added test

x-pack/legacy/plugins/uptime/public/state/effects/__tests__/fecth_effect.test.ts

@@ -0,0 +1,78 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { call, put } from 'redux-saga/effects';
+import { fetchEffectFactory } from '../fetch_effect';
+import { indexStatusAction } from '../../actions';
+
+describe('fetch saga effect factory', () => {
+  const asyncAction = indexStatusAction;
+  const calledAction = asyncAction.get();
+  let fetchEffect;
+
+  it('works with success workflow', () => {
+    const indexStatusResult = { indexExists: true, docCount: 2712532 };
+    const fetchStatus = async () => {
+      return { indexExists: true, docCount: 2712532 };
+    };
+    fetchEffect = fetchEffectFactory(
+      fetchStatus,
+      asyncAction.success,
+      asyncAction.fail
+    )(calledAction);
+    let next = fetchEffect.next();
+
+    expect(next.value).toEqual(call(fetchStatus, calledAction.payload));
+
+    const successResult = put(asyncAction.success(indexStatusResult));
+
+    next = fetchEffect.next(indexStatusResult);
+
+    expect(next.value).toEqual(successResult);
+  });
+
+  it('works with error workflow', () => {
+    const indexStatusResultError = new Error('no heartbeat index found');
+    const fetchStatus = async () => {
+      return indexStatusResultError;
+    };
+    fetchEffect = fetchEffectFactory(
+      fetchStatus,
+      asyncAction.success,
+      asyncAction.fail
+    )(calledAction);
+    let next = fetchEffect.next();
+
+    expect(next.value).toEqual(call(fetchStatus, calledAction.payload));
+
+    const errorResult = put(asyncAction.fail(indexStatusResultError));
+
+    next = fetchEffect.next(indexStatusResultError);
+
+    expect(next.value).toEqual(errorResult);
+  });
+
+  it('works with throw error workflow', () => {
+    const unExpectedError = new Error('no url found, so throw error');
+    const fetchStatus = async () => {
+      return await fetch('/some/url');
+    };
+    fetchEffect = fetchEffectFactory(
+      fetchStatus,
+      asyncAction.success,
+      asyncAction.fail
+    )(calledAction);
+    let next = fetchEffect.next().value;
+
+    expect(next).toEqual(call(fetchStatus, calledAction.payload));
+
+    const unexpectedErrorResult = put(asyncAction.fail(unExpectedError));
+
+    next = fetchEffect.next(unExpectedError);
+
+    expect(next.value).toEqual(unexpectedErrorResult);
+  });
+});

x-pack/legacy/plugins/uptime/public/state/effects/fetch_effect.ts

@@ -25,10 +25,8 @@ export function fetchEffectFactory<T, R, S, F>(
 ) {
   return function*(action: Action<T>) {
     try {
-      const {
-        payload: { ...params },
-      } = action;
-      const response = yield call(fetch, params);
+      const response = yield call(fetch, action.payload);
+
       if (response instanceof Error) {
         // eslint-disable-next-line no-console
         console.error(response);