repository_test.dart

//Note: This code is just for demonstration purpose

void main(){
  test("fetch() should return an instance of student on remoteDataSource's fetch success", () {
    Repository repo = Repository(MockRemoteDateSourceSuccess());
    final result = repo.fetch();
    expect(result, isInstanceOf<Student>());
  });

  test("fetch() should throw an exception on remoteDataSource's fetch throws any exception", () {
    Repository repo = Repository(MockRemoteDateSourceFailure());
    expect(() => repo.fetch(), throwsException);
  });
}