Tester.java

class Tester {
    static boolean allTestsPassed=true;
    static int      numTestsFailed=0;

    static void test(Object actual, Object expected) {
	if ( actual != expected ) {
	    System.out.println("Test failed: expected \"" + expected + "\" but got \"" + actual + "\"");
	    allTestsPassed=false;
	    numTestsFailed++;
	}
    }

    static void test(String actual, String expected) {
	if ( actual != expected ) {
	    System.out.println("Test failed: expected \"" + expected + "\" but got \"" + actual + "\"");
	    allTestsPassed=false;
	    numTestsFailed++;
	}
    }

    static void test(Integer actual, Integer expected) {
	if ( !actual.equals(expected) ) {
	    System.out.println("Test failed: expected \"" + expected + "\" but got \"" + actual + "\"");
	    allTestsPassed=false;
	    numTestsFailed++;
	}
    }

    static void test(boolean actual, boolean expected) {
	if ( actual != expected ) {
	    System.out.println("Test failed: expected \"" + expected + "\" but got \"" + actual + "\"");
	    allTestsPassed=false;
	    numTestsFailed++;
	}
    }


    static void printResults() {
	if (allTestsPassed) System.out.println("All Tests Passed!");
	else System.out.println(numTestsFailed + " tests failed.");
    }


}