createConfigGetter-test.js
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/* @flow */
import { Component } from 'react';
import createConfigGetter from '../createConfigGetter';
import addNavigationHelpers from '../../addNavigationHelpers';
import type {
NavigationScreenOptionsGetter,
NavigationStackScreenOptions,
} from '../../TypeDefinition';
test('should get config for screen', () => {
/* eslint-disable react/no-multi-comp */
class HomeScreen extends Component<void> {
static navigationOptions = ({ navigation }: *) => ({
title: `Welcome ${navigation.state.params
? navigation.state.params.user
: 'anonymous'}`,
gesturesEnabled: true,
});
render() {
return null;
}
}
class SettingsScreen extends Component<void> {
static navigationOptions = {
title: 'Settings!!!',
gesturesEnabled: false,
};
render() {
return null;
}
}
class NotificationScreen extends Component<void> {
static navigationOptions = ({ navigation }: *) => ({
title: '42',
gesturesEnabled: navigation.state.params
? !navigation.state.params.fullscreen
: true,
});
render() {
return null;
}
}
const getScreenOptions: NavigationScreenOptionsGetter<
NavigationStackScreenOptions
> = createConfigGetter({
Home: { screen: HomeScreen },
Settings: { screen: SettingsScreen },
Notifications: {
screen: NotificationScreen,
navigationOptions: {
title: '10 new notifications',
},
},
});
const routes = [
{ key: 'A', routeName: 'Home' },
{ key: 'B', routeName: 'Home', params: { user: 'jane' } },
{ key: 'C', routeName: 'Settings' },
{ key: 'D', routeName: 'Notifications' },
{ key: 'E', routeName: 'Notifications', params: { fullscreen: true } },
];
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[0], dispatch: () => false }),
{}
).title
).toEqual('Welcome anonymous');
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[1], dispatch: () => false }),
{}
).title
).toEqual('Welcome jane');
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[0], dispatch: () => false }),
{}
).gesturesEnabled
).toEqual(true);
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[2], dispatch: () => false }),
{}
).title
).toEqual('Settings!!!');
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[2], dispatch: () => false }),
{}
).gesturesEnabled
).toEqual(false);
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[3], dispatch: () => false }),
{}
).title
).toEqual('10 new notifications');
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[3], dispatch: () => false }),
{}
).gesturesEnabled
).toEqual(true);
expect(
getScreenOptions(
addNavigationHelpers({ state: routes[4], dispatch: () => false }),
{}
).gesturesEnabled
).toEqual(false);
});
test('should throw if the route does not exist', () => {
/* eslint-disable react/no-multi-comp */
const HomeScreen = () => null;
HomeScreen.navigationOptions = {
title: 'Home screen',
gesturesEnabled: true,
};
const getScreenOptions = createConfigGetter({
Home: { screen: HomeScreen },
});
const routes = [{ key: 'B', routeName: 'Settings' }];
expect(() =>
getScreenOptions(
addNavigationHelpers({ state: routes[0], dispatch: () => false }),
{}
)
).toThrowError(
"There is no route defined for key Settings.\nMust be one of: 'Home'"
);
});
test('should throw if the screen is not defined under the route config', () => {
/* eslint-disable react/no-multi-comp */
const getScreenOptions = createConfigGetter({
Home: {},
});
const routes = [{ key: 'B', routeName: 'Home' }];
expect(() =>
getScreenOptions(
addNavigationHelpers({ state: routes[0], dispatch: () => false })
)
).toThrowError('Route Home must define a screen or a getScreen.');
});