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patch 8.2.4576: Vim9: error for comparing with null can be annoying

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Problem:    Vim9: error for comparing with null can be annoying.
Solution:   Allow comparing anything with null. (closes #9948)
This commit is contained in:
Bram Moolenaar
2022-03-15 20:21:33 +00:00
parent 139575de66
commit 056678184f
4 changed files with 36 additions and 30 deletions
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39
src/testdir/test_vim9_expr.vim
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@@ -716,6 +716,35 @@ def Test_expr4_compare_null()
g:null_dict = test_null_dict()
g:not_null_list = []
var lines =<< trim END
assert_false(true == null)
assert_false(false == null)
assert_false(null == true)
assert_false(null == false)
assert_true(true != null)
assert_true(false != null)
assert_true(null != true)
assert_true(null != false)
assert_false(123 == null)
assert_false(0 == null)
assert_false(null == 123)
assert_false(null == 0)
assert_true(123 != null)
assert_true(0 != null)
assert_true(null != 123)
assert_true(null != 0)
if has('float')
assert_false(12.3 == null)
assert_false(0.0 == null)
assert_false(null == 12.3)
assert_false(null == 0.0)
assert_true(12.3 != null)
assert_true(0.0 != null)
assert_true(null != 12.3)
assert_true(null != 0.0)
endif
assert_true(test_null_blob() == v:null)
assert_true(null_blob == null)
assert_true(v:null == test_null_blob())
@@ -818,16 +847,6 @@ def Test_expr4_compare_null()
assert_equal(null_function, d.f)
END
v9.CheckDefAndScriptSuccess(lines)
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')
enddef
def Test_expr4_compare_none()