Add missing godoc on exported types

Author: jstemmer

gtr/gtr.go

@@ -10,6 +10,7 @@ import (
 // Result is the result of a test.
 type Result int
 
+// Test results.
 const (
 	Unknown Result = iota
 	Pass

main.go

@@ -1,3 +1,6 @@
+// go-junit-report converts `go test` output to a JUnit compatible XML report.
+//
+// See README.md for more information and usage examples.
 package main
 
 import (
@@ -11,6 +14,7 @@ import (
 	"github.com/jstemmer/go-junit-report/v2/parser/gotest"
 )
 
+// Current release information printed by the -version flag.
 var (
 	Version   = "v2.0.0-dev"
 	Revision  = "HEAD"

parser/gotest/json.go

@@ -14,7 +14,7 @@ func NewJSONParser(options ...Option) *JSONParser {
 	return &JSONParser{gp: NewParser(options...)}
 }
 
-// Parser is a Go test json output Parser.
+// JSONParser is a `go test -json` output Parser.
 type JSONParser struct {
 	gp *Parser
 }