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add unit test for BackupService
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Julian Descottes
parent
c6e106fe2d
commit
372ad1f513
279
test/js/service/BackupServiceTest.js
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279
test/js/service/BackupServiceTest.js
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describe('BackupService test', function () {
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// Some helper const.
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var ONE_SECOND = 1000;
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var ONE_MINUTE = 60 * ONE_SECOND;
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var mockBackupDatabase;
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var mockPiskel;
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var mockPiskelController;
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// Globals used in stubs
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var stubValues = {
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snapshotDate: null,
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serializedPiskel: null
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};
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// Main test object.
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var backupService;
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beforeEach(function () {
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// Create mocks.
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mockBackupDatabase = {
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// Test property
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_sessions: {},
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init: function () {},
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getSnapshotsBySessionId: function (sessionId) {
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// Default implementation that looks up in _sessions or returns an
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// empty array.
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return Promise.resolve(this._sessions[sessionId] || []);
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},
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updateSnapshot: function () { return Promise.resolve(); },
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createSnapshot: function () { return Promise.resolve(); },
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deleteSnapshot: function () { return Promise.resolve(); },
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getSessions: function () { return Promise.resolve([]); },
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deleteSnapshotsForSession: function () { return Promise.resolve(); },
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findLastSnapshot: function () { return Promise.resolve(null); }
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};
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mockPiskel = {
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_descriptor: {},
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_hash: null,
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getDescriptor: function () { return this._descriptor; },
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getHash: function () { return this._hash; },
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};
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mockPiskelController = {
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getPiskel: function () { return mockPiskel; },
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setPiskel: function () {}
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};
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spyOn(pskl.utils.serialization.Serializer, 'serialize').and.callFake(function () {
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return stubValues.serializedPiskel;
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});
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// Create test backup service with mocks.
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backupService = new pskl.service.BackupService(
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mockPiskelController,
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mockBackupDatabase
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);
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// Override the currentDate_ internal helper in order to set
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// custom snapshot dates.
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backupService.currentDate_ = function () {
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return snapshotDate;
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}
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});
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var createSnapshotObject = function (session_id, name, description, date, serialized) {
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return {
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session_id: session_id,
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name: name,
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description: description,
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date: date,
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serialized: serialized
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};
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};
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var preparePiskelMocks = function (session_id, name, description, hash, serialized) {
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mockPiskel.sessionId = session_id;
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mockPiskel._descriptor.name = name;
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mockPiskel._descriptor.description = description;
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mockPiskel._hash = hash;
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stubValues.serializedPiskel = serialized;
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};
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it('calls create to backup', function (done) {
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preparePiskelMocks(1, 'piskel_name', 'piskel_desc', 'piskel_hash', 'serialized');
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// Set snashot date.
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snapshotDate = 5;
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// No snapshots currently saved.
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spyOn(mockBackupDatabase, 'createSnapshot').and.callThrough();
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backupService.backup().then(function () {
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expect(mockBackupDatabase.createSnapshot).toHaveBeenCalled();
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var snapshot = mockBackupDatabase.createSnapshot.calls.mostRecent().args[0]
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expect(snapshot.session_id).toEqual(1);
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expect(snapshot.name).toEqual('piskel_name');
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expect(snapshot.description).toEqual('piskel_desc');
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expect(snapshot.date).toEqual(5);
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expect(snapshot.serialized).toEqual('serialized');
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done();
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});
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});
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it('does not call update to backup if the hash did not change', function (done) {
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var session = 1;
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var date1 = 0;
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var date2 = ONE_MINUTE;
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var snapshot1 = createSnapshotObject(1, 'piskel_name1', 'piskel_desc1', date1, 'serialized1');
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preparePiskelMocks(session, 'piskel_name1', 'piskel_desc1', 'hash', 'serialized1');
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snapshotDate = date1;
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// Prepare spies.
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spyOn(mockBackupDatabase, 'updateSnapshot').and.callThrough();
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spyOn(mockBackupDatabase, 'createSnapshot').and.callThrough();
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backupService.backup().then(function () {
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// The snapshot should have been created using "createSnapshot".
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expect(mockBackupDatabase.createSnapshot).toHaveBeenCalled();
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expect(mockBackupDatabase.updateSnapshot.calls.any()).toBe(false);
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// Prepare snapshot1 to be returned in the list of already existing sessions.
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mockBackupDatabase._sessions[session] = [snapshot1];
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preparePiskelMocks(session, 'piskel_name2', 'piskel_desc2', 'hash', 'serialized2');
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snapshotDate = date2;
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backupService.backup().then(function () {
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// Check that createSnapshot was not called again and updateSnapshot either.
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expect(mockBackupDatabase.createSnapshot.calls.count()).toEqual(1);
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expect(mockBackupDatabase.updateSnapshot.calls.count()).toEqual(0);
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done();
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});
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});
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});
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it('calls update to backup if there is an existing & recent snapshot', function (done) {
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var session = 1;
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var date1 = 0;
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var date2 = ONE_MINUTE;
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var snapshot1 = createSnapshotObject(1, 'piskel_name1', 'piskel_desc1', date1, 'serialized1');
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preparePiskelMocks(session, 'piskel_name1', 'piskel_desc1', 'piskel_hash1', 'serialized1');
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snapshotDate = date1;
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// Prepare spies.
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spyOn(mockBackupDatabase, 'updateSnapshot').and.callThrough();
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spyOn(mockBackupDatabase, 'createSnapshot').and.callThrough();
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backupService.backup().then(function () {
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// The snapshot should have been created using "createSnapshot".
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expect(mockBackupDatabase.createSnapshot).toHaveBeenCalled();
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// Prepare snapshot1 to be returned in the list of already existing sessions.
