it('should be able to get the initial state', () => {
const broadcast = createBroadcast();
const initialState = {};
broadcast.setState(initialState);
assert.strictEqual(themeListener.initial({ [CHANNEL]: broadcast }), initialState);
});
it('should be able to subscribe to the event stream', done => {
const broadcast = createBroadcast();
const initialState = {};
const secondState = {};
broadcast.setState(initialState);
themeListener.subscribe(
{
[CHANNEL]: broadcast,
},
state => {
assert.strictEqual(state, secondState);
done();
},
);
broadcast.setState(secondState);
});
test(`ThemeProvider unsubscribes on unmounting`, t => {
const ThemeProvider = createThemeProvider();
const theme = { themed: true };
const broadcast = createBroadcast(theme);
const wrapper = mount(
<ThemeProvider theme={theme} />,
mountOptions(broadcast),
);
const { subscriptionId } = wrapper.instance();
t.true(wrapper.instance().subscriptionId !== undefined, 'brcast subscriptionId is undefined');
t.true(typeof wrapper.instance().subscriptionId === 'number', 'brcast subscriptionId expected to be number');
const subscription = getInterceptor(subscriptionId);
const brcastInst = wrapper.context(channel);
brcastInst.unsubscribe = (id) => subscription(id);
wrapper.setContext({[channel]: brcastInst});
wrapper.unmount();
t.true(subscription() === subscriptionId, `ThemeProvider should unsubscribe on unmounting`);
});
before(() => {
shallow = createShallow();
mount = createMount();
broadcast = createBroadcast();
context = { [CHANNEL]: broadcast };
});