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Diffstat (limited to 'test/units/mock/yaml_helper.py')
| -rw-r--r-- | test/units/mock/yaml_helper.py | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/test/units/mock/yaml_helper.py b/test/units/mock/yaml_helper.py new file mode 100644 index 00000000..1ef17215 --- /dev/null +++ b/test/units/mock/yaml_helper.py @@ -0,0 +1,124 @@ +from __future__ import (absolute_import, division, print_function) +__metaclass__ = type + +import io +import yaml + +from ansible.module_utils.six import PY3 +from ansible.parsing.yaml.loader import AnsibleLoader +from ansible.parsing.yaml.dumper import AnsibleDumper + + +class YamlTestUtils(object): + """Mixin class to combine with a unittest.TestCase subclass.""" + def _loader(self, stream): + """Vault related tests will want to override this. + + Vault cases should setup a AnsibleLoader that has the vault password.""" + return AnsibleLoader(stream) + + def _dump_stream(self, obj, stream, dumper=None): + """Dump to a py2-unicode or py3-string stream.""" + if PY3: + return yaml.dump(obj, stream, Dumper=dumper) + else: + return yaml.dump(obj, stream, Dumper=dumper, encoding=None) + + def _dump_string(self, obj, dumper=None): + """Dump to a py2-unicode or py3-string""" + if PY3: + return yaml.dump(obj, Dumper=dumper) + else: + return yaml.dump(obj, Dumper=dumper, encoding=None) + + def _dump_load_cycle(self, obj): + # Each pass though a dump or load revs the 'generation' + # obj to yaml string + string_from_object_dump = self._dump_string(obj, dumper=AnsibleDumper) + + # wrap a stream/file like StringIO around that yaml + stream_from_object_dump = io.StringIO(string_from_object_dump) + loader = self._loader(stream_from_object_dump) + # load the yaml stream to create a new instance of the object (gen 2) + obj_2 = loader.get_data() + + # dump the gen 2 objects directory to strings + string_from_object_dump_2 = self._dump_string(obj_2, + dumper=AnsibleDumper) + + # The gen 1 and gen 2 yaml strings + self.assertEqual(string_from_object_dump, string_from_object_dump_2) + # the gen 1 (orig) and gen 2 py object + self.assertEqual(obj, obj_2) + + # again! gen 3... load strings into py objects + stream_3 = io.StringIO(string_from_object_dump_2) + loader_3 = self._loader(stream_3) + obj_3 = loader_3.get_data() + + string_from_object_dump_3 = self._dump_string(obj_3, dumper=AnsibleDumper) + + self.assertEqual(obj, obj_3) + # should be transitive, but... + self.assertEqual(obj_2, obj_3) + self.assertEqual(string_from_object_dump, string_from_object_dump_3) + + def _old_dump_load_cycle(self, obj): + '''Dump the passed in object to yaml, load it back up, dump again, compare.''' + stream = io.StringIO() + + yaml_string = self._dump_string(obj, dumper=AnsibleDumper) + self._dump_stream(obj, stream, dumper=AnsibleDumper) + + yaml_string_from_stream = stream.getvalue() + + # reset stream + stream.seek(0) + + loader = self._loader(stream) + # loader = AnsibleLoader(stream, vault_password=self.vault_password) + obj_from_stream = loader.get_data() + + stream_from_string = io.StringIO(yaml_string) + loader2 = self._loader(stream_from_string) + # loader2 = AnsibleLoader(stream_from_string, vault_password=self.vault_password) + obj_from_string = loader2.get_data() + + stream_obj_from_stream = io.StringIO() + stream_obj_from_string = io.StringIO() + + if PY3: + yaml.dump(obj_from_stream, stream_obj_from_stream, Dumper=AnsibleDumper) + yaml.dump(obj_from_stream, stream_obj_from_string, Dumper=AnsibleDumper) + else: + yaml.dump(obj_from_stream, stream_obj_from_stream, Dumper=AnsibleDumper, encoding=None) + yaml.dump(obj_from_stream, stream_obj_from_string, Dumper=AnsibleDumper, encoding=None) + + yaml_string_stream_obj_from_stream = stream_obj_from_stream.getvalue() + yaml_string_stream_obj_from_string = stream_obj_from_string.getvalue() + + stream_obj_from_stream.seek(0) + stream_obj_from_string.seek(0) + + if PY3: + yaml_string_obj_from_stream = yaml.dump(obj_from_stream, Dumper=AnsibleDumper) + yaml_string_obj_from_string = yaml.dump(obj_from_string, Dumper=AnsibleDumper) + else: + yaml_string_obj_from_stream = yaml.dump(obj_from_stream, Dumper=AnsibleDumper, encoding=None) + yaml_string_obj_from_string = yaml.dump(obj_from_string, Dumper=AnsibleDumper, encoding=None) + + assert yaml_string == yaml_string_obj_from_stream + assert yaml_string == yaml_string_obj_from_stream == yaml_string_obj_from_string + assert (yaml_string == yaml_string_obj_from_stream == yaml_string_obj_from_string == yaml_string_stream_obj_from_stream == + yaml_string_stream_obj_from_string) + assert obj == obj_from_stream + assert obj == obj_from_string + assert obj == yaml_string_obj_from_stream + assert obj == yaml_string_obj_from_string + assert obj == obj_from_stream == obj_from_string == yaml_string_obj_from_stream == yaml_string_obj_from_string + return {'obj': obj, + 'yaml_string': yaml_string, + 'yaml_string_from_stream': yaml_string_from_stream, + 'obj_from_stream': obj_from_stream, + 'obj_from_string': obj_from_string, + 'yaml_string_obj_from_string': yaml_string_obj_from_string} |