def test_component_context():
"""Ensure the context element of a Component works."""
app = _create_app()
ctx = {
'current_user': None,
'limit': 10,
'offset': 10,
'foo': 'bar',
}
comp = Component(app=app, context=ctx)
assert comp.context
assert comp.context == ctx
assert comp._context == ctx
# now replace the context in place
new_ctx = {'baz': 'qux', 'limit': 20, 'new_key': 'new'}
comp.update_context(new_ctx)
assert comp.context == new_ctx
assert comp._context == new_ctx
assert 'current_user' not in comp.context
assert 'offset' not in comp.context
assert comp.context['limit'] == 20
assert comp.context['new_key'] == 'new'
def test_clear_context():
"""Ensure we can clear the context"""
app = _create_app()
ctx = {
'ctxkey': 'bar',
}
comp = Component(app=app, context=ctx)
assert comp.context == ctx
comp.clear_context()
assert comp.context == {}
def test_component_creation_with_app():
"""Ensure we can create a Component with an app."""
app = _create_app()
comp = Component(app=app)
assert comp.app is comp._app is app
assert comp.config['FOO'] == 'BAR'
def test_component_creation_with_init_app():
"""Ensure we can create a Component without an app."""
app = _create_app()
comp = Component()
comp.init_app(app)
with app.app_context():
assert comp.app == app
assert comp._app is None
assert comp.config['FOO'] == 'BAR'
# now test with some context
ctx = {
'current_user': None,
'limit': 10,
'offset': 10,
'foo': 'bar',
}
# @TODO: detect that this is already registered and update the default
# context...
comp.init_app(app, context=ctx)
assert comp.app == app
assert comp.context == ctx
def test_component_implicit_current_app():
"""Ensure that a component without app knowledge falls back to current_app
"""
app = _create_app()
comp = Component()
with app.test_request_context('/'):
assert comp.app == app
# and with no proxies bound, give me a RuntimeError
with pytest.raises(RuntimeError):
assert comp.app != app
def test_component_context_no_default_eager_app():
"""Ensure that context works without a default context."""
app = _create_app()
comp = Component(app=app)
new_ctx = {'foo': 'bar'}
assert comp._context is DEFAULT_DICT
assert comp.context is DEFAULT_DICT
comp.update_context(new_ctx)
assert comp.context == new_ctx
assert comp._context == new_ctx
comp.clear_context()
assert comp.context is DEFAULT_DICT
assert comp._context is DEFAULT_DICT
def test_component_raises_when_no_app():
"""Ensure that Component.app raises if nothing is present."""
err_msg = ("This component hasn't been initialized yet and an app context"
" doesn't exist.")
with pytest.raises(RuntimeError, message=err_msg):
Component().app