add a benchmark for report unmarshalling

report/benchmark_internal_test.go

@@ -0,0 +1,40 @@
+package report
+
+import (
+	"flag"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+var (
+	benchReportPath = flag.String("bench-report-path", "", "report file, or dir with files, to use for benchmarking (relative to this package)")
+)
+
+func BenchmarkReportUnmarshal(b *testing.B) {
+	b.ReportAllocs()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		b.StopTimer()
+		b.StartTimer()
+		if err := readReportFiles(*benchReportPath); err != nil {
+			b.Fatal(err)
+		}
+	}
+}
+
+func readReportFiles(path string) error {
+	return filepath.Walk(path,
+		func(p string, info os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+			if info.IsDir() {
+				return nil
+			}
+			if _, err := MakeFromFile(p); err != nil {
+				return err
+			}
+			return nil
+		})
+}