michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: const Ci = Components.interfaces;
michael@0: const Cr = Components.results;
michael@0: const Cc = Components.classes;
michael@0: const CC = Components.Constructor;
michael@0: 
michael@0: var MutableArray = CC("@mozilla.org/array;1", "nsIMutableArray");
michael@0: var SupportsString = CC("@mozilla.org/supports-string;1", "nsISupportsString");
michael@0: 
michael@0: function create_n_element_array(n)
michael@0: {
michael@0:   var arr = new MutableArray();
michael@0:   for (let i=0; i<n; i++) {
michael@0:     let str = new SupportsString();
michael@0:     str.data = "element " + i;
michael@0:     arr.appendElement(str, false);
michael@0:   }
michael@0:   return arr;
michael@0: }
michael@0: 
michael@0: function test_appending_null_actually_inserts()
michael@0: {
michael@0:   var arr = new MutableArray();
michael@0:   do_check_eq(0, arr.length);
michael@0:   arr.appendElement(null, false);
michael@0:   do_check_eq(1, arr.length);
michael@0: }
michael@0: 
michael@0: function test_object_gets_appended()
michael@0: {
michael@0:   var arr = new MutableArray();
michael@0:   var str = new SupportsString();
michael@0:   str.data = "hello";
michael@0:   arr.appendElement(str, false);
michael@0:   do_check_eq(1, arr.length);
michael@0:   var obj = arr.queryElementAt(0, Ci.nsISupportsString);
michael@0:   do_check_eq(str, obj);
michael@0: }
michael@0: 
michael@0: function test_insert_at_beginning()
michael@0: {
michael@0:   var arr = create_n_element_array(5);
michael@0:   // just a sanity check
michael@0:   do_check_eq(5, arr.length);
michael@0:   var str = new SupportsString();
michael@0:   str.data = "hello";
michael@0:   arr.insertElementAt(str, 0, false);
michael@0:   do_check_eq(6, arr.length);
michael@0:   var obj = arr.queryElementAt(0, Ci.nsISupportsString);
michael@0:   do_check_eq(str, obj);
michael@0:   // check the data of all the other objects
michael@0:   for (let i=1; i<arr.length; i++) {
michael@0:     let obj = arr.queryElementAt(i, Ci.nsISupportsString);
michael@0:     do_check_eq("element " + (i-1), obj.data);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function test_replace_element()
michael@0: {
michael@0:   var arr = create_n_element_array(5);
michael@0:   // just a sanity check
michael@0:   do_check_eq(5, arr.length);
michael@0:   var str = new SupportsString();
michael@0:   str.data = "hello";
michael@0:   // replace first element
michael@0:   arr.replaceElementAt(str, 0, false);
michael@0:   do_check_eq(5, arr.length);
michael@0:   var obj = arr.queryElementAt(0, Ci.nsISupportsString);
michael@0:   do_check_eq(str, obj);
michael@0:   // replace last element
michael@0:   arr.replaceElementAt(str, arr.length - 1, false);
michael@0:   do_check_eq(5, arr.length);
michael@0:   obj = arr.queryElementAt(arr.length - 1, Ci.nsISupportsString);
michael@0:   do_check_eq(str, obj);
michael@0:   // replace after last element, should insert empty elements
michael@0:   arr.replaceElementAt(str, 9, false);
michael@0:   do_check_eq(10, arr.length);
michael@0:   obj = arr.queryElementAt(9, Ci.nsISupportsString);
michael@0:   do_check_eq(str, obj);
michael@0:   // AFAIK there's no way to check the empty elements, since you can't QI them.
michael@0: }
michael@0: 
michael@0: function test_clear()
michael@0: {
michael@0:   var arr = create_n_element_array(5);
michael@0:   // just a sanity check
michael@0:   do_check_eq(5, arr.length);
michael@0:   arr.clear();
michael@0:   do_check_eq(0, arr.length);
michael@0: }
michael@0: 
michael@0: function test_enumerate()
michael@0: {
michael@0:   var arr = create_n_element_array(5);
michael@0:   do_check_eq(5, arr.length);
michael@0:   var en = arr.enumerate();
michael@0:   var i = 0;
michael@0:   while (en.hasMoreElements()) {
michael@0:     let str = en.getNext();
michael@0:     do_check_true(str instanceof Ci.nsISupportsString);
michael@0:     do_check_eq(str.data, "element " + i);
michael@0:     i++;
michael@0:   }
michael@0:   do_check_eq(arr.length, i);
michael@0: }
michael@0: 
michael@0: var tests = [
michael@0:   test_appending_null_actually_inserts,
michael@0:   test_object_gets_appended,
michael@0:   test_insert_at_beginning,
michael@0:   test_replace_element,
michael@0:   test_clear,
michael@0:   test_enumerate,
michael@0: ];
michael@0: 
michael@0: function run_test() {
michael@0:   for (var i = 0; i < tests.length; i++)
michael@0:     tests[i]();
michael@0: }