public void EqualsTest()
{
const string text1 = "one";
const string text2 = "qwerty";
var alphabet1 = new Alphabet(text1);
var alphabet2 = new Alphabet(text1);
var alphabet3 = new Alphabet(text2);
Assert.IsTrue(alphabet1.Equals(alphabet2));
Assert.IsTrue(alphabet2.Equals(alphabet1));
Assert.IsFalse(alphabet1.Equals(alphabet3));
Assert.IsFalse(alphabet2.Equals(alphabet3));
Assert.IsTrue(alphabet1 == alphabet2);
Assert.IsTrue(alphabet2 == alphabet1);
Assert.IsFalse(alphabet1 == alphabet3);
Assert.IsFalse(alphabet2 == alphabet3);
Assert.IsFalse(alphabet1 != alphabet2);
Assert.IsFalse(alphabet2 != alphabet1);
Assert.IsTrue(alphabet1 != alphabet3);
Assert.IsTrue(alphabet2 != alphabet3);
}
public void EqualsNullTest()
{
var alphabet = new Alphabet("one");
Assert.IsFalse(alphabet.Equals(null));
Assert.IsFalse(alphabet.Equals((object)null));
Assert.IsFalse(alphabet == null);
Assert.IsTrue((Alphabet)null == null);
}
public void EqualsOtherTypeTest()
{
const string text = "one";
var alphabet = new Alphabet(text);
Assert.IsFalse(alphabet.Equals(text));
}