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import pytest
from harlequin.catalog import InteractiveCatalogItem
from harlequin_postgres.adapter import HarlequinPostgresConnection
from harlequin_postgres.catalog import (
ColumnCatalogItem,
DatabaseCatalogItem,
RelationCatalogItem,
SchemaCatalogItem,
TableCatalogItem,
ViewCatalogItem,
)
@pytest.fixture
def connection_with_objects(
connection: HarlequinPostgresConnection,
) -> HarlequinPostgresConnection:
connection.execute("create schema one")
connection.execute("create table one.foo as select 1 as a, '2' as b")
connection.execute("create table one.bar as select 1 as a, '2' as b")
connection.execute("create table one.baz as select 1 as a, '2' as b")
connection.execute("create schema two")
connection.execute("create view two.qux as select * from one.foo")
connection.execute("create schema three")
# the original connection fixture will clean this up.
return connection
def test_catalog(connection_with_objects: HarlequinPostgresConnection) -> None:
conn = connection_with_objects
catalog = conn.get_catalog()
# at least two databases, postgres and test
assert len(catalog.items) >= 2
[test_db_item] = filter(lambda item: item.label == "test", catalog.items)
assert isinstance(test_db_item, InteractiveCatalogItem)
assert isinstance(test_db_item, DatabaseCatalogItem)
assert not test_db_item.children
assert not test_db_item.loaded
schema_items = test_db_item.fetch_children()
assert all(isinstance(item, SchemaCatalogItem) for item in schema_items)
[schema_one_item] = filter(lambda item: item.label == "one", schema_items)
assert isinstance(schema_one_item, SchemaCatalogItem)
assert not schema_one_item.children
assert not schema_one_item.loaded
table_items = schema_one_item.fetch_children()
assert all(isinstance(item, RelationCatalogItem) for item in table_items)
[foo_item] = filter(lambda item: item.label == "foo", table_items)
assert isinstance(foo_item, TableCatalogItem)
assert not foo_item.children
assert not foo_item.loaded
foo_column_items = foo_item.fetch_children()
assert all(isinstance(item, ColumnCatalogItem) for item in foo_column_items)
[schema_two_item] = filter(lambda item: item.label == "two", schema_items)
assert isinstance(schema_two_item, SchemaCatalogItem)
assert not schema_two_item.children
assert not schema_two_item.loaded
view_items = schema_two_item.fetch_children()
assert all(isinstance(item, ViewCatalogItem) for item in view_items)
[qux_item] = filter(lambda item: item.label == "qux", view_items)
assert isinstance(qux_item, ViewCatalogItem)
assert not qux_item.children
assert not qux_item.loaded
qux_column_items = qux_item.fetch_children()
assert all(isinstance(item, ColumnCatalogItem) for item in qux_column_items)
assert [item.label for item in foo_column_items] == [
item.label for item in qux_column_items
]
# ensure calling fetch_children on cols doesn't raise
children_items = foo_column_items[0].fetch_children()
assert not children_items
[schema_three_item] = filter(lambda item: item.label == "three", schema_items)
assert isinstance(schema_two_item, SchemaCatalogItem)
assert not schema_two_item.children
assert not schema_two_item.loaded
three_children = schema_three_item.fetch_children()
assert not three_children
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