UglifyJS/test/mocha/cli.js

var assert = require("assert");
var exec = require("child_process").exec;
var readFileSync = require("fs").readFileSync;

function read(path) {
    return readFileSync(path, "utf8");
}

describe("bin/uglifyjs", function () {
    var uglifyjscmd = '"' + process.argv[0] + '" bin/uglifyjs';
    it("should produce a functional build when using --self", function (done) {
        this.timeout(15000);

        var command = uglifyjscmd + ' --self -cm --wrap WrappedUglifyJS';

        exec(command, function (err, stdout) {
            if (err) throw err;

            eval(stdout);

            assert.strictEqual(typeof WrappedUglifyJS, 'object');
            assert.strictEqual(true, WrappedUglifyJS.parse('foo;') instanceof WrappedUglifyJS.AST_Node);

            done();
        });
    });
    it("Should be able to filter comments correctly with `--comments all`", function (done) {
        var command = uglifyjscmd + ' test/input/comments/filter.js --comments all';

        exec(command, function (err, stdout) {
            if (err) throw err;

            assert.strictEqual(stdout, "// foo\n/*@preserve*/\n// bar\n\n");
            done();
        });
    });
    it("Should be able to filter comments correctly with `--comment <RegExp>`", function (done) {
        var command = uglifyjscmd + ' test/input/comments/filter.js --comments /r/';

        exec(command, function (err, stdout) {
            if (err) throw err;

            assert.strictEqual(stdout, "/*@preserve*/\n// bar\n\n");
            done();
        });
    });
    it("Should be able to filter comments correctly with just `--comment`", function (done) {
        var command = uglifyjscmd + ' test/input/comments/filter.js --comments';

        exec(command, function (err, stdout) {
            if (err) throw err;

            assert.strictEqual(stdout, "/*@preserve*/\n\n");
            done();
        });
    });
    it("Should append source map to output when using --source-map url=inline", function (done) {
       var command = uglifyjscmd + " test/input/issue-1323/sample.js --source-map url=inline";

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, "var bar=function(){function foo(bar){return bar}return foo}();\n" +
               "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxHQUFJQSxLQUFNLFdBQ04sUUFBU0MsS0FBS0QsS0FDVixNQUFPQSxLQUdYLE1BQU9DIn0=\n");
           done();
       });
    });
    it("should not append source map to output when not using --source-map url=inline", function (done) {
        var command = uglifyjscmd + ' test/input/issue-1323/sample.js';

        exec(command, function (err, stdout) {
            if (err) throw err;

            assert.strictEqual(stdout, "var bar=function(){function foo(bar){return bar}return foo}();\n");
            done();
        });
    });
    it("Should work with --keep-fnames (mangle only)", function (done) {
       var command = uglifyjscmd + ' test/input/issue-1431/sample.js --keep-fnames -m';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
           done();
       });
    });
    it("Should work with --keep-fnames (mangle & compress)", function (done) {
       var command = uglifyjscmd + ' test/input/issue-1431/sample.js --keep-fnames -m -c unused=false';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(5==f(g)());\n");
           done();
       });
    });
    it("Should work with keep_fnames under mangler options", function (done) {
       var command = uglifyjscmd + ' test/input/issue-1431/sample.js -m keep_fnames=true';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
           done();
       });
    });
    it("Should work with --define (simple)", function (done) {
       var command = uglifyjscmd + ' test/input/global_defs/simple.js --define D=5 -c';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, "console.log(5);\n");
           done();
       });
    });
    it("Should work with --define (nested)", function (done) {
       var command = uglifyjscmd + ' test/input/global_defs/nested.js --define C.D=5,C.V=3 -c';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, "console.log(3,5);\n");
           done();
       });
    });
    it("Should work with --define (AST_Node)", function (done) {
       var command = uglifyjscmd + ' test/input/global_defs/simple.js --define console.log=stdout.println -c';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, "stdout.println(D);\n");
           done();
       });
    });
    it("Should work with `--beautify`", function (done) {
       var command = uglifyjscmd + ' test/input/issue-1482/input.js -b';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, read("test/input/issue-1482/default.js"));
           done();
       });
    });
    it("Should work with `--beautify bracketize`", function (done) {
       var command = uglifyjscmd + ' test/input/issue-1482/input.js -b bracketize';

