static int runTestCase(int casenum__) {
		switch (casenum__) {
		case 0: {
			int x1 = 1;
			int y1 = 1;
			int x2 = 5;
			int y2 = 5;
			int expected__ = 3;

			return verifyCase(casenum__, expected__,
					new DreamingAboutCarrots().carrotsBetweenCarrots(x1, y1,
							x2, y2));
		}
		case 1: {
			int x1 = 0;
			int y1 = 0;
			int x2 = 1;
			int y2 = 1;
			int expected__ = 0;

			return verifyCase(casenum__, expected__,
					new DreamingAboutCarrots().carrotsBetweenCarrots(x1, y1,
							x2, y2));
		}
		case 2: {
			int x1 = 50;
			int y1 = 48;
			int x2 = 0;
			int y2 = 0;
			int expected__ = 1;

			return verifyCase(casenum__, expected__,
					new DreamingAboutCarrots().carrotsBetweenCarrots(x1, y1,
							x2, y2));
		}
		case 3: {
			int x1 = 0;
			int y1 = 0;
			int x2 = 42;
			int y2 = 36;
			int expected__ = 5;

			return verifyCase(casenum__, expected__,
					new DreamingAboutCarrots().carrotsBetweenCarrots(x1, y1,
							x2, y2));
		}

		// custom cases

		/*
		 * case 4: { int x1 = ; int y1 = ; int x2 = ; int y2 = ; int expected__
		 * = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * DreamingAboutCarrots().carrotsBetweenCarrots(x1, y1, x2, y2)); }
		 */
		/*
		 * case 5: { int x1 = ; int y1 = ; int x2 = ; int y2 = ; int expected__
		 * = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * DreamingAboutCarrots().carrotsBetweenCarrots(x1, y1, x2, y2)); }
		 */
		/*
		 * case 6: { int x1 = ; int y1 = ; int x2 = ; int y2 = ; int expected__
		 * = ;
		 * 
		 * return verifyCase(casenum__, expected__, new
		 * DreamingAboutCarrots().carrotsBetweenCarrots(x1, y1, x2, y2)); }
		 */
		default:
			return -1;
		}
	}