1 // Copyright (c) 2016 Uber Technologies, Inc.
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4 // of this software and associated documentation files (the "Software"), to deal
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8 // furnished to do so, subject to the following conditions:
10 // The above copyright notice and this permission notice shall be included in
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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
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21 // Package exit provides stubs so that unit tests can exercise code that calls
27 var real = func() { os.Exit(1) }
29 // Exit normally terminates the process by calling os.Exit(1). If the package
30 // is stubbed, it instead records a call in the testing spy.
35 // A StubbedExit is a testing fake for os.Exit.
36 type StubbedExit struct {
41 // Stub substitutes a fake for the call to os.Exit(1).
42 func Stub() *StubbedExit {
43 s := &StubbedExit{prev: real}
48 // WithStub runs the supplied function with Exit stubbed. It returns the stub
49 // used, so that users can test whether the process would have crashed.
50 func WithStub(f func()) *StubbedExit {
57 // Unstub restores the previous exit function.
58 func (se *StubbedExit) Unstub() {
62 func (se *StubbedExit) exit() {