addNavigationHelpers-test.js
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/* @flow */
import NavigationActions from '../NavigationActions';
import addNavigationHelpers from '../addNavigationHelpers';
describe('addNavigationHelpers', () => {
it('handles Back action', () => {
const mockedDispatch = jest
.fn(() => false)
.mockImplementationOnce(() => true);
expect(
addNavigationHelpers({
state: { key: 'A', routeName: 'Home' },
dispatch: mockedDispatch,
}).goBack('A')
).toEqual(true);
expect(mockedDispatch).toBeCalledWith({
type: NavigationActions.BACK,
key: 'A',
});
expect(mockedDispatch.mock.calls.length).toBe(1);
});
it('handles Back action when the key is not defined', () => {
const mockedDispatch = jest
.fn(() => false)
.mockImplementationOnce(() => true);
expect(
addNavigationHelpers({
state: { routeName: 'Home' },
dispatch: mockedDispatch,
}).goBack()
).toEqual(true);
expect(mockedDispatch).toBeCalledWith({ type: NavigationActions.BACK });
expect(mockedDispatch.mock.calls.length).toBe(1);
});
it('handles Navigate action', () => {
const mockedDispatch = jest
.fn(() => false)
.mockImplementationOnce(() => true);
expect(
addNavigationHelpers({
state: { routeName: 'Home' },
dispatch: mockedDispatch,
}).navigate('Profile', { name: 'Matt' })
).toEqual(true);
expect(mockedDispatch).toBeCalledWith({
type: NavigationActions.NAVIGATE,
params: { name: 'Matt' },
routeName: 'Profile',
});
expect(mockedDispatch.mock.calls.length).toBe(1);
});
it('handles SetParams action', () => {
const mockedDispatch = jest
.fn(() => false)
.mockImplementationOnce(() => true);
expect(
addNavigationHelpers({
state: { key: 'B', routeName: 'Settings' },
dispatch: mockedDispatch,
}).setParams({ notificationsEnabled: 'yes' })
).toEqual(true);
expect(mockedDispatch).toBeCalledWith({
type: NavigationActions.SET_PARAMS,
key: 'B',
params: { notificationsEnabled: 'yes' },
});
expect(mockedDispatch.mock.calls.length).toBe(1);
});
});