rename tokens to token

token/internal/varsig/varsig_test.go

@@ -0,0 +1,51 @@
+package varsig_test
+
+import (
+	"encoding/base64"
+	"fmt"
+	"testing"
+
+	"github.com/libp2p/go-libp2p/core/crypto/pb"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/ucan-wg/go-ucan/token/internal/varsig"
+)
+
+func TestDecode(t *testing.T) {
+	t.Parallel()
+
+	notAHeader := base64.RawStdEncoding.EncodeToString([]byte("not a header"))
+	keyType, err := varsig.Decode([]byte(notAHeader))
+	assert.Equal(t, pb.KeyType(-1), keyType)
+	assert.ErrorIs(t, err, varsig.ErrUnknownHeader)
+}
+
+func ExampleDecode() {
+	hdr, err := base64.RawStdEncoding.DecodeString("NIUkEoACcQ")
+	if err != nil {
+		fmt.Println(err.Error())
+
+		return
+	}
+
+	keyType, _ := varsig.Decode(hdr)
+	fmt.Println(keyType.String())
+	// Output:
+	// RSA
+}
+
+func TestEncode(t *testing.T) {
+	t.Parallel()
+
+	header, err := varsig.Encode(pb.KeyType(99))
+	assert.Nil(t, header)
+	assert.ErrorIs(t, err, varsig.ErrUnknownKeyType)
+}
+
+func ExampleEncode() {
+	header, _ := varsig.Encode(pb.KeyType_RSA)
+	fmt.Println(base64.RawStdEncoding.EncodeToString(header))
+
+	// Output:
+	// NIUkEoACcQ
+}