[chore] remove space from func string representation (#740)

Author: atoulme

checkapi/internal/ast.go

@@ -56,6 +56,9 @@ func ExprToString(expr ast.Expr) string {
 		if len(typeParams) > 0 {
 			generics = fmt.Sprintf("[%s]", strings.Join(typeParams, ","))
 		}
+		if len(results) == 0 {
+			return fmt.Sprintf("func%s(%s)", generics, strings.Join(params, ","))
+		}
 		return fmt.Sprintf("func%s(%s) %s", generics, strings.Join(params, ","), strings.Join(results, ","))
 	case *ast.SelectorExpr:
 		return fmt.Sprintf("%s.%s", ExprToString(e.X), e.Sel.Name)

checkapi/internal/ast_test.go

@@ -54,7 +54,7 @@ func TestAST(t *testing.T) {
 		{
 			"func",
 			&ast.FuncType{Params: &ast.FieldList{List: []*ast.Field{}}},
-			"func() ",
+			"func()",
 		},
 		{
 			"func with params and return type",
@@ -118,7 +118,7 @@ func TestAST(t *testing.T) {
 					Type: &ast.FuncType{Params: &ast.FieldList{List: []*ast.Field{}}},
 				},
 			}}},
-			"{func func() }",
+			"{func func()}",
 		},
 		{
 			"chan",
@@ -149,7 +149,7 @@ func TestAST(t *testing.T) {
 				},
 				Results: nil,
 			},
-			"func[T ~string](T) ",
+			"func[T ~string](T)",
 		},
 	}