driver ( ';' NAME )?

public void testDriver() throws Exception {
	Attrs attrs = new Attrs();
	attrs.put("x", "10");

	Workspace w = new Workspace(tmp);
	
	assertEquals("unset", w.getDriver());
	assertEquals( "unset", w.getReplacer().process("${driver}"));
	assertEquals( "unset", w.getReplacer().process("${driver;unset}"));
	assertEquals( "", w.getReplacer().process("${driver;set}"));
	
	Workspace.setDriver("test");
	assertEquals("test", w.getDriver());
	assertEquals( "test", w.getReplacer().process("${driver}"));
	assertEquals( "test", w.getReplacer().process("${driver;test}"));
	assertEquals( "", w.getReplacer().process("${driver;nottest}"));

	w.setProperty("-bnd-driver", "test2");
	assertEquals("test2", w.getDriver());
	assertEquals( "test2", w.getReplacer().process("${driver}"));
	assertEquals( "test2", w.getReplacer().process("${driver;test2}"));
	assertEquals( "", w.getReplacer().process("${driver;nottest}"));
	
	
	w.close();
}

/**
 * Get the bnddriver, can be null if not set. The overallDriver is the
 * environment that runs this bnd.
 */
public String getDriver() {
	if (driver == null) {
		driver = getProperty(Constants.BNDDRIVER, null);
		if ( driver != null)
			driver = driver.trim();
	}

	if (driver != null)
		return driver;
	
	return overallDriver;
}

/**
 * Set the driver of this environment
 */
public static void setDriver(String driver) {
	overallDriver = driver;
}

/**
 * Macro to return the driver. Without any arguments, we return the name of
 * the driver. If there are arguments, we check each of the arguments
 * against the name of the driver. If it matches, we return the driver name.
 * If none of the args match the driver name we return an empty string
 * (which is false).
 */

public String _driver(String args[]) {
	if (args.length == 1) {
		return getDriver();
	}
	String driver = getDriver();
	if (driver == null)
		driver = getProperty(Constants.BNDDRIVER);

	if (driver != null) {
		for (int i = 1; i < args.length; i++) {
			if (args[i].equalsIgnoreCase(driver))
				return driver;
		}
	}
	return "";
}

	public void testGestalt() throws Exception {
	Attrs attrs = new Attrs();
	attrs.put("x", "10");
	Workspace.addGestalt("peter", attrs);
	Workspace w = new Workspace(tmp);
	
	assertEquals( "peter", w.getReplacer().process("${gestalt;peter}"));
	assertEquals( "10", w.getReplacer().process("${gestalt;peter;x}"));
	assertEquals( "10", w.getReplacer().process("${gestalt;peter;x;10}"));
	assertEquals( "", w.getReplacer().process("${gestalt;peter;x;11}"));
	assertEquals( "", w.getReplacer().process("${gestalt;peter;y}"));
	assertEquals( "", w.getReplacer().process("${gestalt;john}"));
	assertEquals( "", w.getReplacer().process("${gestalt;john;x}"));
	assertEquals( "", w.getReplacer().process("${gestalt;john;x;10}"));
	
	w.close();
	w = new Workspace(tmp);
	w.setProperty("-gestalt", "john;z=100, mieke;a=1000, ci");
	assertEquals( "peter", w.getReplacer().process("${gestalt;peter}"));
	assertEquals( "10", w.getReplacer().process("${gestalt;peter;x}"));
	assertEquals( "10", w.getReplacer().process("${gestalt;peter;x;10}"));
	assertEquals( "", w.getReplacer().process("${gestalt;peter;x;11}"));
	assertEquals( "", w.getReplacer().process("${gestalt;peter;y}"));
	assertEquals( "john", w.getReplacer().process("${gestalt;john}"));
	assertEquals( "100", w.getReplacer().process("${gestalt;john;z}"));
	assertEquals( "100", w.getReplacer().process("${gestalt;john;z;100}"));
	assertEquals( "", w.getReplacer().process("${gestalt;john;z;101}"));
	assertEquals( "mieke", w.getReplacer().process("${gestalt;mieke}"));
	assertEquals( "", w.getReplacer().process("${gestalt;mieke;x}"));
	
	w.close();
}