public ComparerEngine()
{
typeComparer = EqualityCompare <TypeDefinition> .EquateBy(t => t.FullName);
fieldComparer = EqualityCompare <FieldDefinition> .EquateBy(f => f.FullName);
methodComparer = EqualityCompare <MethodDefinition> .EquateBy(m => m.FullName);
}
public void OrderBySortsNullsAsNotEqualToValues()
{
var comparer = EqualityCompare <Person> .EquateBy(p => p.LastName);
var objectComparer = comparer as System.Collections.IEqualityComparer;
Assert.IsFalse(comparer.Equals(JackAbrams, null));
Assert.IsFalse(objectComparer.Equals(JackAbrams, null));
Assert.IsFalse(comparer.Equals(JackAbrams, Jacknull));
Assert.IsFalse(objectComparer.Equals(JackAbrams, Jacknull));
}
public void OrderByWithNullPassesNullThrough()
{
var comparer = EqualityCompare <Person> .EquateBy(p => 0, allowNulls : true);
var objectComparer = comparer as System.Collections.IEqualityComparer;
Assert.IsTrue(comparer.Equals(JackAbrams, null));
Assert.IsTrue(objectComparer.Equals(JackAbrams, null));
Assert.AreEqual(comparer.GetHashCode(JackAbrams), comparer.GetHashCode(null));
Assert.AreEqual(objectComparer.GetHashCode(JackAbrams), objectComparer.GetHashCode(null));
}
public void ThenByUsesKeyComparer()
{
var comparer = EqualityCompare <Person> .EquateBy(p => p.LastName).ThenEquateBy(p => p.FirstName, StringComparer.InvariantCultureIgnoreCase);
var objectComparer = comparer as System.Collections.IEqualityComparer;
Assert.IsTrue(comparer.Equals(JackAbrams, jackAbrams));
Assert.IsTrue(objectComparer.Equals(JackAbrams, jackAbrams));
Assert.AreEqual(comparer.GetHashCode(JackAbrams), comparer.GetHashCode(jackAbrams));
Assert.AreEqual(objectComparer.GetHashCode(JackAbrams), objectComparer.GetHashCode(jackAbrams));
Assert.IsFalse(comparer.Equals(AbeAbrams, JackAbrams));
Assert.IsFalse(objectComparer.Equals(AbeAbrams, JackAbrams));
}
public void ThenBySortsByKey()
{
var comparer = EqualityCompare <Person> .EquateBy(p => p.LastName).ThenEquateBy(p => p.FirstName);
var objectComparer = comparer as System.Collections.IEqualityComparer;
Assert.IsTrue(comparer.Equals(JackAbrams, JackAbrams2));
Assert.IsTrue(objectComparer.Equals(JackAbrams, JackAbrams2));
Assert.AreEqual(comparer.GetHashCode(JackAbrams), comparer.GetHashCode(JackAbrams2));
Assert.AreEqual(objectComparer.GetHashCode(JackAbrams), objectComparer.GetHashCode(JackAbrams2));
Assert.IsFalse(comparer.Equals(AbeAbrams, JackAbrams));
Assert.IsFalse(objectComparer.Equals(AbeAbrams, JackAbrams));
}
public void OrderByComparesByKey()
{
var comparer = EqualityCompare <Person> .EquateBy(p => p.LastName);
var objectComparer = comparer as System.Collections.IEqualityComparer;
Assert.IsTrue(comparer.Equals(AbeAbrams, JackAbrams));
Assert.IsTrue(objectComparer.Equals(AbeAbrams, JackAbrams));
Assert.AreEqual(comparer.GetHashCode(AbeAbrams), comparer.GetHashCode(JackAbrams));
Assert.AreEqual(objectComparer.GetHashCode(AbeAbrams), objectComparer.GetHashCode(JackAbrams));
Assert.IsFalse(comparer.Equals(AbeAbrams, CaseyJohnson));
Assert.IsFalse(objectComparer.Equals(AbeAbrams, CaseyJohnson));
}
public void OrderByWithNullThenByHandlesNull()
{
var comparer = EqualityCompare <Person> .EquateBy(p => p == null, allowNulls : true).ThenEquateBy(p => p.LastName).ThenEquateBy(p =>
{
Assert.Fail();
return(0);
});
var objectComparer = comparer as System.Collections.IEqualityComparer;
Assert.IsTrue(comparer.Equals(null, null));
Assert.IsTrue(objectComparer.Equals(null, null));
Assert.AreEqual(comparer.GetHashCode(null), comparer.GetHashCode(null));
Assert.AreEqual(objectComparer.GetHashCode(null), objectComparer.GetHashCode(null));
}
public void OrderByUsesKeyComparer()
{
var keyComparer = StringComparer.InvariantCultureIgnoreCase;
var comparer = EqualityCompare <Person> .EquateBy(p => p.LastName, keyComparer);
var objectComparer = comparer as System.Collections.IEqualityComparer;
Assert.IsTrue(comparer.Equals(AbeAbrams, Williamabrams));
Assert.IsTrue(objectComparer.Equals(AbeAbrams, Williamabrams));
Assert.AreEqual(comparer.GetHashCode(AbeAbrams), comparer.GetHashCode(Williamabrams));
Assert.AreEqual(objectComparer.GetHashCode(AbeAbrams), objectComparer.GetHashCode(Williamabrams));
Assert.IsFalse(comparer.Equals(Williamabrams, CaseyJohnson));
Assert.IsFalse(objectComparer.Equals(Williamabrams, CaseyJohnson));
Assert.AreEqual(keyComparer.GetHashCode(Williamabrams.LastName) == keyComparer.GetHashCode(CaseyJohnson.LastName),
comparer.GetHashCode(Williamabrams) == comparer.GetHashCode(CaseyJohnson));
}
static TestRun()
{
DefaultComparer = EqualityCompare <TestRun> .EquateBy(t => t.Id);
}
static Person()
{
DefaultComparer = EqualityCompare <Person> .EquateBy(p => p.LastName);
}