Print JSON instead of raw Go structs for -debug.print-events

go-junit-report.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"encoding/json"
 	"encoding/xml"
 	"flag"
 	"fmt"
@@ -82,8 +83,11 @@ func main() {
 	}
 
 	if *printEvents {
-		for i, ev := range parser.Events() {
-			fmt.Printf("%02d: %#v\n", i, ev)
+		enc := json.NewEncoder(os.Stderr)
+		for _, event := range parser.Events() {
+			if err := enc.Encode(event); err != nil {
+				exitf("error printing events: %v\n", err)
+			}
 		}
 	}
 	for i := range report.Packages {

pkg/parser/gotest/event.go

@@ -2,24 +2,24 @@ package gotest
 
 import "time"
 
-// Event is a single event in a test or benchmark.
+// Event is a single event in a Go test or benchmark.
 type Event struct {
-	Type string
+	Type string `json:"type"`
 
-	Name     string
-	Result   string
-	Duration time.Duration
-	Data     string
-	Indent   int
+	Name     string        `json:"name,omitempty"`
+	Result   string        `json:"result,omitempty"`
+	Duration time.Duration `json:"duration,omitempty"`
+	Data     string        `json:"data,omitempty"`
+	Indent   int           `json:"indent,omitempty"`
 
 	// Code coverage
-	CovPct      float64
-	CovPackages []string
+	CovPct      float64  `json:"coverage_percentage,omitempty"`
+	CovPackages []string `json:"coverage_packages,omitempty"`
 
 	// Benchmarks
-	Iterations  int64
-	NsPerOp     float64
-	MBPerSec    float64
-	BytesPerOp  int64
-	AllocsPerOp int64
+	Iterations  int64   `json:"benchmark_iterations,omitempty"`
+	NsPerOp     float64 `json:"benchmark_ns_per_op,omitempty"`
+	MBPerSec    float64 `json:"benchmark_mb_per_sec,omitempty"`
+	BytesPerOp  int64   `json:"benchmark_bytes_per_op,omitempty"`
+	AllocsPerOp int64   `json:"benchmark_allocs_per_op,omitempty"`
 }