text: import isChangedValue from '../isChangedValue';
  
  const initialValues = {
      displayName: 'React Firebase Authentication',
      email: 'react.firebase.authentication@90milesbridge.com',
      phoneNumber: undefined,
      password: undefined,
  };
  
  describe('isChangedValue in <Profile/> page', () => {
      it('should return "false" when any values is changed', () => {
          const currentValues = {
              displayName: 'React Firebase Authentication',
              email: 'react.firebase.authentication@90milesbridge.com',
              phoneNumber: undefined,
              password: undefined,
          };
          expect(isChangedValue(currentValues, initialValues)).toBe(false);
      });
      it('should return "true" when the displayName value is changed', () => {
          const currentValues = {
              displayName: 'React Firebase',
              email: 'react.firebase.authentication@90milesbridge.com',
              phoneNumber: undefined,
              password: undefined,
          };
          expect(isChangedValue(currentValues, initialValues)).toBe(true);
      });
      it('should return "true" when the email value is changed', () => {
          const currentValues = {
              displayName: 'React Firebase Authentication',
              email: 'react.authentication@90milesbridge.com',
              phoneNumber: undefined,
              password: undefined,
          };
          expect(isChangedValue(currentValues, initialValues)).toBe(true);
      });
      it('should return "true" when the phoneNumber value is changed', () => {
          const currentValues = {
              displayName: 'React Firebase Authentication',
              email: 'react.firebase.authentication@90milesbridge.com',
              phoneNumber: '12345678',
              password: undefined,
          };
          expect(isChangedValue(currentValues, initialValues)).toBe(true);
      });
      it('should return "true" when the password value is changed', () => {
          const currentValues = {
              displayName: 'React Firebase Authentication',
              email: 'react.firebase.authentication@90milesbridge.com',
              phoneNumber: undefined,
              password: '90milesbridge',
          };
          expect(isChangedValue(currentValues, initialValues)).toBe(true);
      });
  });
  