initial commit

tests/integration/oauth2_authorize_code_flow_test.go

@@ -0,0 +1,110 @@
+/*
+ * 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"
+)
+
+// TestOAuth2AuthorizeCodeFlow verifies the basic authorization code flow works end-to-end.
+// This tests the complete flow from authorization request through consent to token exchange.
+//
+// Steps:
+// 1. Create an OAuth2 application
+// 2. Submit authorization with consent (POST /oauth2/authorize/consent)
+// 3. Exchange authorization code for access token (POST /oauth2/token)
+// 4. Verify token works to access protected resources
+func TestOAuth2AuthorizeCodeFlow(t *testing.T) {
+	client := newTestClient(t)
+	appOwner := createTestAccount(t, client)
+	endUser := createTestAccount(t, client)
+
+	redirectURI := "https://example.com/oauth/callback"
+	appID, _, _, clientSecret := createOAuth2Application(
+		t, client, appOwner,
+		fmt.Sprintf("OAuth2 Basic Flow %d", time.Now().UnixNano()),
+		[]string{redirectURI},
+		[]string{"identify", "email"},
+	)
+
+	authCode, returnedState := authorizeOAuth2(
+		t,
+		client,
+		endUser.Token,
+		appID,
+		redirectURI,
+		[]string{"identify", "email"},
+		"",
+		"",
+		"",
+	)
+	if authCode == "" {
+		t.Fatal("authorization should return an authorization code")
+	}
+	if returnedState == "" {
+		t.Fatal("authorization should return the state parameter")
+	}
+
+	tokenResp := exchangeOAuth2AuthorizationCode(
+		t, client,
+		appID,
+		clientSecret,
+		authCode,
+		redirectURI,
+		"",
+	)
+
+	if tokenResp.AccessToken == "" {
+		t.Fatal("token response must include access_token")
+	}
+	if tokenResp.RefreshToken == "" {
+		t.Fatal("token response must include refresh_token")
+	}
+	if tokenResp.TokenType != "Bearer" {
+		t.Fatalf("token_type should be Bearer, got %s", tokenResp.TokenType)
+	}
+	if tokenResp.ExpiresIn <= 0 {
+		t.Fatalf("expires_in must be positive, got %d", tokenResp.ExpiresIn)
+	}
+	if tokenResp.Scope != "identify email" {
+		t.Fatalf("expected scope 'identify email', got %q", tokenResp.Scope)
+	}
+
+	userInfo := getOAuth2UserInfo(t, client, tokenResp.AccessToken)
+	if userInfo["sub"] == nil {
+		t.Fatal("userinfo must include 'sub' claim")
+	}
+	if userInfo["sub"].(string) != endUser.UserID {
+		t.Fatalf("userinfo 'sub' should be %s, got %v", endUser.UserID, userInfo["sub"])
+	}
+
+	introspection := introspectOAuth2Token(t, client, appID, clientSecret, tokenResp.AccessToken)
+	if !introspection.Active {
+		t.Fatal("introspection should show token as active")
+	}
+	if introspection.ClientID != appID {
+		t.Fatalf("introspection client_id should be %s, got %s", appID, introspection.ClientID)
+	}
+	if introspection.Scope != "identify email" {
+		t.Fatalf("introspection scope should be 'identify email', got %s", introspection.Scope)
+	}
+}