public void SingleOrDefault()
{
Assert.Equal(Enumerable.SingleOrDefault(oneElement), ImmutableArrayExtensions.SingleOrDefault(oneElement));
Assert.Equal(Enumerable.SingleOrDefault(oneElement), ImmutableArrayExtensions.SingleOrDefault(oneElement, i => true));
Assert.Equal(Enumerable.SingleOrDefault(oneElement, i => false), ImmutableArrayExtensions.SingleOrDefault(oneElement, i => false));
Assert.Throws <InvalidOperationException>(() => ImmutableArrayExtensions.SingleOrDefault(manyElements));
Assert.Throws <InvalidOperationException>(() => ImmutableArrayExtensions.SingleOrDefault(manyElements, i => true));
Assert.Throws <ArgumentNullException>(() => ImmutableArrayExtensions.SingleOrDefault(oneElement, null));
}
public void SingleOrDefaultEmptyDefault()
{
Assert.Throws <NullReferenceException>(() => ImmutableArrayExtensions.SingleOrDefault(emptyDefault));
Assert.Throws <NullReferenceException>(() => ImmutableArrayExtensions.SingleOrDefault(emptyDefault, n => true));
Assert.Throws <ArgumentNullException>(() => ImmutableArrayExtensions.SingleOrDefault(emptyDefault, null));
}
public void SingleOrDefaultEmpty()
{
Assert.Equal(0, ImmutableArrayExtensions.SingleOrDefault(empty));
Assert.Equal(0, ImmutableArrayExtensions.SingleOrDefault(empty, n => true));
Assert.Throws <ArgumentNullException>(() => ImmutableArrayExtensions.SingleOrDefault(empty, null));
}
public void SingleOrDefaultEmptyDefault()
{
TestExtensionsMethods.ValidateDefaultThisBehavior(() => ImmutableArrayExtensions.SingleOrDefault(s_emptyDefault));
TestExtensionsMethods.ValidateDefaultThisBehavior(() => ImmutableArrayExtensions.SingleOrDefault(s_emptyDefault, n => true));
AssertExtensions.Throws <ArgumentNullException>("predicate", () => ImmutableArrayExtensions.SingleOrDefault(s_emptyDefault, null));
}
