wast: Added test argument check

go-interpreter · Dec 22, 2017 · 32235de · 32235de
1 parent b7d4566
commit 32235de
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/wast/scanner_test.go b/wast/scanner_test.go
@@ -9,6 +9,10 @@ import (
 var wastFile = flag.String("wast-file", "", "the wast file to test")
 
 func TestScanner(t *testing.T) {
+	if *wastFile == "" {
+		t.Errorf("error: no input file")
+	}
+
 	s := NewScanner(*wastFile)
 	if len(s.Errors) > 0 {
 		fmt.Println(s.Errors[0])