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|
# (C) Copyright 2005-2025 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" Tests operations that span contexts. """
# Standard library imports.
import unittest
# Enthought library imports.
from apptools.naming.api import (
Context,
InvalidNameError,
NameAlreadyBoundError,
NameNotFoundError,
NotContextError,
ObjectFactory,
StateFactory,
)
class ContextTestCase(unittest.TestCase):
""" Tests naming operations that span contexts. """
###########################################################################
# 'TestCase' interface.
###########################################################################
def setUp(self):
""" Prepares the test fixture before each test method is called. """
self.context = self.create_context()
self.context.create_subcontext("sub")
def tearDown(self):
""" Called immediately after each test method has been called. """
self.context = None
###########################################################################
# 'ContextTestCase' interface.
###########################################################################
def create_context(self):
""" Creates the context that we are testing. """
return Context()
###########################################################################
# Tests.
###########################################################################
def test_bind(self):
""" bind """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
self.assertIsInstance(sub, Context)
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.bind, "", 1)
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.bind, "xx/a", 1)
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(NotContextError, context.bind, "sub/a/xx", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Try to bind it again.
self.assertRaises(NameAlreadyBoundError, context.bind, "sub/a", 1)
def test_bind_with_make_contexts(self):
""" bind with make contexts """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
self.assertIsInstance(sub, Context)
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.bind, "", 1, True)
# Attempt to resolve via a non-existent context - which should result
# in the context being created automatically.
context.bind("xx/a", 1, True)
self.assertEqual(len(context.list_bindings("xx")), 1)
self.assertEqual(1, context.lookup("xx/a"))
# Bind an even more 'nested' name.
context.bind("xx/foo/bar/baz", 42, True)
self.assertEqual(len(context.list_bindings("xx/foo/bar")), 1)
self.assertEqual(42, context.lookup("xx/foo/bar/baz"))
def test_rebind(self):
""" context rebind """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.rebind, "", 1)
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.rebind, "xx/a", 1)
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Rebind it.
context.rebind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(NotContextError, context.rebind, "sub/a/xx", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
def test_rebind_with_make_contexts(self):
""" rebind with make contexts """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
self.assertIsInstance(sub, Context)
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.rebind, "", 1, True)
# Attempt to resolve via a non-existent context - which should result
# in the context being created automatically.
context.rebind("xx/a", 1, True)
self.assertEqual(len(context.list_bindings("xx")), 1)
self.assertEqual(1, context.lookup("xx/a"))
# Rebind an even more 'nested' name.
context.rebind("xx/foo/bar/baz", 42, True)
self.assertEqual(len(context.list_bindings("xx/foo/bar")), 1)
self.assertEqual(42, context.lookup("xx/foo/bar/baz"))
# And do it again... (this is REbind after all).
context.rebind("xx/foo/bar/baz", 42, True)
self.assertEqual(len(context.list_bindings("xx/foo/bar")), 1)
self.assertEqual(42, context.lookup("xx/foo/bar/baz"))
def test_unbind(self):
""" context unbind """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.unbind, "")
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.unbind, "xx/a")
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(NotContextError, context.unbind, "sub/a/xx")
self.assertEqual(len(sub.list_bindings("")), 1)
# Unbind it.
context.unbind("sub/a")
self.assertEqual(len(sub.list_bindings("")), 0)
# Try to unbind a non-existent name.
self.assertRaises(NameNotFoundError, context.unbind, "sub/b")
def test_rename_object(self):
""" rename an object """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.rename, "", "x")
self.assertRaises(InvalidNameError, context.rename, "x", "")
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.rename, "x/a", "x/b")
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(NotContextError, context.bind, "sub/a/xx", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Rename it.
context.rename("sub/a", "sub/b")
self.assertEqual(len(sub.list_bindings("")), 1)
# Lookup using the new name.
self.assertEqual(context.lookup("sub/b"), 1)
# Lookup using the old name.
self.assertRaises(NameNotFoundError, context.lookup, "sub/a")
def test_rename_context(self):
""" rename a context """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.rename, "", "x")
self.assertRaises(InvalidNameError, context.rename, "x", "")
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.rename, "x/a", "x/b")
self.assertEqual(len(sub.list_bindings("")), 0)
# Create a context.
context.create_subcontext("sub/a")
self.assertEqual(len(sub.list_bindings("")), 1)
# Rename it.
context.rename("sub/a", "sub/b")
self.assertEqual(len(sub.list_bindings("")), 1)
# Lookup using the new name.
context.lookup("sub/b")
