mirror of https://github.com/django/django.git
275 lines
12 KiB
Python
275 lines
12 KiB
Python
from django.db import connection
|
|
from django.db.backends.ddl_references import (
|
|
Columns, Expressions, ForeignKeyName, IndexName, Statement, Table,
|
|
)
|
|
from django.db.models import ExpressionList, F
|
|
from django.db.models.functions import Upper
|
|
from django.db.models.indexes import IndexExpression
|
|
from django.db.models.sql import Query
|
|
from django.test import SimpleTestCase, TransactionTestCase
|
|
|
|
from .models import Person
|
|
|
|
|
|
class TableTests(SimpleTestCase):
|
|
def setUp(self):
|
|
self.reference = Table('table', lambda table: table.upper())
|
|
|
|
def test_references_table(self):
|
|
self.assertIs(self.reference.references_table('table'), True)
|
|
self.assertIs(self.reference.references_table('other'), False)
|
|
|
|
def test_rename_table_references(self):
|
|
self.reference.rename_table_references('other', 'table')
|
|
self.assertIs(self.reference.references_table('table'), True)
|
|
self.assertIs(self.reference.references_table('other'), False)
|
|
self.reference.rename_table_references('table', 'other')
|
|
self.assertIs(self.reference.references_table('table'), False)
|
|
self.assertIs(self.reference.references_table('other'), True)
|
|
|
|
def test_repr(self):
|
|
self.assertEqual(repr(self.reference), "<Table 'TABLE'>")
|
|
|
|
def test_str(self):
|
|
self.assertEqual(str(self.reference), 'TABLE')
|
|
|
|
|
|
class ColumnsTests(TableTests):
|
|
def setUp(self):
|
|
self.reference = Columns(
|
|
'table', ['first_column', 'second_column'], lambda column: column.upper()
|
|
)
|
|
|
|
def test_references_column(self):
|
|
self.assertIs(self.reference.references_column('other', 'first_column'), False)
|
|
self.assertIs(self.reference.references_column('table', 'third_column'), False)
|
|
self.assertIs(self.reference.references_column('table', 'first_column'), True)
|
|
|
|
def test_rename_column_references(self):
|
|
self.reference.rename_column_references('other', 'first_column', 'third_column')
|
|
self.assertIs(self.reference.references_column('table', 'first_column'), True)
|
|
self.assertIs(self.reference.references_column('table', 'third_column'), False)
|
|
self.assertIs(self.reference.references_column('other', 'third_column'), False)
|
|
self.reference.rename_column_references('table', 'third_column', 'first_column')
|
|
self.assertIs(self.reference.references_column('table', 'first_column'), True)
|
|
self.assertIs(self.reference.references_column('table', 'third_column'), False)
|
|
self.reference.rename_column_references('table', 'first_column', 'third_column')
|
|
self.assertIs(self.reference.references_column('table', 'first_column'), False)
|
|
self.assertIs(self.reference.references_column('table', 'third_column'), True)
|
|
|
|
def test_repr(self):
|
|
self.assertEqual(repr(self.reference), "<Columns 'FIRST_COLUMN, SECOND_COLUMN'>")
|
|
|
|
def test_str(self):
|
|
self.assertEqual(str(self.reference), 'FIRST_COLUMN, SECOND_COLUMN')
|
|
|
|
|
|
class IndexNameTests(ColumnsTests):
|
|
def setUp(self):
|
|
def create_index_name(table_name, column_names, suffix):
|
|
return ', '.join("%s_%s_%s" % (table_name, column_name, suffix) for column_name in column_names)
|
|
self.reference = IndexName(
|
|
'table', ['first_column', 'second_column'], 'suffix', create_index_name
|
|
)
|
|
|
|
def test_repr(self):
|
|
self.assertEqual(repr(self.reference), "<IndexName 'table_first_column_suffix, table_second_column_suffix'>")
|
|
|
|
def test_str(self):
|
|
self.assertEqual(str(self.reference), 'table_first_column_suffix, table_second_column_suffix')
|
|
|
|
|
|
class ForeignKeyNameTests(IndexNameTests):
|
|
def setUp(self):
|
|
def create_foreign_key_name(table_name, column_names, suffix):
|
|
return ', '.join("%s_%s_%s" % (table_name, column_name, suffix) for column_name in column_names)
