174 lines
5.5 KiB
Python
174 lines
5.5 KiB
Python
import pytest
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from mycli.packages.parseutils import (
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extract_tables,
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query_starts_with,
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queries_start_with,
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is_destructive,
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query_has_where_clause,
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is_dropping_database,
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)
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def test_empty_string():
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tables = extract_tables("")
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assert tables == []
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def test_simple_select_single_table():
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tables = extract_tables("select * from abc")
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assert tables == [(None, "abc", None)]
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def test_simple_select_single_table_schema_qualified():
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tables = extract_tables("select * from abc.def")
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assert tables == [("abc", "def", None)]
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def test_simple_select_multiple_tables():
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tables = extract_tables("select * from abc, def")
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assert sorted(tables) == [(None, "abc", None), (None, "def", None)]
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def test_simple_select_multiple_tables_schema_qualified():
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tables = extract_tables("select * from abc.def, ghi.jkl")
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assert sorted(tables) == [("abc", "def", None), ("ghi", "jkl", None)]
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def test_simple_select_with_cols_single_table():
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tables = extract_tables("select a,b from abc")
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assert tables == [(None, "abc", None)]
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def test_simple_select_with_cols_single_table_schema_qualified():
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tables = extract_tables("select a,b from abc.def")
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assert tables == [("abc", "def", None)]
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def test_simple_select_with_cols_multiple_tables():
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tables = extract_tables("select a,b from abc, def")
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assert sorted(tables) == [(None, "abc", None), (None, "def", None)]
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def test_simple_select_with_cols_multiple_tables_with_schema():
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tables = extract_tables("select a,b from abc.def, def.ghi")
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assert sorted(tables) == [("abc", "def", None), ("def", "ghi", None)]
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def test_select_with_hanging_comma_single_table():
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tables = extract_tables("select a, from abc")
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assert tables == [(None, "abc", None)]
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def test_select_with_hanging_comma_multiple_tables():
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tables = extract_tables("select a, from abc, def")
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assert sorted(tables) == [(None, "abc", None), (None, "def", None)]
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def test_select_with_hanging_period_multiple_tables():
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tables = extract_tables("SELECT t1. FROM tabl1 t1, tabl2 t2")
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assert sorted(tables) == [(None, "tabl1", "t1"), (None, "tabl2", "t2")]
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def test_simple_insert_single_table():
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tables = extract_tables('insert into abc (id, name) values (1, "def")')
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# sqlparse mistakenly assigns an alias to the table
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# assert tables == [(None, 'abc', None)]
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assert tables == [(None, "abc", "abc")]
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@pytest.mark.xfail
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def test_simple_insert_single_table_schema_qualified():
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tables = extract_tables('insert into abc.def (id, name) values (1, "def")')
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assert tables == [("abc", "def", None)]
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def test_simple_update_table():
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tables = extract_tables("update abc set id = 1")
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assert tables == [(None, "abc", None)]
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def test_simple_update_table_with_schema():
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tables = extract_tables("update abc.def set id = 1")
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assert tables == [("abc", "def", None)]
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def test_join_table():
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tables = extract_tables("SELECT * FROM abc a JOIN def d ON a.id = d.num")
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assert sorted(tables) == [(None, "abc", "a"), (None, "def", "d")]
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def test_join_table_schema_qualified():
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tables = extract_tables("SELECT * FROM abc.def x JOIN ghi.jkl y ON x.id = y.num")
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assert tables == [("abc", "def", "x"), ("ghi", "jkl", "y")]
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def test_join_as_table():
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tables = extract_tables("SELECT * FROM my_table AS m WHERE m.a > 5")
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assert tables == [(None, "my_table", "m")]
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def test_query_starts_with():
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query = "USE test;"
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assert query_starts_with(query, ("use",)) is True
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query = "DROP DATABASE test;"
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assert query_starts_with(query, ("use",)) is False
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def test_query_starts_with_comment():
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query = "# comment\nUSE test;"
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assert query_starts_with(query, ("use",)) is True
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def test_queries_start_with():
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sql = "# comment\n" "show databases;" "use foo;"
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assert queries_start_with(sql, ("show", "select")) is True
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assert queries_start_with(sql, ("use", "drop")) is True
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assert queries_start_with(sql, ("delete", "update")) is False
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def test_is_destructive():
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sql = "use test;\n" "show databases;\n" "drop database foo;"
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assert is_destructive(sql) is True
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def test_is_destructive_update_with_where_clause():
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sql = "use test;\n" "show databases;\n" "UPDATE test SET x = 1 WHERE id = 1;"
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assert is_destructive(sql) is False
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def test_is_destructive_update_without_where_clause():
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sql = "use test;\n" "show databases;\n" "UPDATE test SET x = 1;"
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assert is_destructive(sql) is True
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@pytest.mark.parametrize(
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("sql", "has_where_clause"),
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[
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("update test set dummy = 1;", False),
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("update test set dummy = 1 where id = 1);", True),
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],
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)
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def test_query_has_where_clause(sql, has_where_clause):
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assert query_has_where_clause(sql) is has_where_clause
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@pytest.mark.parametrize(
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("sql", "dbname", "is_dropping"),
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[
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("select bar from foo", "foo", False),
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('drop database "foo";', "`foo`", True),
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("drop schema foo", "foo", True),
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("drop schema foo", "bar", False),
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("drop database bar", "foo", False),
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("drop database foo", None, False),
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("drop database foo; create database foo", "foo", False),
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("drop database foo; create database bar", "foo", True),
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("select bar from foo; drop database bazz", "foo", False),
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("select bar from foo; drop database bazz", "bazz", True),
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("-- dropping database \n " "drop -- really dropping \n " "schema abc -- now it is dropped", "abc", True),
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],
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)
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def test_is_dropping_database(sql, dbname, is_dropping):
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assert is_dropping_database(sql, dbname) == is_dropping
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