# Lookup using the old name.
self.assertRaises(NameNotFoundError, context.lookup, "sub/a")
def test_lookup(self):
""" lookup """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.lookup, "xx/a")
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(NotContextError, context.lookup, "sub/a/xx")
self.assertEqual(len(sub.list_bindings("")), 1)
# Look it up.
self.assertEqual(context.lookup("sub/a"), 1)
# Looking up the Empty name returns the context itself.
self.assertEqual(context.lookup(""), context)
# Non-existent name.
self.assertRaises(NameNotFoundError, context.lookup, "sub/b")
def test_create_subcontext(self):
""" create sub-context """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.create_subcontext, "")
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.create_subcontext, "xx/a")
self.assertEqual(len(sub.list_bindings("")), 0)
# Create a sub-context.
context.create_subcontext("sub/a")
self.assertEqual(len(sub.list_bindings("")), 1)
# Try to bind it again.
self.assertRaises(
NameAlreadyBoundError, context.create_subcontext, "sub/a"
)
# Bind a name.
context.bind("sub/b", 1)
self.assertEqual(len(sub.list_bindings("")), 2)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(
NotContextError, context.create_subcontext, "sub/b/xx"
)
self.assertEqual(len(sub.list_bindings("")), 2)
def test_destroy_subcontext(self):
""" single context destroy sub-context """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# Make sure that the sub-context is empty.
self.assertEqual(len(sub.list_bindings("")), 0)
# Empty name.
self.assertRaises(InvalidNameError, context.destroy_subcontext, "")
# Attempt to resolve via a non-existent context.
self.assertRaises(
NameNotFoundError, context.destroy_subcontext, "xx/a"
)
self.assertEqual(len(sub.list_bindings("")), 0)
# Create a sub-context.
context.create_subcontext("sub/a")
self.assertEqual(len(sub.list_bindings("")), 1)
# Destroy it.
context.destroy_subcontext("sub/a")
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Try to destroy it.
self.assertRaises(NotContextError, context.destroy_subcontext, "sub/a")
# Try to destroy a non-existent name.
self.assertRaises(
NameNotFoundError, context.destroy_subcontext, "sub/b"
)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(
NotContextError, context.destroy_subcontext, "sub/a/xx"
)
self.assertEqual(len(sub.list_bindings("")), 1)
def test_list_bindings(self):
""" list bindings """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# List the bindings in the root.
bindings = context.list_bindings("")
self.assertEqual(len(bindings), 1)
# List the names in the sub-context.
bindings = context.list_bindings("sub")
self.assertEqual(len(bindings), 0)
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.list_bindings, "xx/a")
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(NotContextError, context.list_bindings, "sub/a/xx")
self.assertEqual(len(sub.list_bindings("")), 1)
def test_list_names(self):
""" list names """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
# List the names in the root.
names = context.list_names("")
self.assertEqual(len(names), 1)
# List the names in the sub-context.
names = context.list_names("sub")
self.assertEqual(len(names), 0)
# Attempt to resolve via a non-existent context.
self.assertRaises(NameNotFoundError, context.list_names, "xx/a")
self.assertEqual(len(sub.list_bindings("")), 0)
# Bind a name.
context.bind("sub/a", 1)
self.assertEqual(len(sub.list_bindings("")), 1)
# Attempt to resolve via an existing name that is not a context.
self.assertRaises(NotContextError, context.list_names, "sub/a/xx")
self.assertEqual(len(sub.list_bindings("")), 1)
def test_default_factories(self):
""" default object and state factories. """
object_factory = ObjectFactory()
self.assertRaises(
NotImplementedError, object_factory.get_object_instance, 0, 0, 0
)
state_factory = StateFactory()
self.assertRaises(
NotImplementedError, state_factory.get_state_to_bind, 0, 0, 0
)
def test_search(self):
""" test retrieving the names of bound objects """
# Convenience.
context = self.context
sub = self.context.lookup("sub")
context.create_subcontext("sub sibling")
sub_sub = sub.create_subcontext("sub sub")
context.bind("one", 1)
names = context.search(1)
self.assertEqual(len(names), 1)
self.assertEqual(names[0], "one")
names = sub.search(1)
self.assertEqual(len(names), 0)
context.bind("sub/two", 2)
names = context.search(2)
self.assertEqual(len(names), 1)
self.assertEqual(names[0], "sub/two")
names = sub.search(2)
self.assertEqual(len(names), 1)
self.assertEqual(names[0], "two")
context.bind("sub/sub sub/one", 1)
names = context.search(1)
self.assertEqual(len(names), 2)
self.assertEqual(sorted(names), sorted(["one", "sub/sub sub/one"]))
names = sub.search(None)
self.assertEqual(len(names), 0)
names = context.search(sub_sub)
self.assertEqual(len(names), 1)
self.assertEqual(names[0], "sub/sub sub")
|
