public void Valid_Expression_Returns_Expected_Results()
{
var comparer = InstanceComparer.For <TestClass>()
.AddExpression(t => t.StringProperty.EndsWith("a"));
var a = new TestClass {
StringProperty = "cba"
};
var b = new TestClass {
StringProperty = "a"
};
var c = new TestClass {
StringProperty = "b"
};
Assert.IsTrue(comparer.Equals(a, a));
Assert.IsTrue(comparer.Equals(b, b));
Assert.IsTrue(comparer.Equals(a, b));
Assert.IsFalse(comparer.Equals(a, null));
Assert.IsFalse(comparer.Equals(b, null));
Assert.IsFalse(comparer.Equals(c, null));
Assert.IsFalse(comparer.Equals(a, c));
Assert.IsFalse(comparer.Equals(b, c));
Assert.AreEqual(comparer.GetHashCode(a), comparer.GetHashCode(b));
Assert.AreNotEqual(comparer.GetHashCode(a), comparer.GetHashCode(c));
Assert.AreNotEqual(comparer.GetHashCode(b), comparer.GetHashCode(c));
}
public void Invalid_Field_Expression_Throws_Exception()
{
var comparer = InstanceComparer.For <TestClass>()
.AddField(c => c.StringProperty, StringComparer.OrdinalIgnoreCase);
Assert.Fail();
}
public void Valid_Field_Expression_Returns_Expected_Results()
{
var comparer = InstanceComparer.For <TestClass>()
.AddField(x => x.StringField, StringComparer.OrdinalIgnoreCase);
var a = new TestClass {
StringField = "a"
};
var b = new TestClass {
StringField = "A"
};
var c = new TestClass {
StringField = "b"
};
Assert.IsTrue(comparer.Equals(a, a));
Assert.IsTrue(comparer.Equals(b, b));
Assert.IsTrue(comparer.Equals(a, b));
Assert.IsFalse(comparer.Equals(a, null));
Assert.IsFalse(comparer.Equals(b, null));
Assert.IsFalse(comparer.Equals(c, null));
Assert.IsFalse(comparer.Equals(a, c));
Assert.IsFalse(comparer.Equals(b, c));
Assert.AreEqual(comparer.GetHashCode(a), comparer.GetHashCode(b));
Assert.AreNotEqual(comparer.GetHashCode(a), comparer.GetHashCode(c));
Assert.AreNotEqual(comparer.GetHashCode(b), comparer.GetHashCode(c));
}
public void Null_Field_Expression_Throws_Exception()
{
Expression <Func <TestClass, string> > expr = null;
var comparer = InstanceComparer.For <TestClass>().AddField(expr, StringComparer.OrdinalIgnoreCase);
Assert.Fail();
}