Fixes #12

package/moq/moq.go

@@ -235,7 +235,11 @@ func (mock *{{$obj.InterfaceName}}Mock) {{.Name}}({{.Arglist}}) {{.ReturnArglist
 	if mock.{{.Name}}Func == nil {
 		panic("moq: {{$obj.InterfaceName}}Mock.{{.Name}}Func is nil but was just called")
 	}
+	{{ if .ReturnArglist }}
 	return mock.{{.Name}}Func({{.ArgCallList}})
+	{{ else }}
+	mock.{{.Name}}Func({{.ArgCallList}})
+	{{ end }}
 }
 {{ end -}}
 {{ end -}}`

package/moq/moq_test.go

@@ -89,3 +89,28 @@ func TestVariadicArguments(t *testing.T) {
 		}
 	}
 }
+
+func TestNothingToReturn(t *testing.T) {
+	m, err := New("testdata/example", "")
+	if err != nil {
+		t.Errorf("moq.New: %s", err)
+	}
+	var buf bytes.Buffer
+	err = m.Mock(&buf, "PersonStore")
+	if err != nil {
+		t.Errorf("m.Mock: %s", err)
+	}
+	s := buf.String()
+	if strings.Contains(s, `return mock.ClearCacheFunc(id)`) {
+		t.Errorf("should not have return for items that have no return arguments")
+	}
+	// assertions of things that should be mentioned
+	var strs = []string{
+		"mock.ClearCacheFunc(id)",
+	}
+	for _, str := range strs {
+		if !strings.Contains(s, str) {
+			t.Errorf("expected but missing: \"%s\"", str)
+		}
+	}
+}

package/moq/testdata/example/example.go

@@ -12,4 +12,5 @@ type Person struct {
 type PersonStore interface {
 	Get(ctx context.Context, id string) (*Person, error)
 	Create(ctx context.Context, person *Person, confirm bool) error
+	ClearCache(id string)
 }