golang.org/x/term v0.0.0-20210927222741-03fcf44c2211: 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 term.IsTerminal in pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211
Demonstrate these symbols/APIs:
  - 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.

package sample_test

import (
	"os"
	"testing"

	"golang.org/x/term"
)

func TestIsTerminal(t *testing.T) {
	// 1. Invalid file descriptor returns false
	if term.IsTerminal(-1) {
		t.Fatal("expected IsTerminal(-1) to be false")
	}

	// 2. Non-terminal pipe file descriptors return false
	r, w, err := os.Pipe()
	if err != nil {
		t.Fatalf("failed to create pipe: %v", err)
	}
	defer r.Close()
	defer w.Close()

	if term.IsTerminal(int(r.Fd())) {
		t.Fatal("expected pipe reader to not be a terminal")
	}
	if term.IsTerminal(int(w.Fd())) {
		t.Fatal("expected pipe writer to not be a terminal")
	}

	// 3. Regular file descriptor is not a terminal
	tmpFile, err := os.CreateTemp("", "test_term_*.txt")
	if err != nil {
		t.Fatalf("failed to create temp file: %v", err)
	}
	defer os.Remove(tmpFile.Name())
	defer tmpFile.Close()

	if term.IsTerminal(int(tmpFile.Fd())) {
		t.Fatal("expected regular temp file to not be a terminal")
	}
}

{"case":{"caseId":"case:sha256:cfbe32557c7e41b1c6bfea964b3f4697d29b1320e377d9a55502164884bcfc6f","contract":["term.IsTerminal reports whether the given file descriptor is a terminal"],"goal":"verify term.IsTerminal in pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211","kind":"HOW","packages":["pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211"],"schemaVersion":1,"symbols":["term.IsTerminal"]},"contractCommand":["go","test","-v","./..."],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","language":"go","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","packageManagerVersion":"1.26.6","runtime":"go","runtimeVersion":"1.26.6","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211"],"schemaVersion":1,"subject":"pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211","symbols":["term.IsTerminal"],"verifierAdapter":"golang@1"}

module sample

go 1.26

require golang.org/x/term v0.0.0-20210927222741-03fcf44c2211

require golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 // indirect

golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1 h1:SrN+KX8Art/Sf4HNj6Zcz06G7VEz+7w9tdXTPOZ7+l4=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=

{
  "schemaVersion": 1,
  "goal": "verify term.IsTerminal in pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211",
  "kind": "HOW",
  "packages": [
    "pkg:golang/golang.org/x/term@v0.0.0-20210927222741-03fcf44c2211"
  ],
  "symbols": [
    "term.IsTerminal"
  ]
}