All tests completed successfully. TestPolynomial testDivide testGeneral testPlus testDerivative testMinus testRoot testMultiply 4 tests failed and 2 warnings found: TestPolynomial testDivide testGeneral testPlus testDerivative testMinus testRoot testMultiply -------------- *** Errors *** -------------- File: E:\Documents\cs210\Project1\TestPolynomial.java [line: 19] Failure: junit.framework.ComparisonFailure: null expected:<[-4x^3 +3x^2 +2x^1 +1x^0]> but was:<[1x^3 ]> File: E:\Documents\cs210\Project1\TestPolynomial.java [line: 75] Failure: junit.framework.AssertionFailedError: null File: E:\Documents\cs210\Project1\TestPolynomial.java [line: 97] Failure: junit.framework.AssertionFailedError: null File: E:\Documents\cs210\Project1\TestPolynomial.java [line: 107] Failure: junit.framework.AssertionFailedError: null -------------- ** Warnings ** -------------- File: E:\Documents\cs210\Project1\TestPolynomial.java [line: 41] Error: java.lang.NullPointerException File: E:\Documents\cs210\Project1\TestPolynomial.java [line: 51] Error: java.lang.NullPointerException