       exec(command, function (err, stdout) {
           if (err) throw err;

           assert.strictEqual(stdout, read("test/input/issue-1482/bracketize.js"));
           done();
       });
    });
    it("Should process inline source map", function(done) {
        var command = uglifyjscmd + " test/input/issue-520/input.js -mc toplevel --source-map content=inline,url=inline";

        exec(command, function (err, stdout) {
            if (err) throw err;

            assert.strictEqual(stdout, read("test/input/issue-520/output.js"));
            done();
        });
    });
    it("Should warn for missing inline source map", function(done) {
        var command = uglifyjscmd + " test/input/issue-1323/sample.js --source-map content=inline,url=inline";

        exec(command, function (err, stdout, stderr) {
            if (err) throw err;

            assert.strictEqual(stdout, [
                "var bar=function(){function foo(bar){return bar}return foo}();",
                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxHQUFJQSxLQUFNLFdBQ04sUUFBU0MsS0FBS0QsS0FDVixNQUFPQSxLQUdYLE1BQU9DIn0=",
                "",
            ].join("\n"));
            assert.strictEqual(stderr, "WARN: inline source map not found\n");
            done();
        });
    });
    it("Should fail with multiple input and inline source map", function(done) {
        var command = uglifyjscmd + " test/input/issue-520/input.js test/input/issue-520/output.js --source-map content=inline,url=inline";

        exec(command, function (err, stdout, stderr) {
            assert.ok(err);
            assert.strictEqual(stderr, "ERROR: inline source map only works with singular input\n");
            done();
        });
    });
    it("Should fail with acorn and inline source map", function(done) {
        var command = uglifyjscmd + " test/input/issue-520/input.js --source-map content=inline,url=inline -p acorn";

        exec(command, function (err, stdout, stderr) {
            assert.ok(err);
            assert.strictEqual(stderr, "ERROR: inline source map only works with built-in parser\n");
            done();
        });
    });
    it("Should fail with SpiderMonkey and inline source map", function(done) {
        var command = uglifyjscmd + " test/input/issue-520/input.js --source-map content=inline,url=inline -p spidermonkey";

        exec(command, function (err, stdout, stderr) {
            assert.ok(err);
            assert.strictEqual(stderr, "ERROR: inline source map only works with built-in parser\n");
            done();
        });
    });
    it("Should fail with invalid syntax", function(done) {
        var command = uglifyjscmd + ' test/input/invalid/simple.js';

        exec(command, function (err, stdout, stderr) {
            assert.ok(err);
            var lines = stderr.split(/\n/);
            assert.strictEqual(lines[0], "Parse error at test/input/invalid/simple.js:1,12");
            assert.strictEqual(lines[1], "function f(a{}");
            assert.strictEqual(lines[2], "            ^");
            assert.strictEqual(lines[3], "ERROR: Unexpected token punc «{», expected punc «,»");
            done();
        });
    });
    it("Should fail with correct marking of tabs", function(done) {
        var command = uglifyjscmd + ' test/input/invalid/tab.js';

        exec(command, function (err, stdout, stderr) {
            assert.ok(err);
            var lines = stderr.split(/\n/);
            assert.strictEqual(lines[0], "Parse error at test/input/invalid/tab.js:1,12");
            assert.strictEqual(lines[1], "\t\tfoo(\txyz, 0abc);");
            assert.strictEqual(lines[2], "\t\t    \t     ^");
            assert.strictEqual(lines[3], "ERROR: Invalid syntax: 0abc");
            done();
        });
    });
    it("Should fail with correct marking at start of line", function(done) {
        var command = uglifyjscmd + ' test/input/invalid/eof.js';

