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package featureflag
import (
"context"
"io/ioutil"
"testing"
grpc_middleware "github.com/grpc-ecosystem/go-grpc-middleware"
"github.com/grpc-ecosystem/go-grpc-middleware/logging/logrus/ctxlogrus"
"github.com/sirupsen/logrus"
"github.com/sirupsen/logrus/hooks/test"
"github.com/stretchr/testify/require"
"gitlab.com/gitlab-org/gitaly/v14/internal/metadata/featureflag"
"google.golang.org/grpc"
)
func TestUnaryInterceptor(t *testing.T) {
t.Run("no feature flags", func(t *testing.T) {
ctx, hook := setupContext()
callUnary(ctx)
require.Len(t, hook.AllEntries(), 1)
require.Empty(t, hook.LastEntry().Data)
})
t.Run("multiple feature flags", func(t *testing.T) {
ctx, hook := setup()
callUnary(ctx)
verify(t, hook)
})
}
func TestStreamInterceptor(t *testing.T) {
t.Run("no feature flags", func(t *testing.T) {
ctx, hook := setupContext()
callStream(ctx)
require.Len(t, hook.AllEntries(), 1)
require.Empty(t, hook.LastEntry().Data)
})
t.Run("multiple feature flags", func(t *testing.T) {
ctx, hook := setup()
callStream(ctx)
verify(t, hook)
})
}
func callUnary(ctx context.Context) {
// nolint: errcheck
UnaryInterceptor(ctx, nil, nil, func(context.Context, interface{}) (interface{}, error) {
ctxlogrus.Extract(ctx).Info("verify")
return nil, nil
})
}
func callStream(ctx context.Context) {
// nolint: errcheck
StreamInterceptor(ctx, &grpc_middleware.WrappedServerStream{WrappedContext: ctx}, nil, func(interface{}, grpc.ServerStream) error {
ctxlogrus.Extract(ctx).Info("verify")
return nil
})
}
func setup() (context.Context, *test.Hook) {
ctx, hook := setupContext()
ff1 := featureflag.FeatureFlag{Name: "ff1"}
ff2 := featureflag.FeatureFlag{Name: "ff2"}
ctx = featureflag.IncomingCtxWithDisabledFeatureFlag(ctx, ff1)
ctx = featureflag.IncomingCtxWithFeatureFlag(ctx, ff2)
return ctx, hook
}
func setupContext() (context.Context, *test.Hook) {
ctx := context.Background()
logger := logrus.New()
logger.SetOutput(ioutil.Discard)
hook := test.NewLocal(logger)
ctx = ctxlogrus.ToContext(ctx, logrus.NewEntry(logger))
return ctx, hook
}
func verify(t *testing.T, hook *test.Hook) {
t.Helper()
require.Len(t, hook.AllEntries(), 1)
require.Equal(t, logrus.Fields{"feature_flags": "ff1:false ff2:true"}, hook.LastEntry().Data)
}
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