golang.org/x/net v0.47.0: atom.P

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.P in pkg:golang/golang.org/x/net@v0.47.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/golang.org/x/net@v0.47.0
Demonstrate these symbols/APIs:
  - golang.org/x/net/html/atom.P

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 atompsample

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

// IsParagraphAtom returns true if the given atom is atom.P.
func IsParagraphAtom(a atom.Atom) bool {
	return a == atom.P
}

// ParagraphTagName returns the tag name string for atom.P.
func ParagraphTagName() string {
	return atom.P.String()
}

// LookupParagraph parses a byte slice to check if it matches atom.P.
func LookupParagraph(data []byte) (atom.Atom, bool) {
	a := atom.Lookup(data)
	return a, a == atom.P
}

{"case":{"caseId":"case:sha256:32a6decb93a48233f6b1ef0468e8f7e51fe76986ad28fa4aa2e0c6081718dfbb","contract":["atom.P represents the HTML paragraph tag atom with non-zero integer code and 'p' string representation","atom.Lookup maps lowercase byte slice 'p' to atom.P and distinguishes other tags or non-atom identifiers"],"goal":"verify golang.org/x/net/html/atom.P in pkg:golang/golang.org/x/net@v0.47.0","kind":"HOW","packages":["pkg:golang/golang.org/x/net@v0.47.0"],"schemaVersion":1,"symbols":["golang.org/x/net/html/atom.P"]},"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@v0.47.0"],"schemaVersion":1,"subject":"pkg:golang/golang.org/x/net@v0.47.0","symbols":["golang.org/x/net/html/atom.P"],"verifierAdapter":"golang@1"}

module example.com/atom-p-sample

go 1.26.0

require golang.org/x/net v0.47.0

golang.org/x/net v0.47.0 h1:Mx+4dIFzqraBXUugkia1OOvlD6LemFo1ALMHjrXDOhY=
golang.org/x/net v0.47.0/go.mod h1:/jNxtkgq5yWUGYkaZGqo27cfGZ1c5Nen03aYrrKpVRU=

{
  "schemaVersion": 1,
  "goal": "verify golang.org/x/net/html/atom.P in pkg:golang/golang.org/x/net@v0.47.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/golang.org/x/net@v0.47.0"
  ],
  "symbols": [
    "golang.org/x/net/html/atom.P"
  ]
}

package main

import (
	"fmt"
	"os"

	atompsample "example.com/atom-p-sample"
	"golang.org/x/net/html/atom"
)

func main() {
	// Verify atom.P is a non-zero HTML atom representing the 'p' tag
	if atom.P == 0 {
		fmt.Fprintf(os.Stderr, "FAIL: atom.P is zero\n")
		os.Exit(1)
	}

	if atom.P.String() != "p" {
		fmt.Fprintf(os.Stderr, "FAIL: atom.P.String() = %q, expected 'p'\n", atom.P.String())
		os.Exit(1)
	}

	// Verify atom.Lookup resolves []byte("p") to atom.P
	lookupResult := atom.Lookup([]byte("p"))
	if lookupResult != atom.P {
		fmt.Fprintf(os.Stderr, "FAIL: atom.Lookup([]byte(\"p\")) = %v, expected atom.P\n", lookupResult)
		os.Exit(1)
	}

	// Verify atom.Lookup does not match uppercase or unrelated tags
	if upperResult := atom.Lookup([]byte("P")); upperResult != 0 {
		fmt.Fprintf(os.Stderr, "FAIL: atom.Lookup([]byte(\"P\")) expected 0, got %v\n", upperResult)
		os.Exit(1)
	}

	// Verify atompsample helper functions
	if !atompsample.IsParagraphAtom(atom.P) {
		fmt.Fprintf(os.Stderr, "FAIL: IsParagraphAtom(atom.P) returned false\n")
		os.Exit(1)
	}

	if atompsample.ParagraphTagName() != "p" {
		fmt.Fprintf(os.Stderr, "FAIL: ParagraphTagName() = %q, expected 'p'\n", atompsample.ParagraphTagName())
		os.Exit(1)
	}

	resolvedAtom, isP := atompsample.LookupParagraph([]byte("p"))
	if resolvedAtom != atom.P || !isP {
		fmt.Fprintf(os.Stderr, "FAIL: LookupParagraph([]byte(\"p\")) returned (%v, %v)\n", resolvedAtom, isP)
		os.Exit(1)
	}

	fmt.Println("PASS")
}