DEV: Move discourse-chat to the core repo. (#18776)

As part of this move, we are also renaming `discourse-chat` to `chat`.

plugins/chat/test/javascripts/components/chat-emoji-avatar-test.js

@@ -0,0 +1,26 @@
+import componentTest, {
+  setupRenderingTest,
+} from "discourse/tests/helpers/component-test";
+import { exists } from "discourse/tests/helpers/qunit-helpers";
+import hbs from "htmlbars-inline-precompile";
+import { module } from "qunit";
+
+module("Discourse Chat | Component | chat-emoji-avatar", function (hooks) {
+  setupRenderingTest(hooks);
+
+  componentTest("uses an emoji as avatar", {
+    template: hbs`{{chat-emoji-avatar emoji=emoji}}`,
+
+    async beforeEach() {
+      this.set("emoji", ":otter:");
+    },
+
+    async test(assert) {
+      assert.ok(
+        exists(
+          `.chat-emoji-avatar .chat-emoji-avatar-container .emoji[title=otter]`
+        )
+      );
+    },
+  });
+});