clean up any linter failures

.github/workflows/lint.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
      - name: harden runner
-       uses: step-security/harden-runner@55d479fb1c5bcad5a4f9099a5d9f37c8857b2845 # v2.4.1
+       uses: step-security/harden-runner@17d0e2bd7d51742c71671bd19fa12bdc9d40a3d6 # v2.8.1
        with:
          egress-policy: block
          disable-sudo: true
@@ -28,14 +28,14 @@ jobs:
            objects.githubusercontent.com:443
            proxy.golang.org:443
      - name: checkout code
-       uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+       uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
      - name: setup go
        uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # v5.0.1
        with:
          go-version: 1.21
      - name: lint
-       uses: golangci/golangci-lint-action@639cd343e1d3b897ff35927a75193d57cfcba299 # v3.6.0
+       uses: golangci/golangci-lint-action@a4f60bb28d35aeee14e6880718e0c85ff1882e64 # v6.0.1
        with:
-         version: v1.53
+         version: v1.59.1
          args: --timeout=5m0s --verbose
          only-new-issues: true

.golangci.yaml

@@ -0,0 +1,6 @@
+linters-settings:
+  staticcheck:
+    checks:
+      - all
+      - '-ST1000' # ignore at least one file in package should have comment
+      - '-EXC0003' # ignore the stuttered name error

assertion/json/errors.go

@@ -103,9 +103,8 @@ func JSONUnmarshalError(err error, node *yaml.Node) error {
 			"%w: %s at line %d, column %d",
 			ErrJSONUnmarshalError, err, node.Line, node.Column,
 		)
-	} else {
-		return fmt.Errorf("%w: %s", ErrJSONUnmarshalError, err)
 	}
+	return fmt.Errorf("%w: %s", ErrJSONUnmarshalError, err)
 }
 
 // JSONPathInvalid returns an ErrParse when a JSONPath expression could not be

assertion/json/json.go

@@ -104,7 +104,7 @@ func (e *Expect) UnmarshalYAML(node *yaml.Node) error {
 			if err := valNode.Decode(&paths); err != nil {
 				return err
 			}
-			for path, _ := range paths {
+			for path := range paths {
 				if len(path) == 0 || path[0] != '$' {
 					return JSONPathInvalidNoRoot(path, valNode)
 				}
@@ -121,7 +121,7 @@ func (e *Expect) UnmarshalYAML(node *yaml.Node) error {
 			if err := valNode.Decode(&pathFormats); err != nil {
 				return err
 			}
-			for pathFormat, _ := range pathFormats {
+			for pathFormat := range pathFormats {
 				if len(pathFormat) == 0 || pathFormat[0] != '$' {
 					return JSONPathInvalidNoRoot(pathFormat, valNode)
 				}
@@ -229,9 +229,9 @@ func (a *assertions) pathsOK() bool {
 			a.Fail(JSONPathNotFound(path, err))
 			return false
 		}
-		switch got.(type) {
+		switch got := got.(type) {
 		case string:
-			if expVal != got.(string) {
+			if expVal != got {
 				a.Fail(JSONPathNotEqual(path, expVal, got))
 				return false
 			}
@@ -241,7 +241,7 @@ func (a *assertions) pathsOK() bool {
 				a.Fail(JSONPathConversionError(path, expVal, got))
 				return false
 			}
-			if expValInt != got.(int) {
+			if expValInt != got {
 				a.Fail(JSONPathNotEqual(path, expVal, got))
 				return false
 			}
@@ -251,7 +251,7 @@ func (a *assertions) pathsOK() bool {
 				a.Fail(JSONPathConversionError(path, expVal, got))
 				return false
 			}
-			if expValFloat != got.(float64) {
+			if expValFloat != got {
 				a.Fail(JSONPathNotEqual(path, expVal, got))
 				return false
 			}
@@ -261,7 +261,7 @@ func (a *assertions) pathsOK() bool {
 				a.Fail(JSONPathConversionError(path, expVal, got))
 				return false
 			}
-			if expValBool != got.(bool) {
+			if expValBool != got {
 				a.Fail(JSONPathNotEqual(path, expVal, got))
 				return false
 			}

assertion/json/json_test.go

@@ -6,7 +6,7 @@ package json_test
 
 import (
 	"context"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"testing"
 
