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87 lines
3.8 KiB
Python
87 lines
3.8 KiB
Python
from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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import sys
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def test_import_from_collection(monkeypatch):
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collection_root = os.path.join(os.path.dirname(__file__), 'fixtures', 'collections')
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collection_path = os.path.join(collection_root, 'ansible_collections/my_namespace/my_collection/plugins/module_utils/my_util.py')
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# the trace we're expecting to be generated when running the code below:
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# answer = question()
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expected_trace_log = [
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(collection_path, 5, 'call'),
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(collection_path, 6, 'line'),
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(collection_path, 6, 'return'),
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]
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# define the collection root before any ansible code has been loaded
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# otherwise config will have already been loaded and changing the environment will have no effect
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monkeypatch.setenv('ANSIBLE_COLLECTIONS_PATHS', collection_root)
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from ansible.utils.collection_loader import AnsibleCollectionLoader
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for index in [idx for idx, obj in enumerate(sys.meta_path) if isinstance(obj, AnsibleCollectionLoader)]:
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# replace any existing collection loaders that may exist
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# since these were loaded during unit test collection
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# they will not have the correct configuration
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sys.meta_path[index] = AnsibleCollectionLoader()
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# make sure the collection loader is installed
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# this will be a no-op if the collection loader is already installed
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# which will depend on whether or not any tests being run imported ansible.plugins.loader during unit test collection
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from ansible.plugins.loader import _configure_collection_loader
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_configure_collection_loader() # currently redundant, the import above already calls this
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from ansible_collections.my_namespace.my_collection.plugins.module_utils.my_util import question
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original_trace_function = sys.gettrace()
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trace_log = []
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if original_trace_function:
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# enable tracing while preserving the existing trace function (coverage)
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def my_trace_function(frame, event, arg):
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trace_log.append((frame.f_code.co_filename, frame.f_lineno, event))
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# the original trace function expects to have itself set as the trace function
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sys.settrace(original_trace_function)
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# call the original trace function
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original_trace_function(frame, event, arg)
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# restore our trace function
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sys.settrace(my_trace_function)
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return my_trace_function
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else:
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# no existing trace function, so our trace function is much simpler
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def my_trace_function(frame, event, arg):
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trace_log.append((frame.f_code.co_filename, frame.f_lineno, event))
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return my_trace_function
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sys.settrace(my_trace_function)
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try:
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# run a minimal amount of code while the trace is running
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# adding more code here, including use of a context manager, will add more to our trace
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answer = question()
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finally:
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sys.settrace(original_trace_function)
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# make sure relative imports work from collections code
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# these require __package__ to be set correctly
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import ansible_collections.my_namespace.my_collection.plugins.module_utils.my_other_util
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import ansible_collections.my_namespace.my_collection.plugins.action.my_action
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# verify that code loaded from a collection does not inherit __future__ statements from the collection loader
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if sys.version_info[0] == 2:
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# if the collection code inherits the division future feature from the collection loader this will fail
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assert answer == 1
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else:
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assert answer == 1.5
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# verify that the filename and line number reported by the trace is correct
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# this makes sure that collection loading preserves file paths and line numbers
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assert trace_log == expected_trace_log
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