test(cli): Test CLI config from arguments and prompt

packages/cli/cli.js

@@ -4,8 +4,6 @@ const program = require('commander');
 const inquirer = require('inquirer');
 const chalk = require('chalk');
 const latestSemver = require('latest-semver');
-const loadJsonFile = require('load-json-file');
-const algoliasearch = require('algoliasearch');
 
 const createInstantSearchApp = require('../create-instantsearch-app');
 const {
@@ -16,7 +14,12 @@ const {
   getAllTemplates,
   getTemplatePath,
 } = require('../shared/utils');
-const { getOptionsFromArguments, isQuestionAsked } = require('./utils');
+const {
+  getOptionsFromArguments,
+  getAttributesFromAnswers,
+  isQuestionAsked,
+  getConfiguration,
+} = require('./utils');
 const { version } = require('../../package.json');
 
 let appPath;
@@ -74,7 +77,8 @@ if (!appPath) {
   process.exit(1);
 }
 
-const appName = path.basename(appPath);
+const optionsFromArguments = getOptionsFromArguments(options.rawArgs);
+const appName = optionsFromArguments.name || path.basename(appPath);
 
 try {
   checkAppPath(appPath);
@@ -86,8 +90,6 @@ try {
   process.exit(1);
 }
 
-const optionsFromArguments = getOptionsFromArguments(options.rawArgs);
-
 const questions = [
   {
     type: 'list',
@@ -164,66 +166,22 @@ const questions = [
     type: 'list',
     name: 'mainAttribute',
     message: 'Attribute to display',
-    choices: async answers => {
-      const client = algoliasearch(answers.appId, answers.apiKey);
-      const index = client.initIndex(answers.indexName);
-      const defaultAttributes = ['title', 'name', 'description'];
-      let attributes = [];
-
-      try {
-        const { hits } = await index.search({ hitsPerPage: 1 });
-        const [firstHit] = hits;
-        attributes = Object.keys(firstHit._highlightResult).sort(
-          value => !defaultAttributes.includes(value)
-        );
-      } catch (err) {
-        attributes = defaultAttributes;
-      }
-
-      return attributes;
-    },
+    choices: async answers => await getAttributesFromAnswers(answers),
     when: ({ appId, apiKey, indexName }) => appId && apiKey && indexName,
   },
 ].filter(question => isQuestionAsked({ question, args: optionsFromArguments }));
 
-async function getConfig() {
-  let config;
-
-  if (optionsFromArguments.config) {
-    // Get config from configuration file given as an argument
-    config = await loadJsonFile(optionsFromArguments.config);
-  } else {
-    // Get config from the arguments and the prompt
-    config = {
-      ...optionsFromArguments,
-      ...(await inquirer.prompt(questions)),
-    };
-  }
-
-  const templatePath = getTemplatePath(config.template);
-  let libraryVersion = config.libraryVersion;
-
-  if (!libraryVersion) {
-    const templateConfig = getAppTemplateConfig(templatePath);
-
-    libraryVersion = await fetchLibraryVersions(
-      templateConfig.libraryName
-    ).then(latestSemver);
-  }
-
-  return {
-    ...config,
-    libraryVersion,
-    name: config.name || appName,
-    template: templatePath,
-  };
-}
-
 async function run() {
   console.log(`Creating a new InstantSearch app in ${chalk.green(appPath)}.`);
 
   const config = {
-    ...(await getConfig()),
+    ...(await getConfiguration({
+      options: {
+        ...optionsFromArguments,
+        name: appName,
+      },
+      answers: await inquirer.prompt(questions),
+    })),
     installation: program.installation,
   };
 

packages/cli/utils.js

@@ -1,3 +1,13 @@
+const algoliasearch = require('algoliasearch');
+const latestSemver = require('latest-semver');
+const loadJsonFile = require('load-json-file');
+
+const {
+  getAppTemplateConfig,
+  fetchLibraryVersions,
+  getTemplatePath,
+} = require('../shared/utils');
+
 function camelCase(string) {
   return string.replace(/-([a-z])/g, str => str[1].toUpperCase());
 }
@@ -22,7 +32,40 @@ function getOptionsFromArguments(rawArgs) {
   }, {});
 }
 
+async function getAttributesFromAnswers({
+  appId,
+  apiKey,
+  indexName,
+  algoliasearchFn = algoliasearch,
+} = {}) {
+  const client = algoliasearchFn(appId, apiKey);
+  const defaultAttributes = ['title', 'name', 'description'];
+  let attributes = [];
+
+  try {
+    const { hits } = await client.search({ indexName, hitsPerPage: 1 });
+    const [firstHit] = hits;
+    const highlightedAttributes = Object.keys(firstHit._highlightResult);
+    attributes = [
+      ...new Set([
+        ...defaultAttributes.map(
+          attribute => highlightedAttributes.includes(attribute) && attribute
+        ),
+        ...highlightedAttributes,
+      ]),
+    ];
+  } catch (err) {
+    attributes = defaultAttributes;
+  }
+
+  return attributes;
+}
+
 function isQuestionAsked({ question, args }) {
+  if (args.config) {
+    return false;
+  }
+
   for (const optionName in args) {
     if (question.name === optionName) {
       // Skip if the arg in the command is valid
@@ -38,8 +81,41 @@ function isQuestionAsked({ question, args }) {
   return true;
 }
 
