diff options
Diffstat (limited to 'gnu/testlet/java/util/Collections/sort.java')
| -rw-r--r-- | gnu/testlet/java/util/Collections/sort.java | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/gnu/testlet/java/util/Collections/sort.java b/gnu/testlet/java/util/Collections/sort.java new file mode 100644 index 00000000..37cb7499 --- /dev/null +++ b/gnu/testlet/java/util/Collections/sort.java @@ -0,0 +1,248 @@ +/* sort.java -- some checks for the sort() methods in the Collections class. + Copyright (C) 2006 David Gilbert <david.gilbert@object-refinery.com> +This file is part of Mauve. + +Mauve is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +Mauve is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Mauve; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +*/ + +// Tags: JDK1.2 + +package gnu.testlet.java.util.Collections; + +import gnu.testlet.TestHarness; +import gnu.testlet.Testlet; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; +import java.util.List; + +public class sort implements Testlet { + + public void test(TestHarness harness) + { + testMethod1(harness); + testMethod2(harness); + } + + public void testMethod1(TestHarness harness) + { + harness.checkPoint("(List)"); + List list = new ArrayList(); + + // sort an empty list - presumably all that can go wrong is that the code + // throws some exception due to a coding error... + boolean pass = true; + try + { + Collections.sort(list); + } + catch (Exception e) + { + pass = false; + } + harness.check(pass); + + // sort a list containing just one item + list = new ArrayList(); + list.add("A"); + Collections.sort(list); + harness.check(list.size(), 1); + harness.check(list.get(0), "A"); + + // sort a list containing two items + list = new ArrayList(); + list.add("B"); + list.add("A"); + Collections.sort(list); + harness.check(list.size(), 2); + harness.check(list.get(0), "A"); + harness.check(list.get(1), "B"); + + // sort a list containing three items + list = new ArrayList(); + list.add("B"); + list.add("A"); + list.add("C"); + Collections.sort(list); + harness.check(list.size(), 3); + harness.check(list.get(0), "A"); + harness.check(list.get(1), "B"); + harness.check(list.get(2), "C"); + + // sort a list with a null in it + pass = false; + try + { + list = new ArrayList(); + list.add("B"); + list.add("A"); + list.add(null); + Collections.sort(list); + } + catch (NullPointerException e) + { + pass = true; + } + harness.check(pass); + + // check that equal items don't change order + Object obj1 = new Integer(9500); + Object obj2 = new Integer(9600); + Object obj3 = new Integer(9500); + Object obj4 = new Integer(9600); + list = new ArrayList(); + list.add(obj1); + list.add(obj2); + list.add(obj3); + list.add(obj4); + Collections.sort(list); + harness.check(list.size(), 4); + harness.check(list.get(0), obj1); + harness.check(list.get(1), obj3); + harness.check(list.get(2), obj2); + harness.check(list.get(3), obj4); + + // try a null argument + pass = false; + try + { + Collections.sort(null); + } + catch (NullPointerException e) + { + pass = true; + } + harness.check(pass); + } + + static class MyComparator implements Comparator + { + + public int compare(Object obj0, Object obj1) { + Comparable c0 = (Comparable) obj0; + Comparable c1 = (Comparable) obj1; + return -c0.compareTo(c1); + } + + } + public void testMethod2(TestHarness harness) + { + harness.checkPoint("(List, Comparator)"); + List list = new ArrayList(); + Comparator comparator = new MyComparator(); + + // sort an empty list - presumably all that can go wrong is that the code + // throws some exception due to a coding error... + boolean pass = true; + try + { + Collections.sort(list, comparator); + } + catch (Exception e) + { + pass = false; + } + harness.check(pass); + + // sort a list containing just one item + list = new ArrayList(); + list.add("A"); + Collections.sort(list, comparator); + harness.check(list.size(), 1); + harness.check(list.get(0), "A"); + + // sort a list containing two items + list = new ArrayList(); + list.add("B"); + list.add("A"); + Collections.sort(list, comparator); + harness.check(list.size(), 2); + harness.check(list.get(0), "B"); + harness.check(list.get(1), "A"); + + // sort a list containing three items + list = new ArrayList(); + list.add("B"); + list.add("A"); + list.add("C"); + Collections.sort(list, comparator); + harness.check(list.size(), 3); + harness.check(list.get(0), "C"); + harness.check(list.get(1), "B"); + harness.check(list.get(2), "A"); + + // sort a list with a null in it + pass = false; + try + { + list = new ArrayList(); + list.add("B"); + list.add("A"); + list.add(null); + Collections.sort(list, comparator); + } + catch (NullPointerException e) + { + pass = true; + } + harness.check(pass); + + // check that equal items don't change order + Object obj1 = new Integer(9500); + Object obj2 = new Integer(9600); + Object obj3 = new Integer(9500); + Object obj4 = new Integer(9600); + list = new ArrayList(); + list.add(obj1); + list.add(obj2); + list.add(obj3); + list.add(obj4); + Collections.sort(list, comparator); + harness.check(list.size(), 4); + harness.check(list.get(0), obj2); + harness.check(list.get(1), obj4); + harness.check(list.get(2), obj1); + harness.check(list.get(3), obj3); + + // try a null argument 1 + pass = false; + try + { + Collections.sort(null, comparator); + } + catch (NullPointerException e) + { + pass = true; + } + harness.check(pass); + + // try a null argument 2 + pass = true; + try + { + Collections.sort(new ArrayList(), null); + } + catch (NullPointerException e) + { + pass = false; + } + harness.check(pass); + + } + +}
\ No newline at end of file |