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modeldb.spec.ts
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modeldb.spec.ts
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// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import expect = require('expect.js');
import {
JSONExt
} from '@phosphor/coreutils';
import {
ModelDB, ObservableString, ObservableValue,
ObservableUndoableVector, ObservableJSON
} from '@jupyterlab/coreutils';
describe('@jupyterlab/coreutils', () => {
describe('ObservableValue', () => {
describe('#constructor', () => {
it('should accept no arguments', () => {
let value = new ObservableValue();
expect(value instanceof ObservableValue).to.be(true);
expect(value.get()).to.be(undefined);
});
it('should accept an initial JSON value', () => {
let value = new ObservableValue('value');
expect(value instanceof ObservableValue).to.be(true);
let value2 = new ObservableValue({ one: 'one', two: 2 });
expect(value2 instanceof ObservableValue).to.be(true);
});
});
describe('#type', () => {
it('should return `Value`', () => {
let value = new ObservableValue();
expect(value.type).to.be('Value');
});
});
describe('#isDisposed', () => {
it('should test whether the value is disposed', () => {
let value = new ObservableValue();
expect(value.isDisposed).to.be(false);
value.dispose();
expect(value.isDisposed).to.be(true);
});
});
describe('#changed', () => {
it('should be emitted when the map changes state', () => {
let called = false;
let value = new ObservableValue();
value.changed.connect(() => { called = true; });
value.set('set');
expect(called).to.be(true);
});
it('should have value changed args', () => {
let called = false;
let value = new ObservableValue();
value.changed.connect((sender, args) => {
expect(sender).to.be(value);
expect(args.newValue).to.be('set');
expect(args.oldValue).to.be(undefined);
called = true;
});
value.set('set');
expect(called).to.be(true);
});
});
describe('#get', () => {
it('should get the value of the object', () => {
let value = new ObservableValue('value');
expect(value.get()).to.be('value');
let value2 = new ObservableValue({ one: 'one', two: 2 });
expect(JSONExt.deepEqual(value2.get(), { one: 'one', two: 2 })).to.be(true);
});
});
describe('#set', () => {
it('should set the value of the object', () => {
let value = new ObservableValue();
value.set('value');
expect(value.get()).to.be('value');
});
});
});
describe('ModelDB', () => {
describe('#constructor()', () => {
it('should accept no arguments', () => {
let db = new ModelDB();
expect(db instanceof ModelDB).to.be(true);
});
it('should accept a basePath', () => {
let db = new ModelDB({ basePath: 'base' });
expect(db instanceof ModelDB).to.be(true);
});
it('should accept a baseDB', () => {
let base = new ModelDB();
let db = new ModelDB({ baseDB: base });
expect(db instanceof ModelDB).to.be(true);
});
});
describe('#isDisposed', () => {
it('should test whether it is disposed', () => {
let db = new ModelDB();
expect(db.isDisposed).to.be(false);
db.dispose();
expect(db.isDisposed).to.be(true);
});
});
describe('#basePath', () => {
it('should return an empty string for a model without a baseDB', () => {
let db = new ModelDB();
expect(db.basePath).to.be('');
});
it('should return the base path', () => {
let db = new ModelDB({ basePath: 'base' });
expect(db.basePath).to.be('base');
});
});
describe('#isPrepopulated', () => {
it('should return false for an in-memory database', () => {
let db = new ModelDB();
expect(db.isPrepopulated).to.be(false);
});
});
describe('#isCollaborative', () => {
it('should return false for an in-memory database', () => {
let db = new ModelDB();
expect(db.isCollaborative).to.be(false);
});
});
describe('#connected', () => {
it('should resolve immediately for an in-memory database', (done) => {
let db = new ModelDB();
db.connected.then(done);
});
});
describe('#get', () => {
it('should get a value that exists at a path', () => {
let db = new ModelDB();
let value = db.createValue('value');
let value2 = db.get('value');
expect(value2).to.be(value);
});
it('should return undefined for a value that does not exist', () => {
let db = new ModelDB();
expect(db.get('value')).to.be(undefined);
});
});
describe('#has', () => {
it('should return true if a value exists at a path', () => {
