github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/utils/once_test.go (about)

     1  /*
     2   * Copyright (C) 2017 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package utils
    19  
    20  import (
    21  	"testing"
    22  
    23  	"github.com/stretchr/testify/assert"
    24  )
    25  
    26  func TestProviderFunctionIsCalledOnce(t *testing.T) {
    27  	val := 1
    28  
    29  	incOnce := CallOnce(func() {
    30  		val = val + 1
    31  	})
    32  	incOnce()
    33  	incOnce()
    34  	assert.Equal(t, 2, val)
    35  }