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probe_test.go
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probe_test.go
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package xtransport_test
import (
"sync"
"testing"
"github.com/actforgood/xrand"
"github.com/actforgood/xtransport"
"github.com/actforgood/xtransport/testing/assert"
)
func TestProbe(t *testing.T) {
t.Parallel()
// arrange
subject := new(xtransport.Probe)
// act
defaultState := subject.IsReady()
subject.SetReady(true)
actualState := subject.IsReady()
// assert
assert.Equal(t, false, defaultState)
assert.True(t, actualState)
}
// TestProbe_concurrency accesses ready state of Probe
// in a concurrent environment. This test does not assert
// something in particular, it is aimed to be run with '--race'
// flag and see that no data race occurs.
func TestProbe_concurrency(t *testing.T) {
t.Parallel()
// arrange
var (
subject = new(xtransport.Probe)
wg sync.WaitGroup
)
wg.Add(20)
// act
for i := 0; i < 10; i++ {
go func() {
rand := xrand.Intn(2)
if rand == 0 {
subject.SetReady(false)
} else {
subject.SetReady(true)
}
wg.Done()
}()
}
for i := 0; i < 10; i++ {
go func() {
_ = subject.IsReady()
wg.Done()
}()
}
wg.Wait()
}