Vue Test Utils mount in multiple tests - vue.js

Question

I am testing my Vue App using Vue Test Utils and Jest. Below is my dashboard component.
<template>
<div class="dashboard-v2">
<div class="component-container">
<component :loading="loading" :key="identifier" :is="currentTab" />
</div>
<SnackBar
v-on:snackBarHide="displaySnackBar = false"
:text="snackBarText"
:show="displaySnackBar"
:type="snackBarType"
/>
</div>
</template>
<script>
import { mapState } from "vuex";
import "#/shared/chart-kick";
import EventBus from "#/shared/event-bus";
import Tabs from "./helpers/Tabs";
import Summary from "./Summary/Index";
import { filters } from "../helpers/filters-details";
import SnackBar from "#/shared/components/SnackBar.vue";
export default {
components: {
Tabs,
Summary,
SnackBar
},
data() {
return {
identifier: +new Date(),
loading: false,
filtersLoading: false,
displaySnackBar: false,
snackBarText: "",
snackBarType: ""
};
},
mounted() {
if (!this.projects.length) this.fetchFilterData();
EventBus.$on("CLEAR_ALL", () => {
this.identifier = +new Date();
this.$store.commit(`dashboardV2/UPDATE_FILTER_STATE`, {});
});
EventBus.$on("filterChange", () => {
this.getExecData();
});
},
computed: {
...mapState("dashboardV2", [
"projects",
"currentTab",
"selectedFilters",
"timeFilter"
])
},
methods: {
fetchFilterData() {
this.filtersLoading = true;
this.$store
.dispatch("dashboardV2/GET_EXEC_FILTER_DATA")
.catch(() => {
this.displaySnackBar = true;
this.snackBarText = "There was some problem while fetching data";
this.snackBarType = "failure";
})
.finally(() => {
this.filtersLoading = false;
});
this.getExecData();
},
getExecData() {
this.loading = true;
let params = {
time_bucket: this.timeFilter,
time_zone_offset: new Date().getTimezoneOffset()
};
filters.map(e => {
params[e.query] = this.selectedFilters[e.value]
? this.selectedFilters[e.value].id
: null;
});
this.$store
.dispatch("dashboardV2/GET_EXEC_DATA", params)
.catch(() => {
this.displaySnackBar = true;
this.snackBarText = "There was some problem while fetching data";
this.snackBarType = "failure";
})
.finally(() => (this.loading = false));
}
}
};
</script>
<style lang="scss" scoped>
#import "#/styles/dashboard.scss";
</style>
Then this is my test file
import Main from "../Main.vue";
import mergeWith from "lodash.mergewith";
import { customizer, createWrapper } from "#/shared/test-helper";
import Vuex from "vuex";
import EventBus from "#/shared/event-bus";
let GET_EXEC_DATA = jest.fn(() => Promise.resolve());
let GET_EXEC_FILTER_DATA = jest.fn(() => Promise.resolve());
export const createStore = (overrides) => {
let storeOptions = {
modules: {
dashboardV2: {
namespaced: true,
state: {
projects: [],
currentTab: "",
selectedFilters: {},
timeFilter: "",
},
actions: {
GET_EXEC_DATA,
GET_EXEC_FILTER_DATA,
},
},
},
};
return new Vuex.Store(mergeWith(storeOptions, overrides, customizer));
};
describe("Loads Main Dashboard", () => {
it("should fetch chart data and filter data", () => {
createWrapper({}, Main, createStore());
expect.assertions(2);
expect(GET_EXEC_DATA).toBeCalled();
expect(GET_EXEC_FILTER_DATA).toBeCalled();
});
it("should call fetch chart data when filter changed", () => {
createWrapper({}, Main, createStore());
EventBus.$emit("filterChange");
expect.assertions(1);
expect(GET_EXEC_DATA).toBeCalledTimes(2);
});
});
My first test is running successfully but my second test is failing because GET_EXEC_DATA is being called 4 times instead of 2 times. Is it because it's being called once in the first test. Then, How do I avoid this?

Answer 1

Actually, I was able to solve this by clearing the mock functions
afterEach(() => {
jest.clearAllMocks();
});