public void InValidExpressionTestMethod()
{
String s1 = "--2+4/2";
Double?expectedresult = null;
Double actualresult = ArithmeticPatternMatchingTest.parsethisstring(s1);
Assert.AreEqual(expectedresult, actualresult);
String s2 = "2+4/2-+";
expectedresult = null;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s2);
Assert.AreEqual(expectedresult, actualresult);
String s3 = "2+-4/2";
expectedresult = null;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s3);
Assert.AreEqual(expectedresult, actualresult);
String s4 = "Test";
expectedresult = null;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s4);
Assert.AreEqual(expectedresult, actualresult);
String s5 = "a+2";
expectedresult = null;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s5);
Assert.AreEqual(expectedresult, actualresult);
String s6 = "2+3-*4";
expectedresult = null;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s6);
Assert.AreEqual(expectedresult, actualresult);
}
public void ValidExpressionTestMethod()
{
String s1 = "2+4/sqrt(4)-4";
Double expectedresult = 0;
Double actualresult = ArithmeticPatternMatchingTest.parsethisstring(s1);
Assert.AreEqual(expectedresult, actualresult);
String s2 = "sqrt(4)+3^3-2";
expectedresult = 27;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s2);
Assert.AreEqual(expectedresult, actualresult);
String s3 = "1+2+3";
expectedresult = 6;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s3);
Assert.AreEqual(expectedresult, actualresult);
String s4 = "2-2+3";
expectedresult = 3;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s4);
Assert.AreEqual(expectedresult, actualresult);
String s5 = "2^2+3*6";
expectedresult = 22;
actualresult = ArithmeticPatternMatchingTest.parsethisstring(s5);
Assert.AreEqual(expectedresult, actualresult);
}