vuex-tester

mock the vuex environment to run your commit and dispatch without any extra adjustment, test as closer as possible to your product environment.

NO NEED to split your actions and mutations

full flow test is best test.

import VuexTester from 'vuex-tester';

const store = {
    namespace: true,
    state: {
      abc: 1
    },
    mutations: {
      SET(state, payload) {
        state.abc = payload;
      },
      PLUS(state, payload) {
        state.abc = state.abc + payload;
      },
    },
    actions: {
      _plus(context, params) {
        console.log("context -> ", context);
        context.commit("PLUS", params);
      }
    },
    getters: {
      getStatePlus(state, getters, rootState, rootGetters) {
        console.log(
          "getters getStatePlus-> ",
          state,
          rootState,
          Object.getOwnPropertyNames(getters),
          Object.getOwnPropertyNames(rootGetters)
        );
        return state.abc + 1;
      }
    },
    modules: {
      sub: {
        namespace: true,
        state: {
          cbd: 100
        },
        mutations: {
          SET(state, payload) {
            state.cbd = payload;
          },
          MINUS(state, payload) {
            console.log(" MINUS arg-> ", arguments);
            state.cbd = state.cbd - payload;
            console.log(" MINUS result-> ", state.cbd);
          }
        },
        actions: {
          _minus(context, params) {
            console.log("context -> ", context);
            context.commit("MINUS", params);
          }
        },
        getters: {
          getStateMinus(state, getters, rootState, rootGetters) {
            console.log(
              "getters getStateMinus-> ",
              state,
              rootState,
              Object.getOwnPropertyNames(getters),
              Object.getOwnPropertyNames(rootGetters)
            );
            return state.cbd - 1;
          }
        },
        modules: {
          subTie: {
            namespace: true,
            state: {
              xyz: 55
            },
            mutations: {
              SET(state, payload) {
                state.xyz = payload;
              },
              MULTIPLY(state, payload) {
                state.xyz = state.xyz * payload;
              }
            },
            actions: {
              _multiply(context, params) {
                console.log("context -> ", context);
                context.commit("MULTIPLY", params);
              }
            },
            getters: {
              getStateMultiplyDouble(state) {
                console.log("getters getStateMultiplyDouble-> ", arguments);
                return state.xyz * 2;
              }
            }
          }
        }
      }
    }
};

const { state, commit, dispatch } = new VuexTester(store).update();
// if you just want to test the part of subTie, just like this;
// const { state, commit, dispatch } = new VuexTester(store.modules.sub.modules.subTie, 'sub/subTie').update();

describe("test state", async () => {
  it("state abc", async function() {
    expect(state.abc).eql(1);
  });
});
describe("test rootState", async () => {
  it("rootState abc", async function() {
    expect(rootState.abc).eql(1);
  });
});
describe("test mutations", async () => {
  it("mutations SET", async function() {
    commit('SET', 100);
    expect(state.abc).eql(100);
  });
  it("mutations PLUS", async function() {
    commit('SET', 100);
    commit('PLUS', 10);
    expect(state.abc).eql(110);
  });
});
describe("test actions", async () => {
  it("actions _plus", async function() {
    commit('SET', 100);
    dispatch('_plus', 9);
    expect(state.abc).eql(109);
  });
});
describe("test getters", async () => {
  it("getters getStatePlus", async function() {
    commit('SET', 100);
    expect(getters.getStatePlus).eql(101);
  });
});
describe("test rootGetters", async () => {
  it("rootGetters getStatePlus", async function() {
    commit('SET', 100);
    expect(rootGetters.getStatePlus).eql(101);
  });
});