ci: add golangci-lint

.github/workflows/test.yaml

@@ -5,6 +5,14 @@ on:
     push:
 
 jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v8
+
   test:
     runs-on: ubuntu-latest
     strategy:

.golangci.yml

@@ -0,0 +1,30 @@
+version: "2"
+
+run:
+  issues-exit-code: 1
+
+formatters:
+  enable:
+    - gofmt
+    - gci
+
+linters:
+  enable:
+    - wrapcheck
+  settings:
+    wrapcheck:
+      ignore-package-globs:
+        # We already make sure your own packages wrap errors properly
+        - github.com/symfony-cli/*
+    errcheck:
+        exclude-functions:
+          - github.com/symfony-cli/terminal.Printf
+          - github.com/symfony-cli/terminal.Println
+          - github.com/symfony-cli/terminal.Printfln
+          - github.com/symfony-cli/terminal.Eprintf
+          - github.com/symfony-cli/terminal.Eprintln
+          - github.com/symfony-cli/terminal.Eprintfln
+          - github.com/symfony-cli/terminal.Eprint
+          - fmt.Fprintln
+          - fmt.Fprintf
+          - fmt.Fprint

application.go

@@ -96,7 +96,7 @@ func (a *Application) Run(arguments []string) (err error) {
 
 	if err != nil {
 		err = IncorrectUsageError{err}
-		ShowAppHelp(context)
+		_ = ShowAppHelp(context)
 		fmt.Fprintln(a.Writer)
 		HandleExitCoder(err)
 		return err
@@ -124,7 +124,7 @@ func (a *Application) Run(arguments []string) (err error) {
 		beforeErr := a.Before(context)
 		if beforeErr != nil {
 			fmt.Fprintf(a.Writer, "%v\n\n", beforeErr)
-			ShowAppHelp(context)
+			_ = ShowAppHelp(context)
 			HandleExitCoder(beforeErr)
 			err = beforeErr
 			return err
@@ -151,6 +151,15 @@ func (a *Application) Run(arguments []string) (err error) {
 	return err
 }
 
+// MustRun is the entry point to the CLI app. Parses the arguments slice and routes
+// to the proper flag/args combination. Under the hood it calls `Run` but will panic
+// if any error happen
+func (a *Application) MustRun(arguments []string) {
+	if err := a.Run(arguments); err != nil {
+		panic(err)
+	}
+}
+
 // Command returns the named command on App. Returns nil if the command does not
 // exist
 func (a *Application) Command(name string) *Command {

application_test.go

@@ -25,6 +25,7 @@ import (
 	"flag"
 	"fmt"
 	"io"
+	"log"
 	"os"
 	"reflect"
 	"strings"
@@ -92,7 +93,9 @@ func ExampleApplication_Run() {
 		},
 	}
 
-	app.Run(os.Args)
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
 	// Output:
 	// Hello Jeremy
 }
@@ -115,7 +118,9 @@ func ExampleApplication_Run_quiet() {
 		},
 	}
 
-	app.Run(os.Args)
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
 	// Output:
 }
 
@@ -138,7 +143,9 @@ func ExampleApplication_Run_quietDisabled() {
 		},
 	}
 
-	app.Run(os.Args)
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
 	// Output:
 	// Hello Jeremy
 	// Byebye Jeremy
@@ -164,7 +171,9 @@ func (ts *ApplicationSuite) ExampleApplication_Run_quietInvalid(c *C) {
 		},
 	}
 
