spec/fixture-helper.js

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    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
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    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); you may not use this file except in compliance
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    http://www.apache.org/licenses/LICENSE-2.0

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const fs = require('fs-extra');
const path = require('path');
const { ConfigParser, events } = require('cordova-common');
const platformAdd = require('../src/cordova/platform').add;
const HooksRunner = require('../src/hooks/HooksRunner');

/**
 * Creates a function that provides access to various fixtures by name.
 *
 * @param {Function} tmpDir creates a temp dir when called and returns its path
 * @returns {Function} that provides access to various fixtures by name
 */
module.exports = function fixtureHelper (tmpDir) {
    let fixturesBaseDir;

    // Setup and teardown the directory where we setup our fixtures
    beforeAll(() => { fixturesBaseDir = tmpDir(); });
    afterAll(() => fs.removeSync(fixturesBaseDir));

    // The recipes for building the different kinds of fixture.
    // Resolve to the fixture path.
    const fixtureConstructors = {
        // Creates a stand-alone cordova-android app (platform-centered)
        androidApp () {
            const PlatformApi = require('cordova-android');
            const appPath = path.join(fixturesBaseDir, 'android-app');

            // We need to provide a ConfigParser instance to createPlatform :(
            const cfgXmlPath = require.resolve('cordova-android/templates/project/res/xml/config.xml');
            const config = new ConfigParser(cfgXmlPath);

            // Create the app folder and return its path
            return PlatformApi.createPlatform(appPath, config, null, events)
                // Make our node_modules accessible from the app dir to make
                // platform modules work when they are required from the app dir.
                .then(_ => linkToGlobalModulesFrom(appPath))
                .then(_ => appPath);
        },

        // Creates a cordova project with one platform installed
        async projectWithPlatform () {
            const projectFixture = path.join(__dirname, 'cordova/fixtures/basePkgJson');
            const projectPath = path.join(fixturesBaseDir, 'project-with-platform');

            fs.copySync(projectFixture, projectPath);
            process.chdir(projectPath);

            // Talk about a clunky interface :(
            const platforms = ['android'];
            const opts = { platforms, save: true };
            const hooksRunner = new HooksRunner(projectPath);
            await platformAdd(hooksRunner, projectPath, platforms, opts);

            return projectPath;
        },

        androidPlatform () {
            return path.dirname(require.resolve('cordova-android/package'));
        }
    };

    // The fixture cache; contains promises to paths of already created fixtures
    const fixturePromises = {};

    // Finally, the public interface we provide our consumers. We intentionally
    // provide only a method to copy the fixtures, so that tests cannot alter
    // the global fixtures in any way.
    return function getFixture (name) {
        if (!(name in fixturePromises)) {
            fixturePromises[name] = Promise.resolve(fixtureConstructors[name]());
        }
        return {
            async copyTo (targetPath) {
                const fixturePath = await fixturePromises[name];
                fs.copySync(fixturePath, targetPath);
                return targetPath;
            }
        };
    };
};

function linkToGlobalModulesFrom (dir) {
    return fs.symlink(
        path.join(__dirname, '../node_modules'),
        path.join(dir, 'node_modules'),
        'junction'
    );
}