tests: added fixture with energy usage instead of example (#11308)

* Added energy usage fixture. Updated dashboard utils and unicode fixture with new method parameters.

* Add energy fixture to tests/access_tests.py

* Add energy fixture to tests/core_tests.py

* Add energy fixture to tests/dashboard_tests.py

* Add energy fixture to tests/datasets/api_tests.py

* Add energy fixture to tests/db_engine_specs/base_engine_spec_tests.py

* Add energy fixture to tests/import_export_tests.py

* Add energy fixture to tests/model_tests.py

* Add energy fixture to tests/query_context_tests.py

* Add energy fixture to tests/security_tests.py

* Add energy fixture to tests/charts/api_tests.py

* Changed formatting of slices' parameters in energy usage fixture

* Removed loading energy udage data from test conf file

* Add energy fixture to tests/databases/api_tests.py

* Fixes after review: removed isort:skip, load_charts->load_energy_charts, removed unused import.

* Added energy fixture to tests/charts/commands_tests.py and retrieving proper Slice by name

* Fixed charts/api_tests.py to use energy_usage from fixtures

* Fixed datasets/commands_tests.py to retrieve dataset by name and use energy_usage fixture

* Changed energy usage data to generated data and fixed chart tests which was checking energy usage data

tests/datasets/commands_tests.py

@@ -17,6 +17,7 @@
 # pylint: disable=no-self-use, invalid-name, line-too-long
 
 from operator import itemgetter
+from typing import Any, List
 from unittest.mock import patch
 
 import pytest
@@ -33,6 +34,7 @@ from superset.datasets.commands.importers import v0, v1
 from superset.models.core import Database
 from superset.utils.core import get_example_database
 from tests.base_tests import SupersetTestCase
+from tests.fixtures.energy_dashboard import load_energy_table_with_slice
 from tests.fixtures.importexport import (
     database_config,
     database_metadata_config,
@@ -45,11 +47,14 @@ from tests.fixtures.importexport import (
 
 class TestExportDatasetsCommand(SupersetTestCase):
     @patch("superset.security.manager.g")
+    @pytest.mark.usefixtures("load_energy_table_with_slice")
     def test_export_dataset_command(self, mock_g):
         mock_g.user = security_manager.find_user("admin")
 
         example_db = get_example_database()
-        example_dataset = example_db.tables[0]
+        example_dataset = _get_table_from_list_by_name(
+            "energy_usage", example_db.tables
+        )
         command = ExportDatasetsCommand([example_dataset.id])
         contents = dict(command.run())
 
@@ -76,7 +81,7 @@ class TestExportDatasetsCommand(SupersetTestCase):
                 {
                     "column_name": "source",
                     "description": None,
-                    "expression": None,
+                    "expression": "",
                     "filterable": True,
                     "groupby": True,
                     "is_active": True,
@@ -88,7 +93,7 @@ class TestExportDatasetsCommand(SupersetTestCase):
                 {
                     "column_name": "target",
                     "description": None,
-                    "expression": None,
+                    "expression": "",
                     "filterable": True,
                     "groupby": True,
                     "is_active": True,
@@ -100,7 +105,7 @@ class TestExportDatasetsCommand(SupersetTestCase):
                 {
                     "column_name": "value",
                     "description": None,
-                    "expression": None,
+                    "expression": "",
                     "filterable": True,
                     "groupby": True,
                     "is_active": True,
@@ -171,12 +176,15 @@ class TestExportDatasetsCommand(SupersetTestCase):
             next(contents)
 
     @patch("superset.security.manager.g")
+    @pytest.mark.usefixtures("load_energy_table_with_slice")
     def test_export_dataset_command_key_order(self, mock_g):
         """Test that they keys in the YAML have the same order as export_fields"""
         mock_g.user = security_manager.find_user("admin")
 
         example_db = get_example_database()
-        example_dataset = example_db.tables[0]
+        example_dataset = _get_table_from_list_by_name(
+            "energy_usage", example_db.tables
+        )
         command = ExportDatasetsCommand([example_dataset.id])
         contents = dict(command.run())
 
@@ -454,3 +462,10 @@ class TestImportDatasetsCommand(SupersetTestCase):
         db.session.delete(database.tables[0])
         db.session.delete(database)
         db.session.commit()
+
+
+def _get_table_from_list_by_name(name: str, tables: List[Any]):
+    for table in tables:
+        if table.table_name == name:
+            return table
+    raise ValueError(f"Table {name} does not exists in database")