initial commit

tests/integration/emoji_message_sanitization_guild_test.go

@@ -0,0 +1,95 @@
+/*
+ * 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"
+	"net/http"
+	"strings"
+	"testing"
+)
+
+func TestEmoji_MessageSanitization_Guild(t *testing.T) {
+	client := newTestClient(t)
+	user := createTestAccount(t, client)
+	ensureSessionStarted(t, client, user.Token)
+
+	guild := createGuild(t, client, user.Token, "Emoji Test Guild")
+	guildID := parseSnowflake(t, guild.ID)
+
+	resp, err := client.getWithAuth(fmt.Sprintf("/guilds/%d", guildID), user.Token)
+	if err != nil {
+		t.Fatalf("failed to get guild: %v", err)
+	}
+	var guildData struct {
+		SystemChannelID string `json:"system_channel_id"`
+	}
+	decodeJSONResponse(t, resp, &guildData)
+	resp.Body.Close()
+	systemChannelID := parseSnowflake(t, guildData.SystemChannelID)
+
+	t.Run("external emoji replaced for non-premium in guild", func(t *testing.T) {
+		content := "Guild message <:external:999999999999999997>"
+
+		msg := sendChannelMessage(t, client, user.Token, systemChannelID, content)
+
+		fetchResp, err := client.getWithAuth(fmt.Sprintf("/channels/%d/messages/%s", systemChannelID, msg.ID), user.Token)
+		if err != nil {
+			t.Fatalf("failed to fetch message: %v", err)
+		}
+		defer fetchResp.Body.Close()
+		assertStatus(t, fetchResp, http.StatusOK)
+
+		var result struct {
+			Content string `json:"content"`
+		}
+		decodeJSONResponse(t, fetchResp, &result)
+
+		if strings.Contains(result.Content, "<:external:") {
+			t.Error("expected external emoji to be sanitized for non-premium user in guild")
+		}
+	})
+
+	t.Run("multiple emojis sanitized individually", func(t *testing.T) {
+		content := "Start <:one:111> middle <:two:222> end <:three:333>"
+
+		msg := sendChannelMessage(t, client, user.Token, systemChannelID, content)
+
+		fetchResp, err := client.getWithAuth(fmt.Sprintf("/channels/%d/messages/%s", systemChannelID, msg.ID), user.Token)
+		if err != nil {
+			t.Fatalf("failed to fetch message: %v", err)
+		}
+		defer fetchResp.Body.Close()
+		assertStatus(t, fetchResp, http.StatusOK)
+
+		var result struct {
+			Content string `json:"content"`
+		}
+		decodeJSONResponse(t, fetchResp, &result)
+
+		t.Logf("Multi-emoji result: %s", result.Content)
+
+		if strings.Contains(result.Content, "<:one:") ||
+			strings.Contains(result.Content, "<:two:") ||
+			strings.Contains(result.Content, "<:three:") {
+			t.Error("expected all external emojis to be sanitized")
+		}
+	})
+}