The TestRunner.run() methods are static. They create their own new instance of a TestRunner and then call doRun().

I t*h*i*n*k what you need to do is call a doRun() method instead.

I grabbed this TestRunner code from a google search, didn't look at the source on my machine, so buyer beware.

....
        /**
	 * Runs a suite extracted from a TestCase subclass.
	 */
	static public void run(Class testClass) {
		run(new TestSuite(testClass));
	}

	/**
	 * Runs a single test and collects its results.
	 * This method can be used to start a test run
	 * from your program.
	 * 

	 * public static void main (String[] args) {
	 *     test.textui.TestRunner.run(suite());
	 * }
	 * 

	 */
	static public TestResult run(Test test) {
		TestRunner runner= new TestRunner();
		return runner.doRun(test);
	}
....
public TestResult doRun(Test test) {
		return doRun(test, false);
	}
	
	public TestResult doRun(Test suite, boolean wait) {
		TestResult result= createTestResult();
		result.addListener(fPrinter);
		long startTime= System.currentTimeMillis();
		suite.run(result);
		long endTime= System.currentTimeMillis();
		long runTime= endTime-startTime;
		fPrinter.print(result, runTime);

		pause(wait);
		return result;
	}