redux saga put not dispatching action - enzyme

Question

I'm trying to to do integration tests, by mounting a smart connected component.
The fetch action that is within componentDidMount of my smart components dispatches just fine, and it's taken by my Saga. Although it is supposed to put a success action, it doesn't .
Here is my testing code :
import React from 'react'
import { Provider } from 'react-redux'
import configureMockStore from 'redux-mock-store'
import MockAdapter from 'axios-mock-adapter'
import Enzyme,{ mount,render } from 'enzyme'
import Tasks from '../containers/tasks.jsx'
import createSagaMiddleware from 'redux-saga'
import axios from "axios";
import Adapter from 'enzyme-adapter-react-16';
import mySaga from '../actions/tasksSaga'
import { createStore, combineReducers, applyMiddleware } from 'redux'
import reducer from '../reducers'
Enzyme.configure({ adapter: new Adapter() });
describe('App', () => {
// create the saga middleware
const sagaMiddleware = createSagaMiddleware()
const mock = new MockAdapter(axios)
const state = {
tasksReducer:{
tasks:[]
},
uiReducer :{
}
};
const todos = [
{
id: 1,
title: 'todo1',
description: 'nice'
},
{
id: 2,
title: 'todo2',
description: 'nice'
}
]
beforeAll(() => {
mock.onGet('http://localhost:9001/tasks').reply(200, {tasks:todos})
})
it('renders an App container', () => {
const store = createStore(
reducer,
applyMiddleware(sagaMiddleware),
)
sagaMiddleware.run(mySaga)
const wrapper = mount(
<Provider store={store}>
<Tasks />
</Provider>
)
wrapper.instance().forceUpdate()
expect(wrapper.find('Task')).toHaveLength(3)
})
})
My success action is never called although data is good.