tests: add all messages tests

tests/messages/pin_message.ts

@@ -0,0 +1,48 @@
+import { cache, delay, getPins, pin, sendMessage } from "../../mod.ts";
+import { defaultTestOptions, tempData } from "../ws/start_bot.ts";
+import { assertEquals, assertExists } from "../deps.ts";
+import { DiscordenoMessage } from "../../src/structures/message.ts";
+
+async function ifItFailsBlameWolf(type: "getter" | "raw") {
+  const message = await sendMessage(tempData.channelId, "Hello World!");
+
+  // Assertions
+  assertExists(message);
+
+  // Delay the execution by 5 seconds to allow MESSAGE_CREATE event to be processed
+  await delay(5000);
+
+  if (!cache.messages.has(message.id)) {
+    throw new Error(
+      "The message seemed to be sent but it was not cached.",
+    );
+  }
+
+  if (type === "raw") {
+    await pin(message.channelId, message.id);
+  } else {
+    await message.pin();
+  }
+
+  const pins = await getPins(tempData.channelId);
+  assertEquals(
+    pins.filter((msg: DiscordenoMessage) => msg.id === message.id).length,
+    1,
+  );
+}
+
+Deno.test({
+  name: "[message] pin a message",
+  async fn() {
+    await ifItFailsBlameWolf("raw");
+  },
+  ...defaultTestOptions,
+});
+
+Deno.test({
+  name: "[message] message.pin()",
+  async fn() {
+    await ifItFailsBlameWolf("getter");
+  },
+  ...defaultTestOptions,
+});