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package test_helpers
import (
"io"
"sync"
)
type FakeOutputInterceptor struct {
intercepting bool
forwardingWriter io.Writer
interceptedOutput string
lock *sync.Mutex
}
func NewFakeOutputInterceptor() *FakeOutputInterceptor {
return &FakeOutputInterceptor{
lock: &sync.Mutex{},
forwardingWriter: io.Discard,
}
}
func (interceptor *FakeOutputInterceptor) AppendInterceptedOutput(s string) {
interceptor.lock.Lock()
defer interceptor.lock.Unlock()
interceptor.interceptedOutput += s
interceptor.forwardingWriter.Write([]byte(s))
}
func (interceptor *FakeOutputInterceptor) StartInterceptingOutput() {
interceptor.StartInterceptingOutputAndForwardTo(io.Discard)
}
func (interceptor *FakeOutputInterceptor) StartInterceptingOutputAndForwardTo(w io.Writer) {
interceptor.lock.Lock()
defer interceptor.lock.Unlock()
interceptor.forwardingWriter = w
interceptor.intercepting = true
interceptor.interceptedOutput = ""
}
func (interceptor *FakeOutputInterceptor) PauseIntercepting() {
interceptor.lock.Lock()
defer interceptor.lock.Unlock()
interceptor.intercepting = false
}
func (interceptor *FakeOutputInterceptor) ResumeIntercepting() {
interceptor.lock.Lock()
defer interceptor.lock.Unlock()
interceptor.intercepting = true
}
func (interceptor *FakeOutputInterceptor) StopInterceptingAndReturnOutput() string {
interceptor.lock.Lock()
defer interceptor.lock.Unlock()
interceptor.intercepting = false
return interceptor.interceptedOutput
}
func (interceptor *FakeOutputInterceptor) Shutdown() {
}
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