var assert = require("assert"); var UglifyJS = require("../.."); describe("parentheses", function() { it("Should add trailing parentheses for new expressions with zero arguments in beautify mode", function() { var tests = [ "new x(1);", "new x;", "new new x;", "new (function(foo){this.foo=foo;})(1);", "new (function(foo){this.foo=foo;})();", "new (function test(foo){this.foo=foo;})(1);", "new (function test(foo){this.foo=foo;})();", "new true;", "new (0);", "new (!0);", "new (bar = function(foo) {this.foo=foo;})(123);", "new (bar = function(foo) {this.foo=foo;})();" ]; var expected = [ "new x(1);", "new x();", "new new x()();", "new function(foo) {\n this.foo = foo;\n}(1);", "new function(foo) {\n this.foo = foo;\n}();", "new function test(foo) {\n this.foo = foo;\n}(1);", "new function test(foo) {\n this.foo = foo;\n}();", "new true();", "new 0();", "new (!0)();", "new (bar = function(foo) {\n this.foo = foo;\n})(123);", "new (bar = function(foo) {\n this.foo = foo;\n})();" ]; for (var i = 0; i < tests.length; i++) { assert.strictEqual( UglifyJS.minify(tests[i], { output: {beautify: true}, compress: false, mangle: false }).code, expected[i] ); } }); it("Should not add trailing parentheses for new expressions with zero arguments in non-beautify mode", function() { var tests = [ "new x(1);", "new x;", "new new x;", "new (function(foo){this.foo=foo;})(1);", "new (function(foo){this.foo=foo;})();", "new (function test(foo){this.foo=foo;})(1);", "new (function test(foo){this.foo=foo;})();", "new true;", "new (0);", "new (!0);", "new (bar = function(foo) {this.foo=foo;})(123);", "new (bar = function(foo) {this.foo=foo;})();" ]; var expected = [ "new x(1);", "new x;", "new(new x);", "new function(foo){this.foo=foo}(1);", "new function(foo){this.foo=foo};", "new function test(foo){this.foo=foo}(1);", "new function test(foo){this.foo=foo};", "new true;", "new 0;", "new(!0);", "new(bar=function(foo){this.foo=foo})(123);", "new(bar=function(foo){this.foo=foo});" ]; for (var i = 0; i < tests.length; i++) { assert.strictEqual( UglifyJS.minify(tests[i], { output: {beautify: false}, compress: false, mangle: false }).code, expected[i] ); } }); it("Should compress leading parenthesis with reasonable performance", function() { this.timeout(30000); var code = [ "({}?0:1)&&x();", "(function(){}).name;", ]; for (var i = 16; --i >= 0;) { code = code.concat(code); } code = code.join(""); var result = UglifyJS.minify(code, { compress: false, mangle: false, }); if (result.error) throw result.error; // Dismal performance for `assert.strictEqual()` in Node.js 6 assert.ok(result.code === code); }); }); ..