[#87] Allow canonical X-Attribute-Neofs-* headers

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

uploader/filter_test.go

@@ -0,0 +1,32 @@
+package uploader
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-sdk-go/pkg/logger"
+	"github.com/stretchr/testify/require"
+	"github.com/valyala/fasthttp"
+)
+
+func TestFilter(t *testing.T) {
+	log, err := logger.New()
+	require.NoError(t, err)
+
+	req := &fasthttp.RequestHeader{}
+	req.DisableNormalizing()
+	req.Set("X-Attribute-Neofs-Expiration-Epoch1", "101")
+	req.Set("X-Attribute-NEOFS-Expiration-Epoch2", "102")
+	req.Set("X-Attribute-neofs-Expiration-Epoch3", "103")
+	req.Set("X-Attribute-MyAttribute", "value")
+
+	expected := map[string]string{
+		"__NEOFS__EXPIRATION_EPOCH1": "101",
+		"MyAttribute":                "value",
+		"__NEOFS__EXPIRATION_EPOCH3": "103",
+		"__NEOFS__EXPIRATION_EPOCH2": "102",
+	}
+
+	result := filterHeaders(log, req)
+
+	require.Equal(t, expected, result)
+}