[#222] Add tests for shards

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

pkg/local_object_storage/shard/get_test.go

@@ -0,0 +1,65 @@
+package shard_test
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
+	"github.com/stretchr/testify/require"
+)
+
+func TestShard_Get(t *testing.T) {
+	sh := newShard(t, false)
+	shWC := newShard(t, true)
+
+	defer func() {
+		releaseShard(sh, t)
+		releaseShard(shWC, t)
+	}()
+
+	t.Run("without write cache", func(t *testing.T) {
+		testShardGet(t, sh)
+	})
+
+	t.Run("with write cache", func(t *testing.T) {
+		testShardGet(t, shWC)
+	})
+}
+
+func testShardGet(t *testing.T, sh *shard.Shard) {
+	obj := generateRawObject(t)
+	addAttribute(obj, "foo", "bar")
+
+	putPrm := new(shard.PutPrm)
+	getPrm := new(shard.GetPrm)
+
+	t.Run("small object", func(t *testing.T) {
+		addPayload(obj, 1<<5)
+
+		putPrm.WithObject(obj.Object())
+
+		_, err := sh.Put(putPrm)
+		require.NoError(t, err)
+
+		getPrm.WithAddress(obj.Object().Address())
+
+		res, err := sh.Get(getPrm)
+		require.NoError(t, err)
+		require.Equal(t, obj.Object(), res.Object())
+	})
+
+	t.Run("big object", func(t *testing.T) {
+		obj.SetID(generateOID())
+		addPayload(obj, 1<<20) // big obj
+
+		putPrm.WithObject(obj.Object())
+
+		_, err := sh.Put(putPrm)
+		require.NoError(t, err)
+
+		getPrm.WithAddress(obj.Object().Address())
+
+		res, err := sh.Get(getPrm)
+		require.NoError(t, err)
+		require.Equal(t, obj.Object(), res.Object())
+	})
+}