public void TestSide3ValueInvalid()
{
// validate that value of side3 is set correctly
int s1 = 5, s2 = 8, s3 = 4;
TriangleSolver.Analyze(s1, s2, s3);
int val = TriangleSolver.GetSide3();
Assert.AreNotEqual(val, s1);
}