|
|
self.reference = ForeignKeyName(
|
|
'table', ['first_column', 'second_column'],
|
|
'to_table', ['to_first_column', 'to_second_column'],
|
|
'%(to_table)s_%(to_column)s_fk',
|
|
create_foreign_key_name,
|
|
)
|
|
|
|
def test_references_table(self):
|
|
super().test_references_table()
|
|
self.assertIs(self.reference.references_table('to_table'), True)
|
|
|
|
def test_references_column(self):
|
|
super().test_references_column()
|
|
self.assertIs(self.reference.references_column('to_table', 'second_column'), False)
|
|
self.assertIs(self.reference.references_column('to_table', 'to_second_column'), True)
|
|
|
|
def test_rename_table_references(self):
|
|
super().test_rename_table_references()
|
|
self.reference.rename_table_references('to_table', 'other_to_table')
|
|
self.assertIs(self.reference.references_table('other_to_table'), True)
|
|
self.assertIs(self.reference.references_table('to_table'), False)
|
|
|
|
def test_rename_column_references(self):
|
|
super().test_rename_column_references()
|
|
self.reference.rename_column_references('to_table', 'second_column', 'third_column')
|
|
self.assertIs(self.reference.references_column('table', 'second_column'), True)
|
|
self.assertIs(self.reference.references_column('to_table', 'to_second_column'), True)
|
|
self.reference.rename_column_references('to_table', 'to_first_column', 'to_third_column')
|
|
self.assertIs(self.reference.references_column('to_table', 'to_first_column'), False)
|
|
self.assertIs(self.reference.references_column('to_table', 'to_third_column'), True)
|
|
|
|
def test_repr(self):
|
|
self.assertEqual(
|
|
repr(self.reference),
|
|
"<ForeignKeyName 'table_first_column_to_table_to_first_column_fk, "
|
|
"table_second_column_to_table_to_first_column_fk'>"
|
|
)
|
|
|
|
def test_str(self):
|
|
self.assertEqual(
|
|
str(self.reference),
|
|
'table_first_column_to_table_to_first_column_fk, '
|
|
'table_second_column_to_table_to_first_column_fk'
|
|
)
|
|
|
|
|
|
class MockReference:
|
|
def __init__(self, representation, referenced_tables, referenced_columns):
|
|
self.representation = representation
|
|
self.referenced_tables = referenced_tables
|
|
self.referenced_columns = referenced_columns
|
|
|
|
def references_table(self, table):
|
|
return table in self.referenced_tables
|
|
|
|
def references_column(self, table, column):
|
|
return (table, column) in self.referenced_columns
|
|
|
|
def rename_table_references(self, old_table, new_table):
|
|
if old_table in self.referenced_tables:
|
|
self.referenced_tables.remove(old_table)
|
|
self.referenced_tables.add(new_table)
|
|
|
|
def rename_column_references(self, table, old_column, new_column):
|
|
column = (table, old_column)
|
|
if column in self.referenced_columns:
|
|
self.referenced_columns.remove(column)
|
|
self.referenced_columns.add((table, new_column))
|
|
|
|
def __str__(self):
|
|
return self.representation
|
|
|
|
|
|
class StatementTests(SimpleTestCase):
|
|
def test_references_table(self):
|
|
statement = Statement('', reference=MockReference('', {'table'}, {}), non_reference='')
|
|
self.assertIs(statement.references_table('table'), True)
|
|
self.assertIs(statement.references_table('other'), False)
|
|
|
|
def test_references_column(self):
|
|
statement = Statement('', reference=MockReference('', {}, {('table', 'column')}), non_reference='')
|
|
self.assertIs(statement.references_column('table', 'column'), True)
|
|
self.assertIs(statement.references_column('other', 'column'), False)
|
|
|
|
def test_rename_table_references(self):
|
|
reference = MockReference('', {'table'}, {})
|
|
statement = Statement('', reference=reference, non_reference='')
|
|
statement.rename_table_references('table', 'other')
|
|
self.assertEqual(reference.referenced_tables, {'other'})
|
|
|
|
def test_rename_column_references(self):
|
|
reference = MockReference('', {}, {('table', 'column')})
