@Test public void shouldCalculateTheCorrectSubttractionIfBothIntegersAreNegative() { int inputA = -30; int inputB = -35; int result = subtractAdding.subtract(inputA, inputB); assertEquals(5, result); }
public int subtract(int inputA, int inputB) { return inputA + negate(inputB); }
SubtractAdding { public int subtract(int inputA, int inputB) { return inputA + negate(inputB); } }
SubtractAdding { public int subtract(int inputA, int inputB) { return inputA + negate(inputB); }  }
SubtractAdding { public int subtract(int inputA, int inputB) { return inputA + negate(inputB); }  int subtract(int inputA, int inputB); }
SubtractAdding { public int subtract(int inputA, int inputB) { return inputA + negate(inputB); }  int subtract(int inputA, int inputB);  }