src/test/groovy/WhileLoopTest.groovy

package groovy

class WhileLoopTest extends GroovyTestCase {

    void testVerySimpleWhile() {
        def val = doWhileMethod(0, 5)
        println(val)
    }

    void testWhileWithEmptyBody() {
        int x = 3
        while (--x);
        assert x == 0
    }

    void testMoreComplexWhile() {
        def x = 0
        def y = 5

        while ( y > 0 ) {
            x = x + 1
            y = y - 1
        }

        assert x == 5
    }

    def doWhileMethod(x, m) {
        while ( x < m ) {
            x = increment(x)
        }

        return x
    }

    def increment(x) {
        x + 1
    }
}