(goctl)fix: api timeout limited during api generation (#4513)

tools/goctl/pkg/parser/api/scanner/scanner.go

@@ -29,8 +29,6 @@ const (
 	// string mode end
 )
 
-var missingInput = errors.New("missing input")
-
 type mode int
 
 // Scanner is a lexical scanner.
@@ -629,7 +627,7 @@ func NewScanner(filename string, src interface{}) (*Scanner, error) {
 	}
 
 	if len(data) == 0 {
-		return nil, missingInput
+		return nil, fmt.Errorf("filename: %s,missing input", filename)
 	}
 
 	var runeList []rune

tools/goctl/pkg/parser/api/scanner/scanner_test.go

@@ -62,13 +62,13 @@ func TestNewScanner(t *testing.T) {
 		{
 			filename: "foo",
 			src:      "",
-			expected: missingInput,
+			expected: "missing input",
 		},
 	}
 	for _, v := range testData {
 		s, err := NewScanner(v.filename, v.src)
 		if err != nil {
-			assert.Equal(t, v.expected.(error).Error(), err.Error())
+			assert.Contains(t, err.Error(), v.expected)
 		} else {
 			assert.Equal(t, v.expected, s.filename)
 		}