support default values (#4442)

test/mocha/getter-setter.js

@@ -3,7 +3,7 @@ var UglifyJS = require("../node");
 
 describe("Getters and setters", function() {
     it("Should not accept operator symbols as getter/setter name", function() {
-        var illegalOperators = [
+        [
             "++",
             "--",
             "+",
@@ -42,43 +42,26 @@ describe("Getters and setters", function() {
             "&=",
             "&&",
             "||"
-        ];
-        var generator = function() {
-            var results = [];
-
-            for (var i in illegalOperators) {
-                results.push({
-                    code: "var obj = { get " + illegalOperators[i] + "() { return test; }};",
-                    operator: illegalOperators[i],
-                    method: "get"
-                });
-                results.push({
-                    code: "var obj = { set " + illegalOperators[i] + "(value) { test = value}};",
-                    operator: illegalOperators[i],
-                    method: "set"
-                });
-            }
-
-            return results;
-        };
-        var testCase = function(data) {
-            return function() {
-                UglifyJS.parse(data.code);
-            };
-        };
-        var fail = function(data) {
-            return function(e) {
+        ].reduce(function(tests, illegalOperator) {
+            tests.push({
+                code: "var obj = { get " + illegalOperator + "() { return test; }};",
+                operator: illegalOperator,
+            });
+            tests.push({
+                code: "var obj = { set " + illegalOperator + "(value) { test = value; }};",
+                operator: illegalOperator,
+            });
+            return tests;
+        }, []).forEach(function(test) {
+            assert.throws(function() {
+                UglifyJS.parse(test.code);
+            }, test.operator == "=" ? function(e) {
                 return e instanceof UglifyJS.JS_Parse_Error
-                    && e.message === "Unexpected token: operator «" + data.operator + "»";
-            };
-        };
-        var errorMessage = function(data) {
-            return "Expected but didn't get a syntax error while parsing following line:\n" + data.code;
-        };
-        var tests = generator();
-        for (var i = 0; i < tests.length; i++) {
-            var test = tests[i];
-            assert.throws(testCase(test), fail(test), errorMessage(test));
-        }
+                    && /^Unexpected token: punc «{», expected: punc «.*?»$/.test(e.message);
+            } : function(e) {
+                return e instanceof UglifyJS.JS_Parse_Error
+                    && e.message === "Unexpected token: operator «" + test.operator + "»";
+            }, "Expected but didn't get a syntax error while parsing following line:\n" + test.code);
+        });
     });
 });