updux/src/selectors.test.ts

136 lines
3.5 KiB
TypeScript

import { test } from 'tap';
import Updux, { dux, coduxes, DuxState } from '.';
import { expectType } from 'tsd';
test('basic selectors', async t => {
const updux = dux({
subduxes: {
bogeys: dux({
selectors: {
bogey: (bogeys: any) => (id: string) => bogeys[id],
},
}),
},
selectors: {
bogeys: ({ bogeys }) => bogeys,
},
});
const state = {
bogeys: {
foo: 1,
bar: 2,
},
};
t.same(updux.selectors.bogeys(state), { foo: 1, bar: 2 });
t.equal(updux.selectors.bogey(state)('foo'), 1);
});
test('available in the middleware', async t => {
const updux = dux<any, any>({
subduxes: {
bogeys: dux({
initial: { enkidu: 'foo' },
selectors: {
bogey: (bogeys: any) => (id: string) => bogeys[id],
},
}),
},
effects: {
doIt: ({ selectors: { bogey }, getState }) => next => action => {
next({
...action,
payload: bogey(getState())('enkidu'),
});
},
},
mutations: {
doIt: payload => state => ({ ...state, payload }),
},
});
const store = updux.createStore();
store.dispatch(updux.actions.doIt());
t.match(store.getState(), { payload: 'foo' });
});
test('selector typescript', async t => {
const bar = dux({
initial: { baz: 1 } as { baz: number },
selectors: {
getBaz: (state: { baz: number }) => state.baz,
getStringBaz: state => `${state.baz}`,
getMultBaz: state => (mult: number) => state.baz * mult,
},
});
expectType<{
getBaz: Function;
getStringBaz: Function;
}>(bar.selectors);
t.same(bar.selectors.getBaz(bar.initial), 1);
t.same(bar.selectors.getMultBaz({ baz: 3 })(2), 6);
test('subduxes', async t => {
const foo = dux({
subduxes: { bar },
...coduxes( dux({}) ),
selectors: {
getRoot: () => 'root'
}
});
expectType<{
({ bar: { baz: number } }): number;
}>(foo.selectors.getBaz);
t.same(foo.selectors.getBaz(foo.initial), 1);
t.same(foo.selectors.getMultBaz({ bar: { baz: 3 } })(2), 6);
t.ok( foo.selectors.getRoot );
});
test('no root selector', async t => {
const foo = dux({
subduxes: {
quux: dux({}),
bar: dux({
selectors: {
getBaz: () => 'baz'
}
})
}
});
t.ok(foo.selectors.getBaz);
});
});
test('selector in mw', async () => {
const myDux = new Updux(
{
initial: { stuff: 12 },
subduxes: {
bar: dux({
initial: 'potato',
selectors: { getBar: () => 'meh' }
})
},
selectors: {
// TODO here we should auto-populate the state
getStuff: (state: {stuff: number}) => state.stuff
}
}
);
myDux.addEffect( '*', ({
selectors, getState
}) => () => () => {
expectType<DuxState<typeof myDux>>( getState() );
expectType<(...args:any[]) => number>(selectors.getStuff);
});
});