junit-xml output

README.md

@@ -458,7 +458,7 @@ Usage:
   golangci-lint run [flags]
 
 Flags:
-      --out-format string           Format of output: colored-line-number|line-number|json|tab|checkstyle|code-climate (default "colored-line-number")
+      --out-format string           Format of output: colored-line-number|line-number|json|tab|checkstyle|code-climate|junit-xml (default "colored-line-number")
       --print-issued-lines          Print lines of code with issue (default true)
       --print-linter-name           Print linter name in issue line (default true)
       --issues-exit-code int        Exit code when issues were found (default 1)

pkg/commands/run.go

@@ -372,6 +372,8 @@ func (e *Executor) createPrinter() (printers.Printer, error) {
 		p = printers.NewCheckstyle()
 	case config.OutFormatCodeClimate:
 		p = printers.NewCodeClimate()
+	case config.OutFormatJunitXML:
+		p = printers.NewJunitXML()
 	default:
 		return nil, fmt.Errorf("unknown output format %s", format)
 	}

pkg/config/config.go

@@ -14,6 +14,7 @@ const (
 	OutFormatTab               = "tab"
 	OutFormatCheckstyle        = "checkstyle"
 	OutFormatCodeClimate       = "code-climate"
+	OutFormatJunitXML          = "junit-xml"
 )
 
 var OutFormats = []string{
@@ -23,6 +24,7 @@ var OutFormats = []string{
 	OutFormatTab,
 	OutFormatCheckstyle,
 	OutFormatCodeClimate,
+	OutFormatJunitXML,
 }
 
 type ExcludePattern struct {

pkg/printers/junitxml.go

@@ -0,0 +1,68 @@
+package printers
+
+import (
+	"context"
+	"encoding/xml"
+	"strings"
+
+	"github.com/golangci/golangci-lint/pkg/logutils"
+	"github.com/golangci/golangci-lint/pkg/result"
+)
+
+type testSuitesXML struct {
+	XMLName    xml.Name `xml:"testsuites"`
+	TestSuites []testSuiteXML
+}
+
+type testSuiteXML struct {
+	XMLName   xml.Name      `xml:"testsuite"`
+	Suite     string        `xml:"name,attr"`
+	TestCases []testCaseXML `xml:"testcase"`
+}
+
+type testCaseXML struct {
+	Name      string `xml:"name,attr"`
+	ClassName string `xml:"classname,attr"`
+	Status    string `xml:"status,attr"`
+}
+
+type JunitXML struct {
+}
+
+func NewJunitXML() *JunitXML {
+	return &JunitXML{}
+}
+
+func (JunitXML) Print(ctx context.Context, issues <-chan result.Issue) error {
+	suites := make(map[string]testSuiteXML) // use a map to group-by "FromLinter"
+
+	for i := range issues {
+		fromLinter := i.FromLinter
+		testSuite := suites[fromLinter]
+		testSuite.Suite = fromLinter
+
+		var source string
+		for _, line := range i.SourceLines {
+			source += strings.TrimSpace(line) + "; "
+		}
+		tc := testCaseXML{Name: i.Text,
+			ClassName: i.Pos.String(),
+			Status:    strings.TrimSuffix(source, "; "),
+		}
+
+		testSuite.TestCases = append(testSuite.TestCases, tc)
+		suites[fromLinter] = testSuite
+	}
+
+	var res testSuitesXML
+	for _, val := range suites {
+		res.TestSuites = append(res.TestSuites, val)
+	}
+
+	enc := xml.NewEncoder(logutils.StdOut)
+	enc.Indent("", "  ")
+	if err := enc.Encode(res); err != nil {
+		return err
+	}
+	return nil
+}