Replace deprecated Vue test utils shallow function

Author: maoberlehner

test/module-namespaced.test.js

@@ -1,5 +1,5 @@
 import Vuex from 'vuex';
-import { createLocalVue, shallow } from '@vue/test-utils';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
 
 import { createHelpers, getField, updateField } from './package/src';
 
@@ -44,7 +44,7 @@ describe(`Component initialized with namespaced Vuex module.`, () => {
       },
     });
 
-    wrapper = shallow(Component, { localVue, store });
+    wrapper = shallowMount(Component, { localVue, store });
   });
 
   test(`It should render the component.`, () => {

test/module.test.js

@@ -1,5 +1,5 @@
 import Vuex from 'vuex';
-import { createLocalVue, shallow } from '@vue/test-utils';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
 
 import { getField, mapFields, updateField } from './package/src';
 
@@ -38,7 +38,7 @@ describe(`Component initialized with Vuex module.`, () => {
       },
     });
 
-    wrapper = shallow(Component, { localVue, store });
+    wrapper = shallowMount(Component, { localVue, store });
   });
 
   test(`It should render the component.`, () => {

test/multi-row.test.js

@@ -1,5 +1,5 @@
 import Vuex from 'vuex';
-import { createLocalVue, shallow } from '@vue/test-utils';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
 
 import { mapMultiRowFields, getField, updateField } from '../src';
 
@@ -48,7 +48,7 @@ describe(`Component initialized with multi row setup.`, () => {
       },
     });
 
-    wrapper = shallow(Component, { localVue, store });
+    wrapper = shallowMount(Component, { localVue, store });
   });
 
   test(`It should render the component.`, () => {

test/nested-store.test.js

@@ -1,5 +1,5 @@
 import Vuex from 'vuex';
-import { createLocalVue, shallow } from '@vue/test-utils';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
 
 import { createHelpers, getField, updateField } from './package/src';
 
@@ -43,7 +43,7 @@ describe(`Component initialized with customized getter and mutation functions.`,
       },
     });
 
-    wrapper = shallow(Component, { localVue, store });
+    wrapper = shallowMount(Component, { localVue, store });
   });
 
   test(`It should render the component.`, () => {

test/packaged.test.js

@@ -1,6 +1,6 @@
 /* eslint-disable import/no-duplicates */
 import Vuex from 'vuex';
-import { createLocalVue, shallow } from '@vue/test-utils';
+import { createLocalVue, shallowMount } from '@vue/test-utils';
 
 import componentFactory from './utils/component';
 import storeFactory from './utils/store';
@@ -65,7 +65,7 @@ localVue.use(Vuex);
 
     beforeEach(() => {
       store = storeFactory({ getField, updateField });
-      wrapper = shallow(Component, { localVue, store });
+      wrapper = shallowMount(Component, { localVue, store });
     });
 
     test(`It should render the component.`, () => {