Spock sample test

FixedSizeListSpec.groovy

import spock.lang.Specification;

class FixedSizeListSpec extends Specification {

  def "T1 - clear a empty list"() {
    given: "a empty list"
    List list = list(maxsize: 2)
    when: "clear the list"
    list.clear()
    then: "the list should be empty"
    list.isEmpty()
  }

  def "T2 - remove element from empty list"() {
    given: "a empty list"
    List list = list(maxsize: 2)
    when: "remove a element from the list"
    list.remove("abc")
    then: "list should be empty"
    list.isEmpty()
  }

  def "T3 - clear a filled list"() {
    given: "a list with one element"
    List list = list(maxsize: 2)
    list.add("abc")
    when: "clear the list"
    list.clear()
    then: "list should be empty"
    list.isEmpty()
  }

  def "T4 - remove element from list"() {
    given: "a list with one element"
    List list = list(maxsize: 2)
    list.add("abc")
    when: "remove the element from the list"
    list.remove("abc")
    then: "the list should be empty"
    list.isEmpty()
  }

  def "T5 - remove a element which is not in the list"() {
    given: "a list with one element"
    List list = list(maxsize: 2)
    list.add("abc")
    when: "remove a element which is not in the list"
    list.remove("xyz")
    then: "the list size should be one"
    list.size() == 1
    list.get(0) == "abc"
  }

  def "T6 - add to much elements in a list"() {
    given: "a list with two elements"
    List list = list(maxsize: 2)
    list.add("abc")
    list.add("xyz")
    when: "add another element to the list"
    list.add("123")
    then: "the list should throw a exception"
    thrown IllegalStateException
  }
  
  def "T7 - clear list with two elements"() { 
    given: "a list with two elements"
    List list = list(maxsize: 2)
    list.add("abc")
    list.add("xyz")
    when: "clear the list"
    list.clear()
    then: "the list should be empty"
    list.isEmpty()
  }
  
  def "T8 - remove a element form a list with two elements"() {
    given: "a list with two elements"
    List list = list(maxsize: 2)
    list.add("abc")
    list.add("xyz")
    when: "remove one element from the list"
    list.remove("abc")
    then: "the list size should be 1"
    list.size() == 1
    list.get(0) == "xyz"
  }
  
  def "T9 - remove a element which is not in the list(size = 2)"() {
    given: "a list with two elements"
    List list = list(maxsize: 2)
    list.add("abc")
    list.add("xyz")
    when: "remove element which is not in the list"
    list.remove("123")
    then: "the list size should be 2"
    list.size() == 2
    list.get(0) == "abc"
    list.get(1) == "xyz"
  }
  
  def list(attr) {
    new FixedSizeArrayList(attr.maxsize)
  }
  
}