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nodejs express mock data in memory db

DreamCoder answered on March 12, 2023 Popularity 1/10 Helpfulness 1/10

answer nodejs express mock data in memory db

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nodejs express mock data in memory db

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// tests/db-handler.js

const mongoose = require('mongoose');
const { MongoMemoryServer } = require('mongodb-memory-server');

const mongod = new MongoMemoryServer();

/**
 * Connect to the in-memory database.
 */
module.exports.connect = async () => {
    const uri = await mongod.getConnectionString();

    const mongooseOpts = {
        useNewUrlParser: true,
        autoReconnect: true,
        reconnectTries: Number.MAX_VALUE,
        reconnectInterval: 1000
    };

    await mongoose.connect(uri, mongooseOpts);
}

/**
 * Drop database, close the connection and stop mongod.
 */
module.exports.closeDatabase = async () => {
    await mongoose.connection.dropDatabase();
    await mongoose.connection.close();
    await mongod.stop();
}

/**
 * Remove all the data for all db collections.
 */
module.exports.clearDatabase = async () => {
    const collections = mongoose.connection.collections;

    for (const key in collections) {
        const collection = collections[key];
        await collection.deleteMany();
    }
}

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: dev.to

Tags: express in-memory javascript

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Contributed on Mar 12 2023

DreamCoder

0 Answers Avg Quality 2/10

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nodejs express mock data in memory db

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// tests/product.test.js

const mongoose = require('mongoose');

const dbHandler = require('./db-handler');
const productService = require('../src/services/product');
const productModel = require('../src/models/product');

/**
 * Connect to a new in-memory database before running any tests.
 */
beforeAll(async () => await dbHandler.connect());

/**
 * Clear all test data after every test.
 */
afterEach(async () => await dbHandler.clearDatabase());

/**
 * Remove and close the db and server.
 */
afterAll(async () => await dbHandler.closeDatabase());

/**
 * Product test suite.
 */
describe('product ', () => {

    /**
     * Tests that a valid product can be created through the productService without throwing any errors.
     */
    it('can be created correctly', async () => {
        expect(async () => await productService.create(productComplete))
            .not
            .toThrow();
    });
});

/**
 * Complete product example.
 */
const productComplete = {
    name: 'iPhone 11',
    price: 699,
    description: 'A new dual‑camera system captures more of what you see and love. '
};

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: dev.to

Tags: express in-memory javascript

Link to this answer
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Contributed on Mar 12 2023

DreamCoder

0 Answers Avg Quality 2/10

nodejs express mock data in memory db

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