public void SingleNextTest()
{
IStringMutator sut = new ToUpperMutator();
IStringMutator stringMutator2 = new InvertMutator();
IStringMutator stringMutator3 = new RemoveNumbersMutator();
IStringMutator stringMutator4 = new TrimMutator();
sut.SetNext(stringMutator2);
sut.SetNext(stringMutator3);
sut.SetNext(stringMutator4);
string actual = sut.Mutate(" some2345Text ");
Assert.Equal("SOME2345TEXT", actual);
}
public void StringMutatorsTest()
{
IStringMutator stringMutator1 = new ToUpperMutator();
IStringMutator stringMutator2 = new InvertMutator();
IStringMutator stringMutator3 = new RemoveNumbersMutator();
IStringMutator stringMutator4 = new TrimMutator();
stringMutator1
.SetNext(stringMutator2)
.SetNext(stringMutator3)
.SetNext(stringMutator4);
string actual = stringMutator1.Mutate(" SOME 1 input 2 String 3");
Assert.Equal("GNIRTS TUPNI EMOS", actual);
}
public void NullHandlingTest()
{
IStringMutator stringMutator = new ToUpperMutator();
var result = stringMutator.Mutate(null);
Assert.Null(result);
stringMutator = new InvertMutator();
result = stringMutator.Mutate(null);
Assert.Null(result);
stringMutator = new RemoveNumbersMutator();
result = stringMutator.Mutate(null);
Assert.Null(result);
stringMutator = new TrimMutator();
result = stringMutator.Mutate(null);
Assert.Null(result);
}