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382 lines
12 KiB
382 lines
12 KiB
3 years ago
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import random
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from . import testing
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from .. import config
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from .. import fixtures
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from .. import util
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from ..assertions import eq_
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from ..assertions import is_false
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from ..assertions import is_true
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from ..config import requirements
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from ..schema import Table
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from ... import CheckConstraint
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from ... import Column
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from ... import ForeignKeyConstraint
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from ... import Index
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from ... import inspect
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from ... import Integer
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from ... import schema
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from ... import String
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from ... import UniqueConstraint
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class TableDDLTest(fixtures.TestBase):
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__backend__ = True
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def _simple_fixture(self, schema=None):
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return Table(
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"test_table",
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self.metadata,
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Column("id", Integer, primary_key=True, autoincrement=False),
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Column("data", String(50)),
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schema=schema,
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)
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def _underscore_fixture(self):
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return Table(
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"_test_table",
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self.metadata,
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Column("id", Integer, primary_key=True, autoincrement=False),
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Column("_data", String(50)),
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)
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def _table_index_fixture(self, schema=None):
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table = self._simple_fixture(schema=schema)
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idx = Index("test_index", table.c.data)
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return table, idx
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def _simple_roundtrip(self, table):
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with config.db.begin() as conn:
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conn.execute(table.insert().values((1, "some data")))
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result = conn.execute(table.select())
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eq_(result.first(), (1, "some data"))
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@requirements.create_table
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@util.provide_metadata
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def test_create_table(self):
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table = self._simple_fixture()
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table.create(config.db, checkfirst=False)
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self._simple_roundtrip(table)
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@requirements.create_table
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@requirements.schemas
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@util.provide_metadata
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def test_create_table_schema(self):
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table = self._simple_fixture(schema=config.test_schema)
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table.create(config.db, checkfirst=False)
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self._simple_roundtrip(table)
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@requirements.drop_table
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@util.provide_metadata
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def test_drop_table(self):
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table = self._simple_fixture()
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table.create(config.db, checkfirst=False)
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table.drop(config.db, checkfirst=False)
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@requirements.create_table
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@util.provide_metadata
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def test_underscore_names(self):
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table = self._underscore_fixture()
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table.create(config.db, checkfirst=False)
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self._simple_roundtrip(table)
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@requirements.comment_reflection
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@util.provide_metadata
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def test_add_table_comment(self, connection):
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table = self._simple_fixture()
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table.create(connection, checkfirst=False)
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table.comment = "a comment"
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connection.execute(schema.SetTableComment(table))
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eq_(
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inspect(connection).get_table_comment("test_table"),
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{"text": "a comment"},
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)
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@requirements.comment_reflection
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@util.provide_metadata
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def test_drop_table_comment(self, connection):
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table = self._simple_fixture()
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table.create(connection, checkfirst=False)
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table.comment = "a comment"
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connection.execute(schema.SetTableComment(table))
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connection.execute(schema.DropTableComment(table))
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eq_(
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inspect(connection).get_table_comment("test_table"), {"text": None}
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)
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@requirements.table_ddl_if_exists
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@util.provide_metadata
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def test_create_table_if_not_exists(self, connection):
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table = self._simple_fixture()
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connection.execute(schema.CreateTable(table, if_not_exists=True))
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is_true(inspect(connection).has_table("test_table"))
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connection.execute(schema.CreateTable(table, if_not_exists=True))
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@requirements.index_ddl_if_exists
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@util.provide_metadata
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def test_create_index_if_not_exists(self, connection):
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table, idx = self._table_index_fixture()
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connection.execute(schema.CreateTable(table, if_not_exists=True))
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is_true(inspect(connection).has_table("test_table"))
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is_false(
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"test_index"
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in [
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ix["name"]
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for ix in inspect(connection).get_indexes("test_table")
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]
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)
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connection.execute(schema.CreateIndex(idx, if_not_exists=True))
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is_true(
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"test_index"
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in [
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ix["name"]
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for ix in inspect(connection).get_indexes("test_table")
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]
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)
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connection.execute(schema.CreateIndex(idx, if_not_exists=True))
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@requirements.table_ddl_if_exists
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@util.provide_metadata
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def test_drop_table_if_exists(self, connection):
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table = self._simple_fixture()
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table.create(connection)
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is_true(inspect(connection).has_table("test_table"))
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connection.execute(schema.DropTable(table, if_exists=True))
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is_false(inspect(connection).has_table("test_table"))
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connection.execute(schema.DropTable(table, if_exists=True))
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@requirements.index_ddl_if_exists
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@util.provide_metadata
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def test_drop_index_if_exists(self, connection):
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table, idx = self._table_index_fixture()
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table.create(connection)
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is_true(
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"test_index"
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in [
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ix["name"]
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for ix in inspect(connection).get_indexes("test_table")
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]
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)
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connection.execute(schema.DropIndex(idx, if_exists=True))
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is_false(
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"test_index"
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in [
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ix["name"]
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for ix in inspect(connection).get_indexes("test_table")
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]
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)
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connection.execute(schema.DropIndex(idx, if_exists=True))
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class FutureTableDDLTest(fixtures.FutureEngineMixin, TableDDLTest):
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pass
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class LongNameBlowoutTest(fixtures.TestBase):
