delete channel tests Closes #1192

tests/helpers/channels/deleteChannel.ts

@@ -0,0 +1,24 @@
+import { Bot } from "../../../src/bot.ts";
+import { delayUntil } from "../../utils.ts";
+
+export async function deleteChannelTests(bot: Bot, guildId: bigint, options: { reason?: string }, t: Deno.TestContext) {
+  // Create the necessary channels
+  const channel = await bot.helpers.createChannel(guildId, {
+    name: "delete-channel",
+  });
+
+  await delayUntil(10000, () => bot.cache.channels.has(channel.id));
+  // Make sure the channel was created.
+  if (!bot.cache.channels.has(channel.id)) {
+    throw new Error("The channel should have been created but it is not in the cache.");
+  }
+
+  // Delete the channel now without a reason
+  await bot.helpers.deleteChannel(channel.id, options.reason);
+  // wait 5 seconds to give it time for CHANNEL_DELETE event
+  await delayUntil(10000, () => !bot.cache.channels.has(channel.id));
+  // Make sure it is gone from cache
+  if (bot.cache.channels.has(channel.id)) {
+    throw new Error("The channel should have been deleted but it is still in cache.");
+  }
+}