diff options
Diffstat (limited to 'test/test_parseutils.py')
| -rw-r--r-- | test/test_parseutils.py | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/test/test_parseutils.py b/test/test_parseutils.py new file mode 100644 index 0000000..920a08d --- /dev/null +++ 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 |