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package featureflag
import (
"context"
"testing"
"github.com/stretchr/testify/require"
"google.golang.org/grpc/metadata"
)
var mockFeatureFlag = FeatureFlag{"turn meow on", false}
func TestIncomingCtxWithFeatureFlag(t *testing.T) {
ctx := context.Background()
require.False(t, IsEnabled(ctx, mockFeatureFlag))
ctx = IncomingCtxWithFeatureFlag(ctx, mockFeatureFlag)
require.True(t, IsEnabled(ctx, mockFeatureFlag))
}
func TestOutgoingCtxWithFeatureFlag(t *testing.T) {
ctx := context.Background()
require.False(t, IsEnabled(ctx, mockFeatureFlag))
ctx = OutgoingCtxWithFeatureFlags(ctx, mockFeatureFlag)
require.False(t, IsEnabled(ctx, mockFeatureFlag))
// simulate an outgoing context leaving the process boundary and then
// becoming an incoming context in a new process boundary
md, ok := metadata.FromOutgoingContext(ctx)
require.True(t, ok)
ctx = metadata.NewIncomingContext(context.Background(), md)
require.True(t, IsEnabled(ctx, mockFeatureFlag))
}
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