New introspection endpoint: /-/databases - closes #470

Refs #419 and #465

tests/fixtures.py

@@ -100,6 +100,13 @@ def app_client_two_attached_databases():
     )
 
 
+@pytest.fixture(scope="session")
+def app_client_two_attached_databases_one_immutable():
+    yield from make_app_client(
+        is_immutable=True, extra_databases={"extra_database.db": EXTRA_DATABASE_SQL}
+    )
+
+
 @pytest.fixture(scope="session")
 def app_client_with_memory():
     yield from make_app_client(memory=True)

tests/test_api.py

@@ -6,6 +6,7 @@ from .fixtures import (  # noqa
     app_client_shorter_time_limit,
     app_client_larger_cache_size,
     app_client_returned_rows_matches_page_size,
+    app_client_two_attached_databases_one_immutable,
     app_client_with_cors,
     app_client_with_dot,
     generate_compound_rows,
@@ -1058,6 +1059,22 @@ def test_unit_filters(app_client):
     assert data["rows"][0][0] == 2
 
 
+def test_databases_json(app_client_two_attached_databases_one_immutable):
+    response = app_client_two_attached_databases_one_immutable.get("/-/databases.json")
+    databases = response.json
+    assert 2 == len(databases)
+    extra_database, fixtures_database = databases
+    assert "extra_database" == extra_database["name"]
+    assert None == extra_database["hash"]
+    assert True == extra_database["is_mutable"]
+    assert False == extra_database["is_memory"]
+
+    assert "fixtures" == fixtures_database["name"]
+    assert fixtures_database["hash"] is not None
+    assert False == fixtures_database["is_mutable"]
+    assert False == fixtures_database["is_memory"]
+
+
 def test_metadata_json(app_client):
     response = app_client.get("/-/metadata.json")
     assert METADATA == response.json