+async function getConfiguration({
+  options = {},
+  answers = {},
+  loadJsonFileFn = loadJsonFile,
+} = {}) {
+  const config = options.config
+    ? await loadJsonFileFn(options.config) // From configuration file given as an argument
+    : { ...options, ...answers }; // From the arguments and the prompt
+
+  if (!config.template) {
+    throw new Error('The template is required in the config.');
+  }
+
+  const templatePath = getTemplatePath(config.template);
+  let { libraryVersion } = config;
+
+  if (!libraryVersion) {
+    const templateConfig = getAppTemplateConfig(templatePath);
+
+    libraryVersion = await fetchLibraryVersions(
+      templateConfig.libraryName
+    ).then(latestSemver);
+  }
+
+  return {
+    ...config,
+    libraryVersion,
+    template: templatePath,
+  };
+}
+
 module.exports = {
   camelCase,
   getOptionsFromArguments,
+  getAttributesFromAnswers,
   isQuestionAsked,
+  getConfiguration,
 };

packages/cli/utils.test.js

@@ -1,3 +1,4 @@
+const path = require('path');
 const utils = require('./utils');
 
 describe('getOptionsFromArguments', () => {
@@ -79,7 +80,52 @@ describe('getOptionsFromArguments', () => {
   });
 });
 
-describe('isQuestionAsked', () => {
+describe('getAttributesFromAnswers', () => {
+  const algoliasearchSuccessFn = () => ({
+    search: jest.fn(() => ({
+      hits: [
+        {
+          _highlightResult: {
+            brand: 'brand',
+            description: 'description',
+            name: 'name',
+            title: 'title',
+          },
+        },
+      ],
+    })),
+  });
+
+  const algoliasearchFailureFn = () => ({
+    search: jest.fn(() => {
+      throw new Error();
+    }),
+  });
+
+  test('with search success should fetch attributes', async () => {
+    const attributes = await utils.getAttributesFromAnswers({
+      appId: 'appId',
+      apiKey: 'apiKey',
+      indexName: 'indexName',
+      algoliasearchFn: algoliasearchSuccessFn,
+    });
+
+    expect(attributes).toEqual(['title', 'name', 'description', 'brand']);
+  });
+
+  test('with search failure should return default attributes', async () => {
+    const attributes = await utils.getAttributesFromAnswers({
+      appId: 'appId',
+      apiKey: 'apiKey',
+      indexName: 'indexName',
+      algoliasearchFn: algoliasearchFailureFn,
+    });
+
+    expect(attributes).toEqual(['title', 'name', 'description']);
+  });
+});
+
+test('isQuestionAsked', () => {
   expect(
     utils.isQuestionAsked({
       question: { name: 'appId', validate: input => Boolean(input) },
@@ -137,3 +183,72 @@ describe('camelCase', () => {
     expect(utils.camelCase('instant-search-js')).toBe('instantSearchJs');
   });
 });
+
+describe('getConfiguration', () => {
+  test('without template throws', async () => {
+    expect.assertions(1);
+
+    try {
+      await utils.getConfiguration({});
+    } catch (err) {
+      expect(err.message).toBe('The template is required in the config.');
+    }
+  });
+
+  test('with template transforms to its relative path', async () => {
+    const configuration = await utils.getConfiguration({
+      answers: { template: 'InstantSearch.js' },
+    });
+
+    expect(configuration).toEqual(
+      expect.objectContaining({
+        template: path.resolve('templates/InstantSearch.js'),
+      })
+    );
+  });
+
+  test('with options from arguments and prompt merge', async () => {
+    const configuration = await utils.getConfiguration({
+      options: {
+        name: 'my-app',
+      },
+      answers: {
+        template: 'InstantSearch.js',
+        libraryVersion: '1.0.0',
+      },
+    });
+
+    expect(configuration).toEqual(
+      expect.objectContaining({
+        name: 'my-app',
+        libraryVersion: '1.0.0',
+      })
+    );
+  });
+
+  test('with config file overrides all options', async () => {
+    const loadJsonFileFn = jest.fn(x => Promise.resolve(x));
+    const ignoredOptions = {
+      libraryVersion: '2.0.0',
+    };
+    const options = {
+      config: {
+        template: 'InstantSearch.js',
+        libraryVersion: '1.0.0',
+      },
+      ...ignoredOptions,
+    };
+    const answers = {
+      ignoredKey: 'ignoredValue',
+    };
+
+    const configuration = await utils.getConfiguration({
+      options,
+      answers,
+      loadJsonFileFn,
+    });
+
+    expect(configuration).toEqual(expect.not.objectContaining(ignoredOptions));
+    expect(configuration).toEqual(expect.not.objectContaining(answers));
+  });
+});