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diff src/testdir/test_vim9_class.vim @ 31692:2f1af1b2f82d v9.0.1178

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patch 9.0.1178: a child class cannot override functions from a base class Commit: https://github.com/vim/vim/commit/58b40092e616585a763cf4d214d47ccd9167d6f7 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Jan 11 15:59:05 2023 +0000 patch 9.0.1178: a child class cannot override functions from a base class Problem: A child class cannot override functions from a base class. Solution: Allow overriding and implement "super".
author Bram Moolenaar <Bram@vim.org>
date Wed, 11 Jan 2023 17:00:05 +0100
parents ec76f9d2319e
children 2f61e308b997
line wrap: on
line diff
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -817,6 +817,27 @@ def Test_class_extends()
       endclass
   END
   v9.CheckScriptFailure(lines, 'E1354: Cannot extend SomeVar')
+
+  lines =<< trim END
+      vim9script
+      class Base
+        this.name: string
+        def ToString(): string
+          return this.name
+        enddef
+      endclass
+
+      class Child extends Base
+        this.age: number
+        def ToString(): string
+          return super.ToString() .. ': ' .. this.age
+        enddef
+      endclass
+
+      var o = Child.new('John', 42)
+      assert_equal('John: 42', o.ToString())
+  END
+  v9.CheckScriptSuccess(lines)
 enddef