Add Inner Ring code

pkg/core/netmap/epoch/relation_test.go

@@ -0,0 +1,40 @@
+package epoch
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestEpochRelations(t *testing.T) {
+	items := []struct {
+		relFn func(Epoch, Epoch) bool
+
+		base, ok, fail uint64
+	}{
+		{relFn: EQ, base: 1, ok: 1, fail: 2},
+		{relFn: NE, base: 1, ok: 2, fail: 1},
+		{relFn: LT, base: 1, ok: 2, fail: 0},
+		{relFn: GT, base: 1, ok: 0, fail: 2},
+		{relFn: LE, base: 1, ok: 1, fail: 0},
+		{relFn: LE, base: 1, ok: 2, fail: 0},
+		{relFn: GE, base: 1, ok: 0, fail: 2},
+		{relFn: GE, base: 1, ok: 1, fail: 2},
+	}
+
+	for _, item := range items {
+		require.True(t,
+			item.relFn(
+				FromUint64(item.base),
+				FromUint64(item.ok),
+			),
+		)
+
+		require.False(t,
+			item.relFn(
+				FromUint64(item.base),
+				FromUint64(item.fail),
+			),
+		)
+	}
+}