test(tmux-subagent): add manager project-directory resolution tests

src/features/tmux-subagent/manager-project-directory.test.ts

@@ -0,0 +1,65 @@
+/// <reference path="../../../bun-test.d.ts" />
+import { describe, expect, it, mock } from "bun:test"
+import type { PluginInput } from "@opencode-ai/plugin"
+
+import type { TmuxConfig } from "../../config/schema"
+import { TmuxSessionManager, type TmuxUtilDeps } from "./manager"
+
+const tmuxConfig = {
+	enabled: true,
+	isolation: "inline",
+	layout: "main-vertical",
+	main_pane_size: 60,
+	main_pane_min_width: 80,
+	agent_pane_min_width: 40,
+} satisfies TmuxConfig
+
+const tmuxDeps: TmuxUtilDeps = {
+	isInsideTmux: () => true,
+	getCurrentPaneId: () => "%0",
+	queryWindowState: mock(async () => null),
+}
+
+function createPluginInput(directory: string): PluginInput {
+	let shell: PluginInput["$"]
+	shell = Object.assign(
+		() => {
+			throw new Error("shell should not be used in this test")
+		},
+		{
+			braces: (): string[] => [],
+			escape: (input: string): string => input,
+			env: (): PluginInput["$"] => shell,
+			cwd: (): PluginInput["$"] => shell,
+			nothrow: (): PluginInput["$"] => shell,
+			throws: (): PluginInput["$"] => shell,
+		},
+	)
+
+	return {
+		client: Object.assign({} as PluginInput["client"], {
+			session: {
+				status: mock(async () => ({ data: {} })),
+				messages: mock(async () => ({ data: [] })),
+			},
+		}),
+		project: {} as PluginInput["project"],
+		directory,
+		worktree: process.cwd(),
+		serverUrl: new URL("http://localhost:4096"),
+		$: shell,
+	}
+}
+
+describe("TmuxSessionManager projectDirectory", () => {
+	it("#given empty ctx.directory #when manager is constructed #then it falls back to process.cwd()", () => {
+		// given
+		const ctx = createPluginInput("")
+
+		// when
+		const manager = new TmuxSessionManager(ctx, tmuxConfig, tmuxDeps)
+
+		// then
+		expect(Reflect.get(manager, "projectDirectory")).toBe(process.cwd())
+	})
+})