-	app.Run(os.Args)
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
 	c.Assert(stdout.String(), Equals, `Output:
 <info>greet</> version <comment>0.0.0</>
 A new cli application
@@ -217,7 +226,9 @@ func (ts *ApplicationSuite) ExampleApplication_Run_appHelp(c *C) {
 			},
 		},
 	}
-	app.Run(os.Args)
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
 	c.Assert(stdout.String(), Equals, `Output:
 <info>greet</> version <comment>0.1.0</>
 A new cli application
@@ -262,7 +273,9 @@ func ExampleApplication_Run_commandHelp() {
 			},
 		},
 	}
-	app.Run(os.Args)
+	if err := app.Run(os.Args); err != nil {
+		log.Fatal(err)
+	}
 	// Output:
 	// <comment>Description:</>
 	//   use it to see a description
@@ -341,7 +354,7 @@ func (ts *ApplicationSuite) TestApp_CommandWithFlagBeforeTerminator(c *C) {
 	}
 	app.Commands = []*Command{command}
 
-	app.Run([]string{"", "cmd", "--option", "my-option", "my-arg", "--", "--notARealFlag"})
+	c.Assert(app.Run([]string{"", "cmd", "--option", "my-option", "my-arg", "--", "--notARealFlag"}), IsNil)
 
 	c.Assert(parsedOption, Equals, "my-option")
 	c.Assert(args, NotNil)
@@ -366,7 +379,7 @@ func (ts *ApplicationSuite) TestApp_CommandWithDash(c *C) {
 	}
 	app.Commands = []*Command{command}
 
-	app.Run([]string{"", "cmd", "my-arg", "-"})
+	c.Assert(app.Run([]string{"", "cmd", "my-arg", "-"}), IsNil)
 	c.Assert(args, NotNil)
 	c.Assert(args.Len(), Equals, 2)
 	c.Assert(args.Get("first"), Equals, "my-arg")
@@ -390,8 +403,7 @@ func (ts *ApplicationSuite) TestApp_CommandWithNoFlagBeforeTerminator(c *C) {
 	}
 	app.Commands = []*Command{command}
 
-	app.Run([]string{"", "cmd", "my-arg", "--", "notAFlagAtAll"})
-
+	c.Assert(app.Run([]string{"", "cmd", "my-arg", "--", "notAFlagAtAll"}), IsNil)
 	c.Assert(args.Get("first"), Equals, "my-arg")
 	c.Assert(args.Get("second"), Equals, "notAFlagAtAll")
 }
@@ -465,7 +477,7 @@ func (ts *ApplicationSuite) TestApp_Float64Flag(c *C) {
 		},
 	}
 
-	app.Run([]string{"", "--height", "1.93"})
+	c.Assert(app.Run([]string{"", "--height", "1.93"}), IsNil)
 	c.Assert(meters, Equals, 1.93)
 }
 
@@ -493,7 +505,9 @@ func TestApp_ParseSliceFlags(t *testing.T) {
 	}
 	app.Commands = []*Command{command}
 
-	app.Run([]string{"", "cmd", "-p", "22", "-p", "80", "-ip", "8.8.8.8", "-ip", "8.8.4.4", "my-first-arg"})
+	if err := app.Run([]string{"", "cmd", "-p", "22", "-p", "80", "-ip", "8.8.8.8", "-ip", "8.8.4.4", "my-first-arg"}); err != nil {
+		t.Error(err)
+	}
 
 	IntsEquals := func(a, b []int) bool {
 		if len(a) != len(b) {
@@ -556,7 +570,9 @@ func TestApp_ParseSliceFlagsWithMissingValue(t *testing.T) {
 	}
 	app.Commands = []*Command{command}
 
-	app.Run([]string{"", "cmd", "-a", "2", "-str", "A", "my-arg"})
+	if err := app.Run([]string{"", "cmd", "-a", "2", "-str", "A", "my-arg"}); err != nil {
+		t.Error(err)
+	}
 
 	var expectedIntSlice = []int{2}
 	var expectedStringSlice = []string{"A"}
@@ -784,7 +800,9 @@ func TestAppHelpPrinter(t *testing.T) {
 	}
 
 	app := &Application{}
-	app.Run([]string{"-h"})
+	if err := app.Run([]string{"-h"}); err != nil {
+		t.Error(err)
+	}
 
 	if wasCalled == false {
 		t.Errorf("Help printer expected to be called, but was not")
@@ -1036,7 +1054,9 @@ func TestApp_Run_Categories(t *testing.T) {
 		versionCommand.Hidden = nil
 	}()
 
