forked from alangpierce/tinyquery
/
compiler_test.py
594 lines (564 loc) · 23.7 KB
/
compiler_test.py
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import collections
import unittest
import compiler
import context
import runtime
import tinyquery
import tq_types
import type_context
import typed_ast
class CompilerTest(unittest.TestCase):
def setUp(self):
self.table1 = tinyquery.Table(
'table1',
0,
collections.OrderedDict([
('value', context.Column(tq_types.INT, [])),
('value2', context.Column(tq_types.INT, []))
]))
self.table1_type_ctx = self.make_type_context(
[('table1', 'value', tq_types.INT),
('table1', 'value2', tq_types.INT)]
)
self.table2 = tinyquery.Table(
'table2',
0,
collections.OrderedDict([
('value', context.Column(tq_types.INT, [])),
('value3', context.Column(tq_types.INT, []))
])
)
self.table2_type_ctx = self.make_type_context(
[('table2', 'value', tq_types.INT),
('table2', 'value3', tq_types.INT)]
)
self.tables_by_name = {
'table1': self.table1,
'table2': self.table2
}
def assert_compiled_select(self, text, expected_ast):
ast = compiler.compile_text(text, self.tables_by_name)
self.assertEqual(expected_ast, ast)
def assert_compile_error(self, text):
self.assertRaises(compiler.CompileError, compiler.compile_text,
text, self.tables_by_name)
def make_type_context(self, table_column_type_triples,
implicit_column_context=None):
return type_context.TypeContext.from_full_columns(
collections.OrderedDict(
((table, column), col_type)
for table, column, col_type in table_column_type_triples
), implicit_column_context)
def test_compile_simple_select(self):
self.assert_compiled_select(
'SELECT value FROM table1',
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'value')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'value', tq_types.INT)],
self.make_type_context([('table1', 'value', tq_types.INT)])
))
)
def test_unary_operator(self):
self.assert_compiled_select(
'SELECT -5',
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_unary_op('-'),
[typed_ast.Literal(5, tq_types.INT)],
tq_types.INT),
'f0_'
)],
typed_ast.NoTable(),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'f0_', tq_types.INT)],
self.make_type_context([]))
)
)
def test_function_calls(self):
self.assert_compiled_select(
'SELECT ABS(-3), POW(2, 3), NOW()',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_func('abs'),
[typed_ast.FunctionCall(
runtime.get_unary_op('-'),
[typed_ast.Literal(3, tq_types.INT)],
tq_types.INT
)],
tq_types.INT),
'f0_'),
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_func('pow'), [
typed_ast.Literal(2, tq_types.INT),
typed_ast.Literal(3, tq_types.INT)],
tq_types.INT
),
'f1_'
),
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_func('now'), [], tq_types.INT
),
'f2_'
)],
typed_ast.NoTable(),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context([
(None, 'f0_', tq_types.INT), (None, 'f1_', tq_types.INT),
(None, 'f2_', tq_types.INT)],
self.make_type_context([]))
)
)
def test_where(self):
self.assert_compiled_select(
'SELECT value FROM table1 WHERE value > 3',
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'value')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.FunctionCall(
runtime.get_binary_op('>'),
[typed_ast.ColumnRef('table1', 'value', tq_types.INT),
typed_ast.Literal(3, tq_types.INT)],
tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'value', tq_types.INT)],
self.make_type_context(
[('table1', 'value', tq_types.INT)]))
)
)
def test_multiple_select(self):
self.assert_compiled_select(
'SELECT value * 3 AS foo, value, value + 1, value bar, value - 1 '
'FROM table1',
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_binary_op('*'),
[typed_ast.ColumnRef('table1', 'value', tq_types.INT),
typed_ast.Literal(3, tq_types.INT)],
tq_types.INT),
'foo'),
typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'value'),
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_binary_op('+'),
[typed_ast.ColumnRef('table1', 'value', tq_types.INT),
typed_ast.Literal(1, tq_types.INT)],
tq_types.INT),
'f0_'),
typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'bar'),
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_binary_op('-'),
[typed_ast.ColumnRef('table1', 'value', tq_types.INT),
typed_ast.Literal(1, tq_types.INT)],
tq_types.INT),
'f1_')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context([
(None, 'foo', tq_types.INT),
(None, 'value', tq_types.INT),
(None, 'f0_', tq_types.INT), (None, 'bar', tq_types.INT),
