diff --git a/admin/src/components/ConfirmRegisterMailFormular.spec.js b/admin/src/components/ConfirmRegisterMailFormular.spec.js
index a53fcae02..7fd71a37d 100644
--- a/admin/src/components/ConfirmRegisterMailFormular.spec.js
+++ b/admin/src/components/ConfirmRegisterMailFormular.spec.js
@@ -3,6 +3,8 @@ import ConfirmRegisterMailFormular from './ConfirmRegisterMailFormular.vue'
 
 const localVue = global.localVue
 
+const apolloMutateMock = jest.fn().mockResolvedValue()
+
 const mocks = {
   $moment: jest.fn(() => {
     return {
@@ -14,10 +16,13 @@ const mocks = {
       }),
     }
   }),
+  $apollo: {
+    mutate: apolloMutateMock,
+  },
 }
 
 const propsData = {
-  email: '',
+  email: 'bob@baumeister.de',
   dateLastSend: '',
 }
 
@@ -36,5 +41,27 @@ describe('ConfirmRegisterMailFormular', () => {
     it('has a DIV element with the class.component-confirm-register-mail', () => {
       expect(wrapper.find('.component-confirm-register-mail').exists()).toBeTruthy()
     })
+
+    describe('send register mail with success', () => {
+      beforeEach(() => {
+        wrapper.find('button.test-button').trigger('click')
+      })
+
+      it('calls the API', () => {
+        expect(apolloMutateMock).toBeCalled()
+      })
+    })
+
+    describe('send register mail with error', () => {
+      beforeEach(() => {
+        apolloMutateMock.mockRejectedValue({ message: 'OUCH!' })
+        wrapper = Wrapper()
+        wrapper.find('button.test-button').trigger('click')
+      })
+
+      it('calls the API', () => {
+        expect(apolloMutateMock).toBeCalled()
+      })
+    })
   })
 })