[#265] pkg/reputation: Implement PeerID and Trust types

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/reputation/trust_test.go

@@ -0,0 +1,41 @@
+package reputation_test
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-api-go/pkg/reputation"
+	reputationtest "github.com/nspcc-dev/neofs-api-go/pkg/reputation/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestTrust(t *testing.T) {
+	trust := reputation.NewTrust()
+
+	id := reputationtest.GeneratePeerID()
+	trust.SetPeer(id)
+	require.Equal(t, id, trust.Peer())
+
+	val := 1.5
+	trust.SetValue(val)
+	require.Equal(t, val, trust.Value())
+
+	t.Run("binary encoding", func(t *testing.T) {
+		trust := reputationtest.GenerateTrust()
+		data, err := trust.Marshal()
+		require.NoError(t, err)
+
+		trust2 := reputation.NewTrust()
+		require.NoError(t, trust2.Unmarshal(data))
+		require.Equal(t, trust, trust2)
+	})
+
+	t.Run("JSON encoding", func(t *testing.T) {
+		trust := reputationtest.GenerateTrust()
+		data, err := trust.MarshalJSON()
+		require.NoError(t, err)
+
+		trust2 := reputation.NewTrust()
+		require.NoError(t, trust2.UnmarshalJSON(data))
+		require.Equal(t, trust, trust2)
+	})
+}