815f07d6c1
Also: Allow override of database name and user in tests (important for me as I would have to mess with my PSQL and MySQL database users otherwise) Use dict.items instead of six.iteritems as it sporadically caused RuntimeError: dictionary changed size during iteration in Python 2.6 tests. Fix typo DNS to DSN Adds Python 3.5 to tox.ini Added an .editorconfig Import babel.dates in sqlalchemy_utils.i18n as an exception would be raised when using the latest versions of babel.
165 lines
4.8 KiB
Python
165 lines
4.8 KiB
Python
import pytest
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import sqlalchemy as sa
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from sqlalchemy.dialects import postgresql
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from sqlalchemy_utils import Asterisk, row_to_json
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from sqlalchemy_utils.expressions import explain, explain_analyze
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@pytest.fixture
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def assert_startswith(session):
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def assert_startswith(query, query_part):
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assert str(
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query.compile(dialect=postgresql.dialect())
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).startswith(query_part)
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# Check that query executes properly
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session.execute(query)
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return assert_startswith
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@pytest.fixture
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def Article(Base):
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class Article(Base):
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__tablename__ = 'article'
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id = sa.Column(sa.Integer, primary_key=True)
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name = sa.Column(sa.Unicode(255))
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content = sa.Column(sa.UnicodeText)
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return Article
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@pytest.mark.usefixtures('postgresql_dsn')
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class TestExplain(object):
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def test_render_explain(self, session, assert_startswith, Article):
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assert_startswith(
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explain(session.query(Article)),
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'EXPLAIN SELECT'
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)
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def test_render_explain_with_analyze(
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self,
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session,
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assert_startswith,
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Article
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):
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assert_startswith(
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explain(session.query(Article), analyze=True),
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'EXPLAIN (ANALYZE true) SELECT'
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)
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def test_with_string_as_stmt_param(self, assert_startswith):
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assert_startswith(
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explain('SELECT 1 FROM article'),
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'EXPLAIN SELECT'
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)
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def test_format(self, assert_startswith):
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assert_startswith(
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explain('SELECT 1 FROM article', format='json'),
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'EXPLAIN (FORMAT json) SELECT'
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)
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def test_timing(self, assert_startswith):
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assert_startswith(
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explain('SELECT 1 FROM article', analyze=True, timing=False),
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'EXPLAIN (ANALYZE true, TIMING false) SELECT'
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)
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def test_verbose(self, assert_startswith):
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assert_startswith(
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explain('SELECT 1 FROM article', verbose=True),
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'EXPLAIN (VERBOSE true) SELECT'
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)
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def test_buffers(self, assert_startswith):
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assert_startswith(
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explain('SELECT 1 FROM article', analyze=True, buffers=True),
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'EXPLAIN (ANALYZE true, BUFFERS true) SELECT'
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)
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def test_costs(self, assert_startswith):
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assert_startswith(
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explain('SELECT 1 FROM article', costs=False),
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'EXPLAIN (COSTS false) SELECT'
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)
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class TestExplainAnalyze(object):
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def test_render_explain_analyze(self, session, Article):
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assert str(
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explain_analyze(session.query(Article))
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.compile(
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dialect=postgresql.dialect()
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)
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).startswith('EXPLAIN (ANALYZE true) SELECT')
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class TestAsterisk(object):
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def test_with_table_object(self):
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Base = sa.ext.declarative.declarative_base()
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class Article(Base):
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__tablename__ = 'article'
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id = sa.Column(sa.Integer, primary_key=True)
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assert str(Asterisk(Article.__table__)) == 'article.*'
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def test_with_quoted_identifier(self):
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Base = sa.ext.declarative.declarative_base()
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class User(Base):
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__tablename__ = 'user'
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id = sa.Column(sa.Integer, primary_key=True)
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assert str(Asterisk(User.__table__).compile(
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dialect=postgresql.dialect()
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)) == '"user".*'
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class TestRowToJson(object):
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def test_compiler_with_default_dialect(self):
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with pytest.raises(sa.exc.CompileError):
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str(row_to_json(sa.text('article.*')))
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def test_compiler_with_postgresql(self):
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assert str(row_to_json(sa.text('article.*')).compile(
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dialect=postgresql.dialect()
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)) == 'row_to_json(article.*)'
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def test_type(self):
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assert isinstance(
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sa.func.row_to_json(sa.text('article.*')).type,
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postgresql.JSON
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)
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class TestArrayAgg(object):
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def test_compiler_with_default_dialect(self):
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with pytest.raises(sa.exc.CompileError):
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str(sa.func.array_agg(sa.text('u.name')))
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def test_compiler_with_postgresql(self):
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assert str(sa.func.array_agg(sa.text('u.name')).compile(
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dialect=postgresql.dialect()
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)) == "array_agg(u.name)"
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def test_type(self):
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assert isinstance(
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sa.func.array_agg(sa.text('u.name')).type,
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postgresql.ARRAY
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)
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def test_array_agg_with_default(self):
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Base = sa.ext.declarative.declarative_base()
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class Article(Base):
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__tablename__ = 'article'
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id = sa.Column(sa.Integer, primary_key=True)
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assert str(sa.func.array_agg(Article.id, [1]).compile(
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dialect=postgresql.dialect()
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)) == (
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'coalesce(array_agg(article.id), CAST(ARRAY[%(param_1)s]'
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' AS INTEGER[]))'
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)
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