public void QueueExtensions_DequeuePattern_ShouldDequeueTwoElementPatternWithCounts()
{
// Arrange
var input = new Queue<string>(new[]
{
"a",
"a",
"a",
"b",
"b",
"c"
});
// Act
var result = input.DequeuePattern(new[]
{
new PatternSegment<string>(s => s == "a", 3),
new PatternSegment<string>(s => s == "b", 2)
});
// Assert
CollectionAssert.AreEqual(
new[] { "a", "a", "a", "b", "b" },
result.ToArray());
Assert.AreEqual(1, input.Count());
}
public void QueueExtensions_DequeuePattern_ShouldReturnEmptyEnumerableWhenPatternFails()
{
// Arrange
var input = new Queue<string>(new[]
{
"a",
"a",
"b",
"b",
"c"
});
// Act
var result = input.DequeuePattern(new[]
{
new PatternSegment<string>(s => s == "a", 2),
new PatternSegment<string>(s => s == "c")
});
// Assert
Assert.AreEqual(0, result.Count());
Assert.AreEqual(5, input.Count());
}