api.js/tests/load_json_test.js

"use strict";

(() => {
    const loadJSON = require('../src/json');

    const fs = require('fs'),
        chai = require('chai'),
        expect = chai.expect,
        should = chai.should();

    describe('Loading JSON file', () => {
        const filename = __dirname + '/fixtures/test1.json',
            expectedResult = JSON.parse(fs.readFileSync(filename, 'utf8'));

        // Check if stream method is available
        let testStream;
        try {
            require('JSONStream');
            require('event-stream');
            testStream = true;
        } catch (err) {
            testStream = false;
        }

        // Test with each method
        ['json', 'eval', 'stream'].forEach(method => {
            it(method, function(done) {
                if (method === 'stream' && !testStream) {
                    this.skip();
                    return;
                }

                // Load file
                loadJSON(method, filename).then(result => {
                    expect(result.changed).to.be.equal(true);
                    expect(result.data).to.be.eql(expectedResult);

                    // Load file with same hash
                    loadJSON(method, filename, result.hash).then(result2 => {
                        expect(result2.changed).to.be.equal(false);
                        expect(result2.hash).to.be.equal(result.hash);

                        done();
                    }).catch(err => {
                        done(err);
                    });
                }).catch(err => {
                    done(err);
                });
            });
        });
    });
})();