golang.org/x/net v0.51.0: atom.Input

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/net/html/atom.Input in pkg:golang/golang.org/x/net@v0.51.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/golang.org/x/net@v0.51.0
Demonstrate these symbols/APIs:
  - golang.org/x/net/html/atom.Input

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:f045739aa6b827b79cb1b0bdd283acfdcd47b5a91ccda0b0fad571b7677eebf8","contract":["atom.Input is a non-zero Atom constant representing the \"input\" HTML tag","atom.Input.String returns \"input\"","atom.Lookup with byte slice \"input\" returns atom.Input","atom.Lookup is case-sensitive and returns 0 for uppercase \"INPUT\"","atom.String with byte slice \"input\" returns string \"input\"","atom.Input is distinct from other HTML tag atoms including atom.Form and atom.Button"],"goal":"verify golang.org/x/net/html/atom.Input in pkg:golang/golang.org/x/net@v0.51.0","kind":"HOW","packages":["pkg:golang/golang.org/x/net@v0.51.0"],"schemaVersion":1,"symbols":["golang.org/x/net/html/atom.Input"]},"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/net@v0.51.0"],"schemaVersion":1,"subject":"pkg:golang/golang.org/x/net@v0.51.0","symbols":["golang.org/x/net/html/atom.Input"],"verifierAdapter":"golang@1"}

module example.com/sample

go 1.26.6

require golang.org/x/net v0.51.0

golang.org/x/net v0.51.0 h1:94R/GTO7mt3/4wIKpcR5gkGmRLOuE/2hNGeWq/GBIFo=
golang.org/x/net v0.51.0/go.mod h1:aamm+2QF5ogm02fjy5Bb7CQ0WMt1/WVM7FtyaTLlA9Y=

package main

import (
	"fmt"

	"golang.org/x/net/html/atom"
)

func main() {
	// atom.Input represents the HTML "input" element tag
	inp := atom.Input
	fmt.Printf("Atom: %s (value: 0x%x)\n", inp.String(), uint32(inp))

	// Lookup returns the atom corresponding to the given byte slice
	lookedUp := atom.Lookup([]byte("input"))
	fmt.Printf("Lookup(\"input\") == atom.Input: %t\n", lookedUp == inp)

	// String returns the canonical string name
	str := atom.String([]byte("input"))
	fmt.Printf("String(\"input\"): %s\n", str)
}

{
  "schemaVersion": 1,
  "goal": "verify golang.org/x/net/html/atom.Input in pkg:golang/golang.org/x/net@v0.51.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/golang.org/x/net@v0.51.0"
  ],
  "symbols": [
    "golang.org/x/net/html/atom.Input"
  ]
}

package main

import (
	"fmt"
	"os"

	"golang.org/x/net/html/atom"
)

func main() {
	if err := runContractTests(); err != nil {
		fmt.Fprintf(os.Stderr, "Contract test failed: %v\n", err)
		os.Exit(1)
	}
	fmt.Println("All contract assertions passed.")
}

func runContractTests() error {
	// 1. atom.Input is a non-zero Atom constant representing the "input" HTML tag
	if atom.Input == 0 {
		return fmt.Errorf("expected atom.Input to be non-zero, got 0")
	}

	// 2. atom.Input.String returns "input"
	if atom.Input.String() != "input" {
		return fmt.Errorf("expected atom.Input.String() to equal %q, got %q", "input", atom.Input.String())
	}

	// 3. atom.Lookup with byte slice "input" returns atom.Input
	if got := atom.Lookup([]byte("input")); got != atom.Input {
		return fmt.Errorf("expected atom.Lookup([]byte(\"input\")) to equal atom.Input, got %v", got)
	}

	// 4. atom.Lookup is case-sensitive and returns 0 for uppercase "INPUT"
	if got := atom.Lookup([]byte("INPUT")); got != 0 {
		return fmt.Errorf("expected atom.Lookup([]byte(\"INPUT\")) to return 0, got %v", got)
	}

	// 5. atom.String with byte slice "input" returns string "input"
	if got := atom.String([]byte("input")); got != "input" {
		return fmt.Errorf("expected atom.String([]byte(\"input\")) to equal %q, got %q", "input", got)
	}

	// 6. atom.Input is distinct from other HTML tag atoms including atom.Form and atom.Button
	if atom.Input == atom.Form {
		return fmt.Errorf("expected atom.Input != atom.Form")
	}
	if atom.Input == atom.Button {
		return fmt.Errorf("expected atom.Input != atom.Button")
	}

	return nil
}