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metamask-extension/app/scripts/lib/ComposableObservableStore.test.js
Mark Stacey 89ef78674d
Replace uses of hasOwnProperty.call with simpler alternatives (#11009)
Three uses of `hasOwnProperty.call` have been replaced with simpler
alternatives. I did this because I found this convention confusing.

The `ComposableObservableStore` changes required adding a check for
whether the `config` is defined, because the old syntax would allow
iterating over `undefined` as if it was an empty object. Functionally
it should be identical. A new test was added to highlight this
functionality.
2021-05-11 14:09:17 -02:30

41 lines
1.5 KiB
JavaScript

import { strict as assert } from 'assert';
import { ObservableStore } from '@metamask/obs-store';
import ComposableObservableStore from './ComposableObservableStore';
describe('ComposableObservableStore', function () {
it('should register initial state', function () {
const store = new ComposableObservableStore('state');
assert.strictEqual(store.getState(), 'state');
});
it('should register initial structure', function () {
const testStore = new ObservableStore();
const store = new ComposableObservableStore(null, { TestStore: testStore });
testStore.putState('state');
assert.deepEqual(store.getState(), { TestStore: 'state' });
});
it('should update structure', function () {
const testStore = new ObservableStore();
const store = new ComposableObservableStore();
store.updateStructure({ TestStore: testStore });
testStore.putState('state');
assert.deepEqual(store.getState(), { TestStore: 'state' });
});
it('should return flattened state', function () {
const fooStore = new ObservableStore({ foo: 'foo' });
const barStore = new ObservableStore({ bar: 'bar' });
const store = new ComposableObservableStore(null, {
FooStore: fooStore,
BarStore: barStore,
});
assert.deepEqual(store.getFlatState(), { foo: 'foo', bar: 'bar' });
});
it('should return empty flattened state when not configured', function () {
const store = new ComposableObservableStore();
assert.deepEqual(store.getFlatState(), {});
});
});