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patch 8.2.4487: Vim9: cannot compare with v:null

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Problem:    Vim9: cannot compare with v:null.
Solution:   Allow comparing anything with v:null. (closes #9866)
This commit is contained in:
Bram Moolenaar
2022-03-01 19:23:24 +00:00
parent f01af9c4e6
commit 7a22224875
9 changed files with 188 additions and 19 deletions
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75
src/testdir/test_vim9_expr.vim
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@@ -712,6 +712,81 @@ def Test_expr4_equal()
unlet g:notReached
enddef
def Test_expr4_compare_null()
g:null_dict = test_null_dict()
g:not_null_list = []
var lines =<< trim END
assert_true(test_null_blob() == v:null)
assert_true(v:null == test_null_blob())
assert_false(test_null_blob() != v:null)
assert_false(v:null != test_null_blob())
if has('channel')
assert_true(test_null_channel() == v:null)
assert_true(v:null == test_null_channel())
assert_false(test_null_channel() != v:null)
assert_false(v:null != test_null_channel())
endif
assert_true(test_null_dict() == v:null)
assert_true(v:null == test_null_dict())
assert_false(test_null_dict() != v:null)
assert_false(v:null != test_null_dict())
assert_true(g:null_dict == v:null)
assert_true(v:null == g:null_dict)
assert_false(g:null_dict != v:null)
assert_false(v:null != g:null_dict)
assert_true(test_null_function() == v:null)
assert_true(v:null == test_null_function())
assert_false(test_null_function() != v:null)
assert_false(v:null != test_null_function())
if has('job')
assert_true(test_null_job() == v:null)
assert_true(v:null == test_null_job())
assert_false(test_null_job() != v:null)
assert_false(v:null != test_null_job())
endif
assert_true(test_null_list() == v:null)
assert_true(v:null == test_null_list())
assert_false(test_null_list() != v:null)
assert_false(v:null != test_null_list())
assert_false(g:not_null_list == v:null)
assert_false(v:null == g:not_null_list)
assert_true(g:not_null_list != v:null)
assert_true(v:null != g:not_null_list)
assert_true(test_null_partial() == v:null)
assert_true(v:null == test_null_partial())
assert_false(test_null_partial() != v:null)
assert_false(v:null != test_null_partial())
assert_true(test_null_string() == v:null)
assert_true(v:null == test_null_string())
assert_false(test_null_string() != v:null)
assert_false(v:null != test_null_string())
END
v9.CheckDefAndScriptSuccess(lines)
unlet g:null_dict
unlet g:not_null_list
v9.CheckDefAndScriptFailure(['echo 123 == v:null'], 'E1072: Cannot compare number with special')
v9.CheckDefAndScriptFailure(['echo v:null == 123'], 'E1072: Cannot compare special with number')
v9.CheckDefAndScriptFailure(['echo 123 != v:null'], 'E1072: Cannot compare number with special')
v9.CheckDefAndScriptFailure(['echo v:null != 123'], 'E1072: Cannot compare special with number')
v9.CheckDefAndScriptFailure(['echo true == v:null'], 'E1072: Cannot compare bool with special')
v9.CheckDefAndScriptFailure(['echo v:null == true'], 'E1072: Cannot compare special with bool')
v9.CheckDefAndScriptFailure(['echo true != v:null'], 'E1072: Cannot compare bool with special')
v9.CheckDefAndScriptFailure(['echo v:null != true'], 'E1072: Cannot compare special with bool')
v9.CheckDefAndScriptFailure(['echo false == v:null'], 'E1072: Cannot compare bool with special')
v9.CheckDefExecAndScriptFailure(['echo [] == v:none'], ['E1072: Cannot compare list with special', 'E691: Can only compare List with List'])
enddef
def Test_expr4_wrong_type()
for op in ['>', '>=', '<', '<=', '=~', '!~']
v9.CheckDefExecAndScriptFailure([