tests: add deleting channel overwrites test (#828)

tests/channels/delete_channel_overwrite.ts

@@ -0,0 +1,62 @@
+import { defaultTestOptions, tempData } from "../ws/start_bot.ts";
+import { assertEquals, assertExists } from "../deps.ts";
+import { cache } from "../../src/cache.ts";
+import { DiscordChannelTypes } from "../../src/types/channels/channel_types.ts";
+import { CreateGuildChannel } from "../../src/types/guilds/create_guild_channel.ts";
+import { createChannel } from "../../src/helpers/channels/create_channel.ts";
+import { delayUntil } from "../util/delay_until.ts";
+import { DiscordOverwriteTypes } from "../../src/types/channels/overwrite_types.ts"
+import { botId } from "../../src/bot.ts";
+import { deleteChannelOverwrite } from "../../src/helpers/channels/delete_channel_overwrite.ts";
+
+async function ifItFailsBlameWolf(options: CreateGuildChannel, save = false) {
+  const channel = await createChannel(tempData.guildId, options);
+
+  // Assertions
+  assertExists(channel);
+  assertEquals(channel.type, options.type || DiscordChannelTypes.GUILD_TEXT);
+
+  // Delay the execution by 5 seconds to allow CHANNEL_CREATE event to be processed
+  await delayUntil(10000, () => cache.channels.has(channel.id));
+
+  if (!cache.channels.has(channel.id)) {
+    throw new Error("The channel seemed to be created but it was not cached.");
+  }
+
+  if (options.permissionOverwrites && channel.permissionOverwrites.length !== options.permissionOverwrites.length) {
+    throw new Error(
+      "The channel was supposed to have a permissionOverwrites but it does not appear to be the same permissionOverwrites."
+    );
+  }
+
+  await deleteChannelOverwrite(channel.guildId, channel.id, botId);
+
+  await delayUntil(10000, () => cache.channels.get(channel.id)?.permissionOverwrites?.length === 0);
+
+  if (cache.channels.get(channel.id)?.permissionOverwrites?.length !== 0) {
+    throw new Error(
+      "The channel permission overwrite was supposed to be deleted but it does not appear to be."
+    );
+  }
+}
+
+Deno.test({
+  name: "[channel] create a new text channel with permission overwrites",
+  async fn() {
+    await ifItFailsBlameWolf(
+      {
+        name: "Discordeno-test",
+        permissionOverwrites: [
+          {
+            id: botId,
+            type: DiscordOverwriteTypes.MEMBER,
+            allow: ["VIEW_CHANNEL"],
+            deny: [],
+          },
+        ],
+      },
+      true
+    );
+  },
+  ...defaultTestOptions,
+});