public void Question_1_5_InvalidCases()
{
TestHelpers.AssertExceptionThrown(() => Question_1_5.IsOneAway("", "s"), typeof(ArgumentException));
TestHelpers.AssertExceptionThrown(() => Question_1_5.IsOneAway(null, "s"), typeof(ArgumentException));
TestHelpers.AssertExceptionThrown(() => Question_1_5.IsOneAway(null, null), typeof(ArgumentException));
TestHelpers.AssertExceptionThrown(() => Question_1_5.IsOneAway("\t", "s"), typeof(ArgumentException));
}
public void Question_1_5_EdgeCase()
{
Assert.AreEqual(true, Question_1_5.IsOneAway("p", "pp"));
Assert.AreEqual(true, Question_1_5.IsOneAway("pp", "p"));
Assert.AreEqual(true, Question_1_5.IsOneAway("p", "p"));
Assert.AreEqual(true, Question_1_5.IsOneAway("p", "a"));
Assert.AreEqual(true, Question_1_5.IsOneAway("ab", "c"));
}
public void Question_1_5_Basic()
{
Assert.AreEqual(true, Question_1_5.IsOneAway("pale", "ple"));
Assert.AreEqual(true, Question_1_5.IsOneAway("pales", "pales"));
Assert.AreEqual(true, Question_1_5.IsOneAway("pale", "bale"));
Assert.AreEqual(false, Question_1_5.IsOneAway("pale", "bake"));
Assert.AreEqual(false, Question_1_5.IsOneAway("pale", "ples"));
Assert.AreEqual(true, Question_1_5.IsOneAway("pale", "pal"));
Assert.AreEqual(true, Question_1_5.IsOneAway("pale", "ale"));
}
public void AreOneAwayTest_ReturnFalse(string str1, string str2)
{
bool result = Question_1_5.AreOneAway(str1, str2);
Assert.IsFalse(result, $"{str1} and {str2} are one away.");
}