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"""test the creation of a variety of DDL structures and ensure
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label length limits pass on backends
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"""
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__backend__ = True
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def fk(self, metadata, connection):
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convention = {
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"fk": "foreign_key_%(table_name)s_"
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"%(column_0_N_name)s_"
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"%(referred_table_name)s_"
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+ (
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"_".join(
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"".join(random.choice("abcdef") for j in range(20))
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for i in range(10)
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)
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),
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}
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metadata.naming_convention = convention
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Table(
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"a_things_with_stuff",
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metadata,
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Column("id_long_column_name", Integer, primary_key=True),
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test_needs_fk=True,
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)
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cons = ForeignKeyConstraint(
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["aid"], ["a_things_with_stuff.id_long_column_name"]
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)
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Table(
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"b_related_things_of_value",
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metadata,
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Column(
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"aid",
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),
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cons,
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test_needs_fk=True,
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)
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actual_name = cons.name
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metadata.create_all(connection)
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if testing.requires.foreign_key_constraint_name_reflection.enabled:
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insp = inspect(connection)
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fks = insp.get_foreign_keys("b_related_things_of_value")
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reflected_name = fks[0]["name"]
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return actual_name, reflected_name
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else:
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return actual_name, None
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def pk(self, metadata, connection):
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convention = {
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"pk": "primary_key_%(table_name)s_"
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"%(column_0_N_name)s"
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+ (
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"_".join(
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"".join(random.choice("abcdef") for j in range(30))
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for i in range(10)
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)
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),
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}
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metadata.naming_convention = convention
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a = Table(
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"a_things_with_stuff",
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metadata,
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Column("id_long_column_name", Integer, primary_key=True),
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Column("id_another_long_name", Integer, primary_key=True),
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)
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cons = a.primary_key
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actual_name = cons.name
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metadata.create_all(connection)
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insp = inspect(connection)
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pk = insp.get_pk_constraint("a_things_with_stuff")
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reflected_name = pk["name"]
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return actual_name, reflected_name
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def ix(self, metadata, connection):
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convention = {
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"ix": "index_%(table_name)s_"
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"%(column_0_N_name)s"
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+ (
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"_".join(
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"".join(random.choice("abcdef") for j in range(30))
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for i in range(10)
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)
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),
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}
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metadata.naming_convention = convention
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a = Table(
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"a_things_with_stuff",
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metadata,
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Column("id_long_column_name", Integer, primary_key=True),
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Column("id_another_long_name", Integer),
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)
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cons = Index(None, a.c.id_long_column_name, a.c.id_another_long_name)
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actual_name = cons.name
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metadata.create_all(connection)
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insp = inspect(connection)
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ix = insp.get_indexes("a_things_with_stuff")
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reflected_name = ix[0]["name"]
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return actual_name, reflected_name
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def uq(self, metadata, connection):
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convention = {
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"uq": "unique_constraint_%(table_name)s_"
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"%(column_0_N_name)s"
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+ (
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"_".join(
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"".join(random.choice("abcdef") for j in range(30))
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for i in range(10)
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)
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),
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}
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metadata.naming_convention = convention
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cons = UniqueConstraint("id_long_column_name", "id_another_long_name")
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Table(
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"a_things_with_stuff",
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metadata,
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Column("id_long_column_name", Integer, primary_key=True),
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Column("id_another_long_name", Integer),
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cons,
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)
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actual_name = cons.name
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metadata.create_all(connection)
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insp = inspect(connection)
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uq = insp.get_unique_constraints("a_things_with_stuff")
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reflected_name = uq[0]["name"]
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return actual_name, reflected_name
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def ck(self, metadata, connection):
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convention = {
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"ck": "check_constraint_%(table_name)s"
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+ (
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"_".join(
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"".join(random.choice("abcdef") for j in range(30))
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for i in range(10)
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)
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),
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}
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metadata.naming_convention = convention
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cons = CheckConstraint("some_long_column_name > 5")
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Table(
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"a_things_with_stuff",
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metadata,
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Column("id_long_column_name", Integer, primary_key=True),
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Column("some_long_column_name", Integer),
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cons,
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)
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actual_name = cons.name
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metadata.create_all(connection)
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insp = inspect(connection)
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ck = insp.get_check_constraints("a_things_with_stuff")
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reflected_name = ck[0]["name"]
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return actual_name, reflected_name
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@testing.combinations(
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("fk",),
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("pk",),
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("ix",),
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("ck", testing.requires.check_constraint_reflection.as_skips()),
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("uq", testing.requires.unique_constraint_reflection.as_skips()),
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argnames="type_",
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)
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def test_long_convention_name(self, type_, metadata, connection):
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actual_name, reflected_name = getattr(self, type_)(
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metadata, connection
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)
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assert len(actual_name) > 255
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if reflected_name is not None:
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overlap = actual_name[0 : len(reflected_name)]
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if len(overlap) < len(actual_name):
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eq_(overlap[0:-5], reflected_name[0 : len(overlap) - 5])
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else:
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eq_(overlap, reflected_name)
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__all__ = ("TableDDLTest", "FutureTableDDLTest", "LongNameBlowoutTest")
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