JavaClasses/testStopwatch.java

//Java/JavaClasses/testStopwatch.java
//Matthew Ellison
// Created: 03-01-19
//Modified: 03-01-19
//This class is used to test that stopwatch does what it is supposed to do (approximately)


import mattrixwv.Stopwatch;


public class testStopwatch{
	private static final int NUM_TO_RUN = 100000;
    public static void main(String[] argv){
		Boolean failed = false;	//A flag to determine if all tests were passed
		//Print the test begin message
		System.out.println("Begin test");
		//Describe which test is being performed
		System.out.println("Starting loop");
		//Start the timer
		Stopwatch timer = new Stopwatch();
		timer.start();
		for(int cnt = 0;cnt < NUM_TO_RUN;++cnt){
			System.out.print(cnt);
		}
		//Stop the timer
		timer.stop();
		System.out.println("\nLoop completed");

		//Check that the different resolutions work out correctly
		System.out.println("Checking that resolutions line up correctly");
		Double nano = timer.getNano();
		if(timer.getMicro() != (nano.doubleValue() / 1000D)){
			System.out.println("Error on microsecond resolution");
			failed = true;
		}
		else if(timer.getMilli() != (nano.doubleValue() / 1000000D)){
			System.out.println("Error on millisecond resolution");
			failed = true;
		}
		else if(timer.getSecond() != (nano.doubleValue() / 1000000000D)){
			System.out.println("Error on second resolution");
			failed = true;
		}
		else if(timer.getMinute() != (nano.doubleValue() / 60000000000D)){
			System.out.println("Error on minute resolution");
			failed = true;
		}
		else if(timer.getHour() != (nano.doubleValue() / 3600000000000D)){
			System.out.println("Error on hour resolution");
			failed = true;
		}
		else{
			System.out.println("All time resolution tests completed successfully");
		}
		System.out.println("Completed resolution checking");

		//Print the results
		System.out.printf("The timer results in: %s\n", timer.getStr());
		System.out.printf("The timer results in: %f milliseconds\n", timer.getMilli());

		if(!failed){
			System.out.println("All tests completed successfully");
		}
		else{
			System.out.println("Test failed. Try again!");
		}
    }
}