Squashed 'third_party/pi/' content from commit d981de122

git-subtree-dir: third_party/pi
git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477

packages/coding-agent/test/custom-message.test.ts

@@ -0,0 +1,44 @@
+import { Text } from "@earendil-works/pi-tui";
+import { describe, expect, test } from "vitest";
+import type { MessageRenderer, MessageRenderOptions } from "../src/core/extensions/types.ts";
+import type { CustomMessage } from "../src/core/messages.ts";
+import { CustomMessageComponent } from "../src/modes/interactive/components/custom-message.ts";
+import { initTheme } from "../src/modes/interactive/theme/theme.ts";
+import { stripAnsi } from "../src/utils/ansi.ts";
+
+describe("CustomMessageComponent", () => {
+	test("provides output padding to custom renderers and updates it", () => {
+		initTheme("dark");
+		const optionsSeen: MessageRenderOptions[] = [];
+		const renderer: MessageRenderer = (_message, options) => {
+			optionsSeen.push(options);
+			return new Text("custom", options.outputPad, 0);
+		};
+		const message: CustomMessage = {
+			role: "custom",
+			customType: "test",
+			content: "custom",
+			display: true,
+			timestamp: Date.now(),
+		};
+		const component = new CustomMessageComponent(message, renderer, undefined, 1);
+
+		expect(optionsSeen).toEqual([{ expanded: false, outputPad: 1 }]);
+		expect(
+			component
+				.render(40)
+				.map(stripAnsi)
+				.some((line) => line.startsWith(" custom")),
+		).toBe(true);
+
+		component.setOutputPad(0);
+
+		expect(optionsSeen.at(-1)).toEqual({ expanded: false, outputPad: 0 });
+		expect(
+			component
+				.render(40)
+				.map(stripAnsi)
+				.some((line) => line.startsWith("custom")),
+		).toBe(true);
+	});
+});