|
|
statement = Statement('', reference=reference, non_reference='')
|
|
statement.rename_column_references('table', 'column', 'other')
|
|
self.assertEqual(reference.referenced_columns, {('table', 'other')})
|
|
|
|
def test_repr(self):
|
|
reference = MockReference('reference', {}, {})
|
|
statement = Statement("%(reference)s - %(non_reference)s", reference=reference, non_reference='non_reference')
|
|
self.assertEqual(repr(statement), "<Statement 'reference - non_reference'>")
|
|
|
|
def test_str(self):
|
|
reference = MockReference('reference', {}, {})
|
|
statement = Statement("%(reference)s - %(non_reference)s", reference=reference, non_reference='non_reference')
|
|
self.assertEqual(str(statement), 'reference - non_reference')
|
|
|
|
|
|
class ExpressionsTests(TransactionTestCase):
|
|
available_apps = []
|
|
|
|
def setUp(self):
|
|
compiler = Person.objects.all().query.get_compiler(connection.alias)
|
|
self.editor = connection.schema_editor()
|
|
self.expressions = Expressions(
|
|
table=Person._meta.db_table,
|
|
expressions=ExpressionList(
|
|
IndexExpression(F('first_name')),
|
|
IndexExpression(F('last_name').desc()),
|
|
IndexExpression(Upper('last_name')),
|
|
).resolve_expression(compiler.query),
|
|
compiler=compiler,
|
|
quote_value=self.editor.quote_value,
|
|
)
|
|
|
|
def test_references_table(self):
|
|
self.assertIs(self.expressions.references_table(Person._meta.db_table), True)
|
|
self.assertIs(self.expressions.references_table('other'), False)
|
|
|
|
def test_references_column(self):
|
|
table = Person._meta.db_table
|
|
self.assertIs(self.expressions.references_column(table, 'first_name'), True)
|
|
self.assertIs(self.expressions.references_column(table, 'last_name'), True)
|
|
self.assertIs(self.expressions.references_column(table, 'other'), False)
|
|
|
|
def test_rename_table_references(self):
|
|
table = Person._meta.db_table
|
|
self.expressions.rename_table_references(table, 'other')
|
|
self.assertIs(self.expressions.references_table(table), False)
|
|
self.assertIs(self.expressions.references_table('other'), True)
|
|
self.assertIn(
|
|
'%s.%s' % (
|
|
self.editor.quote_name('other'),
|
|
self.editor.quote_name('first_name'),
|
|
),
|
|
str(self.expressions),
|
|
)
|
|
|
|
def test_rename_table_references_without_alias(self):
|
|
compiler = Query(Person, alias_cols=False).get_compiler(connection=connection)
|
|
table = Person._meta.db_table
|
|
expressions = Expressions(
|
|
table=table,
|
|
expressions=ExpressionList(
|
|
IndexExpression(Upper('last_name')),
|
|
IndexExpression(F('first_name')),
|
|
).resolve_expression(compiler.query),
|
|
compiler=compiler,
|
|
quote_value=self.editor.quote_value,
|
|
)
|
|
expressions.rename_table_references(table, 'other')
|
|
self.assertIs(expressions.references_table(table), False)
|
|
self.assertIs(expressions.references_table('other'), True)
|
|
expected_str = '(UPPER(%s)), %s' % (
|
|
self.editor.quote_name('last_name'),
|
|
self.editor.quote_name('first_name'),
|
|
)
|
|
self.assertEqual(str(expressions), expected_str)
|
|
|
|
def test_rename_column_references(self):
|
|
table = Person._meta.db_table
|
|
self.expressions.rename_column_references(table, 'first_name', 'other')
|
|
self.assertIs(self.expressions.references_column(table, 'other'), True)
|
|
self.assertIs(self.expressions.references_column(table, 'first_name'), False)
|
|
self.assertIn(
|
|
'%s.%s' % (self.editor.quote_name(table), self.editor.quote_name('other')),
|
|
str(self.expressions),
|
|
)
|
|
|
|
def test_str(self):
|
|
table_name = self.editor.quote_name(Person._meta.db_table)
|
|
expected_str = '%s.%s, %s.%s DESC, (UPPER(%s.%s))' % (
|
|
table_name,
|
|
self.editor.quote_name('first_name'),
|
|
table_name,
|
|
self.editor.quote_name('last_name'),
|
|
table_name,
|
|
self.editor.quote_name('last_name'),
|
|
)
|
|
self.assertEqual(str(self.expressions), expected_str)
|