Moved to google.golang.org/genproto/googleapis/api/annotations

Fixes #52

vendor/github.com/go-kit/kit/circuitbreaker/hystrix_test.go

@@ -0,0 +1,40 @@
+package circuitbreaker_test
+
+import (
+	"io/ioutil"
+	stdlog "log"
+	"testing"
+	"time"
+
+	"github.com/afex/hystrix-go/hystrix"
+
+	"github.com/go-kit/kit/circuitbreaker"
+)
+
+func TestHystrix(t *testing.T) {
+	stdlog.SetOutput(ioutil.Discard)
+
+	const (
+		commandName   = "my-endpoint"
+		errorPercent  = 5
+		maxConcurrent = 1000
+	)
+	hystrix.ConfigureCommand(commandName, hystrix.CommandConfig{
+		ErrorPercentThreshold: errorPercent,
+		MaxConcurrentRequests: maxConcurrent,
+	})
+
+	var (
+		breaker          = circuitbreaker.Hystrix(commandName)
+		primeWith        = hystrix.DefaultVolumeThreshold * 2
+		shouldPass       = func(n int) bool { return (float64(n) / float64(primeWith+n)) <= (float64(errorPercent-1) / 100.0) }
+		openCircuitError = hystrix.ErrCircuitOpen.Error()
+	)
+
+	// hystrix-go uses buffered channels to receive reports on request success/failure,
+	// and so is basically impossible to test deterministically. We have to make sure
+	// the report buffer is emptied, by injecting a sleep between each invocation.
+	requestDelay := 5 * time.Millisecond
+
+	testFailingEndpoint(t, breaker, primeWith, shouldPass, requestDelay, openCircuitError)
+}