Switch to using vm.$options.provide() to check provide/inject

Instead of using `_provided`

spec/frontend/__helpers__/vue_test_utils_helper.js

@@ -56,15 +56,5 @@ export const extendedWrapper = (wrapper) => {
         return this.findAll(`[data-testid="${id}"]`);
       },
     },
-    // Returns attributes provided to the component via provide/inject
-    // https://vuejs.org/v2/api/#provide-inject
-    provided: {
-      value(key) {
-        // eslint-disable-next-line no-underscore-dangle
-        const provided = this.vm?._provided || {};
-
-        return key ? provided[key] : provided;
-      },
-    },
   });
 };

spec/frontend/__helpers__/vue_test_utils_helper_spec.js

@@ -105,52 +105,5 @@ describe('Vue test utils helpers', () => {
         expect(mockComponent.findAllByTestId(testId)).toHaveLength(2);
       });
     });
-
-    describe('provided', () => {
-      let wrapper;
-
-      beforeEach(() => {
-        wrapper = extendedWrapper(
-          shallowMount({
-            template: '<div>mock component</div>',
-            provide: { fooBar: 'baz', company: 'GitLab' },
-          }),
-        );
-      });
-
-      describe('when called without `key` argument', () => {
-        it('returns an object of provided attributes', () => {
-          expect(wrapper.provided()).toEqual({ fooBar: 'baz', company: 'GitLab' });
-        });
-      });
-
-      describe('when called with `key` argument', () => {
-        describe('when `key` exists in provided attributes', () => {
-          it('returns value of provided attribute', () => {
-            expect(wrapper.provided('fooBar')).toBe('baz');
-          });
-        });
-
-        describe('when `key` does not exist in provided attributes', () => {
-          it('returns `undefined`', () => {
-            expect(wrapper.provided('invalidKey')).toBeUndefined();
-          });
-        });
-      });
-
-      describe('when no attributes are provided', () => {
-        beforeEach(() => {
-          wrapper = extendedWrapper(
-            shallowMount({
-              template: '<div>mock component</div>',
-            }),
-          );
-        });
-
-        it('returns an empty object', () => {
-          expect(wrapper.provided()).toEqual({});
-        });
-      });
-    });
   });
 });

spec/frontend/members/index_spec.js

@@ -46,7 +46,7 @@ describe('initMembersApp', () => {
   it('sets `currentUserId` in provide/inject', () => {
     setup();
 
-    expect(wrapper.provided('currentUserId')).toBe(123);
+    expect(vm.$options.provide().currentUserId).toBe(123);
   });
 
   describe('when `gon.current_user_id` is not set (user is not logged in)', () => {
@@ -54,20 +54,20 @@ describe('initMembersApp', () => {
       window.gon = {};
       setup();
 
-      expect(wrapper.provided('currentUserId')).toBeNull();
+      expect(vm.$options.provide().currentUserId).toBeNull();
     });
   });
 
   it('parses and sets `data-source-id` as `sourceId` in provide/inject', () => {
     setup();
 
-    expect(wrapper.provided('sourceId')).toBe(234);
+    expect(vm.$options.provide().sourceId).toBe(234);
   });
 
   it('parses and sets `data-can-manage-members` as `canManageMembers` in Vuex store', () => {
     setup();
 
-    expect(wrapper.provided('canManageMembers')).toBe(true);
+    expect(vm.$options.provide().canManageMembers).toBe(true);
   });
 
   it('parses and sets `members` in Vuex store', () => {