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# -*- coding: utf-8 -*-
# :Project: pglast — Test the __main__.py module
# :Created: lun 07 ago 2017 12:50:37 CEST
# :Author: Lele Gaifax <lele@metapensiero.it>
# :License: GNU General Public License version 3 or later
# :Copyright: © 2017, 2018, 2019, 2021, 2022, 2024 Lele Gaifax
#
from contextlib import _RedirectStream, redirect_stdout
from io import StringIO
from os import unlink
from tempfile import NamedTemporaryFile
import pytest
from pglast.__main__ import main
class redirect_stdin(_RedirectStream):
_stream = "stdin"
class UnclosableStream(StringIO):
def close(self):
pass
def test_cli_workhorse():
with StringIO() as output:
with redirect_stdout(output):
with pytest.raises(SystemExit) as status:
main(['-h'])
assert status.value.args[0] == 0
assert 'usage:' in output.getvalue()
with StringIO("Select foo,bar Fron sometable") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
with pytest.raises(SystemExit) as status:
main([])
assert str(status.value.args[0]) == \
'syntax error at or near "sometable", at index 20'
with StringIO("Select foo,bar From sometable Where foo<>0") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main([])
assert output.getvalue() == """\
SELECT foo
, bar
FROM sometable
WHERE foo <> 0
"""
output = NamedTemporaryFile(delete=False)
try:
main(['-S', "select 1", '-', output.name])
with open(output.name) as f:
assert f.read() == "SELECT 1\n"
finally:
try:
unlink(output.name)
except PermissionError:
# This happens under Windows, for some reason the file is still
# in use...
pass
with StringIO("Select 1") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--parse-tree'])
assert "'val': {'@': 'Integer', 'ival': 1}" in output.getvalue()
with StringIO("select a,b,c from st where a='foo'") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--normalize'])
assert output.getvalue() == "SELECT a, b, c FROM st WHERE a = 'foo'\n"
with StringIO("""\
CREATE FUNCTION add (a integer, b integer) RETURNS integer AS $$
BEGIN RETURN a + b; END;
$$ LANGUAGE plpgsql""") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--plpgsql', '--parse-tree'])
assert '"PLpgSQL_function":' in output.getvalue()
with StringIO("Select 1") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main([])
assert output.getvalue() == "SELECT 1\n"
with StringIO("Select 1;") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main([])
assert output.getvalue() == "SELECT 1\n"
with StringIO("Select 1; Select 2") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main([])
assert output.getvalue() == "SELECT 1;\n\nSELECT 2\n"
with StringIO("Select 1; Select 2") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--semicolon-after-last-statement'])
assert output.getvalue() == "SELECT 1;\n\nSELECT 2;\n"
with StringIO("Select 'abcdef'") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--split-string-literals', '0'])
assert output.getvalue() == "SELECT 'abcdef'\n"
with StringIO("Select 'abcdef'") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--split-string-literals', '3'])
assert output.getvalue() == """\
SELECT 'abc'
'def'
"""
with StringIO("Select /* one */ 1") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--preserve-comments'])
assert output.getvalue() == "SELECT /* one */ 1\n"
with StringIO("CREATE TABLESPACE tbl LOCATION 'dir' -- comment") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--preserve-comments'])
assert output.getvalue() == "CREATE TABLESPACE tbl LOCATION 'dir' -- comment\n\n"
with StringIO("""\
select collation for ('abc'),
normalize('abc', nfc),
overlay('Txxxxas' placing 'hom' FROM 2 for 4),
position('bc' in 'abcd'),
trim(both ' abc '),
trim(both '*' from '***abc***'),
trim(leading '*' from '***abc***'),
trim(trailing '*' from '***abc***'),
xmlexists('//town[text() = ''Toronto'']'
passing '<towns><town>Toronto</town><town>Ottawa</town></towns>');
""") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--special-functions', '--compact-lists-margin', '100'])
assert output.getvalue() == """\
SELECT COLLATION FOR ('abc')
, normalize('abc', NFC)
, overlay('Txxxxas' PLACING 'hom' FROM 2 FOR 4)
, position('bc' IN 'abcd')
, trim(BOTH FROM ' abc ')
, trim(BOTH '*' FROM '***abc***')
, trim(LEADING '*' FROM '***abc***')
, trim(TRAILING '*' FROM '***abc***')
, xmlexists('//town[text() = ''Toronto'']'\
PASSING BY REF '<towns><town>Toronto</town><town>Ottawa</town></towns>')
"""
with StringIO("select extract(hour from t1.modtime), count(*) from t1") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--special-functions', '--compact-lists-margin', '120'])
assert output.getvalue() == ("SELECT EXTRACT(HOUR FROM t1.modtime), count(*)\n"
"FROM t1\n")
with StringIO("select extract(hour from t1.modtime), count(*) from t1") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--special-functions', '--compact-lists-margin', '40'])
assert output.getvalue() == ("SELECT EXTRACT(HOUR FROM t1.modtime)\n"
" , count(*)\n"
"FROM t1\n")
with StringIO("select substring('123' from 1 for 2)") as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--special-functions', '--compact-lists-margin', '40'])
assert output.getvalue() == "SELECT substring('123' FROM 1 FOR 2)\n"
in_stmt = """\
select substring('123',2,3),
regexp_split_to_array('x,x,x', ','),
btrim('xxx'), trim('xxx'),
POSITION('hour' in trim(substring('xyz hour ',1,6)))
"""
with StringIO(in_stmt) as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--compact-lists-margin', '100'])
assert output.getvalue() == """\
SELECT substring('123', 2, 3)
, regexp_split_to_array('x,x,x', ',')
, btrim('xxx')
, pg_catalog.btrim('xxx')
, pg_catalog.position(pg_catalog.btrim(substring('xyz hour ', 1, 6)), 'hour')
"""
with StringIO(in_stmt) as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--remove-pg_catalog-from-functions', '--compact-lists-margin', '100'])
assert output.getvalue() == """\
SELECT substring('123', 2, 3)
, regexp_split_to_array('x,x,x', ',')
, btrim('xxx')
, btrim('xxx')
, pg_catalog.position(btrim(substring('xyz hour ', 1, 6)), 'hour')
"""
with StringIO('SELECT NULLIF(1, 0)') as input:
with UnclosableStream() as output:
with redirect_stdin(input), redirect_stdout(output):
main(['--remove-pg_catalog-from-functions'])
assert output.getvalue() == "SELECT NULLIF(1, 0)\n"
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