shard: fix GetRange for objects stored in the write-cache

Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>

pkg/local_object_storage/shard/range_test.go

@@ -0,0 +1,93 @@
+package shard_test
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/util/slice"
+	"github.com/nspcc-dev/neofs-node/pkg/core/object"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/writecache"
+	apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
+	objectSDK "github.com/nspcc-dev/neofs-sdk-go/object"
+	"github.com/stretchr/testify/require"
+)
+
+func TestShard_GetRange(t *testing.T) {
+	t.Run("without write cache", func(t *testing.T) {
+		testShardGetRange(t, false)
+	})
+
+	t.Run("with write cache", func(t *testing.T) {
+		testShardGetRange(t, true)
+	})
+}
+
+func testShardGetRange(t *testing.T, hasWriteCache bool) {
+	type testCase struct {
+		hasErr      bool
+		name        string
+		payloadSize int
+		rng         *objectSDK.Range
+	}
+
+	const (
+		writeCacheMaxSize = 1024
+		smallObjectSize   = 2048
+	)
+
+	newRange := func(off, ln uint64) *objectSDK.Range {
+		rng := objectSDK.NewRange()
+		rng.SetOffset(off)
+		rng.SetLength(ln)
+		return rng
+	}
+
+	testCases := []testCase{
+		{false, "small object, good", 1024, newRange(11, 123)},
+		{true, "small object, out of range", 1024, newRange(10, 1020)},
+		{false, "big object, good", 2048, newRange(11, 123)},
+		{true, "big object, out of range", 2048, newRange(100, 2000)},
+	}
+
+	if hasWriteCache {
+		testCases = append(testCases,
+			testCase{false, "object in write-cache, good", 100, newRange(2, 18)},
+			testCase{true, "object in write-cache, out of range", 100, newRange(4, 99)})
+	}
+
+	sh := newCustomShard(t, t.TempDir(), hasWriteCache,
+		[]writecache.Option{writecache.WithMaxMemSize(0), writecache.WithMaxObjectSize(writeCacheMaxSize)},
+		[]blobstor.Option{blobstor.WithSmallSizeLimit(smallObjectSize)})
+	defer releaseShard(sh, t)
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			obj := generateObject(t)
+			addAttribute(obj, "foo", "bar")
+			addPayload(obj, tc.payloadSize)
+
+			addr := object.AddressOf(obj)
+			payload := slice.Copy(obj.Payload())
+
+			var putPrm shard.PutPrm
+			putPrm.SetObject(obj)
+
+			_, err := sh.Put(putPrm)
+			require.NoError(t, err)
+
+			var rngPrm shard.RngPrm
+			rngPrm.SetAddress(addr)
+			rngPrm.SetRange(tc.rng.GetOffset(), tc.rng.GetLength())
+
+			res, err := sh.GetRange(rngPrm)
+			if tc.hasErr {
+				require.ErrorAs(t, err, &apistatus.ObjectOutOfRange{})
+			} else {
+				require.Equal(t,
+					payload[tc.rng.GetOffset():tc.rng.GetOffset()+tc.rng.GetLength()],
+					res.Object().Payload())
+			}
+		})
+	}
+}