github.com/Masterminds/goutils v1.1.1: Initials

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 github.com/Masterminds/goutils.Initials in pkg:golang/github.com/Masterminds/goutils@v1.1.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/Masterminds/goutils@v1.1.1
Demonstrate these symbols/APIs:
  - github.com/Masterminds/goutils.Initials

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:fa65080f922d795c4eaacd4fc490349fa67ebec92380f8bfc1a80cd4ed138901","contract":["goutils.Initials extracts the initial letters from each whitespace-separated word in a string","goutils.Initials accepts custom delimiter runes to separate words and extract initials","goutils.Initials returns an empty string when given an empty string or a whitespace-only string"],"goal":"verify github.com/Masterminds/goutils.Initials in pkg:golang/github.com/Masterminds/goutils@v1.1.1","kind":"HOW","packages":["pkg:golang/github.com/Masterminds/goutils@v1.1.1"],"schemaVersion":1,"symbols":["github.com/Masterminds/goutils.Initials"]},"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/github.com/Masterminds/goutils@v1.1.1"],"schemaVersion":1,"subject":"pkg:golang/github.com/Masterminds/goutils@v1.1.1","symbols":["github.com/Masterminds/goutils.Initials"],"verifierAdapter":"golang@1"}

module example.com/sample

go 1.26.6

require github.com/Masterminds/goutils v1.1.1

github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=

package main

import (
	"fmt"

	"github.com/Masterminds/goutils"
)

func main() {
	input := "Quick Brown Fox"
	initials := goutils.Initials(input)
	fmt.Printf("Input: %s\n", input)
	fmt.Printf("Initials: %s\n", initials)

	custom := "item_category_tag"
	customInitials := goutils.Initials(custom, '_')
	fmt.Printf("Custom: %s\n", custom)
	fmt.Printf("Custom Initials: %s\n", customInitials)
}

{
  "schemaVersion": 1,
  "goal": "verify github.com/Masterminds/goutils.Initials in pkg:golang/github.com/Masterminds/goutils@v1.1.1",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/Masterminds/goutils@v1.1.1"
  ],
  "symbols": [
    "github.com/Masterminds/goutils.Initials"
  ]
}

package main

import (
	"fmt"
	"os"

	"github.com/Masterminds/goutils"
)

func main() {
	// Assertion 1: goutils.Initials extracts the initial letters from each whitespace-separated word in a string
	got1 := goutils.Initials("Quick Brown Fox")
	expected1 := "QBF"
	if got1 != expected1 {
		fmt.Fprintf(os.Stderr, "assertion 1 failed: expected %q, got %q\n", expected1, got1)
		os.Exit(1)
	}

	got1b := goutils.Initials("Alpha Beta Gamma")
	expected1b := "ABG"
	if got1b != expected1b {
		fmt.Fprintf(os.Stderr, "assertion 1b failed: expected %q, got %q\n", expected1b, got1b)
		os.Exit(1)
	}

	// Assertion 2: goutils.Initials accepts custom delimiter runes to separate words and extract initials
	got2 := goutils.Initials("foo-bar_baz", '-', '_')
	expected2 := "fbb"
	if got2 != expected2 {
		fmt.Fprintf(os.Stderr, "assertion 2 failed: expected %q, got %q\n", expected2, got2)
		os.Exit(1)
	}

	// Assertion 3: goutils.Initials returns an empty string when given an empty string or a whitespace-only string
	if got := goutils.Initials(""); got != "" {
		fmt.Fprintf(os.Stderr, "assertion 3 failed for empty string: expected %q, got %q\n", "", got)
		os.Exit(1)
	}
	if got := goutils.Initials("   \t\r\n  "); got != "" {
		fmt.Fprintf(os.Stderr, "assertion 3 failed for whitespace string: expected %q, got %q\n", "", got)
		os.Exit(1)
	}

	fmt.Println("All contract assertions passed.")
}