@@ -92,7 +92,7 @@ paths:
 }
 
 func content() []byte {
-	b, _ := ioutil.ReadFile(filepath.Join("testdata", "books.json"))
+	b, _ := os.ReadFile(filepath.Join("testdata", "books.json"))
 	return b
 }
 

debug/print.go

@@ -31,6 +31,7 @@ func Printf(
 	}
 	msg := fmt.Sprintf(format, args...)
 	for _, w := range writers {
+		//nolint:errcheck
 		w.Write([]byte(msg))
 	}
 }
@@ -57,6 +58,7 @@ func Println(
 	}
 	msg := fmt.Sprintf(format, args...)
 	for _, w := range writers {
+		//nolint:errcheck
 		w.Write([]byte(msg))
 	}
 }

fixture/generic_test.go

@@ -47,7 +47,7 @@ func TestStarter(t *testing.T) {
 
 	assert.False(started)
 
-	f.Start(context.TODO())
+	_ = f.Start(context.TODO())
 
 	assert.True(started)
 }

fixture/json/json.go

@@ -8,7 +8,6 @@ import (
 	"context"
 	"encoding/json"
 	"io"
-	"io/ioutil"
 	"strconv"
 
 	"github.com/PaesslerAG/jsonpath"
@@ -49,11 +48,11 @@ func (f *jsonFixture) State(path string) interface{} {
 	if err != nil {
 		return nil
 	}
-	switch got.(type) {
+	switch got := got.(type) {
 	case string:
-		return got.(string)
+		return got
 	case float64:
-		return strconv.FormatFloat(got.(float64), 'f', 0, 64)
+		return strconv.FormatFloat(got, 'f', 0, 64)
 	default:
 		return nil
 	}
@@ -64,17 +63,16 @@ func (f *jsonFixture) State(path string) interface{} {
 func New(data interface{}) (gdttypes.Fixture, error) {
 	var err error
 	var b []byte
-	switch data.(type) {
+	switch data := data.(type) {
 	case io.Reader:
-		r := data.(io.Reader)
-		b, err = ioutil.ReadAll(r)
+		b, err = io.ReadAll(data)
 		if err != nil {
 			return nil, err
 		}
 	case []byte:
-		b = data.([]byte)
+		b = data
 	case string:
-		b = []byte(data.(string))
+		b = []byte(data)
 	}
 	f := jsonFixture{
 		data: interface{}(nil),

plugin/exec/action.go

@@ -58,8 +58,7 @@ func (a *Action) Do(
 
 	debug.Println(ctx, "exec: %s %s", target, args)
 
-	var cmd *exec.Cmd
-	cmd = exec.CommandContext(ctx, target, args...)
+	cmd := exec.CommandContext(ctx, target, args...)
 
 	outpipe, err := cmd.StdoutPipe()
 	if err != nil {
@@ -78,13 +77,17 @@ func (a *Action) Do(
 		return err
 	}
 	if outbuf != nil {
-		outbuf.ReadFrom(outpipe)
+		if _, err = outbuf.ReadFrom(outpipe); err != nil {
+			debug.Println(ctx, "exec: error reading from stdout: %s", err)
+		}
 		if outbuf.Len() > 0 {
 			debug.Println(ctx, "exec: stdout: %s", outbuf.String())
 		}
 	}
 	if errbuf != nil {
-		errbuf.ReadFrom(errpipe)
+		if _, err = errbuf.ReadFrom(errpipe); err != nil {
+			debug.Println(ctx, "exec: error reading from stderr: %s", err)
+		}
 		if errbuf.Len() > 0 {
 			debug.Println(ctx, "exec: stderr: %s", errbuf.String())
 		}

plugin/exec/defaults.go

@@ -8,7 +8,6 @@ import (
 	"gopkg.in/yaml.v3"
 
