account_repository_test3.go

func TestUpdateAccountUpdatesAccountWithNewData(t *testing.T) {
	repository := createRepositoryWithData(fakeData)

	newBalance := "200"
	updateValue := map[string]interface{}{"Balance": newBalance}

	account, err := repository.UpdateAccount(id, updateValue)

	assert.Equal(t, id, account.Id)
	assert.Equal(t, "John Doe", account.Name)
	assert.Equal(t, 200, account.Balance)
	assert.Nil(t, err)
}