-	app.Run([]string{"categories"})
+	if err := app.Run([]string{"categories"}); err != nil {
+		t.Error(err)
+	}
 
 	expect := commandCategories([]*commandCategory{
 		{

command.go

@@ -127,7 +127,7 @@ func (c *Command) Run(ctx *Context) (err error) {
 		err = checkRequiredArgs(c, context)
 	}
 	if err != nil {
-		ShowCommandHelp(ctx, c.FullName())
+		_ = ShowCommandHelp(ctx, c.FullName())
 		fmt.Fprintln(ctx.App.Writer)
 		return IncorrectUsageError{err}
 	}
@@ -153,7 +153,7 @@ func (c *Command) Run(ctx *Context) (err error) {
 	if c.Before != nil {
 		err = c.Before(context)
 		if err != nil {
-			ShowCommandHelp(ctx, c.FullName())
+			_ = ShowCommandHelp(ctx, c.FullName())
 			HandleExitCoder(err)
 			return err
 		}

command_test.go

@@ -52,7 +52,7 @@ func (cs *CommandSuite) TestCommandFlagParsing(c *C) {
 		app := &Application{}
 		app.setup()
 		set := flag.NewFlagSet("test", 0)
-		set.Parse(ca.testArgs)
+		c.Assert(set.Parse(ca.testArgs), IsNil)
 
 		context := NewContext(app, set, nil)
 
@@ -76,7 +76,7 @@ func (cs *CommandSuite) TestCommandFlagParsing(c *C) {
 		err := command.Run(context)
 
 		if ca.expectedErr == "" {
-			c.Assert(err, Equals, nil)
+			c.Assert(err, IsNil)
 		} else {
 			c.Assert(err, ErrorMatches, ca.expectedErr)
 		}

context.go

@@ -22,6 +22,8 @@ package console
 import (
 	"flag"
 	"fmt"
+
+	"github.com/pkg/errors"
 )
 
 // Context is a type that is passed through to
@@ -45,7 +47,7 @@ func NewContext(app *Application, set *flag.FlagSet, parentCtx *Context) *Contex
 // Set assigns a value to a context flag.
 func (c *Context) Set(name, value string) error {
 	if fs := lookupFlagSet(name, c); fs != nil {
-		return fs.Set(name, value)
+		return errors.WithStack(fs.Set(name, value))
 	}
 
 	return fmt.Errorf("no such flag -%v", name)

context_test.go

@@ -148,7 +148,7 @@ func (cs *ContextSuite) TestContext_Args(c *C) {
 	set := flag.NewFlagSet("test", 0)
 	set.Bool("myflag", false, "doc")
 	ctx := NewContext(nil, set, nil)
-	set.Parse([]string{"--myflag", "bat", "baz"})
+	c.Assert(set.Parse([]string{"--myflag", "bat", "baz"}), IsNil)
 	c.Assert(ctx.Args().Len(), Equals, 2)
 	c.Assert(ctx.Bool("myflag"), Equals, true)
 }
@@ -157,7 +157,7 @@ func (cs *ContextSuite) TestContext_NArg(c *C) {
 	set := flag.NewFlagSet("test", 0)
 	set.Bool("myflag", false, "doc")
 	ctx := NewContext(nil, set, nil)
-	set.Parse([]string{"--myflag", "bat", "baz"})
+	c.Assert(set.Parse([]string{"--myflag", "bat", "baz"}), IsNil)
 	c.Assert(ctx.NArg(), Equals, 2)
 }
 
@@ -204,8 +204,8 @@ func (cs *ContextSuite) TestContext_IsSet(c *C) {
 	parentCtx := NewContext(nil, parentSet, nil)
 	ctx := NewContext(nil, set, parentCtx)
 
