github.com/sirupsen/logrus v1.10.2: ParseLevel

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/sirupsen/logrus.ParseLevel in pkg:golang/github.com/sirupsen/logrus@v1.10.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/sirupsen/logrus@v1.10.2
Demonstrate these symbols/APIs:
  - github.com/sirupsen/logrus.ParseLevel

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:sha256:8ddbb86cf2e92cf23d2c5349e34684e71c84a4aed4daad339f0a1260519b5b27","contract":["logrus.ParseLevel parses valid level name strings into their corresponding logrus.Level constants","logrus.ParseLevel parses level strings case-insensitively","logrus.ParseLevel accepts both warn and warning to produce WarnLevel","logrus.ParseLevel returns an error when given an invalid or empty level string"],"goal":"verify github.com/sirupsen/logrus.ParseLevel in pkg:golang/github.com/sirupsen/logrus@v1.10.2","kind":"HOW","packages":["pkg:golang/github.com/sirupsen/logrus@v1.10.2"],"schemaVersion":1,"symbols":["github.com/sirupsen/logrus.ParseLevel"]},"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/sirupsen/logrus@v1.10.2"],"schemaVersion":1,"subject":"pkg:golang/github.com/sirupsen/logrus@v1.10.2","symbols":["github.com/sirupsen/logrus.ParseLevel"],"verifierAdapter":"golang@1"}

module sample

go 1.26.6

require github.com/sirupsen/logrus v1.10.2

require golang.org/x/sys v0.13.0 // indirect

github.com/sirupsen/logrus v1.10.2 h1:G2SED73/qrAu6YwbdxOD6peLkCBI3z7L+ykJFTXJBBo=
github.com/sirupsen/logrus v1.10.2/go.mod h1:SLEg8TqYulVKKfIGHldVp2K2aYz2DKSVBq4g/H5bR7Q=
github.com/stretchr/testify v1.12.1 h1:EuwCh5fleGS7H32xRwO3wRGT7DxrDhLAT6FF8MpWDWE=
github.com/stretchr/testify v1.12.1/go.mod h1:MDEgiDPPsNp5cuIrHPPCyornHKgEVbtFUmoNlxoYthg=
go.yaml.in/yaml/v3 v3.0.5 h1:N6y/pJk8buWs9NY5ERU2HSMfm+IuD/OtfdAnq6kESPw=
go.yaml.in/yaml/v3 v3.0.5/go.mod h1:HVTZu1O7/Vkt2N+BFy8Zza+lnLsABggaTM2ZpNIGuKg=
golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

package main

import (
	"fmt"

	"github.com/sirupsen/logrus"
)

func main() {
	lvl, err := logrus.ParseLevel("info")
	if err != nil {
		fmt.Printf("ParseLevel error: %v\n", err)
		return
	}
	fmt.Printf("Parsed level: %s (%d)\n", lvl, lvl)
}

{
  "schemaVersion": 1,
  "goal": "verify github.com/sirupsen/logrus.ParseLevel in pkg:golang/github.com/sirupsen/logrus@v1.10.2",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/sirupsen/logrus@v1.10.2"
  ],
  "symbols": [
    "github.com/sirupsen/logrus.ParseLevel"
  ]
}

package main

import (
	"fmt"
	"os"

	"github.com/sirupsen/logrus"
)

func main() {
	// Assertion 1: logrus.ParseLevel parses valid level name strings into their corresponding logrus.Level constants
	{
		tests := []struct {
			name     string
			expected logrus.Level
		}{
			{"panic", logrus.PanicLevel},
			{"fatal", logrus.FatalLevel},
			{"error", logrus.ErrorLevel},
			{"warn", logrus.WarnLevel},
			{"info", logrus.InfoLevel},
			{"debug", logrus.DebugLevel},
			{"trace", logrus.TraceLevel},
		}

		for _, tc := range tests {
			lvl, err := logrus.ParseLevel(tc.name)
			if err != nil {
				fmt.Fprintf(os.Stderr, "Assertion 1 failed for %q: unexpected error: %v\n", tc.name, err)
				os.Exit(1)
			}
			if lvl != tc.expected {
				fmt.Fprintf(os.Stderr, "Assertion 1 failed for %q: expected %v, got %v\n", tc.name, tc.expected, lvl)
				os.Exit(1)
			}
		}
	}

	// Assertion 2: logrus.ParseLevel parses level strings case-insensitively
	{
		caseTests := []struct {
			input    string
			expected logrus.Level
		}{
			{"INFO", logrus.InfoLevel},
			{"Info", logrus.InfoLevel},
			{"iNFo", logrus.InfoLevel},
			{"DEBUG", logrus.DebugLevel},
			{"Debug", logrus.DebugLevel},
			{"TRACE", logrus.TraceLevel},
		}

		for _, tc := range caseTests {
			lvl, err := logrus.ParseLevel(tc.input)
			if err != nil {
				fmt.Fprintf(os.Stderr, "Assertion 2 failed for %q: unexpected error: %v\n", tc.input, err)
				os.Exit(1)
			}
			if lvl != tc.expected {
				fmt.Fprintf(os.Stderr, "Assertion 2 failed for %q: expected %v, got %v\n", tc.input, tc.expected, lvl)
				os.Exit(1)
			}
		}
	}

	// Assertion 3: logrus.ParseLevel accepts both warn and warning to produce WarnLevel
	{
		warnTests := []string{"warn", "warning", "WARN", "WARNING", "Warning"}
		for _, input := range warnTests {
			lvl, err := logrus.ParseLevel(input)
			if err != nil {
				fmt.Fprintf(os.Stderr, "Assertion 3 failed for %q: unexpected error: %v\n", input, err)
				os.Exit(1)
			}
			if lvl != logrus.WarnLevel {
				fmt.Fprintf(os.Stderr, "Assertion 3 failed for %q: expected WarnLevel, got %v\n", input, lvl)
				os.Exit(1)
			}
		}
	}

	// Assertion 4: logrus.ParseLevel returns an error when given an invalid or empty level string
	{
		invalidInputs := []string{"", "invalid", "unknown", "verbose", "123", "info1"}
		for _, input := range invalidInputs {
			lvl, err := logrus.ParseLevel(input)
			if err == nil {
				fmt.Fprintf(os.Stderr, "Assertion 4 failed for %q: expected error, got level %v\n", input, lvl)
				os.Exit(1)
			}
		}
	}

	fmt.Println("PASS: all logrus.ParseLevel contract assertions passed")
}