        exec(command, function (err, stdout, stderr) {
            assert.ok(err);
            var lines = stderr.split(/\n/);
            assert.strictEqual(lines[0], "Parse error at test/input/invalid/eof.js:2,0");
            assert.strictEqual(lines[1], "foo, bar(");
            assert.strictEqual(lines[2], "         ^");
            assert.strictEqual(lines[3], "ERROR: Unexpected token: eof (undefined)");
            done();
        });
    });
    it("Should fail with a missing loop body", function(done) {
        var command = uglifyjscmd + ' test/input/invalid/loop-no-body.js';

        exec(command, function (err, stdout, stderr) {
            assert.ok(err);
            var lines = stderr.split(/\n/);
            assert.strictEqual(lines[0], "Parse error at test/input/invalid/loop-no-body.js:2,0");
            assert.strictEqual(lines[1], "for (var i = 0; i < 1; i++) ");
            assert.strictEqual(lines[2], "                            ^");
            assert.strictEqual(lines[3], "ERROR: Unexpected token: eof (undefined)");
            done();
        });
    });
    it("Should throw syntax error (5--)", function(done) {
       var command = uglifyjscmd + ' test/input/invalid/assign_1.js';

       exec(command, function (err, stdout, stderr) {
           assert.ok(err);
           assert.strictEqual(stdout, "");
           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
               "Parse error at test/input/invalid/assign_1.js:1,18",
               "console.log(1 || 5--);",
               "                  ^",
               "ERROR: Invalid use of -- operator"
           ].join("\n"));
           done();
       });
    });
    it("Should throw syntax error (Math.random() /= 2)", function(done) {
       var command = uglifyjscmd + ' test/input/invalid/assign_2.js';

       exec(command, function (err, stdout, stderr) {
           assert.ok(err);
           assert.strictEqual(stdout, "");
           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
               "Parse error at test/input/invalid/assign_2.js:1,32",
               "console.log(2 || (Math.random() /= 2));",
               "                                ^",
               "ERROR: Invalid assignment"
           ].join("\n"));
           done();
       });
    });
    it("Should throw syntax error (++this)", function(done) {
       var command = uglifyjscmd + ' test/input/invalid/assign_3.js';

       exec(command, function (err, stdout, stderr) {
           assert.ok(err);
           assert.strictEqual(stdout, "");
           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
               "Parse error at test/input/invalid/assign_3.js:1,18",
               "console.log(3 || ++this);",
               "                  ^",
               "ERROR: Invalid use of ++ operator"
           ].join("\n"));
           done();
       });
    });
    it("Should handle literal string as source map input", function(done) {
        var command = [
            uglifyjscmd,
            "test/input/issue-1236/simple.js",
            "--source-map",
            'content="' + read_map() + '",url=inline'
        ].join(" ");

        exec(command, function (err, stdout) {
            if (err) throw err;

            assert.strictEqual(stdout, [
                '"use strict";var foo=function foo(x){return"foo "+x};console.log(foo("bar"));',
                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImluZGV4LmpzIl0sIm5hbWVzIjpbImZvbyIsIngiLCJjb25zb2xlIiwibG9nIl0sIm1hcHBpbmdzIjoiWUFBQSxJQUFJQSxLQUFNLFFBQU5BLEtBQU1DLEdBQUEsTUFBSyxPQUFTQSxFQUN4QkMsU0FBUUMsSUFBSUgsSUFBSSJ9",
                ""
            ].join("\n"));
            done();
        });

        function read_map() {
            var map = JSON.parse(read("./test/input/issue-1236/simple.js.map"));
            delete map.sourcesContent;
            return JSON.stringify(map).replace(/"/g, '\\"');
        }
    });
});