Add standard-json format

cmd/main.go

@@ -136,6 +136,7 @@ Formats:
     pkgname                  print a line for each package
     pkgname-and-test-fails   print a line for each package and failed test output
     testname                 print a line for each test and package
+    standard-json            standard go test -json format
     standard-quiet           standard go test format
     standard-verbose         standard go test -v format
 

cmd/testdata/gotestsum-help-text

@@ -35,6 +35,7 @@ Formats:
     pkgname                  print a line for each package
     pkgname-and-test-fails   print a line for each package and failed test output
     testname                 print a line for each test and package
+    standard-json            standard go test -json format
     standard-quiet           standard go test format
     standard-verbose         standard go test -v format
 

testjson/format.go

@@ -1,6 +1,7 @@
 package testjson
 
 import (
+	"encoding/json"
 	"fmt"
 	"io"
 	"strings"
@@ -41,6 +42,15 @@ func standardQuietFormat(event TestEvent, _ *Execution) string {
 	return event.Output
 }
 
+// go test -json
+func standardJSONFormat(event TestEvent, _ *Execution) string {
+	b, err := json.Marshal(event)
+	if err != nil {
+		return ""
+	}
+	return string(b) + "\n"
+}
+
 func testNameFormat(event TestEvent, exec *Execution) string {
 	result := colorEvent(event)(strings.ToUpper(string(event.Action)))
 	formatTest := func() string {
@@ -240,6 +250,8 @@ func NewEventFormatter(out io.Writer, format string, formatOpts FormatOptions) E
 	switch format {
 	case "debug":
 		return &formatAdapter{out, debugFormat}
+	case "standard-json":
+		return &formatAdapter{out, standardJSONFormat}
 	case "standard-verbose":
 		return &formatAdapter{out, standardVerboseFormat}
 	case "standard-quiet":

testjson/format_test.go

@@ -134,6 +134,11 @@ func TestFormats_DefaultGoTestJson(t *testing.T) {
 			format:      standardQuietFormat,
 			expectedOut: "format/standard-quiet.out",
 		},
+		{
+			name:        "standard-json",
+			format:      standardJSONFormat,
+			expectedOut: "format/standard-json.out",
+		},
 	}
 
 	for _, tc := range testCases {