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-rw-r--r--test/test_parseutils.py190
1 files changed, 190 insertions, 0 deletions
diff --git a/test/test_parseutils.py b/test/test_parseutils.py
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+++ b/test/test_parseutils.py
@@ -0,0 +1,190 @@
+import pytest
+from mycli.packages.parseutils import (
+ extract_tables, query_starts_with, queries_start_with, is_destructive, query_has_where_clause,
+ is_dropping_database)
+
+
+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')]
+
+
+@pytest.mark.xfail
+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_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\n'
+ 'show 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;\n'
+ 'show databases;\n'
+ 'drop database foo;'
+ )
+ assert is_destructive(sql) is True
+
+
+def test_is_destructive_update_with_where_clause():
+ sql = (
+ 'use test;\n'
+ 'show databases;\n'
+ 'UPDATE test SET x = 1 WHERE id = 1;'
+ )
+ assert is_destructive(sql) is False
+
+
+def test_is_destructive_update_without_where_clause():
+ sql = (
+ 'use test;\n'
+ 'show databases;\n'
+ 'UPDATE 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