1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
# type: ignore
import pytest
from mycli.packages.parseutils import (
extract_tables,
extract_tables_from_complete_statements,
is_destructive,
is_dropping_database,
queries_start_with,
query_has_where_clause,
query_starts_with,
)
def test_empty_string():
tables = extract_tables("")
assert tables == []
def test_simple_select_single_table():
tables = extract_tables("select * from abc")
assert tables == [(None, "abc", None)]
def test_simple_select_single_table_schema_qualified():
tables = extract_tables("select * from abc.def")
assert tables == [("abc", "def", None)]
def test_simple_select_multiple_tables():
tables = extract_tables("select * from abc, def")
assert sorted(tables) == [(None, "abc", None), (None, "def", None)]
def test_simple_select_multiple_tables_schema_qualified():
tables = extract_tables("select * from abc.def, ghi.jkl")
assert sorted(tables) == [("abc", "def", None), ("ghi", "jkl", None)]
def test_simple_select_with_cols_single_table():
tables = extract_tables("select a,b from abc")
assert tables == [(None, "abc", None)]
def test_simple_select_with_cols_single_table_schema_qualified():
tables = extract_tables("select a,b from abc.def")
assert tables == [("abc", "def", None)]
def test_simple_select_with_cols_multiple_tables():
tables = extract_tables("select a,b from abc, def")
assert sorted(tables) == [(None, "abc", None), (None, "def", None)]
def test_simple_select_with_cols_multiple_tables_with_schema():
tables = extract_tables("select a,b from abc.def, def.ghi")
assert sorted(tables) == [("abc", "def", None), ("def", "ghi", None)]
def test_select_with_hanging_comma_single_table():
tables = extract_tables("select a, from abc")
assert tables == [(None, "abc", None)]
def test_select_with_hanging_comma_multiple_tables():
tables = extract_tables("select a, from abc, def")
assert sorted(tables) == [(None, "abc", None), (None, "def", None)]
def test_select_with_hanging_period_multiple_tables():
tables = extract_tables("SELECT t1. FROM tabl1 t1, tabl2 t2")
assert sorted(tables) == [(None, "tabl1", "t1"), (None, "tabl2", "t2")]
def test_simple_insert_single_table():
tables = extract_tables('insert into abc (id, name) values (1, "def")')
# sqlparse mistakenly assigns an alias to the table
# assert tables == [(None, 'abc', None)]
assert tables == [(None, "abc", "abc")]
def test_simple_insert_single_table_schema_qualified():
tables = extract_tables('insert into abc.def (id, name) values (1, "def")')
assert tables == [("abc", "def", None)]
def test_simple_update_table():
tables = extract_tables("update abc set id = 1")
assert tables == [(None, "abc", None)]
def test_simple_update_table_with_schema():
tables = extract_tables("update abc.def set id = 1")
assert tables == [("abc", "def", None)]
def test_join_table():
tables = extract_tables("SELECT * FROM abc a JOIN def d ON a.id = d.num")
assert sorted(tables) == [(None, "abc", "a"), (None, "def", "d")]
def test_join_table_schema_qualified():
tables = extract_tables("SELECT * FROM abc.def x JOIN ghi.jkl y ON x.id = y.num")
assert tables == [("abc", "def", "x"), ("ghi", "jkl", "y")]
def test_join_as_table():
tables = extract_tables("SELECT * FROM my_table AS m WHERE m.a > 5")
assert tables == [(None, "my_table", "m")]
def test_extract_tables_from_complete_statements():
tables = extract_tables_from_complete_statements("SELECT * FROM my_table AS m WHERE m.a > 5")
assert tables == [(None, "my_table", "m")]
def test_extract_tables_from_complete_statements_cte():
tables = extract_tables_from_complete_statements("WITH my_cte (id, num) AS ( SELECT id, COUNT(1) FROM my_table GROUP BY id ) SELECT *")
assert tables == [(None, "my_table", None)]
# this would confuse plain extract_tables() per #1122
def test_extract_tables_from_multiple_complete_statements():
tables = extract_tables_from_complete_statements(r'\T sql-insert; SELECT * FROM my_table AS m WHERE m.a > 5')
assert tables == [(None, "my_table", "m")]
def test_query_starts_with():
query = "USE test;"
assert query_starts_with(query, ("use",)) is True
query = "DROP DATABASE test;"
assert query_starts_with(query, ("use",)) is False
def test_query_starts_with_comment():
query = "# comment\nUSE test;"
assert query_starts_with(query, ("use",)) is True
def test_queries_start_with():
sql = "# comment\nshow databases;use foo;"
assert queries_start_with(sql, ["show", "select"]) is True
assert queries_start_with(sql, ["use", "drop"]) is True
assert queries_start_with(sql, ["delete", "update"]) is False
def test_is_destructive():
sql = "use test;\nshow databases;\ndrop database foo;"
assert is_destructive(sql) is True
def test_is_destructive_update_with_where_clause():
sql = "use test;\nshow databases;\nUPDATE test SET x = 1 WHERE id = 1;"
assert is_destructive(sql) is False
def test_is_destructive_update_without_where_clause():
sql = "use test;\nshow databases;\nUPDATE test SET x = 1;"
assert is_destructive(sql) is True
@pytest.mark.parametrize(
("sql", "has_where_clause"),
[
("update test set dummy = 1;", False),
("update test set dummy = 1 where id = 1);", True),
],
)
def test_query_has_where_clause(sql, has_where_clause):
assert query_has_where_clause(sql) is has_where_clause
@pytest.mark.parametrize(
("sql", "dbname", "is_dropping"),
[
("select bar from foo", "foo", False),
('drop database "foo";', "`foo`", True),
("drop schema foo", "foo", True),
("drop schema foo", "bar", False),
("drop database bar", "foo", False),
("drop database foo", None, False),
("drop database foo; create database foo", "foo", False),
("drop database foo; create database bar", "foo", True),
("select bar from foo; drop database bazz", "foo", False),
("select bar from foo; drop database bazz", "bazz", True),
("-- dropping database \n drop -- really dropping \n schema abc -- now it is dropped", "abc", True),
],
)
def test_is_dropping_database(sql, dbname, is_dropping):
assert is_dropping_database(sql, dbname) == is_dropping
|
