chore: groups testpackage files to a package

Author: ldez

test/testdata/testpackage_test.go renamed to pkg/golinters/testpackage/testdata/testpackage_test.go

@@ -1,4 +1,4 @@
-package golinters
+package testpackage
 
 import (
 	"strings"
@@ -10,7 +10,7 @@ import (
 	"github.com/golangci/golangci-lint/pkg/goanalysis"
 )
 
-func NewTestpackage(cfg *config.TestpackageSettings) *goanalysis.Linter {
+func New(cfg *config.TestpackageSettings) *goanalysis.Linter {
 	a := testpackage.NewAnalyzer()
 
 	var settings map[string]map[string]any

pkg/golinters/testpackage.go renamed to pkg/golinters/testpackage/testpackage.go

@@ -0,0 +1,11 @@
+package testpackage
+
+import (
+	"testing"
+
+	"github.com/golangci/golangci-lint/test/testshared/integration"
+)
+
+func TestFromTestdata(t *testing.T) {
+	integration.RunTestdata(t)
+}

pkg/golinters/testpackage/testpackage_integration_test.go

@@ -96,6 +96,7 @@ import (
 	"github.com/golangci/golangci-lint/pkg/golinters/tenv"
 	"github.com/golangci/golangci-lint/pkg/golinters/testableexamples"
 	"github.com/golangci/golangci-lint/pkg/golinters/testifylint"
+	"github.com/golangci/golangci-lint/pkg/golinters/testpackage"
 	"github.com/golangci/golangci-lint/pkg/golinters/whitespace"
 	"github.com/golangci/golangci-lint/pkg/golinters/zerologlint"
 	"github.com/golangci/golangci-lint/pkg/lint/linter"
@@ -720,7 +721,7 @@ func (LinterBuilder) Build(cfg *config.Config) ([]*linter.Config, error) {
 			WithLoadForGoAnalysis().
 			WithURL("https://github.com/Antonboom/testifylint"),
 
-		linter.NewConfig(golinters.NewTestpackage(&cfg.LintersSettings.Testpackage)).
+		linter.NewConfig(testpackage.New(&cfg.LintersSettings.Testpackage)).
 			WithSince("v1.25.0").
 			WithPresets(linter.PresetStyle, linter.PresetTest).
 			WithURL("https://github.com/maratori/testpackage"),