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jest - run test on individual file - and what need test to Vue file - test vue - vue-test-utils.vuejs.org

test vue:
https://vue-test-utils.vuejs.org/api/wrapper/#isempty


yarn test --testPathPattern=".*UsersTree.test.js"


snapshot:
https://jestjs.io/docs/en/snapshot-testing

For VUE:

https://vue-test-utils.vuejs.org/guides/#getting-started

1. Visuals

expect(wrapper.element).toMatchSnapshot() expect(wrapper.html()).toContain('primary--text')

2. Computed

expect(wrapper.vm.items[0]).toHaveProperty('name', 'FreshinUp')

3. method

const wrapper = shallowMount(Component, {
propsData: {
}
})
wrapper.setData({

})
await wrapper.vm.$nextTick()
expect(wrapper.html()).toContain('xxx') })
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