writeFile.test.js

var fs = require('fs');
var expect = require('chai').expect;
var { createDirIfNotExists, writeJSON } = require('../writeFile.js');


describe('createDirIfNotExists', function () {
    context('without arguments', function () {
        it('should throw error if path is null', async function () {

            return createDirIfNotExists()
                .then()
                .catch(function (err) {
                    // add an assertion to check the error
                    expect(function () { throw err })
                        .to.throw(Error, "Path should not be null");
                })
        });
    })

    context('with arguments', function () {
        it('should return path of dir that is passed', async function () {
            let path = "Users/user/codes/sarojtask/a/b/c";
            let dirPath = await createDirIfNotExists(path);
            expect(dirPath).to.be.equal(path)
            expect(fs.existsSync(path)).to.be.true
        });
    })

});

describe('writeJSON', function () {
    context('with wrong arguments', function () {
        it('should throw error if data is not object', async function () {

            return writeJSON("/Users/user/codes/sarojtask/a/tes.json", "name")
                .catch(function (err) {
                    // add an assertion to check the error
                    expect(function () { throw err })
                        .to.throw(Error, "Invalid data");
                })
        });
    })

    context('with correct arguments', function () {
        it('should create a file under passed dir path', async function () {
            let filePath = "/Users/user/codes/sarojtask/a/b/c/test.json";

            writeJSON(filePath, { name: "test" }).then(result => {

                expect(fs.existsSync(filePath)).to.be.true

            })

        });
    })

});