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Test set: cs636.CalculatorTest
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Tests run: 4, Failures: 2, Errors: 0, Skipped: 1, Time elapsed: 0.014 s <<< FAILURE! - in cs636.CalculatorTest
subtract  Time elapsed: 0.007 s  <<< FAILURE!
org.opentest4j.AssertionFailedError: expected: <9> but was: <8>
	at cs636.CalculatorTest.subtract(CalculatorTest.java:31)

divide  Time elapsed: 0 s  <<< FAILURE!
org.opentest4j.AssertionFailedError: expected: <4> but was: <5>
	at cs636.CalculatorTest.divide(CalculatorTest.java:38)