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

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.DebugLevel 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.DebugLevel

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:sha256:1e5d5ad9f49b7680d61ef3c65ee53602611d92f62a97b82b9fc787ffa2c59630","contract":["logrus.DebugLevel is a Level constant with value 5 representing debug level logging","logrus.DebugLevel String method returns string representation \"debug\"","logrus.ParseLevel parses lowercase and uppercase debug strings to logrus.DebugLevel","logrus.DebugLevel MarshalText marshals to byte slice \"debug\" and UnmarshalText unmarshals \"debug\" into Level","Logger configured with logrus.DebugLevel enables DebugLevel and higher severity levels while disabling TraceLevel","Logger configured with logrus.DebugLevel outputs log messages at DebugLevel and filters them when level is higher than DebugLevel"],"goal":"verify github.com/sirupsen/logrus.DebugLevel 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.DebugLevel"]},"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.DebugLevel"],"verifierAdapter":"golang@1"}

module example.com/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 (
	"os"

	"github.com/sirupsen/logrus"
)

func main() {
	logger := logrus.New()
	logger.SetOutput(os.Stdout)
	logger.SetLevel(logrus.DebugLevel)

	logger.Infof("Current log level: %s", logger.GetLevel())
	logger.Debug("This is a debug message enabled by logrus.DebugLevel")
	logger.Trace("This trace message will not be logged because level is DebugLevel")
}

{
  "schemaVersion": 1,
  "goal": "verify github.com/sirupsen/logrus.DebugLevel 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.DebugLevel"
  ]
}

package main

import (
	"bytes"
	"fmt"
	"os"
	"strings"

	"github.com/sirupsen/logrus"
)

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

func runTests() error {
	// 1. logrus.DebugLevel is a Level constant with value 5 representing debug level logging
	if logrus.DebugLevel != 5 {
		return fmt.Errorf("expected logrus.DebugLevel to have value 5, got %d", logrus.DebugLevel)
	}

	// 2. logrus.DebugLevel String method returns string representation "debug"
	if str := logrus.DebugLevel.String(); str != "debug" {
		return fmt.Errorf("expected logrus.DebugLevel.String() to be %q, got %q", "debug", str)
	}

	// 3. logrus.ParseLevel parses lowercase and uppercase debug strings to logrus.DebugLevel
	for _, s := range []string{"debug", "DEBUG", "Debug"} {
		lvl, err := logrus.ParseLevel(s)
		if err != nil {
			return fmt.Errorf("failed to parse level %q: %w", s, err)
		}
		if lvl != logrus.DebugLevel {
			return fmt.Errorf("expected %q to parse to DebugLevel (%d), got %d", s, logrus.DebugLevel, lvl)
		}
	}

	// 4. logrus.DebugLevel MarshalText marshals to byte slice "debug" and UnmarshalText unmarshals "debug" into Level
	data, err := logrus.DebugLevel.MarshalText()
	if err != nil {
		return fmt.Errorf("failed to marshal DebugLevel: %w", err)
	}
	if string(data) != "debug" {
		return fmt.Errorf("expected MarshalText to return %q, got %q", "debug", string(data))
	}
	var unmarshaled logrus.Level
	if err := unmarshaled.UnmarshalText([]byte("debug")); err != nil {
		return fmt.Errorf("failed to unmarshal 'debug': %w", err)
	}
	if unmarshaled != logrus.DebugLevel {
		return fmt.Errorf("expected UnmarshalText to yield DebugLevel, got %v", unmarshaled)
	}

	// 5. Logger configured with logrus.DebugLevel enables DebugLevel and higher severity levels while disabling TraceLevel
	logger := logrus.New()
	logger.SetLevel(logrus.DebugLevel)
	if logger.GetLevel() != logrus.DebugLevel {
		return fmt.Errorf("expected logger.GetLevel() to be DebugLevel, got %v", logger.GetLevel())
	}
	if !logger.IsLevelEnabled(logrus.DebugLevel) {
		return fmt.Errorf("expected IsLevelEnabled(DebugLevel) to be true")
	}
	if !logger.IsLevelEnabled(logrus.InfoLevel) {
		return fmt.Errorf("expected IsLevelEnabled(InfoLevel) to be true")
	}
	if !logger.IsLevelEnabled(logrus.WarnLevel) {
		return fmt.Errorf("expected IsLevelEnabled(WarnLevel) to be true")
	}
	if !logger.IsLevelEnabled(logrus.ErrorLevel) {
		return fmt.Errorf("expected IsLevelEnabled(ErrorLevel) to be true")
	}
	if logger.IsLevelEnabled(logrus.TraceLevel) {
		return fmt.Errorf("expected IsLevelEnabled(TraceLevel) to be false")
	}

	// 6. Logger configured with logrus.DebugLevel outputs log messages at DebugLevel and filters them when level is higher than DebugLevel
	var buf bytes.Buffer
	bufLogger := logrus.New()
	bufLogger.SetOutput(&buf)
	bufLogger.SetFormatter(&logrus.TextFormatter{
		DisableColors:    true,
		DisableTimestamp: true,
	})

	bufLogger.SetLevel(logrus.DebugLevel)
	bufLogger.Debug("test debug message")
	if !strings.Contains(buf.String(), "level=debug") || !strings.Contains(buf.String(), "msg=\"test debug message\"") {
		return fmt.Errorf("expected output to contain level=debug and message, got: %q", buf.String())
	}

	buf.Reset()
	bufLogger.SetLevel(logrus.InfoLevel)
	bufLogger.Debug("suppressed debug message")
	if buf.Len() != 0 {
		return fmt.Errorf("expected no output for Debug when level is InfoLevel, got: %q", buf.String())
	}

	return nil
}