test: change IPython session handling to avoid astropy logging issues

Author: kmnhan

tests/interactive/imagetool/test_watcher.py

@@ -282,9 +282,9 @@ def test_watcher_real(qtbot):
     manager.show()
 
     # Start IPython session
-    from IPython.testing.globalipapp import get_ipython
+    from IPython.testing.globalipapp import start_ipython
 
-    ip_session: IPython.InteractiveShell = get_ipython()
+    ip_session: IPython.InteractiveShell = start_ipython()
 
     # Load extension
     ip_session.run_line_magic("load_ext", "erlab.interactive")
@@ -364,3 +364,4 @@ def test_watcher_real(qtbot):
     ip_session.user_ns.clear()  # Clear the user namespace
 
     ip_session.clear_instance()
+    del start_ipython.already_called

tests/io/plugins/test_hers.py

@@ -1,8 +1,13 @@
+from typing import TYPE_CHECKING
+
 import pytest
 import xarray as xr
 
 import erlab
 
+if TYPE_CHECKING:
+    import IPython
+
 
 @pytest.fixture(scope="module")
 def data_dir(test_data_dir):
@@ -26,8 +31,16 @@ def expected_dir(data_dir):
     ],
 )
 def test_load(expected_dir, args, expected) -> None:
+    # Start IPython session to avoid astropy logging issues
+    from IPython.testing.globalipapp import start_ipython
+
+    ip_session: IPython.InteractiveShell = start_ipython()
+
     loaded = erlab.io.load(**args) if isinstance(args, dict) else erlab.io.load(args)
 
     xr.testing.assert_identical(
         loaded, xr.load_dataarray(expected_dir / expected, engine="h5netcdf")
     )
+    # Properly clean up the IPython session
+    ip_session.clear_instance()
+    del start_ipython.already_called