 	"github.com/gdt-dev/gdt/errors"
-	gdttypes "github.com/gdt-dev/gdt/types"
 )
 
 type execDefaults struct{}
@@ -47,15 +46,3 @@ func (d *Defaults) UnmarshalYAML(node *yaml.Node) error {
 	}
 	return nil
 }
-
-// fromBaseDefaults returns an exec plugin-specific Defaults from a Spec
-func fromBaseDefaults(base *gdttypes.Defaults) *Defaults {
-	if base == nil {
-		return nil
-	}
-	d := base.For(pluginName)
-	if d == nil {
-		return nil
-	}
-	return d.(*Defaults)
-}

plugin/exec/eval_test.go

@@ -9,7 +9,6 @@ import (
 	"bytes"
 	"context"
 	"flag"
-	"fmt"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -196,7 +195,7 @@ func TestExecSleepTimeout(t *testing.T) {
 
 	// The test should have failed...
 	require.NotNil(err)
-	debugout := fmt.Sprintf("%s", outerr)
+	debugout := string(outerr)
 	require.Contains(debugout, "assertion failed: timeout exceeded")
 }
 
@@ -273,6 +272,7 @@ func TestFailExecTimeoutCascade(t *testing.T) {
 
 	ctx := gdtcontext.New(gdtcontext.WithDebug())
 	err = s.Run(ctx, t)
+	require.Nil(err)
 }
 
 func TestExecTimeoutCascade(t *testing.T) {
@@ -288,7 +288,7 @@ func TestExecTimeoutCascade(t *testing.T) {
 	// The test should have failed...
 	require.NotNil(err)
 
-	debugout := fmt.Sprintf("%s", outerr)
+	debugout := string(outerr)
 	require.Contains(debugout, "using timeout of 500ms (expected: false) [scenario default]")
 	require.Contains(debugout, "using timeout of 20ms (expected: true)")
 }
@@ -328,7 +328,7 @@ func TestExecOnFail(t *testing.T) {
 	// The test should have failed...
 	require.NotNil(err)
 
-	debugout := fmt.Sprintf("%s", outerr)
+	debugout := string(outerr)
 	require.Contains(debugout, "assertion failed: not equal: expected dat but got cat")
 	require.Contains(debugout, "echo [bad kitty]")
 }

scenario/from.go

@@ -6,7 +6,6 @@ package scenario
 
 import (
 	"io"
-	"io/ioutil"
 
 	"gopkg.in/yaml.v3"
 
@@ -20,7 +19,7 @@ func FromReader(
 	r io.Reader,
 	mods ...ScenarioModifier,
 ) (*Scenario, error) {
-	contents, err := ioutil.ReadAll(r)
+	contents, err := io.ReadAll(r)
 	if err != nil {
 		return nil, err
 	}

scenario/run_test.go

@@ -9,7 +9,6 @@ import (
 	"bytes"
 	"context"
 	"flag"
-	"fmt"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -35,7 +34,8 @@ func TestRun(t *testing.T) {
 	require.Nil(err)
 	require.NotNil(s)
 
-	s.Run(context.TODO(), t)
+	err = s.Run(context.TODO(), t)
+	require.Nil(err)
 }
 
 func TestPriorRun(t *testing.T) {
@@ -172,7 +172,7 @@ func TestRetryTestOverride(t *testing.T) {
 	// The test should have failed...
 	require.NotNil(err)
 
-	debugout := fmt.Sprintf("%s", outerr)
+	debugout := string(outerr)
 	require.Contains(debugout, "[gdt] [retry-test-override] run: exceeded max attempts 2. stopping.")
 }
 

suite/from.go

@@ -31,7 +31,7 @@ func FromDir(
 
 	if err := filepath.Walk(
 		dirPath,
-		func(path string, info os.FileInfo, err error) error {
+		func(path string, info os.FileInfo, _ error) error {
 			if info.IsDir() {
 				return nil
 			}