var assert = require('assert'),
    fs = require('fs'),
    path = require('path'),
    nodeunit = require('../lib/nodeunit');


var setup = function (fn) {
    return function (test) {
        process.chdir(__dirname);
        var env = {
            mock_module1: require(__dirname + '/fixtures/mock_module1'),
            mock_module2: require(__dirname + '/fixtures/mock_module2'),
            mock_module3: require(__dirname + '/fixtures/dir/mock_module3'),
            mock_module4: require(__dirname + '/fixtures/dir/mock_module4')
        };
        fn.call(env, test);
    };
};


exports.testRunFiles = setup(function (test) {
    test.expect(24);
    var runModule_copy = nodeunit.runModule;

    var runModule_calls = [];
    var modules = [];

    var opts = {
        moduleStart: function () {
            return 'moduleStart';
        },
        testDone: function () {
            return 'testDone';
        },
        testStart: function () {
            return 'testStart';
        },
        log: function () {
            return 'log';
        },
        done: function (assertions) {
            test.equals(assertions.failures(), 0, 'failures');
            test.equals(assertions.length, 4, 'length');
            test.ok(typeof assertions.duration === "number");

            var called_with = function (name) {
                return runModule_calls.some(function (m) {
                    return m.name === name;
                });
            };
            test.ok(called_with('mock_module1'), 'mock_module1 ran');
            test.ok(called_with('mock_module2'), 'mock_module2 ran');
            test.ok(called_with('mock_module3'), 'mock_module3 ran');
            test.ok(called_with('mock_module4'), 'mock_module4 ran');
            test.equals(runModule_calls.length, 4);

            nodeunit.runModule = runModule_copy;
            test.done();
        }
    };

    nodeunit.runModule = function (name, mod, options, callback) {
        test.equals(options.testDone, opts.testDone);
        test.equals(options.testStart, opts.testStart);
        test.equals(options.log, opts.log);
        test.ok(typeof name === "string");
        runModule_calls.push(mod);
        var m = [{failed: function () {
            return false;
        }}];
        modules.push(m);
        callback(null, m);
    };

    nodeunit.runFiles(
        [__dirname + '/fixtures/mock_module1.js',
         __dirname + '/fixtures/mock_module2.js',
         __dirname + '/fixtures/dir'],
        opts
    );
});

exports.testRunFilesEmpty = function (test) {
    test.expect(3);
    nodeunit.runFiles([], {
        moduleStart: function () {
            test.ok(false, 'should not be called');
        },
        testDone: function () {
            test.ok(false, 'should not be called');
        },
        testStart: function () {
            test.ok(false, 'should not be called');
        },
        log: function () {
            test.ok(false, 'should not be called');
        },
        done: function (assertions) {
            test.equals(assertions.failures(), 0, 'failures');
            test.equals(assertions.length, 0, 'length');
            test.ok(typeof assertions.duration === "number");
            test.done();
        }
    });
};


exports.testEmptyDir = function (test) {
    var dir2 = __dirname + '/fixtures/dir2';

    // git doesn't like empty directories, so we have to create one
    path.exists(dir2, function (exists) {
        if (!exists) {
            fs.mkdirSync(dir2, 0777);
        }

        // runFiles on empty directory:
        nodeunit.runFiles([dir2], {
            moduleStart: function () {
                test.ok(false, 'should not be called');
            },
            testDone: function () {
                test.ok(false, 'should not be called');
            },
            testStart: function () {
                test.ok(false, 'should not be called');
            },
            log: function () {
                test.ok(false, 'should not be called');
            },
            done: function (assertions) {
                test.equals(assertions.failures(), 0, 'failures');
                test.equals(assertions.length, 0, 'length');
                test.ok(typeof assertions.duration === "number");
                test.done();
            }
        });
    });
};


var CoffeeScript;
try {
    CoffeeScript = require('coffee-script');
} catch (e) {
}

if (CoffeeScript) {
    exports.testCoffeeScript = function (test) {
        process.chdir(__dirname);
        var env = {
            mock_coffee_module: require(__dirname +
                                        '/fixtures/coffee/mock_coffee_module')
        };

        test.expect(9);
        var runModule_copy = nodeunit.runModule;

        var runModule_calls = [];
        var modules = [];

        var opts = {
            moduleStart: function () {
                return 'moduleStart';
            },
            testDone: function () {
                return 'testDone';
            },
            testStart: function () {
                return 'testStart';
            },
            log: function () {
                return 'log';
            },
            done: function (assertions) {
                test.equals(assertions.failures(), 0, 'failures');
                test.equals(assertions.length, 1, 'length');
                test.ok(typeof assertions.duration === "number");

                var called_with = function (name) {
                    return runModule_calls.some(function (m) {
                        return m.name === name;
                    });
                };
                test.ok(
                    called_with('mock_coffee_15'),
                    'mock_coffee_module ran'
                );
                test.equals(runModule_calls.length, 1);

                nodeunit.runModule = runModule_copy;
                test.done();
            }
        };

        nodeunit.runModule = function (name, mod, options, callback) {
            test.equals(options.testDone, opts.testDone);
            test.equals(options.testStart, opts.testStart);
            test.equals(options.log, opts.log);
            test.ok(typeof name === "string");
            runModule_calls.push(mod);
            var m = [{failed: function () {
                return false;
            }}];
            modules.push(m);
            callback(null, m);
        };

        nodeunit.runFiles(
            [__dirname + 'fixtures/coffee/mock_coffee_module.coffee'],
            opts
        );
    };
}