public bool AreEqual(object expected, object actual, EqualityComparer equalityComparer)
{
bool areEqual = true;
var expectedEnumerable = (IEnumerable) expected;
var actualEnumerable = (IEnumerable) actual;
IEnumerator expectedEnumerator = expectedEnumerable.GetEnumerator();
IEnumerator actualEnumerator = actualEnumerable.GetEnumerator();
bool expectedHasValue = expectedEnumerator.MoveNext();
bool actualHasValue = actualEnumerator.MoveNext();
int yield = 0;
while (expectedHasValue && actualHasValue)
{
areEqual = equalityComparer.AreEqual(expectedEnumerator.Current, actualEnumerator.Current, "[" + yield++ + "]") && areEqual;
expectedHasValue = expectedEnumerator.MoveNext();
actualHasValue = actualEnumerator.MoveNext();
}
if (!expectedHasValue && actualHasValue)
{
areEqual = false;
}
if (!actualHasValue && expectedHasValue)
{
areEqual = false;
}
return areEqual;
}
bool CompareIndexedProperty(PropertyInfo pi, object expected, object actual, ParameterInfo[] indexes,
EqualityComparer equalityComparer)
{
bool areEqual = true;
foreach (ParameterInfo index in indexes)
{
if (index.ParameterType == typeof (int))
{
int expectedCount = 0;
PropertyInfo expectedCountPropertyInfo = expected.GetType().GetProperty("Count");
int actualCount = 0;
PropertyInfo actualCountPropertyInfo = actual.GetType().GetProperty("Count");
if (expectedCountPropertyInfo != null)
{
expectedCount = (int) expectedCountPropertyInfo.GetValue(expected, null);
actualCount = (int) actualCountPropertyInfo.GetValue(actual, null);
if (expectedCount != actualCount)
{
areEqual = false;
break;
}
for (int i = 0; i < expectedCount; i++)
{
object[] indexValues = {i};
object value1 = pi.GetValue(expected, indexValues);
object value2 = pi.GetValue(actual, indexValues);
if (!equalityComparer.AreEqual(value1, value2, pi.Name + "[" + i + "]"))
{
areEqual = false;
}
}
}
}
}
return areEqual;
}
bool CompareStandardProperty(PropertyInfo pi1, PropertyInfo pi2, object expected, object actual,
EqualityComparer equalityComparer)
{
object value1 = pi1.GetValue(expected, null);
if (pi2 == null)
{
return equalityComparer
.AreEqual(value1, Activator.CreateInstance(typeof(MissingMember<>)
.MakeGenericType(pi1.PropertyType)), pi1.Name);
}
object value2 = pi2.GetValue(actual, null);
return equalityComparer.AreEqual(value1, value2, pi1.Name);
}