111 lines
2.6 KiB
JavaScript
111 lines
2.6 KiB
JavaScript
/**
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* Helper for testing action with expected mutations inspired in
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* https://vuex.vuejs.org/en/testing.html
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*
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* @param {(Function|Object)} action to be tested, or object of named parameters
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* @param {Object} payload will be provided to the action
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* @param {Object} state will be provided to the action
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* @param {Array} [expectedMutations=[]] mutations expected to be committed
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* @param {Array} [expectedActions=[]] actions expected to be dispatched
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* @return {Promise}
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*
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* @example
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* testAction(
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* actions.actionName, // action
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* { }, // mocked payload
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* state, //state
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* // expected mutations
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* [
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* { type: types.MUTATION}
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* { type: types.MUTATION_1, payload: expect.any(Number)}
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* ],
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* // expected actions
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* [
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* { type: 'actionName', payload: {param: 'foobar'}},
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* { type: 'actionName1'}
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* ]
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* );
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*
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* @example
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* await testAction({
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* action: actions.actionName,
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* payload: { deleteListId: 1 },
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* state: { lists: [1, 2, 3] },
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* expectedMutations: [ { type: types.MUTATION} ],
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* expectedActions: [],
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* })
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*/
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export default (
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actionArg,
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payloadArg,
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stateArg,
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expectedMutationsArg = [],
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expectedActionsArg = [],
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) => {
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let action = actionArg;
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let payload = payloadArg;
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let state = stateArg;
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let expectedMutations = expectedMutationsArg;
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let expectedActions = expectedActionsArg;
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if (typeof actionArg !== 'function') {
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({ action, payload, state, expectedMutations = [], expectedActions = [] } = actionArg);
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}
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const mutations = [];
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const actions = [];
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// mock commit
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const commit = (type, mutationPayload) => {
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const mutation = { type };
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if (typeof mutationPayload !== 'undefined') {
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mutation.payload = mutationPayload;
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}
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mutations.push(mutation);
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};
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// mock dispatch
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const dispatch = (type, actionPayload) => {
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const dispatchedAction = { type };
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if (typeof actionPayload !== 'undefined') {
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dispatchedAction.payload = actionPayload;
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}
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actions.push(dispatchedAction);
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};
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const validateResults = () => {
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expect({
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mutations,
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actions,
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}).toEqual({
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mutations: expectedMutations,
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actions: expectedActions,
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});
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};
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const result = action(
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{ commit, state, dispatch, rootState: state, rootGetters: state, getters: state },
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payload,
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);
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return (
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result ||
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new Promise((resolve) => {
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// eslint-disable-next-line no-restricted-syntax
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setImmediate(resolve);
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})
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)
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.catch((error) => {
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validateResults();
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throw error;
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})
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.then((data) => {
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validateResults();
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return data;
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});
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};
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