(None, 'f1_', tq_types.INT)],
self.make_type_context(
[('table1', 'value', tq_types.INT)]
))
)
)
def test_duplicate_aliases_not_allowed(self):
self.assert_compile_error(
'SELECT 0 AS foo, value foo FROM table1')
def test_aggregates(self):
self.assert_compiled_select(
'SELECT MAX(value), MIN(value) FROM table1',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.AggregateFunctionCall(
runtime.get_func('max'),
[typed_ast.ColumnRef('table1', 'value', tq_types.INT)],
tq_types.INT
),
'f0_'),
typed_ast.SelectField(
typed_ast.AggregateFunctionCall(
runtime.get_func('min'),
[typed_ast.ColumnRef('table1', 'value', tq_types.INT)],
tq_types.INT
),
'f1_')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
typed_ast.GroupSet(set(), []),
None,
self.make_type_context([
(None, 'f0_', tq_types.INT),
(None, 'f1_', tq_types.INT)],
self.make_type_context([]))))
def mixed_aggregate_non_aggregate_not_allowed(self):
self.assert_compile_error(
'SELECT value, SUM(value) FROM table1')
def mixed_aggregate_non_aggregate_single_field_not_allowed(self):
self.assert_compile_error(
'SELECT value + SUM(value) FROM table1')
def test_group_by_alias(self):
self.assert_compiled_select(
'SELECT 0 AS foo FROM table1 GROUP BY foo',
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.Literal(0, tq_types.INT), 'foo')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
typed_ast.GroupSet(
alias_groups={'foo'},
field_groups=[]
),
None,
self.make_type_context(
[(None, 'foo', tq_types.INT)],
self.make_type_context([]))
)
)
def test_group_by_field(self):
self.assert_compiled_select(
'SELECT SUM(value) FROM table1 GROUP BY value2',
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_func('sum'),
[typed_ast.ColumnRef('table1', 'value', tq_types.INT)],
tq_types.INT
),
'f0_')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
typed_ast.GroupSet(
alias_groups=set(),
field_groups=[
typed_ast.ColumnRef('table1', 'value2', tq_types.INT)]
),
None,
self.make_type_context(
[(None, 'f0_', tq_types.INT)],
self.make_type_context([]))
))
def test_select_grouped_and_non_grouped_fields(self):
self.assert_compiled_select(
'SELECT value, SUM(value2) FROM table1 GROUP BY value',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'value'),
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_func('sum'),
[typed_ast.ColumnRef('table1', 'value2',
tq_types.INT)],
tq_types.INT),
'f0_')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
typed_ast.GroupSet(
alias_groups={'value'},
field_groups=[]
),
None,
self.make_type_context(
[(None, 'value', tq_types.INT),
(None, 'f0_', tq_types.INT)],
self.make_type_context(
[('table1', 'value', tq_types.INT)]))
)
)
def test_grouped_fields_require_aggregates(self):
self.assert_compile_error(
'SELECT value + 1 AS foo, foo FROM table1 GROUP BY foo')
def test_select_multiple_tables(self):
# Union of columns should be taken, with no aliases.
unioned_type_ctx = self.make_type_context(
[(None, 'value', tq_types.INT), (None, 'value2', tq_types.INT),
(None, 'value3', tq_types.INT)])
self.assert_compiled_select(
'SELECT value, value2, value3 FROM table1, table2',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef(None, 'value', tq_types.INT),
'value'),
typed_ast.SelectField(
typed_ast.ColumnRef(None, 'value2', tq_types.INT),
'value2'),
typed_ast.SelectField(
typed_ast.ColumnRef(None, 'value3', tq_types.INT),
'value3')],
typed_ast.TableUnion([
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Table('table2', self.table2_type_ctx)],
unioned_type_ctx
),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'value', tq_types.INT),
(None, 'value2', tq_types.INT),
(None, 'value3', tq_types.INT)],
self.make_type_context(
[(None, 'value', tq_types.INT),
(None, 'value2', tq_types.INT),
(None, 'value3', tq_types.INT)]))
)
)
def test_subquery(self):
self.assert_compiled_select(
'SELECT foo, foo + 1 FROM (SELECT value + 1 AS foo FROM table1)',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef(None, 'foo', tq_types.INT), 'foo'),
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_binary_op('+'), [
typed_ast.ColumnRef(None, 'foo', tq_types.INT),
typed_ast.Literal(1, tq_types.INT)],
tq_types.INT),
'f0_'
)],
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_binary_op('+'), [
typed_ast.ColumnRef('table1', 'value',
tq_types.INT),
typed_ast.Literal(1, tq_types.INT)],
tq_types.INT),
'foo'
)],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'foo', tq_types.INT)],
self.make_type_context(
