1 files changed, 49 insertions, 0 deletions
diff --git a/lib/paseto/v2/json_token_test.go b/lib/paseto/v2/json_token_test.go
new file mode 100644
index 00000000..5081ebf4
--- /dev/null
+++ b/lib/paseto/v2/json_token_test.go
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: BSD-3-Clause
+// SPDX-FileCopyrightText: 2020 Shulhan <ms@kilabit.info>
+
+package pasetov2
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"git.sr.ht/~shulhan/pakakeh.go/lib/test"
+)
+
+func TestJSONToken_Validate(t *testing.T) {
+	now := time.Now().Round(time.Second)
+	peer := Key{}
+
+	issued1sAgo := now.Add(-1 * time.Second)
+	issued6sAgo := now.Add(-6 * time.Second)
+
+	cases := []struct {
+		desc   string
+		jtoken *JSONToken
+		expErr string
+	}{{
+		desc: "With IssuedAt less than current time",
+		jtoken: &JSONToken{
+			IssuedAt: &issued1sAgo,
+		},
+	}, {
+		desc: "With IssuedAt greater than drift",
+		jtoken: &JSONToken{
+			IssuedAt: &issued6sAgo,
+		},
+		expErr: fmt.Sprintf("token issued at %s before current time %s",
+			issued6sAgo, now),
+	}}
+
+	for _, c := range cases {
+		var gotErr string
+
+		err := c.jtoken.Validate("", peer)
+		if err != nil {
+			gotErr = err.Error()
+		}
+
+		test.Assert(t, c.desc, c.expErr, gotErr)
+	}
+}