Posts Tagged ‘unit-test’

Equals, ==, and MSTest

April 26th, 2010 

  public class SampleClass
    {
        public int X { get; set; }

        public override bool Equals(object obj)
        {
            if (obj == null) return false;
            if (obj.GetType() != typeof(SampleClass)) return false;
            var s = obj as SampleClass;
            return this.X == s.X;
        }
    }

Tests:

        [TestMethod()]
        public void EqualsTest()
        {
            var sc = new SampleClass { X = 1 };
            var sc_copy = sc;
            var sc2 = new SampleClass { X = 1 };

            Assert.IsFalse(sc.Equals(null));
            Assert.IsTrue(sc.Equals(sc));
            Assert.IsTrue(sc == sc_copy);
            Assert.IsFalse(sc == sc2);
            Assert.IsTrue(sc.Equals(sc2));
            Assert.IsTrue(sc2.Equals(sc));
            Assert.IsTrue(sc.Equals(sc_copy));

            Assert.AreEqual(sc, sc2);
            Assert.AreEqual(sc, sc_copy);
            Assert.AreSame(sc, sc_copy);
            Assert.AreNotSame(sc, sc2);
            Assert.AreNotSame(sc_copy, sc2);
        }
tags: , , | categories: Computers, Microsoft, Programming | 2 comments »