_Succeed(int[] source, SelectorAt <int, string> selector)
{
// Arrange
var wrapped = Wrap
.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.ToArray(
System.Linq.Enumerable.Select(source, selector.AsFunc()));
// Act
var result = ValueReadOnlyCollection
.Select <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int, string>(wrapped, selector)
.ToArray();
// Assert
_ = result.Must()
.BeArrayOf <string>()
.BeEqualTo(expected);
}
public void First_Selector_With_ValidData_Must_Return_Some(int[] source, Selector <int, string> selector)
{
// Arrange
var wrapped = Wrap
.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.First(
System.Linq.Enumerable.Select(source, selector.AsFunc()));
// Act
var result = ValueReadOnlyCollection
.Select <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int, string>(wrapped, selector)
.First();
// Assert
_ = result.Match(
value => value.Must().BeEqualTo(expected),
() => throw new Exception());
}
public void ElementAt_With_ValidData_Must_Return_Some(int[] source)
{
for (var index = 0; index < source.Length; index++)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var expected =
System.Linq.Enumerable.ElementAt(source, index);
// Act
var result = ValueReadOnlyCollection
.ElementAt <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int>(wrapped, index);
// Assert
_ = result.Match(
value => value.Must().BeEqualTo(expected),
() => throw new Exception());
}
}
public void ForEach_Action_SelectorAt_With_ValidData_Must_Succeed(int[] source, SelectorAt <int, string> selector)
{
// Arrange
var wrapped = Wrap.AsValueReadOnlyCollection(source);
var result = new List <string>();
var expected = new List <string>();
System.Linq.EnumerableEx.ForEach(
System.Linq.Enumerable.Select(source, selector.AsFunc()), item => expected.Add(item));
// Act
ValueReadOnlyCollection
.Select <Wrap.ValueReadOnlyCollection <int>, Wrap.Enumerator <int>, int, string>(wrapped, selector)
.ForEach(item => result.Add(item));
// Assert
_ = result.Must()
.BeEnumerableOf <string>()
.BeEqualTo(expected);
}