let db = new ModelDB();
let value = db.createValue('value');
expect(db.has('value')).to.be(true);
});
it('should return false for a value that does not exist', () => {
let db = new ModelDB();
expect(db.has('value')).to.be(false);
});
});
describe('#createString', () => {
it('should create an ObservableString`', () => {
let db = new ModelDB();
let str = db.createString('str');
expect(str instanceof ObservableString).to.be(true);
});
it('should be able to retrieve that string using `get`', () => {
let db = new ModelDB();
let str = db.createString('str');
expect(db.get('str')).to.be(str);
});
});
describe('#createVector', () => {
it('should create an ObservableUndoableVector`', () => {
let db = new ModelDB();
let str = db.createVector('vec');
expect(str instanceof ObservableUndoableVector).to.be(true);
});
it('should be able to retrieve that vector using `get`', () => {
let db = new ModelDB();
let vec = db.createVector('vec');
expect(db.get('vec')).to.be(vec);
});
});
describe('#createMap', () => {
it('should create an ObservableMap`', () => {
let db = new ModelDB();
let map = db.createMap('map');
expect(map instanceof ObservableJSON).to.be(true);
});
it('should be able to retrieve that map using `get`', () => {
let db = new ModelDB();
let map = db.createMap('map');
expect(db.get('map')).to.be(map);
});
});
describe('#createValue', () => {
it('should create an ObservableValue`', () => {
let db = new ModelDB();
let value = db.createValue('value');
expect(value instanceof ObservableValue).to.be(true);
});
it('should be able to retrieve that value using `get`', () => {
let db = new ModelDB();
let value = db.createString('value');
expect(db.get('value')).to.be(value);
});
});
describe('#setValue', () => {
it('should set a value at a path', () => {
let db = new ModelDB();
let value = db.createValue('value');
db.setValue('value', 'set');
expect(value.get()).to.be('set');
});
});
describe('#getValue', () => {
it('should get a value at a path', () => {
let db = new ModelDB();
let value = db.createValue('value');
value.set('set');
expect(db.getValue('value')).to.be('set');
});
});
describe('#view', () => {
it('should should return a ModelDB', () => {
let db = new ModelDB();
let view = db.view('');
expect(view instanceof ModelDB).to.be(true);
expect(view === db).to.be(false);
});
it('should set the baseDB path on the view', () => {
let db = new ModelDB();
let view = db.view('base');
expect(view.basePath).to.be('base');
});
it('should return a view onto the base ModelDB', () => {
let db = new ModelDB();
let view = db.view('base');
db.createString('base.str1');
expect(db.get('base.str1')).to.be(view.get('str1'));
view.createString('str2');
expect(db.get('base.str2')).to.be(view.get('str2'));
});
it('should be stackable', () => {
let db = new ModelDB();
let view = db.view('one');
let viewView = view.view('two');
expect(view.basePath).to.be('one');
expect(viewView.basePath).to.be('two');
viewView.createString('str');
expect(viewView.get('str')).to.be(view.get('two.str'));
expect(viewView.get('str')).to.be(db.get('one.two.str'));
});
});
describe('#dispose', () => {
it('should dispose of the resources used by the model', () => {
let db = new ModelDB();
let str = db.createString('str');
let view = db.view('base');
let str2 = view.createString('str');
expect(db.isDisposed).to.be(false);
expect(str.isDisposed).to.be(false);
expect(view.isDisposed).to.be(false);
expect(str2.isDisposed).to.be(false);
db.dispose();
expect(db.isDisposed).to.be(true);
expect(str.isDisposed).to.be(true);
expect(view.isDisposed).to.be(true);
expect(str2.isDisposed).to.be(true);
});
it('should not dispose of resources in base databases', () => {
let db = new ModelDB();
let view = db.view('base');
let str = db.createString('str');
let str2 = view.createString('str');
expect(db.isDisposed).to.be(false);
expect(str.isDisposed).to.be(false);
expect(view.isDisposed).to.be(false);
expect(str2.isDisposed).to.be(false);
view.dispose();
expect(view.isDisposed).to.be(true);
expect(str2.isDisposed).to.be(true);
expect(db.isDisposed).to.be(false);
expect(str.isDisposed).to.be(false);
});
it('should be safe to call more than once', () => {
let db = new ModelDB();
expect(db.isDisposed).to.be(false);
db.dispose();
expect(db.isDisposed).to.be(true);
});
});
});
});