patch 8.2.4554: Vim9: using null values not sufficiently tested
Problem: Vim9: using null values not sufficiently tested.
Solution: Add more tests. Fix uncovered problem.
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 43fc68e..8c99ad4 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -3759,6 +3759,114 @@
v9.CheckScriptFailure(lines + ['echo H(G(F2))'], 'E1013:')
enddef
+def Test_call_func_with_null()
+ var lines =<< trim END
+ def Fstring(v: string)
+ assert_equal(null_string, v)
+ enddef
+ Fstring(null_string)
+ def Fblob(v: blob)
+ assert_equal(null_blob, v)
+ enddef
+ Fblob(null_blob)
+ def Flist(v: list<number>)
+ assert_equal(null_list, v)
+ enddef
+ Flist(null_list)
+ def Fdict(v: dict<number>)
+ assert_equal(null_dict, v)
+ enddef
+ Fdict(null_dict)
+ def Ffunc(Fv: func(number): number)
+ assert_equal(null_function, Fv)
+ enddef
+ Ffunc(null_function)
+ if has('channel')
+ def Fchannel(v: channel)
+ assert_equal(null_channel, v)
+ enddef
+ Fchannel(null_channel)
+ def Fjob(v: job)
+ assert_equal(null_job, v)
+ enddef
+ Fjob(null_job)
+ endif
+ END
+ v9.CheckDefAndScriptSuccess(lines)
+enddef
+
+def Test_null_default_argument()
+ var lines =<< trim END
+ def Fstring(v: string = null_string)
+ assert_equal(null_string, v)
+ enddef
+ Fstring()
+ def Fblob(v: blob = null_blob)
+ assert_equal(null_blob, v)
+ enddef
+ Fblob()
+ def Flist(v: list<number> = null_list)
+ assert_equal(null_list, v)
+ enddef
+ Flist()
+ def Fdict(v: dict<number> = null_dict)
+ assert_equal(null_dict, v)
+ enddef
+ Fdict()
+ def Ffunc(Fv: func(number): number = null_function)
+ assert_equal(null_function, Fv)
+ enddef
+ Ffunc()
+ if has('channel')
+ def Fchannel(v: channel = null_channel)
+ assert_equal(null_channel, v)
+ enddef
+ Fchannel()
+ def Fjob(v: job = null_job)
+ assert_equal(null_job, v)
+ enddef
+ Fjob()
+ endif
+ END
+ v9.CheckDefAndScriptSuccess(lines)
+enddef
+
+def Test_null_return()
+ var lines =<< trim END
+ def Fstring(): string
+ return null_string
+ enddef
+ assert_equal(null_string, Fstring())
+ def Fblob(): blob
+ return null_blob
+ enddef
+ assert_equal(null_blob, Fblob())
+ def Flist(): list<number>
+ return null_list
+ enddef
+ assert_equal(null_list, Flist())
+ def Fdict(): dict<number>
+ return null_dict
+ enddef
+ assert_equal(null_dict, Fdict())
+ def Ffunc(): func(number): number
+ return null_function
+ enddef
+ assert_equal(null_function, Ffunc())
+ if has('channel')
+ def Fchannel(): channel
+ return null_channel
+ enddef
+ assert_equal(null_channel, Fchannel())
+ def Fjob(): job
+ return null_job
+ enddef
+ assert_equal(null_job, Fjob())
+ endif
+ END
+ v9.CheckDefAndScriptSuccess(lines)
+enddef
+
def Test_list_any_type_checked()
var lines =<< trim END
vim9script