[#163] Support JSON bearer token

Signed-off-by: Roman Loginov <r.loginov@yadro.com>

tokens/bearer-token_test.go

@@ -98,8 +98,14 @@ func TestFetchBearerToken(t *testing.T) {
 	tkn := new(bearer.Token)
 	tkn.ForUser(uid)
 
-	t64 := base64.StdEncoding.EncodeToString(tkn.Marshal())
-	require.NotEmpty(t, t64)
+	jsonToken, err := tkn.MarshalJSON()
+	require.NoError(t, err)
+
+	jsonTokenBase64 := base64.StdEncoding.EncodeToString(jsonToken)
+	binaryTokenBase64 := base64.StdEncoding.EncodeToString(tkn.Marshal())
+
+	require.NotEmpty(t, jsonTokenBase64)
+	require.NotEmpty(t, binaryTokenBase64)
 
 	cases := []struct {
 		name   string
@@ -143,25 +149,47 @@ func TestFetchBearerToken(t *testing.T) {
 			error:  "can't unmarshal bearer token",
 		},
 		{
-			name:   "bad header, but good cookie",
+			name:   "bad header, but good cookie with binary token",
 			header: "dGVzdAo=",
-			cookie: t64,
+			cookie: binaryTokenBase64,
 			expect: tkn,
 		},
 		{
-			name:   "bad cookie, but good header",
-			header: t64,
+			name:   "bad cookie, but good header with binary token",
+			header: binaryTokenBase64,
 			cookie: "dGVzdAo=",
 			expect: tkn,
 		},
 		{
-			name:   "ok for header",
-			header: t64,
+			name:   "bad header, but good cookie with json token",
+			header: "dGVzdAo=",
+			cookie: jsonTokenBase64,
 			expect: tkn,
 		},
 		{
-			name:   "ok for cookie",
-			cookie: t64,
+			name:   "bad cookie, but good header with json token",
+			header: jsonTokenBase64,
+			cookie: "dGVzdAo=",
+			expect: tkn,
+		},
+		{
+			name:   "ok for header with binary token",
+			header: binaryTokenBase64,
+			expect: tkn,
+		},
+		{
+			name:   "ok for cookie with binary token",
+			cookie: binaryTokenBase64,
+			expect: tkn,
+		},
+		{
+			name:   "ok for header with json token",
+			header: jsonTokenBase64,
+			expect: tkn,
+		},
+		{
+			name:   "ok for cookie with json token",
+			cookie: jsonTokenBase64,
 			expect: tkn,
 		},
 	}