/* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ var Ci = Components.interfaces; var Cr = Components.results; var Cc = Components.classes; var CC = Components.Constructor; var MutableArray = CC("@mozilla.org/array;1", "nsIMutableArray"); var SupportsString = CC("@mozilla.org/supports-string;1", "nsISupportsString"); function create_n_element_array(n) { var arr = new MutableArray(); for (let i=0; i<n; i++) { let str = new SupportsString(); str.data = "element " + i; arr.appendElement(str, false); } return arr; } function test_appending_null_actually_inserts() { var arr = new MutableArray(); do_check_eq(0, arr.length); arr.appendElement(null, false); do_check_eq(1, arr.length); } function test_object_gets_appended() { var arr = new MutableArray(); var str = new SupportsString(); str.data = "hello"; arr.appendElement(str, false); do_check_eq(1, arr.length); var obj = arr.queryElementAt(0, Ci.nsISupportsString); do_check_eq(str, obj); } function test_insert_at_beginning() { var arr = create_n_element_array(5); // just a sanity check do_check_eq(5, arr.length); var str = new SupportsString(); str.data = "hello"; arr.insertElementAt(str, 0, false); do_check_eq(6, arr.length); var obj = arr.queryElementAt(0, Ci.nsISupportsString); do_check_eq(str, obj); // check the data of all the other objects for (let i=1; i<arr.length; i++) { let obj = arr.queryElementAt(i, Ci.nsISupportsString); do_check_eq("element " + (i-1), obj.data); } } function test_replace_element() { var arr = create_n_element_array(5); // just a sanity check do_check_eq(5, arr.length); var str = new SupportsString(); str.data = "hello"; // replace first element arr.replaceElementAt(str, 0, false); do_check_eq(5, arr.length); var obj = arr.queryElementAt(0, Ci.nsISupportsString); do_check_eq(str, obj); // replace last element arr.replaceElementAt(str, arr.length - 1, false); do_check_eq(5, arr.length); obj = arr.queryElementAt(arr.length - 1, Ci.nsISupportsString); do_check_eq(str, obj); // replace after last element, should insert empty elements arr.replaceElementAt(str, 9, false); do_check_eq(10, arr.length); obj = arr.queryElementAt(9, Ci.nsISupportsString); do_check_eq(str, obj); // AFAIK there's no way to check the empty elements, since you can't QI them. } function test_clear() { var arr = create_n_element_array(5); // just a sanity check do_check_eq(5, arr.length); arr.clear(); do_check_eq(0, arr.length); } function test_enumerate() { var arr = create_n_element_array(5); do_check_eq(5, arr.length); var en = arr.enumerate(); var i = 0; while (en.hasMoreElements()) { let str = en.getNext(); do_check_true(str instanceof Ci.nsISupportsString); do_check_eq(str.data, "element " + i); i++; } do_check_eq(arr.length, i); } function test_nssupportsarray_interop() { // Tests to check that an nsSupportsArray instance can behave like an // nsIArray. let test = Components.classes["@mozilla.org/supports-array;1"] .createInstance(Ci.nsISupportsArray); let str = new SupportsString(); str.data = "element"; test.AppendElement(str); // Now query to an nsIArray. let iarray = test.QueryInterface(Ci.nsIArray); do_check_neq(iarray, null); // Make sure |nsIArray.length| works. do_check_eq(iarray.length, 1); // Make sure |nsIArray.queryElementAt| works. let elm = iarray.queryElementAt(0, Ci.nsISupportsString); do_check_eq(elm.data, "element"); // Make sure |nsIArray.indexOf| works. let idx = iarray.indexOf(0, str); do_check_eq(idx, 0); // Make sure |nsIArray.enumerate| works. let en = iarray.enumerate(); do_check_neq(en, null); let i = 0; while (en.hasMoreElements()) { let str = en.getNext(); do_check_true(str instanceof Ci.nsISupportsString); do_check_eq(str.data, "element"); i++; } do_check_eq(iarray.length, i); } function test_nsiarrayextensions() { // Tests to check that the extensions that make an nsArray act like an // nsISupportsArray for iteration purposes works. // Note: we do not want to QI here, just want to make sure the magic glue // works as a drop-in replacement. let fake_nsisupports_array = create_n_element_array(5); // Check that |Count| works. do_check_eq(5, fake_nsisupports_array.Count()); for (let i = 0; i < fake_nsisupports_array.Count(); i++) { // Check that the generic |GetElementAt| works. let elm = fake_nsisupports_array.GetElementAt(i); do_check_neq(elm, null); let str = elm.QueryInterface(Ci.nsISupportsString); do_check_neq(str, null); do_check_eq(str.data, "element " + i); } } var tests = [ test_appending_null_actually_inserts, test_object_gets_appended, test_insert_at_beginning, test_replace_element, test_clear, test_enumerate, test_nssupportsarray_interop, test_nsiarrayextensions, ]; function run_test() { for (var i = 0; i < tests.length; i++) tests[i](); }