[('table1', 'value', tq_types.INT)]
))
),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'foo', tq_types.INT), (None, 'f0_', tq_types.INT)],
self.make_type_context([(None, 'foo', tq_types.INT)]))
)
)
def test_table_aliases(self):
self.assert_compiled_select(
'SELECT t.value FROM table1 t',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef('t', 'value', tq_types.INT),
't.value')],
typed_ast.Table('table1', self.make_type_context(
[('t', 'value', tq_types.INT),
('t', 'value2', tq_types.INT)])),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 't.value', tq_types.INT)],
self.make_type_context(
[('t', 'value', tq_types.INT)]
))
)
)
def test_implicitly_accessed_column(self):
self.assert_compiled_select(
'SELECT table1.value FROM (SELECT value + 1 AS foo FROM table1)',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'table1.value')],
typed_ast.Select([
typed_ast.SelectField(
typed_ast.FunctionCall(
runtime.get_binary_op('+'), [
typed_ast.ColumnRef('table1', 'value',
tq_types.INT),
typed_ast.Literal(1, tq_types.INT)
],
tq_types.INT
),
'foo')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'foo', tq_types.INT)],
self.make_type_context(
[('table1', 'value', tq_types.INT)]))),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'table1.value', tq_types.INT)],
self.make_type_context(
[('table1', 'value', tq_types.INT)]
)))
)
def test_subquery_aliases(self):
self.assert_compiled_select(
'SELECT t.value FROM (SELECT value FROM table1) t',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef('t', 'value', tq_types.INT),
't.value')],
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'value')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'value', tq_types.INT)],
self.make_type_context(
[('t', 'value', tq_types.INT)]))
),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 't.value', tq_types.INT)],
self.make_type_context(
[('t', 'value', tq_types.INT)]))
)
)
def test_simple_join(self):
self.assert_compiled_select(
'SELECT value2 '
'FROM table1 t1 JOIN table2 t2 ON t1.value = t2.value',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef('t1', 'value2', tq_types.INT),
'value2'
)],
typed_ast.Join(
typed_ast.Table('table1',
self.make_type_context([
('t1', 'value', tq_types.INT),
('t1', 'value2', tq_types.INT),
])),
typed_ast.Table('table2',
self.make_type_context([
('t2', 'value', tq_types.INT),
('t2', 'value3', tq_types.INT),
])),
[typed_ast.JoinFields(
typed_ast.ColumnRef('t1', 'value', tq_types.INT),
typed_ast.ColumnRef('t2', 'value', tq_types.INT)
)],
False,
self.make_type_context([
('t1', 'value', tq_types.INT),
('t1', 'value2', tq_types.INT),
('t2', 'value', tq_types.INT),
('t2', 'value3', tq_types.INT),
])
),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'value2', tq_types.INT)],
self.make_type_context([('t1', 'value2', tq_types.INT)])
)
)
)
def test_join_multiple_fields(self):
self.assert_compiled_select(
'SELECT 0 '
'FROM table1 t1 JOIN table2 t2 '
'ON t1.value = t2.value AND t2.value3 = t1.value2',
typed_ast.Select(
[typed_ast.SelectField(
typed_ast.Literal(0, tq_types.INT), 'f0_')],
typed_ast.Join(
typed_ast.Table('table1',
self.make_type_context([
('t1', 'value', tq_types.INT),
('t1', 'value2', tq_types.INT),
])),
typed_ast.Table('table2',
self.make_type_context([
('t2', 'value', tq_types.INT),
('t2', 'value3', tq_types.INT),
])),
[typed_ast.JoinFields(
typed_ast.ColumnRef('t1', 'value', tq_types.INT),
typed_ast.ColumnRef('t2', 'value', tq_types.INT)
), typed_ast.JoinFields(
typed_ast.ColumnRef('t1', 'value2', tq_types.INT),
typed_ast.ColumnRef('t2', 'value3', tq_types.INT)
)],
False,
self.make_type_context([
('t1', 'value', tq_types.INT),
('t1', 'value2', tq_types.INT),
('t2', 'value', tq_types.INT),
('t2', 'value3', tq_types.INT),
])
),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context(
[(None, 'f0_', tq_types.INT)],
self.make_type_context([]))
)
)
def test_select_star(self):
self.assert_compiled_select(
'SELECT * FROM table1',
typed_ast.Select([
typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value', tq_types.INT),
'value'),
typed_ast.SelectField(
typed_ast.ColumnRef('table1', 'value2', tq_types.INT),
'value2')],
typed_ast.Table('table1', self.table1_type_ctx),
typed_ast.Literal(True, tq_types.BOOL),
None,
None,
self.make_type_context([
(None, 'value', tq_types.INT),
(None, 'value2', tq_types.INT)],
self.make_type_context([
('table1', 'value', tq_types.INT),
('table1', 'value2', tq_types.INT)]))))