зеркало из https://github.com/mozilla/pjs.git
124 строки
3.9 KiB
JavaScript
124 строки
3.9 KiB
JavaScript
/* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released March
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* 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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*/
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/**
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Filename: slice.js
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Description: 'This tests the String object method: slice'
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Author: Nick Lerissa
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Date: Fri Feb 13 09:58:28 PST 1998
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*/
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var SECTION = 'As described in Netscape doc "Whats new in JavaScript 1.2"';
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var VERSION = 'no version';
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startTest();
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var TITLE = 'String.slice';
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writeHeaderToLog('Executing script: slice.js');
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writeHeaderToLog( SECTION + " "+ TITLE);
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var count = 0;
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var testcases = new Array();
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function myStringSlice(a, from, to)
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{
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var from2 = from;
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var to2 = to;
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var returnString = new String("");
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var i;
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if (from2 < 0) from2 = a.length + from;
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if (to2 < 0) to2 = a.length + to;
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if ((to2 > from2)&&(to2 > 0)&&(from2 < a.length))
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{
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if (from2 < 0) from2 = 0;
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if (to2 > a.length) to2 = a.length;
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for (i = from2; i < to2; ++i) returnString += a.charAt(i);
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}
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return returnString;
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}
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// This function tests the slice command on a String
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// passed in. The arguments passed into slice range in
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// value from -5 to the length of the array + 4. Every
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// combination of the two arguments is tested. The expected
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// result of the slice(...) method is calculated and
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// compared to the actual result from the slice(...) method.
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// If the Strings are not similar false is returned.
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function exhaustiveStringSliceTest(testname, a)
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{
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var x = 0;
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var y = 0;
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var errorMessage;
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var reason = "";
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var passed = true;
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for (x = -(2 + a.length); x <= (2 + a.length); x++)
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for (y = (2 + a.length); y >= -(2 + a.length); y--)
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{
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var b = a.slice(x,y);
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var c = myStringSlice(a,x,y);
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if (String(b) != String(c))
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{
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errorMessage =
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"ERROR: 'TEST FAILED' ERROR: 'TEST FAILED' ERROR: 'TEST FAILED'\n" +
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" test: " + "a.slice(" + x + "," + y + ")\n" +
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" a: " + String(a) + "\n" +
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" actual result: " + String(b) + "\n" +
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" expected result: " + String(c) + "\n";
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writeHeaderToLog(errorMessage);
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reason = reason + errorMessage;
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passed = false;
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}
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}
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var testCase = new TestCase(SECTION, testname, true, passed);
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if (passed == false)
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testCase.reason = reason;
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return testCase;
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}
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var a = new String("abcdefghijklmnopqrstuvwxyz1234567890");
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var b = new String("this is a test string");
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testcases[count++] = exhaustiveStringSliceTest("exhaustive String.slice test 1", a);
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testcases[count++] = exhaustiveStringSliceTest("exhaustive String.slice test 2", b);
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function test()
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{
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for ( tc=0; tc < testcases.length; tc++ ) {
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testcases[tc].passed = writeTestCaseResult(
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testcases[tc].expect,
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testcases[tc].actual,
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testcases[tc].description +" = "+
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testcases[tc].actual );
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testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
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}
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stopTest();
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return ( testcases );
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}
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test();
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