Testing: Check that pdb magics start a recursive debugger

spyder/plugins/ipythonconsole/tests/conftest.py

@@ -8,6 +8,7 @@
 # Standard library imports
 import os
 import os.path as osp
+from pathlib import Path
 import sys
 import threading
 import traceback
@@ -203,26 +204,57 @@ def get_plugin(name):
 
     debugger.get_plugin = get_plugin
     debugger.on_ipython_console_available()
+
+    # Plugin setup
     console.on_initialize()
     console._register()
     console.get_widget().matplotlib_status.register_ipythonconsole(console)
+
+    # Register handlers to run cells.
+    def get_file_code(fname, save_all=True):
+        """
+        Get code from a file.
+
+        save_all is necessary to keep consistency with the handler registered
+        in the editor.
+        """
+        path = Path(fname)
+        return path.read_text()
+
+    def get_cell(cell_id, fname):
+        """
+        Get cell code from a file.
+
+        For now this only works with unnamed cells and cell separators of the
+        form `# %%`.
+        """
+        path = Path(fname)
+        contents = path.read_text()
+        cells = contents.split("# %%")
+        return cells[int(cell_id)]
+
+    console.register_spyder_kernel_call_handler('get_file_code', get_file_code)
+    console.register_spyder_kernel_call_handler('run_cell', get_cell)
+
+    # Start client and show window
     console.create_new_client(
         special=special,
         given_name=given_name,
         path_to_custom_interpreter=path_to_custom_interpreter
     )
     window.setCentralWidget(console.get_widget())
 
-    # Set exclamation mark to True
-    configuration.set('debugger', 'pdb_use_exclamation_mark', True)
-
     if os.name == 'nt':
         qtbot.addWidget(window)
 
     with qtbot.waitExposed(window):
         window.resize(640, 480)
         window.show()
 
+    # Set exclamation mark to True
+    configuration.set('debugger', 'pdb_use_exclamation_mark', True)
+
+    # Create new client for Matplotlb backend tests
     if auto_backend or tk_backend:
         qtbot.wait(SHELL_TIMEOUT)
         console.create_new_client()

spyder/plugins/ipythonconsole/tests/test_ipythonconsole.py

@@ -1656,6 +1656,42 @@ def test_recursive_pdb(ipyconsole, qtbot):
     assert control.toPlainText().split()[-2:] == ["In", "[3]:"]
 
 
+def test_pdb_magics_are_recursive(ipyconsole, qtbot, tmp_path):
+    """
+    Check that calls to Pdb magics start a recursive debugger when called in
+    a debugging session.
+    """
+    shell = ipyconsole.get_current_shellwidget()
+    control = ipyconsole.get_widget().get_focus_widget()
+
+    # Code to run
+    code = "a = 10\n\n# %%\n\nb = 20"
+
+    # Write code to file on disk
+    file = tmp_path / 'test_pdb_magics.py'
+    file.write_text(code)
+
+    # Run file
+    with qtbot.waitSignal(shell.executed):
+        shell.execute(f"%debugfile {str(file)}")
+
+    # Run %debugfile in debugger
+    with qtbot.waitSignal(shell.executed):
+        shell.pdb_execute(f"%debugfile {str(file)}")
+
+    # Check that there are no errors and we started a recursive debugger
+    assert "error" not in control.toPlainText().lower()
+    assert "(IPdb [1]):" in control.toPlainText()
+
+    # Run %debugcell in debugger
+    with qtbot.waitSignal(shell.executed):
+        shell.pdb_execute(f"%debugcell -i 0 {str(file)}")
+
+    # Check that there are no errors and we started a recursive debugger
+    assert "error" not in control.toPlainText().lower()
+    assert "((IPdb [1])):" in control.toPlainText()
+
+
 @flaky(max_runs=3)
 @pytest.mark.skipif(os.name == 'nt', reason="Doesn't work on windows")
 def test_stop_pdb(ipyconsole, qtbot):