tests: add channels types (#840)

tests/channels/get_pins.ts

@@ -0,0 +1,45 @@
+import { cache } from "../../src/cache.ts";
+import { createChannel } from "../../src/helpers/channels/create_channel.ts";
+import { defaultTestOptions, tempData } from "../ws/start_bot.ts";
+import { delayUntil } from "../util/delay_until.ts";
+import {assertEquals, assertExists} from "../deps.ts";
+import {getChannels} from "../../src/helpers/channels/get_channels.ts";
+import {sendMessage} from "../../src/helpers/messages/send_message.ts";
+import {getPins} from "../../src/helpers/channels/get_pins.ts";
+import {DiscordenoMessage} from "../../src/structures/message.ts";
+
+Deno.test({
+  name: "[channel] get pins.",
+  async fn() {
+    const channel = await createChannel(tempData.guildId, {
+      name: 'pins-channel'
+    });
+
+    // Assertions
+    assertExists(channel);
+
+    // 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.");
+    }
+
+    const message = await sendMessage(tempData.channelId, "Hello World!");
+    const secondMessage = await sendMessage(tempData.channelId, "Goodbye World!");
+
+    // Delay the execution by 5 seconds to allow MESSAGE_CREATE event to be processed
+    await delayUntil(10000, () => cache.messages.has(message.id) && cache.messages.has(secondMessage.id));
+
+    await message.pin();
+    await secondMessage.pin();
+
+    const pins = await getPins(tempData.channelId);
+
+    assertEquals(
+        pins.length,
+        2,
+    );
+  },
+  ...defaultTestOptions,
+});