Groovy example source code file (SubscriptTest.groovy)

This example Groovy source code file (SubscriptTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

foo, gromit, gromit, groovytestcase, integer, integer, string, string, subscripttest, subscripttest

The Groovy SubscriptTest.groovy source code

package groovy

class SubscriptTest extends GroovyTestCase {

    void testListRange() {
        def list = ['a', 'b', 'c', 'd', 'e']

        def sub = list[2..4]
        assert sub == ['c', 'd', 'e']
        
        sub = list[2..<5]
        assert sub == ['c', 'd', 'e']
        
        def value = list[-1]
        assert value == 'e'
        
        sub = list[-4..-2]
        assert sub == ['b', 'c', 'd']
        
        // backwards ranges
        sub = list[-1..-3]
        assert sub == ['e', 'd', 'c']
        
        sub = list[-3..-1]
        assert sub == ['c', 'd', 'e']
        
        sub = list[3..1]
        assert sub == ['d', 'c', 'b']
        
        sub = list[1..-3]
        assert sub == ['b', 'c']
    }
    
    void testObjectRangeRange() {
        def list = 'a'..'e'
        
        def sub = list[2..4]
        assert sub == ['c', 'd', 'e']
        
        def value = list[-1]
        assert value == 'e'
        
        sub = list[-4..-2]
        assert sub == ['b', 'c', 'd']
        
        // backwards ranges
        sub = list[-1..-3]
        assert sub == ['e', 'd', 'c']
        
        sub = list[3..1]
        assert sub == ['d', 'c', 'b']
    }
    
    void testStringArrayRange() {
        String[] list = ['a', 'b', 'c', 'd', 'e']
        
        def sub = list[2..4]
        assert sub == ['c', 'd', 'e']
        
        def value = list[-1]
        assert value == 'e'
        
        sub = list[-4..-2]
        assert sub == ['b', 'c', 'd']
        
        // backwards ranges
        sub = list[-1..-3]
        assert sub == ['e', 'd', 'c']
        
        sub = list[3..1]
        assert sub == ['d', 'c', 'b']
    }
    
    void testIntRangeRange() {
        def list = 10..15
        
        def sub = list[2..4]
        assert sub == [12, 13, 14]
        
        def value = list[-1]
        assert value == 15
        
        sub = list[-4..-2]
        assert sub == [12, 13, 14]
        
        // backwards ranges
        sub = list[-1..-3]
        assert sub == [15, 14, 13]
        
        sub = list[3..1]
        assert sub == [13, 12, 11]
    }
    
    void testIntArrayRange() {
        Integer[] list = [ 10, 11, 12, 13, 14, 15 ]
        
        def sub = list[2..4]
        assert sub == [12, 13, 14]
        
        def value = list[-1]
        assert value == 15
        
        sub = list[-4..-2]
        assert sub == [12, 13, 14]
        
        // backwards ranges
        sub = list[-1..-3]
        assert sub == [15, 14, 13]
        
        sub = list[3..1]
        assert sub == [13, 12, 11]
    }
    
    void testStringSubscript() {
        def text = "nice cheese gromit!"
        
        def x = text[2]
        
        assert x == "c"
        assert x.class == String
        
        def sub = text[5..10]
        assert sub == 'cheese'
        
        sub = text[10..5]
        assert sub == 'eseehc'
        
        sub = text[-2..-7]
        assert sub == 'timorg'
        
        sub = text[1..-3]
        assert sub == "ice cheese gromi"
        
    }

    void testStringPutAtRange(){
        def text = "0123"
    }
    
    void testListSubscriptWithList() {
        def list = ['a', 'b', 'c', 'd', 'e']
        
        def indices = [0, 2, 4]
        def sub = list[indices]
        assert sub == ['a', 'c', 'e']
        
        // verbose but valid
        sub = list[[1, 3]]
        assert sub == ['b', 'd']
     
        // syntax sugar
        sub = list[2, 4]
        assert sub == ['c', 'e']
    }
    
    
    void testListSubscriptWithListAndRange() {
        def list = 100..200

        def sub = list[1, 3, 20..25, 33]
        assert sub == [101, 103, 120, 121, 122, 123, 124, 125, 133]

        // now lets try it on an array
        def array = list.toArray()

        sub = array[1, 3, 20..25, 33]
        assert sub == [101, 103, 120, 121, 122, 123, 124, 125, 133]
    }

    void testStringWithSubscriptList() {

        def text = "nice cheese gromit!"
        
        def sub = text[1, 2, 3, 5..10]
        
        assert sub == "icecheese"
    }
    
    void testSubMap() {
        def map = ['a':123, 'b':456, 'c':789]
        
        def keys = ['b', 'a']
        def sub = map.subMap(keys)
        
        assert sub.size() == 2
        assert sub['a'] == 123
        assert sub['b'] == 456
        assert ! sub.containsKey('c')
        
        assert map.getClass() == sub.getClass()
    }
    
    void testListWithinAListSyntax() {
        def list = [1, 2, 3, 4..10, 5, 6]
        
        assert list.size() == 6
        def sublist = list[3]
        assert sublist == 4..10
        assert sublist == [4, 5, 6, 7, 8, 9, 10]
    }


    void testBeanProperties() {
        def foo = new Foo()

        foo['name'] = 'Gromit'

        assert foo.name == 'Gromit'

        def value = foo['name']
        assert value == 'Gromit'
    }
}