initial commit

tests/integration/oauth2_token_expiration_consistency_test.go

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package integration
+
+import (
+	"fmt"
+	"testing"
+	"time"
+)
+
+// TestOAuth2TokenExpirationConsistency verifies that expires_in values
+// are consistent across different token operations.
+func TestOAuth2TokenExpirationConsistency(t *testing.T) {
+	client := newTestClient(t)
+	appOwner := createTestAccount(t, client)
+	endUser := createTestAccount(t, client)
+
+	redirectURI := "https://example.com/expire/consistency"
+	appID, _, _, clientSecret := createOAuth2Application(
+		t, client, appOwner,
+		fmt.Sprintf("Consistency %d", time.Now().UnixNano()),
+		[]string{redirectURI},
+		[]string{"identify"},
+	)
+
+	expiresInValues := []int{}
+
+	for i := 0; i < 3; i++ {
+		authCode, _ := authorizeOAuth2(
+			t,
+			client,
+			endUser.Token,
+			appID,
+			redirectURI,
+			[]string{"identify"},
+			fmt.Sprintf("state-%d", i),
+			"",
+			"",
+		)
+		tokens := exchangeOAuth2AuthorizationCode(
+			t, client,
+			appID,
+			clientSecret,
+			authCode,
+			redirectURI,
+			"",
+		)
+
+		expiresInValues = append(expiresInValues, tokens.ExpiresIn)
+
+		if i < 2 {
+			time.Sleep(100 * time.Millisecond)
+		}
+	}
+
+	firstValue := expiresInValues[0]
+	for i, val := range expiresInValues {
+		if abs(val-firstValue) > 5 {
+			t.Errorf("expires_in[%d]=%d differs significantly from first value %d", i, val, firstValue)
+		}
+	}
+}