upstream/ipython Files · IPython/core/tests/test_application.py

Make event triggering robust to (un)registration....

Make event triggering robust to (un)registration. Event callbacks can register or unregister new callbacks for the same event while executing, and the previous triggering implementation allowed for event callbacks to be inadvertently skipped. The fix is to make a copy of the list of callbacks before executing any of them. With this change, the resulting semantics are simple: any callbacks registered before triggering are executed, and any new callbacks registered are only visible at the next triggering of the event. Note that this could potentially break existing callers who expected newly-appended callbacks were immediately executed. Fixes . Originally based on a patch by @marksandler2.

Thomas Kluyver - - Load All Authors

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      # coding: utf-8

      """Tests for IPython.core.application"""

      import os

      import tempfile

      from IPython.core.application import BaseIPythonApplication

      from IPython.testing import decorators as dec

      from IPython.utils import py3compat

      @dec.onlyif_unicode_paths

      def test_unicode_cwd():

          """Check that IPython starts with non-ascii characters in the path."""

          wd = tempfile.mkdtemp(suffix=u"€")

          old_wd = py3compat.getcwd()

          os.chdir(wd)

          #raise Exception(repr(py3compat.getcwd()))

          try:

              app = BaseIPythonApplication()

              # The lines below are copied from Application.initialize()

              app.init_profile_dir()

              app.init_config_files()

              app.load_config_file(suppress_errors=False)

          finally:

              os.chdir(old_wd)

      @dec.onlyif_unicode_paths

      def test_unicode_ipdir():

          """Check that IPython starts with non-ascii characters in the IP dir."""

          ipdir = tempfile.mkdtemp(suffix=u"€")

          # Create the config file, so it tries to load it.

          with open(os.path.join(ipdir, 'ipython_config.py'), "w") as f:

              pass

          old_ipdir1 = os.environ.pop("IPYTHONDIR", None)

          old_ipdir2 = os.environ.pop("IPYTHON_DIR", None)

          os.environ["IPYTHONDIR"] = py3compat.unicode_to_str(ipdir, "utf-8")

          try:

              app = BaseIPythonApplication()

              # The lines below are copied from Application.initialize()

              app.init_profile_dir()

              app.init_config_files()

              app.load_config_file(suppress_errors=False)

          finally:

              if old_ipdir1:

                  os.environ["IPYTHONDIR"] = old_ipdir1

              if old_ipdir2:

                  os.environ["IPYTHONDIR"] = old_ipdir2

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				# coding: utf-8
				"""Tests for IPython.core.application"""

				import os
				import tempfile

				from IPython.core.application import BaseIPythonApplication
				from IPython.testing import decorators as dec
				from IPython.utils import py3compat

				@dec.onlyif_unicode_paths
				def test_unicode_cwd():
				"""Check that IPython starts with non-ascii characters in the path."""
				wd = tempfile.mkdtemp(suffix=u"€")

				old_wd = py3compat.getcwd()
				os.chdir(wd)
				#raise Exception(repr(py3compat.getcwd()))
				try:
				app = BaseIPythonApplication()
				# The lines below are copied from Application.initialize()
				app.init_profile_dir()
				app.init_config_files()
				app.load_config_file(suppress_errors=False)
				finally:
				os.chdir(old_wd)

				@dec.onlyif_unicode_paths
				def test_unicode_ipdir():
				"""Check that IPython starts with non-ascii characters in the IP dir."""
				ipdir = tempfile.mkdtemp(suffix=u"€")

				# Create the config file, so it tries to load it.
				with open(os.path.join(ipdir, 'ipython_config.py'), "w") as f:
				pass

				old_ipdir1 = os.environ.pop("IPYTHONDIR", None)
				old_ipdir2 = os.environ.pop("IPYTHON_DIR", None)
				os.environ["IPYTHONDIR"] = py3compat.unicode_to_str(ipdir, "utf-8")
				try:
				app = BaseIPythonApplication()
				# The lines below are copied from Application.initialize()
				app.init_profile_dir()
				app.init_config_files()
				app.load_config_file(suppress_errors=False)
				finally:
				if old_ipdir1:
				os.environ["IPYTHONDIR"] = old_ipdir1
				if old_ipdir2:
				os.environ["IPYTHONDIR"] = old_ipdir2