public async void ElementAtAsync_Predicate_Selector_With_OutOfRange_Must_Return_None(int[] source, Predicate <int> predicate, Selector <int, string> selector) { // Arrange var wrapped = Wrap.AsAsyncValueEnumerable(source); // Act var optionNegative = await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .ElementAtAsync(-1); var optionTooLarge = await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .ElementAtAsync(source.Length); // Assert _ = optionNegative.Must() .BeOfType <Option <string> >() .EvaluateTrue(option => option.IsNone); _ = optionTooLarge.Must() .BeOfType <Option <string> >() .EvaluateTrue(option => option.IsNone); }
public async ValueTask ContainsAsync_Predicate_Selector_With_Comparer_And_NotContains_Must_ReturnFalse(int[] source, Predicate <int> predicate, Selector <int, string> selector) { // Arrange var value = "!"; var wrapped = Wrap.AsAsyncValueEnumerable(source); // Act var result = await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .ContainsAsync(value, EqualityComparer <string> .Default); // Assert _ = result.Must() .BeFalse(); }
public async void FirstAsync_Predicate_Selector_With_Empty_Must_Return_None(int[] source, Predicate <int> predicate, Selector <int, string> selector) { // Arrange var wrapped = Wrap .AsAsyncValueEnumerable(source); // Act var result = await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .FirstAsync(); // Assert _ = result.Must() .BeOfType <Option <string> >() .EvaluateTrue(option => option.IsNone); }
public async ValueTask ContainsAsync_Predicate_Selector_With_Null_And_Contains_Must_ReturnTrue(int[] source, Predicate <int> predicate, Selector <int, string> selector) { // Arrange var value = System.Linq.Enumerable.Last( System.Linq.Enumerable.Select( System.Linq.Enumerable.Where(source, predicate.AsFunc()), selector.AsFunc())); var wrapped = Wrap.AsAsyncValueEnumerable(source); // Act var result = await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .ContainsAsync(value, null); // Assert _ = result.Must() .BeTrue(); }
public async ValueTask ToArrayAsync_Predicate_Selector_With_ValidData_Must_Succeed(int[] source, Predicate <int> predicate, Selector <int, string> selector) { // Arrange var wrapped = Wrap .AsAsyncValueEnumerable(source); var expected = System.Linq.Enumerable.ToArray( System.Linq.Enumerable.Select( System.Linq.Enumerable.Where(source, predicate.AsFunc()), selector.AsFunc())); // Act var result = await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .ToArrayAsync(); // Assert _ = result.Must() .BeArrayOf <string>() .BeEqualTo(expected); }
public async ValueTask FirstAsync_Predicate_Selector_With_ValidData_Must_Return_Some(int[] source, Predicate <int> predicate, Selector <int, string> selector) { // Arrange var wrapped = Wrap .AsAsyncValueEnumerable(source); var expected = System.Linq.Enumerable.First( System.Linq.Enumerable.Select( System.Linq.Enumerable.Where(source, predicate.AsFunc()), selector.AsFunc())); // Act var result = await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .FirstAsync(); // Assert _ = result.Match( value => value.Must().BeEqualTo(expected), () => throw new Exception()); }
public async ValueTask ForEachAsync_ActionAt_Predicate_Selector_With_ValidData_Must_Succeed(int[] source, Predicate <int> predicate, Selector <int, string> selector) { // Arrange var wrapped = Wrap.AsAsyncValueEnumerable(source); var result = new List <(string, int)>(); var expected = new List <(string, int)>(); System.Linq.EnumerableEx.ForEach( System.Linq.Enumerable.Select( System.Linq.Enumerable.Where(source, predicate.AsFunc()), selector.AsFunc()), (item, index) => expected.Add((item, index))); // Act await AsyncValueEnumerable .Where <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int>(wrapped, predicate.AsAsync()) .Select(selector.AsAsync()) .ForEachAsync((item, index, cancellationToken) => { result.Add((item, index)); return(new ValueTask()); }); // Assert _ = result.Must() .BeEnumerableOf <(string, int)>() .BeEqualTo(expected); }
public async ValueTask ToListAsync_Selector_With_ValidData_Must_Succeed(int[] source, Selector <int, string> selector) { // Arrange var wrapped = Wrap .AsAsyncValueEnumerable(source); var expected = System.Linq.Enumerable.ToList( System.Linq.Enumerable.Select(source, selector.AsFunc())); // Act var result = await AsyncValueEnumerable .Select <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int, string>(wrapped, selector.AsAsync()) .ToListAsync(); // Assert _ = result.Must() .BeOfType <List <string> >() .BeEnumerableOf <string>() .BeEqualTo(expected); }
public async ValueTask ContainsAsync_Selector_With_Comparer_And_Contains_Must_ReturnTrue(int[] source, Selector <int, string> selector) { // Arrange var value = System.Linq.Enumerable.Last( System.Linq.Enumerable.Select(source, selector.AsFunc())); var wrapped = Wrap.AsAsyncValueEnumerable(source); // Act var result = await AsyncValueEnumerable .Select <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int, string>(wrapped, selector.AsAsync()) .ContainsAsync(value, EqualityComparer <string> .Default); // Assert _ = result.Must() .BeTrue(); }
public async ValueTask ContainsAsync_Selector_With_Null_And_NotContains_Must_ReturnFalse(int[] source, Selector <int, string> selector) { // Arrange var value = "!"; var wrapped = Wrap.AsAsyncValueEnumerable(source); // Act var result = await AsyncValueEnumerable .Select <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int, string>(wrapped, selector.AsAsync()) .ContainsAsync(value, null); // Assert _ = result.Must() .BeFalse(); }
public async ValueTask ElementAtAsync_Selector_With_ValidData_Must_Return_Some(int[] source, Selector <int, string> selector) { for (var index = 0; index < source.Length; index++) { // Arrange var wrapped = Wrap.AsAsyncValueEnumerable(source); var expected = System.Linq.Enumerable.ElementAt( System.Linq.Enumerable.Select(source, selector.AsFunc()), index); // Act var result = await AsyncValueEnumerable .Select <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int, string>(wrapped, selector.AsAsync()) .ElementAtAsync(index); // Assert _ = result.Match( value => value.Must().BeEqualTo(expected), () => throw new Exception()); } }
public async void SingleAsync_Selector_With_Multiple_Must_Return_None(int[] source, Selector <int, string> selector) { // Arrange var wrapped = Wrap .AsAsyncValueEnumerable(source); // Act var result = await AsyncValueEnumerable .Select <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int, string>(wrapped, selector.AsAsync()) .SingleAsync(); // Assert _ = result.Must() .BeOfType <Option <string> >() .EvaluateTrue(option => option.IsNone); }
public async ValueTask SingleAsync_Selector_With_SingleAsync_Must_Return_Some(int[] source, Selector <int, string> selector) { // Arrange var wrapped = Wrap .AsAsyncValueEnumerable(source); var expected = System.Linq.Enumerable.Single( System.Linq.Enumerable.Select(source, selector.AsFunc())); // Act var result = await AsyncValueEnumerable .Select <Wrap.AsyncValueEnumerable <int>, Wrap.AsyncEnumerator <int>, int, string>(wrapped, selector.AsAsync()) .SingleAsync(); // Assert _ = result.Match( value => value.Must().BeEqualTo(expected), () => throw new Exception()); }