michael@0: /*
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/
michael@0:  */
michael@0: 
michael@0: var BUGNUMBER = 501739;
michael@0: var summary =
michael@0:   "String.prototype.replace should throw when called with a global RegExp " +
michael@0:   "whose .lastIndex is non-writable";
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: var s = '0x2x4x6x8';
michael@0: 
michael@0: // First time with .lastIndex === 0, replacing to ''
michael@0: 
michael@0: var p1 = /x/g;
michael@0: Object.defineProperty(p1, "lastIndex", { writable: false });
michael@0: 
michael@0: try
michael@0: {
michael@0:   s.replace(p1, '');
michael@0:   throw "didn't throw";
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e instanceof TypeError, true,
michael@0:            "should have thrown a TypeError, instead got: " + e);
michael@0:   assertEq(p1.lastIndex, 0);
michael@0: }
michael@0: 
michael@0: // Second time with .lastIndex !== 0, replacing to ''
michael@0: 
michael@0: var p2 = /x/g;
michael@0: Object.defineProperty(p2, "lastIndex", { writable: false, value: 3 });
michael@0: 
michael@0: try
michael@0: {
michael@0:   s.replace(p2, '');
michael@0:   throw "didn't throw";
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e instanceof TypeError, true,
michael@0:            "should have thrown a TypeError, instead got: " + e);
michael@0:   assertEq(p2.lastIndex, 3);
michael@0: }
michael@0: 
michael@0: // Third time with .lastIndex === 0, replacing to 'y'
michael@0: 
michael@0: var p3 = /x/g;
michael@0: Object.defineProperty(p3, "lastIndex", { writable: false });
michael@0: 
michael@0: try
michael@0: {
michael@0:   s.replace(p3, 'y');
michael@0:   throw "didn't throw";
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e instanceof TypeError, true,
michael@0:            "should have thrown a TypeError, instead got: " + e);
michael@0:   assertEq(p3.lastIndex, 0);
michael@0: }
michael@0: 
michael@0: // Fourth time with .lastIndex !== 0, replacing to 'y'
michael@0: 
michael@0: var p4 = /x/g;
michael@0: Object.defineProperty(p4, "lastIndex", { writable: false, value: 3 });
michael@0: 
michael@0: try
michael@0: {
michael@0:   s.replace(p4, '');
michael@0:   throw "didn't throw";
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e instanceof TypeError, true,
michael@0:            "should have thrown a TypeError, instead got: " + e);
michael@0:   assertEq(p4.lastIndex, 3);
michael@0: }
michael@0: 
michael@0: // Fifth time with .lastIndex === 0, replacing to 'y', but no match
michael@0: 
michael@0: var p5 = /q/g;
michael@0: Object.defineProperty(p5, "lastIndex", { writable: false });
michael@0: 
michael@0: try
michael@0: {
michael@0:   s.replace(p5, 'y');
michael@0:   throw "didn't throw";
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e instanceof TypeError, true,
michael@0:            "should have thrown a TypeError, instead got: " + e);
michael@0:   assertEq(p5.lastIndex, 0);
michael@0: }
michael@0: 
michael@0: // Sixth time with .lastIndex !== 0, replacing to 'y', but no match
michael@0: 
michael@0: var p6 = /q/g;
michael@0: Object.defineProperty(p6, "lastIndex", { writable: false, value: 3 });
michael@0: 
michael@0: try
michael@0: {
michael@0:   s.replace(p6, '');
michael@0:   throw "didn't throw";
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e instanceof TypeError, true,
michael@0:            "should have thrown a TypeError, instead got: " + e);
michael@0:   assertEq(p6.lastIndex, 3);
michael@0: }
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("Tests complete");