patch 9.0.1053: default constructor arguments are not optional
Problem: Default constructor arguments are not optional.
Solution: Use "= v:none" to make constructor arguments optional.
diff --git a/src/testdir/test_vim9_class.vim b/src/testdir/test_vim9_class.vim
index d444af0..3f66f3f 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -182,5 +182,56 @@
v9.CheckScriptSuccess(lines)
enddef
+def Test_class_default_new()
+ var lines =<< trim END
+ vim9script
+
+ class TextPosition
+ this.lnum: number = 1
+ this.col: number = 1
+ endclass
+
+ var pos = TextPosition.new()
+ assert_equal(1, pos.lnum)
+ assert_equal(1, pos.col)
+
+ pos = TextPosition.new(v:none, v:none)
+ assert_equal(1, pos.lnum)
+ assert_equal(1, pos.col)
+
+ pos = TextPosition.new(3, 22)
+ assert_equal(3, pos.lnum)
+ assert_equal(22, pos.col)
+
+ pos = TextPosition.new(v:none, 33)
+ assert_equal(1, pos.lnum)
+ assert_equal(33, pos.col)
+ END
+ v9.CheckScriptSuccess(lines)
+
+ lines =<< trim END
+ vim9script
+ class Person
+ this.name: string
+ this.age: number = 42
+ this.education: string = "unknown"
+
+ def new(this.name, this.age = v:none, this.education = v:none)
+ enddef
+ endclass
+
+ var piet = Person.new("Piet")
+ assert_equal("Piet", piet.name)
+ assert_equal(42, piet.age)
+ assert_equal("unknown", piet.education)
+
+ var chris = Person.new("Chris", 4, "none")
+ assert_equal("Chris", chris.name)
+ assert_equal(4, chris.age)
+ assert_equal("none", chris.education)
+ END
+ v9.CheckScriptSuccess(lines)
+enddef
+
" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker