internal/scan: add -update to print tests
Change-Id: Ib267ee9ca3211f178a233449dd00552e5dd5feed
Reviewed-on: https://go-review.googlesource.com/c/vuln/+/496164
Auto-Submit: Ian Cottrell <iancottrell@google.com>
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
diff --git a/internal/scan/print_test.go b/internal/scan/print_test.go
index 0b8722f..3b352fa 100644
--- a/internal/scan/print_test.go
+++ b/internal/scan/print_test.go
@@ -5,8 +5,10 @@
import (
"bytes"
+ "flag"
"io/fs"
"os"
+ "path/filepath"
"strings"
"testing"
@@ -15,6 +17,8 @@
"golang.org/x/vuln/internal/scan"
)
+var update = flag.Bool("update", false, "update test files with results")
+
func TestPrinting(t *testing.T) {
testdata := os.DirFS("testdata")
inputs, err := fs.Glob(testdata, "*.json")
@@ -32,11 +36,16 @@
textname := strings.TrimSuffix(textfile, ".txt")
t.Run(textname, func(t *testing.T) {
wantText, _ := fs.ReadFile(testdata, textfile)
- got := &strings.Builder{}
+ got := &bytes.Buffer{}
handler := scan.NewTextHandler(got)
handler.Show = strings.Split(textname, "_")[1:]
testRunHandler(t, rawJSON, handler)
if diff := cmp.Diff(string(wantText), got.String()); diff != "" {
+ if *update {
+ // write the output back to the file
+ os.WriteFile(filepath.Join("testdata", textfile), got.Bytes(), 0644)
+ return
+ }
t.Errorf("Readable mismatch (-want, +got):\n%s", diff)
}
})
