public void GetEnumerator_EnumerateFull_EnumeratesOnlyOnce()
{
// arrange
var enumerable = new NonRepeatableEnumerable <int>(Enumerable.Range(1, 5));
// act
var list = enumerable.ToList();
// assert
list.Should().BeEquivalentTo(new[] { 1, 2, 3, 4, 5 });
enumerable.Should().BeEmpty();
}
public void GetEnumerator_EnumerateParital_EnumeratesInParts()
{
// arrange
var enumerable = new NonRepeatableEnumerable <int>(Enumerable.Range(1, 5));
// act
var list = enumerable.Take(3).ToList();
// assert
list.Should().BeEquivalentTo(new[] { 1, 2, 3 });
enumerable.Should().BeEquivalentTo(new[] { 4, 5 });
}
public void Chunk_WithPartialConsuming_ShouldWork()
{
// arrange
var values = new NonRepeatableEnumerable <int>(Enumerable.Range(1, 10));
// act
var result = values.Chunk(4).Take(2).ToList();
// assert
result.Should().HaveCount(2);
result.First().Should().BeEquivalentTo(new[] { 1, 2, 3, 4 });
result.Second().Should().BeEquivalentTo(new[] { 5, 6, 7, 8 });
values.Should().BeEquivalentTo(new[] { 9, 10 });
}
public void IsNullOrEmpty_ConsumingEnumerableGiven_BehavesCorrectly()
{
// arrange
var empty = new NonRepeatableEnumerable <string>(new List <string>());
var filled = new NonRepeatableEnumerable <string>(new List <string> {
"abc", "def"
});
// act
var resultEmpty = empty.IsNullOrEmpty();
var resultFilled = filled.IsNullOrEmpty();
// assert
resultEmpty.Should().BeTrue();
resultFilled.Should().BeFalse();
}
public void ContainAll_ConsumingEnumerableGiven_BehavesCorrectly()
{
// arrange
var matching = new NonRepeatableEnumerable <string>(new List <string> {
"abc", "dev", "ghi"
});
var notMatching = new NonRepeatableEnumerable <string>(new List <string> {
"abc", "ghi"
});
// act
var matchingResult = matching.ContainAll("ghi", "dev");
var notMatchingResult = notMatching.ContainAll("ghi", "dev");
// assert
matchingResult.Should().BeTrue();
notMatchingResult.Should().BeFalse();
}