github.com/spf13/cast v1.4.1: ToBool

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/spf13/cast.ToBool in pkg:golang/github.com/spf13/cast@v1.4.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/spf13/cast@v1.4.1
Demonstrate these symbols/APIs:
  - github.com/spf13/cast.ToBool

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

import (
	"github.com/spf13/cast"
)

// ToBool converts the given value to a boolean using cast.ToBool.
func ToBool(val any) bool {
	return cast.ToBool(val)
}

package sample

import (
	"testing"

	"github.com/spf13/cast"
)

func TestToBoolDirect(t *testing.T) {
	tests := []struct {
		input    any
		expected bool
	}{
		{true, true},
		{false, false},
		{1, true},
		{0, false},
		{"true", true},
		{"TRUE", true},
		{"t", true},
		{"T", true},
		{"1", true},
		{"false", false},
		{"FALSE", false},
		{"f", false},
		{"F", false},
		{"0", false},
		{nil, false},
		{"invalid", false},
	}

	for _, tt := range tests {
		got := cast.ToBool(tt.input)
		if got != tt.expected {
			t.Errorf("cast.ToBool(%v) = %v; want %v", tt.input, got, tt.expected)
		}
	}
}

func TestToBoolHelper(t *testing.T) {
	if !ToBool("true") {
		t.Errorf("ToBool(\"true\") = false; want true")
	}
	if ToBool("false") {
		t.Errorf("ToBool(\"false\") = true; want false")
	}
	if !ToBool(1) {
		t.Errorf("ToBool(1) = false; want true")
	}
	if ToBool(0) {
		t.Errorf("ToBool(0) = true; want false")
	}
}

{"case":{"caseId":"case:sha256:9050185fd3a32cec2848fd1c1a295e20c7cce3e2134ada7b8d831b16a9c8c048","contract":["cast.ToBool converts truthy and falsy values of various types to boolean","ToBool converts the given value to a boolean using cast.ToBool"],"goal":"verify github.com/spf13/cast.ToBool in pkg:golang/github.com/spf13/cast@v1.4.1","kind":"HOW","packages":["pkg:golang/github.com/spf13/cast@v1.4.1"],"schemaVersion":1,"symbols":["github.com/spf13/cast.ToBool"]},"contractCommand":["go","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/spf13/cast@v1.4.1"],"schemaVersion":1,"subject":"pkg:golang/github.com/spf13/cast@v1.4.1","symbols":["github.com/spf13/cast.ToBool"],"verifierAdapter":"golang@1"}

module sample

go 1.26.6

require github.com/spf13/cast v1.4.1

github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/spf13/cast v1.4.1 h1:s0hze+J0196ZfEMTs80N7UlFt0BDuQ7Q+JDnHiMWKdA=
github.com/spf13/cast v1.4.1/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=

{
  "schemaVersion": 1,
  "goal": "verify github.com/spf13/cast.ToBool in pkg:golang/github.com/spf13/cast@v1.4.1",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/spf13/cast@v1.4.1"
  ],
  "symbols": [
    "github.com/spf13/cast.ToBool"
  ]
}