-	set.Parse([]string{"--one-flag", "--two-flag", "frob"})
-	parentSet.Parse([]string{"--top-flag"})
+	c.Assert(set.Parse([]string{"--one-flag", "--two-flag", "frob"}), IsNil)
+	c.Assert(parentSet.Parse([]string{"--top-flag"}), IsNil)
 
 	c.Assert(ctx.IsSet("one-flag"), Equals, true)
 	c.Assert(ctx.IsSet("two-flag"), Equals, true)
@@ -219,12 +219,14 @@ func (cs *ContextSuite) TestContext_Set(c *C) {
 	set.Int("int", 5, "an int")
 	ctx := NewContext(nil, set, nil)
 
-	ctx.Set("int", "1")
+	c.Assert(ctx.Set("int", "1"), IsNil)
 	c.Assert(ctx.Int("int"), Equals, 1)
 }
 
 func (cs *ContextSuite) TestContext_Set_AppFlags(c *C) {
-	defer terminal.SetLogLevel(1)
+	defer func() {
+		c.Assert(terminal.SetLogLevel(1), IsNil)
+	}()
 
 	app := &Application{
 		Commands: []*Command{
@@ -239,7 +241,7 @@ func (cs *ContextSuite) TestContext_Set_AppFlags(c *C) {
 			},
 		},
 	}
-	app.Run([]string{"cmd", "foo"})
+	app.MustRun([]string{"cmd", "foo"})
 }
 
 func (cs *ContextSuite) TestContext_Lineage(c *C) {
@@ -249,8 +251,8 @@ func (cs *ContextSuite) TestContext_Lineage(c *C) {
 	parentSet.Bool("top-flag", true, "doc")
 	parentCtx := NewContext(nil, parentSet, nil)
 	ctx := NewContext(nil, set, parentCtx)
-	set.Parse([]string{"--local-flag"})
-	parentSet.Parse([]string{"--top-flag"})
+	c.Assert(set.Parse([]string{"--local-flag"}), IsNil)
+	c.Assert(parentSet.Parse([]string{"--top-flag"}), IsNil)
 
 	lineage := ctx.Lineage()
 	c.Assert(len(lineage), Equals, 2)
@@ -265,8 +267,8 @@ func (cs *ContextSuite) TestContext_lookupFlagSet(c *C) {
 	parentSet.Bool("top-flag", true, "doc")
 	parentCtx := NewContext(nil, parentSet, nil)
 	ctx := NewContext(nil, set, parentCtx)
-	set.Parse([]string{"--local-flag"})
-	parentSet.Parse([]string{"--top-flag"})
+	c.Assert(set.Parse([]string{"--local-flag"}), IsNil)
+	c.Assert(parentSet.Parse([]string{"--top-flag"}), IsNil)
 
 	fs := lookupFlagSet("top-flag", ctx)
 	c.Assert(fs, Equals, parentCtx.flagSet)

errors_stacktrace.go

@@ -157,7 +157,7 @@ func FormatErrorChain(buf *bytes.Buffer, err error, trimPaths bool) bool {
 			if trimPaths {
 				file = trimGOPATH(fn.Name(), file)
 			}
-			buf.WriteString(fmt.Sprintf("%s\n\t<info>%s:%d</>", fn.Name(), file, line))
+			fmt.Fprintf(buf, "%s\n\t<info>%s:%d</>", fn.Name(), file, line)
 		}
 	}
 

flag.go

@@ -192,7 +192,7 @@ func (m *StringMap) String() string {
 
 // Serialized allows StringSlice to fulfill Serializeder
 func (m *StringMap) Serialized() string {
-	jsonBytes, _ := json.Marshal(m)
+	jsonBytes, _ := json.Marshal(m.m)
 	return fmt.Sprintf("%s%s", slPfx, string(jsonBytes))
 }