Bug 65399 changing a "Run a Single Test" configuration into "Run All Tests in..." does not run all tests [JUnit]
First I ran a single test (by selecting the test method and then choosing Run/JUnit Test from its context menu actions). Then I decided to run all tests in the package instead. So inside the Launching Configurations dialog I chose the option Run All Tests in selected project, package or folder and selected the package which contained the test class I had previously selected. Surprisingly it did not run all tests in the package I chose in the previous dialog, rather it ran only the same test from which I created that initial launching configuration. This is a bug which users are very likely to encounter: initially they will want to run a single test and then change their mind and try to run all tests within the corresponding package. 3.0 RC1 Build id: 200405290105
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/launcher/JUnitMainTab.java
* @see ILaunchConfigurationTab#initializeFrom(ILaunchConfiguration)
	 */
	public void initializeFrom(ILaunchConfiguration config) {
		updateProjectFromConfig(config);
		String containerHandle= ""; 
		try {
			containerHandle = config.getAttribute(JUnitBaseLaunchConfiguration.LAUNCH_CONTAINER_ATTR, ""); 
		} catch (CoreException ce) {			
		}
		
		if (containerHandle.length() > 0)
			updateTestContainerFromConfig(config);
		else
			updateTestTypeFromConfig(config);
		updateKeepRunning(config);
	}
	private void updateKeepRunning(ILaunchConfiguration config) {
		boolean running= false;
		try {
			running= config.getAttribute(JUnitBaseLaunchConfiguration.ATTR_KEEPRUNNING, false);
		} catch (CoreException ce) {
		}
		fKeepRunning.setSelection(running);	 	
	}
	
	protected void updateProjectFromConfig(ILaunchConfiguration config) {
		String projectName= ""; 
		try {
			projectName = config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, ""); 
		} catch (CoreException ce) {