public void Count_WhenEmpty_ThenZero()
{
// given
testObject = new DoubleHeap <int>();
// when
int result = testObject.Count;
// then
result.Should().Be(0);
}
public void GetEnumerator_WhenEmpty_ThenNoElements()
{
// given
testObject = new DoubleHeap <int>();
// when
IEnumerator <int> result = testObject.GetEnumerator();
// then
result.MoveNext().Should().BeFalse();
}
public void TryGetMin_WhenEmpty_ThenDefaultValue()
{
// given
testObject = new DoubleHeap <int>();
// when
bool result = testObject.TryGetMin(out int resultValue);
// then
result.Should().BeFalse();
resultValue.Should().Be(default);
public void GetMax_WhenEmpty_ThenInvalidOperationException()
{
// given
testObject = new DoubleHeap <int>();
// when
Action action = () => testObject.GetMax();
// then
action.Should().Throw <InvalidOperationException>();
}
public void GetMax_WhenSingleElement_ThenThisElement()
{
// given
int element = 19;
testObject = new DoubleHeap <int>(new[] { element });
// when
int result = testObject.GetMax();
// then
result.Should().Be(element);
}
public void Push_WhenEmpty_ThenAdded()
{
// given
int element = 19;
testObject = new DoubleHeap <int>();
// when
testObject.Push(element);
// then
testObject.Should().HaveCount(1);
testObject.GetMin().Should().Be(element);
testObject.GetMax().Should().Be(element);
}
public void GetEnumerator_WhenSingleElement_ThenThisElementOnly()
{
// given
int element = 17;
testObject = new DoubleHeap <int>(new[] { element });
// when
IEnumerator <int> result = testObject.GetEnumerator();
// then
result.MoveNext().Should().BeTrue();
result.Current.Should().Be(element);
result.MoveNext().Should().BeFalse();
}
public void SetUp() => testObject = new DoubleHeap <int>(numbers);