From a57b97285c3308fbdcc167ab3da9ae1dd78767b6 Mon Sep 17 00:00:00 2001
From: Ogulcan Celik <ogulcancelik@gmail.com>
Date: Mon, 23 Mar 2026 00:36:52 +0300
Subject: initial release

terminal workspace manager for AI coding agents.
single rust binary, runs inside your existing terminal.
workspaces, tiled panes, intelligent agent state detection.

https://herdr.dev
---
 tests/integration/ext/herdr-test.ts | 146 ++++++++++++++++++++++++++++++++++++
 1 file changed, 146 insertions(+)
 create mode 100644 tests/integration/ext/herdr-test.ts

(limited to 'tests/integration/ext')

diff --git a/tests/integration/ext/herdr-test.ts b/tests/integration/ext/herdr-test.ts
new file mode 100644
index 00000000..4b6c17d5
--- /dev/null
+++ b/tests/integration/ext/herdr-test.ts
@@ -0,0 +1,146 @@
+/**
+ * Minimal tmux extension for herdr integration testing.
+ *
+ * Two actions: send and read. No wait, no pane creation, no discovery loops.
+ * Talks directly to a pane tagged @pi_name=herdr.
+ */
+
+import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";
+import { StringEnum } from "@mariozechner/pi-ai";
+import { Text } from "@mariozechner/pi-tui";
+import { Type } from "@sinclair/typebox";
+
+function stripAnsi(text: string): string {
+	return text
+		.replace(/\x1b\].*?(?:\x07|\x1b\\)/g, "")
+		.replace(/\x1bPtmux;.*?\x1b\\/g, "")
+		.replace(/\x1b\[[0-9;]*[a-zA-Z]/g, "")
+		.replace(/\x1b[^[\]P]/g, "")
+		.replace(/\r/g, "");
+}
+
+export default function (pi: ExtensionAPI) {
+	let herdrPaneId: string | null = null;
+	let windowId: string | null = null;
+
+	pi.on("session_start", async () => {
+		if (!process.env.TMUX) return;
+
+		try {
+			const winResult = await pi.exec("tmux", [
+				"display-message", "-p", "-t", process.env.TMUX_PANE || "",
+				"#{window_id}",
+			]);
+			if (winResult.code === 0) windowId = winResult.stdout.trim();
+
+			if (windowId) {
+				const listResult = await pi.exec("tmux", [
+					"list-panes", "-t", windowId,
+					"-F", "#{pane_id}\t#{@pi_name}",
+				]);
+				if (listResult.code === 0) {
+					for (const line of listResult.stdout.trim().split("\n")) {
+						const [paneId, name] = line.split("\t");
+						if (name === "herdr") {
+							herdrPaneId = paneId;
+							break;
+						}
+					}
+				}
+			}
+		} catch {}
+	});
+
+	pi.registerTool({
+		name: "herdr",
+		label: "herdr",
+		description:
+			"Interact with the herdr instance under test. " +
+			"Actions: send (send keys or text to herdr), read (capture herdr screen).",
+		parameters: Type.Object({
+			action: StringEnum(["send", "read"] as const, {
+				description: "Action: send or read",
+			}),
+			keys: Type.Optional(
+				Type.String({
+					description:
+						"Keys to send, space-separated (for send). Examples: C-s, Enter, n, v, Escape",
+				}),
+			),
+			text: Type.Optional(
+				Type.String({ description: "Literal text to type (for send). Sent as-is." }),
+			),
+			lines: Type.Optional(
+				Type.Number({ description: "Scrollback lines to capture (for read, default: 50)" }),
+			),
+		}),
+
+		async execute(_toolCallId, params) {
+			if (!herdrPaneId) {
+				throw new Error("herdr pane not found. Is herdr running in this tmux window?");
+			}
+
+			switch (params.action) {
+				case "send": {
+					if (!params.keys && !params.text) {
+						throw new Error("send requires 'keys' or 'text'");
+					}
+					if (params.text) {
+						await pi.exec("tmux", [
+							"send-keys", "-l", "-t", herdrPaneId, params.text,
+						]);
+					}
+					if (params.keys) {
+						const keyArgs = params.keys.split(/\s+/).filter(Boolean);
+						await pi.exec("tmux", [
+							"send-keys", "-t", herdrPaneId, ...keyArgs,
+						]);
+					}
+					const desc = [
+						params.text && `"${params.text}"`,
+						params.keys,
+					].filter(Boolean).join(" + ");
+					return {
+						content: [{ type: "text", text: `Sent: ${desc}` }],
+					};
+				}
+
+				case "read": {
+					const lines = params.lines ?? 50;
+					const result = await pi.exec("tmux", [
+						"capture-pane", "-t", herdrPaneId, "-p", "-S", `-${lines}`,
+					]);
+					if (result.code !== 0) {
+						throw new Error(`capture-pane failed: ${result.stderr}`);
+					}
+					let output = stripAnsi(result.stdout);
+					output = output.replace(/\n+$/, "\n");
+					return {
+						content: [{ type: "text", text: output }],
+					};
+				}
+
+				default:
+					throw new Error(`Unknown action: ${params.action}`);
+			}
+		},
+
+		renderCall(args, theme) {
+			const action = args.action || "?";
+			let t = theme.fg("toolTitle", theme.bold("herdr "));
+			t += theme.fg("accent", action);
+			if (args.text) t += theme.fg("dim", ` "${args.text}"`);
+			if (args.keys) t += theme.fg("dim", ` ${args.keys}`);
+			return new Text(t, 0, 0);
+		},
+
+		renderResult(result, _opts, theme) {
+			const c = result.content?.[0];
+			const text = c?.type === "text" ? c.text : "";
+			if (text.length > 200) {
+				return new Text(theme.fg("dim", text.slice(0, 200) + "…"), 0, 0);
+			}
+			return new Text(theme.fg("dim", text), 0, 0);
+		},
+	});
+}
-- 
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