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+import { spawn } from 'node:child_process'
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+import { existsSync } from 'node:fs'
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+import { join } from 'node:path'
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+import { fileURLToPath } from 'node:url'
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+import { describe, expect, it } from 'vitest'
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+
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+/**
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+ * Published-entry smoke for the `dsh` bin: run the built `lib/bin.js` under
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+ * plain Node (no tsx) with PIPED stdio and assert the TUI refuses to boot.
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+ * `dsh` is the sole terminal front door; the TUI owns no non-TTY fallback, so a
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+ * piped launch must exit nonzero with a stderr pointer at the one-shot `-p`
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+ * mode. The guard fires inside `runTui` BEFORE the Loader resolves the config
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+ * tree — a compose-time throw inside the tree is logged per-entry, not
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+ * rethrown, so without this guard a piped launch would settle into an idle
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+ * UI-less process. The bin resolves its workspace deps through the repo's
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+ * node_modules, so no external consumer is assembled; missing-config fail-loud
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+ * and full-boot coverage for the shared dsh-app-boot glue live in cli-demo's
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+ * built-bin suite, and interactive TTY behavior is PTY-covered by
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+ * examples/tui-agent. Skips before the bin is built.
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+ */
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+
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+const repoRoot = fileURLToPath(new URL('../../../', import.meta.url))
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+const dshBin = join(repoRoot, 'apps/cli/lib/bin.js')
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+
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+/** Run the built bin with PIPED stdio; resolve with output + exit code. */
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+function runBuiltBin(): Promise<{ stdout: string; code: number; stderr: string }> {
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+ return new Promise((resolve, reject) => {
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+ const child = spawn(process.execPath, [dshBin], { stdio: ['pipe', 'pipe', 'pipe'] })
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+ let stdout = ''
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+ let stderr = ''
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+ child.stdout.setEncoding('utf8')
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+ child.stdout.on('data', (c: string) => { stdout += c })
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+ child.stderr.setEncoding('utf8')
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+ child.stderr.on('data', (c: string) => { stderr += c })
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+ const timer = setTimeout(() => {
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+ child.kill('SIGKILL')
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+ reject(new Error(`dsh built bin did not exit within 25s. stdout:\n${stdout}\nstderr:\n${stderr}`))
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+ }, 25_000)
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+ child.on('exit', (code) => { clearTimeout(timer); resolve({ stdout, code: code ?? -1, stderr }) })
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+ child.on('error', (err) => { clearTimeout(timer); reject(err) })
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+ child.stdin.end()
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+ })
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+}
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+
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+describe.skipIf(!existsSync(dshBin))('dsh BUILT bin (node lib/bin.js, no tsx)', () => {
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+ it('refuses pipes LOUD (non-zero exit + stderr) before booting the Loader', async () => {
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+ const { stdout, code, stderr } = await runBuiltBin()
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+ expect(code).not.toBe(0)
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+ expect(stderr).toContain('requires stdin and stdout to be interactive TTYs')
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+ expect(stderr).toContain('dsh -p')
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+ // The refusal happens before any plugin mounts: stdout stays silent.
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+ expect(stdout).toBe('')
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+ }, 30_000)
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+})
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Turtle