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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 parentheses 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);
});
});
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