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mockBackupDatabase._sessions[session] = [snapshot1];
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preparePiskelMocks(session, 'piskel_name2', 'piskel_desc2', 'piskel_hash2', 'serialized2');
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snapshotDate = date2;
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backupService.backup().then(function () {
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// Check that createSnapshot was not called again.
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expect(mockBackupDatabase.createSnapshot.calls.count()).toEqual(1);
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// Check that updateSnapshot was called with the expected arguments.
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expect(mockBackupDatabase.updateSnapshot).toHaveBeenCalled();
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var snapshot = mockBackupDatabase.updateSnapshot.calls.mostRecent().args[0]
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expect(snapshot.session_id).toEqual(session);
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expect(snapshot.name).toEqual('piskel_name2');
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expect(snapshot.description).toEqual('piskel_desc2');
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expect(snapshot.date).toEqual(date2);
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expect(snapshot.serialized).toEqual('serialized2');
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done();
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});
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});
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});
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it('creates a new snapshot if the time difference is big enough', function (done) {
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var session = 1;
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var date1 = 0;
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var date2 = 6 * ONE_MINUTE;
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var snapshot1 = createSnapshotObject(1, 'piskel_name1', 'piskel_desc1', date1, 'serialized1');
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preparePiskelMocks(session, 'piskel_name1', 'piskel_desc1', 'piskel_hash1', 'serialized1');
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snapshotDate = date1;
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// Prepare spies.
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spyOn(mockBackupDatabase, 'updateSnapshot').and.callThrough();
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spyOn(mockBackupDatabase, 'createSnapshot').and.callThrough();
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backupService.backup().then(function () {
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// The snapshot should have been created using "createSnapshot".
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expect(mockBackupDatabase.createSnapshot).toHaveBeenCalled();
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// Prepare snapshot1 to be returned in the list of already existing sessions.
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mockBackupDatabase._sessions[session] = [snapshot1];
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preparePiskelMocks(session, 'piskel_name2', 'piskel_desc2', 'piskel_hash2', 'serialized2');
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snapshotDate = date2;
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backupService.backup().then(function () {
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// Check that updateSnapshot was not called.
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expect(mockBackupDatabase.updateSnapshot.calls.count()).toEqual(0);
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// Check that updateSnapshot was called with the expected arguments.
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expect(mockBackupDatabase.createSnapshot).toHaveBeenCalled();
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var snapshot = mockBackupDatabase.createSnapshot.calls.mostRecent().args[0]
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expect(snapshot.session_id).toEqual(session);
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expect(snapshot.name).toEqual('piskel_name2');
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expect(snapshot.description).toEqual('piskel_desc2');
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expect(snapshot.date).toEqual(date2);
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expect(snapshot.serialized).toEqual('serialized2');
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done();
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});
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});
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});
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it('deletes old snapshots if there are too many of them', function (done) {
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var session = 1;
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var maxPerSession = 12;
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preparePiskelMocks(session, 'piskel_name', 'piskel_desc', 'piskel_hash', 'serialized12');
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snapshotDate = 12 * 6 * ONE_MINUTE;
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// Prepare spies.
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spyOn(mockBackupDatabase, 'deleteSnapshot').and.callThrough();
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spyOn(mockBackupDatabase, 'createSnapshot').and.callThrough();
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// Prepare array of already saved snapshots.
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mockBackupDatabase._sessions[session] = [];
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for (var i = maxPerSession - 1 ; i >= 0 ; i--) {
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mockBackupDatabase._sessions[session].push(
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createSnapshotObject(session, 'piskel_name', 'piskel_desc', i * 6 * ONE_MINUTE, 'serialized' + i)
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);
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}
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backupService.backup().then(function () {
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expect(mockBackupDatabase.createSnapshot).toHaveBeenCalled();
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expect(mockBackupDatabase.deleteSnapshot).toHaveBeenCalled();
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// It will simply attempt to delete the last item from the array of saved sessions
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var snapshot = mockBackupDatabase.deleteSnapshot.calls.mostRecent().args[0];
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expect(snapshot.session_id).toEqual(session);
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expect(snapshot.name).toEqual('piskel_name');
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expect(snapshot.description).toEqual('piskel_desc');
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expect(snapshot.date).toEqual(0);
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expect(snapshot.serialized).toEqual('serialized0');
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done();
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});
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});
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it('deletes a session if there are too many of them', function (done) {
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var session = 'session10';
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var maxSessions = 10;
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preparePiskelMocks(session, 'piskel_name', 'piskel_desc', 'piskel_hash', 'serialized12');
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snapshotDate = 10 * ONE_MINUTE;
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// Prepare array of sessions.
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var sessions = [];
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for (var i = 0 ; i < maxSessions + 1 ; i++) {
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sessions.push({
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id: 'session' + i,
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startDate: i * ONE_MINUTE
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});
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}
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// Prepare spies.
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spyOn(mockBackupDatabase, 'getSessions').and.returnValue(Promise.resolve(sessions));
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spyOn(mockBackupDatabase, 'createSnapshot').and.callThrough();
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spyOn(mockBackupDatabase, 'deleteSnapshotsForSession').and.callThrough();
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backupService.backup().then(function () {
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expect(mockBackupDatabase.createSnapshot).toHaveBeenCalled();
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expect(mockBackupDatabase.deleteSnapshotsForSession).toHaveBeenCalled();
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// It will simply attempt to delete the last item from the array of saved sessions
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var sessionId = mockBackupDatabase.deleteSnapshotsForSession.calls.mostRecent().args[0];
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expect(sessionId).toEqual('session0');
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done();
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});
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});
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});
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