Follow snake_case convention

tests/helpers/emojis/create_emoji.ts

@@ -0,0 +1,21 @@
+import { Bot } from "../../../src/bot.ts";
+import { assertExists } from "../../deps.ts";
+import { delayUntil } from "../../utils.ts";
+
+export async function createEmojiTest(bot: Bot, guildId: bigint, t: Deno.TestContext) {
+  const emoji = await bot.helpers.createEmoji(guildId, {
+    name: "blamewolf",
+    image: "https://cdn.discordapp.com/emojis/814955268123000832.png",
+    roles: [],
+  });
+
+  // Assertions
+  assertExists(emoji);
+
+  // Delay the execution to allow event to be processed
+  await delayUntil(10000, async () => (await bot.cache.guilds.get(guildId))?.emojis?.has(emoji.id));
+
+  if (!(await bot.cache.guilds.get(guildId))?.emojis?.has(emoji.id)) {
+    throw new Error("The emoji seemed to be created but it was not cached.");
+  }
+}