add FuzzQuoteString and FuzzQuoteBytes

internal/sanitize/sanitize_fuzz_test.go

@@ -0,0 +1,43 @@
+package sanitize_test
+
+import (
+	"testing"
+
+	"github.com/jackc/pgx/v5/internal/sanitize"
+)
+
+func FuzzQuoteString(f *testing.F) {
+	f.Add("")
+	f.Add("\n")
+	f.Add("sample text")
+	f.Add("sample q'u'o't'e's")
+	f.Add("select 'quoted $42', $1")
+
+	f.Fuzz(func(t *testing.T, input string) {
+		got := sanitize.QuoteString(input)
+		want := oldQuoteString(input)
+
+		if want != got {
+			t.Errorf("got  %q", got)
+			t.Fatalf("want %q", want)
+		}
+	})
+}
+
+func FuzzQuoteBytes(f *testing.F) {
+	f.Add([]byte(nil))
+	f.Add([]byte("\n"))
+	f.Add([]byte("sample text"))
+	f.Add([]byte("sample q'u'o't'e's"))
+	f.Add([]byte("select 'quoted $42', $1"))
+
+	f.Fuzz(func(t *testing.T, input []byte) {
+		got := sanitize.QuoteBytes(input)
+		want := oldQuoteBytes(input)
+
+		if want != got {
+			t.Errorf("got  %q", got)
+			t.Fatalf("want %q", want)
+		}
+	})
+}