Add Inner Ring code

pkg/core/container/container_test.go

@@ -0,0 +1,30 @@
+package container
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-node/pkg/core/container/acl/basic"
+	"github.com/stretchr/testify/require"
+)
+
+func TestContainerMethods(t *testing.T) {
+	c := new(Container)
+
+	acl := basic.FromUint32(1)
+	c.SetBasicACL(acl)
+	require.True(t, basic.Equal(acl, c.BasicACL()))
+
+	ownerID := OwnerID{1, 2, 3}
+	c.SetOwnerID(ownerID)
+	require.Equal(t, ownerID, c.OwnerID())
+
+	salt := []byte{4, 5, 6}
+	c.SetSalt(salt)
+	require.Equal(t, salt, c.Salt())
+
+	rule := PlacementRule{
+		ReplFactor: 1,
+	}
+	c.SetPlacementRule(rule)
+	require.Equal(t, rule, c.PlacementRule())
+}