Passed
Pull Request — master (#25)
by Alejandro
03:34
created

ServersService.test.js ➔ ... ➔ ???   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4
Code Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
eloc 9
nc 1
dl 0
loc 4
rs 9.95
c 0
b 0
f 0
nop 1
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import sinon from 'sinon';
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import { last } from 'ramda';
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import { ServersService } from '../../../src/servers/services/ServersService';
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describe('ServersService', () => {
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  const servers = {
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    abc123: { id: 'abc123' },
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    def456: { id: 'def456' },
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  };
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  const createStorageMock = (returnValue) => ({
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    set: sinon.fake(),
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    get: sinon.fake.returns(returnValue),
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  });
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  describe('listServers', () => {
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    it('returns an empty object when servers are not found in storage', () => {
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      const storageMock = createStorageMock();
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      const service = new ServersService(storageMock);
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      const result = service.listServers();
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      expect(result).toEqual({});
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      expect(storageMock.get.callCount).toEqual(1);
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      expect(storageMock.set.callCount).toEqual(0);
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    });
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    it('returns value from storage when found', () => {
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      const storageMock = createStorageMock(servers);
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      const service = new ServersService(storageMock);
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      const result = service.listServers();
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      expect(result).toEqual(servers);
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      expect(storageMock.get.callCount).toEqual(1);
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      expect(storageMock.set.callCount).toEqual(0);
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    });
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  });
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  describe('findServerById', () => {
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    it('returns undefined when requested server is not found', () => {
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      const storageMock = createStorageMock(servers);
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      const service = new ServersService(storageMock);
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      const result = service.findServerById('ghi789');
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      expect(result).toBeUndefined();
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      expect(storageMock.get.callCount).toEqual(1);
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      expect(storageMock.set.callCount).toEqual(0);
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    });
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    it('returns server from list when found', () => {
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      const storageMock = createStorageMock(servers);
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      const service = new ServersService(storageMock);
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      const result = service.findServerById('abc123');
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      expect(result).toEqual({ id: 'abc123' });
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      expect(storageMock.get.callCount).toEqual(1);
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      expect(storageMock.set.callCount).toEqual(0);
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    });
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  });
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  describe('createServer', () => {
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    it('adds one server to the list', () => {
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      const storageMock = createStorageMock(servers);
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      const service = new ServersService(storageMock);
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      service.createServer({ id: 'ghi789' });
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      expect(storageMock.get.callCount).toEqual(1);
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      expect(storageMock.set.callCount).toEqual(1);
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      expect(last(storageMock.set.lastCall.args)).toEqual({
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        abc123: { id: 'abc123' },
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        def456: { id: 'def456' },
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        ghi789: { id: 'ghi789' },
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      });
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    });
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  });
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  describe('createServers', () => {
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    it('adds multiple servers to the list', () => {
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      const storageMock = createStorageMock(servers);
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      const service = new ServersService(storageMock);
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      service.createServers([{ id: 'ghi789' }, { id: 'jkl123' }]);
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      expect(storageMock.get.callCount).toEqual(1);
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      expect(storageMock.set.callCount).toEqual(1);
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      expect(last(storageMock.set.lastCall.args)).toEqual({
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        abc123: { id: 'abc123' },
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        def456: { id: 'def456' },
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        ghi789: { id: 'ghi789' },
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        jkl123: { id: 'jkl123' },
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      });
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    });
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  });
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  describe('deleteServer', () => {
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    it('removes one server from the list', () => {
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      const storageMock = createStorageMock(servers);
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      const service = new ServersService(storageMock);
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      service.deleteServer({ id: 'abc123' });
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      expect(storageMock.get.callCount).toEqual(1);
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      expect(storageMock.set.callCount).toEqual(1);
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      expect(last(storageMock.set.lastCall.args)).toEqual({
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        def456: { id: 'def456' },
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      });
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    });
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  });
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});
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