[Unit Test] messages: deleteMessages

tests/helpers/messages/deleteMessages.ts

@@ -0,0 +1,36 @@
+import { Bot } from "../../../src/bot.ts";
+import { assertExists } from "../../deps.ts";
+import { delayUntil } from "../../utils.ts";
+
+async function ifItFailsBlameWolf(bot: Bot, channelId: bigint, reason?: string) {
+  const message = await bot.helpers.sendMessage(channelId, "Hello World!");
+  const secondMessage = await bot.helpers.sendMessage(channelId, "Hello World 2!");
+
+  // Assertions
+  assertExists(message);
+  assertExists(secondMessage);
+  // Delay the execution by to allow MESSAGE_CREATE event to be processed
+  await delayUntil(10000, () => bot.cache.messages.has(message.id) && bot.cache.messages.has(secondMessage.id));
+  // Make sure the message was created.
+  if (!bot.cache.messages.has(message.id) || !bot.cache.messages.has(secondMessage.id)) {
+    throw new Error(`The message seemed to be sent but it was not cached. Reason: ${reason}`);
+  }
+
+  // Delete the message now
+  await bot.helpers.deleteMessages(channelId, [message.id, secondMessage.id], reason);
+
+  // Wait to give it time for MESSAGE_DELETE event
+  await delayUntil(10000, () => !bot.cache.messages.has(message.id) && !bot.cache.messages.has(secondMessage.id));
+  // Make sure it is gone from cache
+  if (bot.cache.messages.has(message.id) || bot.cache.messages.has(secondMessage.id)) {
+    throw new Error("The messages should have been deleted but they are still in cache.");
+  }
+}
+
+export async function deleteMessagesWithoutReasonTest(bot: Bot, channelId: bigint, t: Deno.TestContext) {
+  await ifItFailsBlameWolf(bot, channelId);
+}
+
+export async function deleteMessagesWithReasonTest(bot: Bot, channelId: bigint, t: Deno.TestContext) {
+  await ifItFailsBlameWolf(bot, channelId, "with a reason");
+}