Find function signature return value names

And add a test function that does have named returned values.

1 files changed, 14 insertions, 1 deletions

diff --git a/testdata/signature.go b/testdata/signature.go
index 17cfd0b..6fc15fc 100644
--- a/testdata/signature.go
+++ b/testdata/signature.go
@@ -2,7 +2,7 @@ package main
 
 import "errors"
 
-func declareErrInSignature() error { // want "return signature should be '(err error)'"
+func shouldDeclareErrInSignature() error { // want "return signature should be '(err error)'"
 	var err error // Should use variable declared in signature
 
 	err = nil
@@ -16,3 +16,16 @@ func declareErrInSignature() error { // want "return signature should be '(err e
 
 	return nil // want "does not return 'err'"
 }
+
+func doesDeclareErrInSignature() (err error) {
+	err = nil
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		err = errors.New("defer error")
+	}()
+
+	return nil // want "does not return 'err'"
+}