t.Errorf("%s expected %v, got %v", test.name, test.expectedAdded, registration.added)
			}
			if !reflect.DeepEqual(test.expectedRemoved, registration.removed) {
				t.Errorf("%s expected %v, got %v", test.name, test.expectedRemoved, registration.removed)
			}
		})
	}
}

type fakeAPIServiceRegistration struct {
	added   []*apiregistration.APIService
	removed []string
}

		name            string
		file            string
		entries         []*entry
		expectedRemoved int
		expectedOutput  string
	}{
		{
			name:            "entries that are missing do not cause an error",
			file:            "foo:x:102:102:::/bin/false\nbar:x:103:103:::/bin/false\n",
			entries:         []*entry{},
			expectedRemoved: 0,
			expectedOutput:  "foo:x:102:102:::/bin/false\nbar:x:103:103:::/bin/false\n",
		},