golang.org/x/term v0.2.0: IsTerminal

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify golang.org/x/term.IsTerminal in pkg:golang/golang.org/x/term@v0.2.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/golang.org/x/term@v0.2.0
Demonstrate these symbols/APIs:
  - golang.org/x/term.IsTerminal

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:68cfc18fb085417f118f87254ab5d62df9df5a7ff7a147313728e17f201b951f","contract":["term.IsTerminal returns false for a non-terminal file descriptor such as an os.Pipe endpoint or an invalid negative descriptor"],"goal":"verify golang.org/x/term.IsTerminal in pkg:golang/golang.org/x/term@v0.2.0","kind":"HOW","packages":["pkg:golang/golang.org/x/term@v0.2.0"],"schemaVersion":1,"symbols":["golang.org/x/term.IsTerminal"]},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/golang.org/x/term@v0.2.0"],"schemaVersion":1,"subject":"pkg:golang/golang.org/x/term@v0.2.0","symbols":["golang.org/x/term.IsTerminal"],"verifierAdapter":"golang@1"}

module sample

go 1.21

require golang.org/x/term v0.2.0

require golang.org/x/sys v0.2.0 // indirect

golang.org/x/sys v0.2.0 h1:ljd4t30dBnAvMZaQCevtY0xLLD0A+bRZXbgLMLU1F/A=
golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.2.0 h1:z85xZCsEl7bi/KwbNADeBYoOP0++7W1ipu+aGnpwzRM=
golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=

{
  "schemaVersion": 1,
  "goal": "verify golang.org/x/term.IsTerminal in pkg:golang/golang.org/x/term@v0.2.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/golang.org/x/term@v0.2.0"
  ],
  "symbols": [
    "golang.org/x/term.IsTerminal"
  ]
}

package main

import (
	"fmt"
	"os"

	"golang.org/x/term"
)

func main() {
	r, w, err := os.Pipe()
	if err != nil {
		panic(err)
	}
	defer r.Close()
	defer w.Close()

	if term.IsTerminal(int(r.Fd())) {
		panic("expected pipe read fd to not be a terminal")
	}
	if term.IsTerminal(-1) {
		panic("expected negative fd to not be a terminal")
	}
	fmt.Println("ok")
}