def test_var_pattern_handles_empty_sql_string_literals():
"""Make sure SQL '' are treated correctly and don't cause a substitution to be skipped."""
sql = r"""
select blah
from foo
where lower(regexp_replace(blah,'\\W','','g')) = lower(regexp_replace(:blah,'\\W','','g'));"""
groupdicts = [m.groupdict() for m in var_pattern.finditer(sql)]
expected_single_quote_match = {
"dblquote": None,
"lead": None,
"quote": "''",
"trail": None,
"var_name": None,
}
assert groupdicts[1] == expected_single_quote_match
expected_var_match = {
"dblquote": None,
"lead": "(",
"quote": None,
"trail": ",",
"var_name": "blah",
}
assert groupdicts[3] == expected_var_match
def test_var_pattern_is_quote_aware():
sql = """
select foo_id,
bar_id,
to_char(created_at, 'YYYY-MM-DD"T"HH24:MI:SSOF')
from foos
join bars using(bar_id)
join bazs using(baz_id)
where created_at < :created_at_mark
and foo_mark > :foo_mark
order by created_at desc, source_name asc;
"""
groupdicts = [m.groupdict() for m in var_pattern.finditer(sql)]
assert len(groupdicts) == 3
expected = [
{
"dblquote": None,
"lead": None,
"quote": "'YYYY-MM-DD\"T\"HH24:MI:SSOF'",
"trail": None,
"var_name": None,
},
{
"dblquote": None,
"lead": " ",
"quote": None,
"trail": "\n",
"var_name": "created_at_mark",
},
{"dblquote": None, "lead": " ", "quote": None, "trail": "\n", "var_name": "foo_mark"},
]
assert groupdicts == expected
def test_var_pattern_does_not_require_semicolon_trail():
"""Make sure keywords ending queries are recognized even without
semi-colons.
"""
sql = """
select a,
b,
c
FROM foo
WHERE a = :a"""
groupdicts = [m.groupdict() for m in var_pattern.finditer(sql)]
assert len(groupdicts) == 1
expected = {"dblquote": None, "lead": " ", "quote": None, "trail": "", "var_name": "a"}
assert groupdicts[0] == expected
