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import reducer from '../../../../app/javascript/journey_patterns/reducers/pagination'
const diff = 1
let state = {
page : 2,
totalCount : 50,
stateChanged: false,
perPage: 20
}
let pagination = Object.assign({}, state)
const dispatch = function(){}
describe('pagination reducer, given parameters allowing page change', () => {
it('should return the initial state', () => {
expect(
reducer(undefined, {})
).toEqual({})
})
it('should handle GO_TO_NEXT_PAGE and change state', () => {
expect(
reducer(state, {
type: 'GO_TO_NEXT_PAGE',
dispatch,
pagination,
nextPage : true
})
).toEqual(Object.assign({}, state, {page : state.page + 1, stateChanged: false}))
})
it('should return GO_TO_PREVIOUS_PAGE and change state', () => {
expect(
reducer(state, {
type: 'GO_TO_PREVIOUS_PAGE',
dispatch,
pagination,
nextPage : false
})
).toEqual(Object.assign({}, state, {page : state.page - 1, stateChanged: false}))
})
})
describe('pagination reducer, given parameters not allowing to go to previous page', () => {
beforeEach(()=>{
state.page = 1
pagination.page = 1
})
it('should return GO_TO_PREVIOUS_PAGE and not change state', () => {
expect(
reducer(state, {
type: 'GO_TO_PREVIOUS_PAGE',
dispatch,
pagination,
nextPage : false
})
).toEqual(state)
})
})
describe('pagination reducer, given parameters not allowing to go to next page', () => {
beforeEach(()=>{
state.page = 3
pagination.page = 3
})
it('should return GO_TO_NEXT_PAGE and not change state', () => {
expect(
reducer(state, {
type: 'GO_TO_NEXT_PAGE',
dispatch,
pagination,
nextPage : true
})
).toEqual(state)
})
})
describe('pagination reducer, given parameters changing totalCount', () => {
it('should return UPDATE_TOTAL_COUNT and update totalCount', () => {
expect(
reducer(state, {
type: 'UPDATE_TOTAL_COUNT',
diff
})
).toEqual(Object.assign({}, state, {totalCount: state.totalCount - diff}))
})
})
|
