1// Copyright (c) 2016 Uber Technologies, Inc. 2// 3// Permission is hereby granted, free of charge, to any person obtaining a copy 4// of this software and associated documentation files (the "Software"), to deal 5// in the Software without restriction, including without limitation the rights 6// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7// copies of the Software, and to permit persons to whom the Software is 8// furnished to do so, subject to the following conditions: 9// 10// The above copyright notice and this permission notice shall be included in 11// all copies or substantial portions of the Software. 12// 13// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19// THE SOFTWARE. 20 21package atomic 22 23import ( 24 "errors" 25 "testing" 26 27 "github.com/stretchr/testify/require" 28) 29 30func TestErrorByValue(t *testing.T) { 31 err := &Error{} 32 require.Nil(t, err.Load(), "Initial value shall be nil") 33} 34 35func TestNewErrorWithNilArgument(t *testing.T) { 36 err := NewError(nil) 37 require.Nil(t, err.Load(), "Initial value shall be nil") 38} 39 40func TestErrorCanStoreNil(t *testing.T) { 41 err := NewError(errors.New("hello")) 42 err.Store(nil) 43 require.Nil(t, err.Load(), "Stored value shall be nil") 44} 45 46func TestNewErrorWithError(t *testing.T) { 47 err1 := errors.New("hello1") 48 err2 := errors.New("hello2") 49 50 atom := NewError(err1) 51 require.Equal(t, err1, atom.Load(), "Expected Load to return initialized value") 52 53 atom.Store(err2) 54 require.Equal(t, err2, atom.Load(), "Expected Load to return overridden value") 55} 56