private static bool SequenceEqual <T>(IEnumerable <T> expected, IEnumerable <T> actual, IEqualityComparer <T> comparer = null)
{
var enumerator1 = expected.GetEnumerator();
var enumerator2 = actual.GetEnumerator();
while (true)
{
var hasNext1 = enumerator1.MoveNext();
var hasNext2 = enumerator2.MoveNext();
if (hasNext1 != hasNext2)
{
return(false);
}
if (!hasNext1)
{
break;
}
var value1 = enumerator1.Current;
var value2 = enumerator2.Current;
if (!(comparer != null ? comparer.Equals(value1, value2) : AssertEqualityComparer <T> .Equals(value1, value2)))
{
return(false);
}
}
return(true);
}
public static void AreEqual <T>(T expected, T actual, string message = null, IEqualityComparer <T> comparer = null)
{
if (ReferenceEquals(expected, actual))
{
return;
}
if (expected == null)
{
Fail("expected was null, but actual wasn't\r\n" + message);
}
else if (actual == null)
{
Fail("actual was null, but expected wasn't\r\n" + message);
}
else
{
if (!(comparer != null ?
comparer.Equals(expected, actual) :
AssertEqualityComparer <T> .Equals(expected, actual)))
{
Fail("Expected and actual were different.\r\n" +
"Expected: " + expected + "\r\n" +
"Actual: " + actual + "\r\n" +
message);
}
}
}
public static void Equal <T>(T expected, T actual)
{
var comparer = new AssertEqualityComparer <T>();
if (!comparer.Equals(expected, actual))
{
throw new AssertActualExpectedException(expected, actual);
}
}
public void Should_return_false_if_expected_is_null_when_comparing_equality()
{
// Given
var comparer = new AssertEqualityComparer <object>();
// When
var results = comparer.Equals(null, new object());
// Then
results.ShouldBeFalse();
}
public void Should_return_result_from_comparing_generic_comparables(int compareResult, bool expectedResult)
{
// Given
var comparer = new AssertEqualityComparer <GenericCompareableModel>();
var actual = new GenericCompareableModel(compareResult);
var expected = new GenericCompareableModel();
// When
var result = comparer.Equals(expected, actual);
// Then
result.ShouldEqual(expectedResult);
}
public void Should_invoke_compareto_with_expected_value_when_actual_is_generic_comparable()
{
// Given
var comparer = new AssertEqualityComparer <GenericCompareableModel>();
var actual = new GenericCompareableModel();
var expected = new GenericCompareableModel();
// When
comparer.Equals(expected, actual);
// Then
actual.ExpectedValueThatWasPassedIn.ShouldBeSameAs(expected);
}
public void Should_return_result_from_comparing_equatables(bool expectedReturnValue)
{
// Given
var comparer = new AssertEqualityComparer <EquatableModel>();
var actual = new EquatableModel(expectedReturnValue);
var expected = new EquatableModel();
// When
var result = comparer.Equals(expected, actual);
// Then
result.ShouldEqual(expectedReturnValue);
}
private static bool SequenceEqual <T>(ReadOnlySpan <T> expected, ReadOnlySpan <T> actual, IEqualityComparer <T> comparer = null)
{
if (expected.Length != actual.Length)
{
return(false);
}
for (int i = 0; i < expected.Length; i++)
{
if (!(comparer is not null ? comparer.Equals(expected[i], actual[i]) : AssertEqualityComparer <T> .Equals(expected[i], actual[i])))
{
return(false);
}
}
return(true);
}