export default function reducer(state = initialNavState, action) {
switch (action.type) {
case NAV_PUSH:
if (state.routes[state.index].key === (action.state && action.state.key)) {
return state;
}
return NavigationStateUtils.push(state, action.data);
case NAV_POP:
if (state.index === 0 || state.routes.length === 1) {
return state;
}
return NavigationStateUtils.pop(state);
case NAV_JUMP_TO_KEY:
return NavigationStateUtils.jumpTo(state, action.key);
case NAV_JUMP_TO_INDEX:
return NavigationStateUtils.jumpToIndex(state, action.index);
case NAV_RESET:
return NavigationStateUtils.reset(state, action.routes, action.index);
default:
return state;
}
}
it('Resets routes', () => {
const state = {index: 0, routes: [{key: 'a'}, {key: 'b'}]};
const newState = {index: 1, routes: [{key: 'x'}, {key: 'y'}]};
expect(
NavigationStateUtils.reset(
state,
[{key: 'x'}, {key: 'y'}],
)
).toEqual(newState);
expect(() => {
NavigationStateUtils.reset(state, []);
}).toThrow();
});
expect(() => {
NavigationStateUtils.reset(state, [{key: 'x'}, {key: 'y'}], 100);
}).toThrow();
expect(() => {
NavigationStateUtils.reset(state, []);
}).toThrow();