From 7a1bdaecf2d2a06eb06ed462e6ccae4954939fc9 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sat, 4 Feb 2023 15:45:27 +0000
Subject: [PATCH] patch 9.0.1280: inssufficient testing for what 9.0.1265 fixes

Problem:    Inssufficient testing for what 9.0.1265 fixes.
Solution:   Add a couple of test cases. (issue #11885)
---
 src/testdir/test_vim9_class.vim | 54 +++++++++++++++++++++++++++++++++
 src/version.c                   |  2 ++
 2 files changed, 56 insertions(+)

diff --git a/src/testdir/test_vim9_class.vim b/src/testdir/test_vim9_class.vim
index a8128c7c7..184a61f81 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -1050,6 +1050,60 @@ def Test_call_interface_method()
   END
   v9.CheckScriptSuccess(lines)
 
+  # method of interface returns a value
+  lines =<< trim END
+    vim9script
+    interface Base
+      def Enter(): string
+    endinterface
+
+    class Child implements Base
+      def Enter(): string
+        g:result ..= 'child'
+        return "/resource"
+      enddef
+    endclass
+
+    def F(obj: Base)
+      var r = obj.Enter()
+      g:result ..= r
+    enddef
+
+    g:result = ''
+    F(Child.new())
+    assert_equal('child/resource', g:result)
+    unlet g:result
+  END
+  v9.CheckScriptSuccess(lines)
+
+  lines =<< trim END
+    vim9script
+    class Base
+      def Enter(): string
+        return null_string
+      enddef
+    endclass
+
+    class Child extends Base
+      def Enter(): string
+        g:result ..= 'child'
+        return "/resource"
+      enddef
+    endclass
+
+    def F(obj: Base)
+      var r = obj.Enter()
+      g:result ..= r
+    enddef
+
+    g:result = ''
+    F(Child.new())
+    assert_equal('child/resource', g:result)
+    unlet g:result
+  END
+  v9.CheckScriptSuccess(lines)
+
+
   # No class that implements the interface.
   lines =<< trim END
       vim9script
diff --git a/src/version.c b/src/version.c
index 2e5b93201..cdca15168 100644
--- a/src/version.c
+++ b/src/version.c
@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1280,
 /**/
     1279,
 /**/
-- 
2.50.1