def test_it_doesnt_care_if_no_config_file(self):
config_util = ConfigUtil()
fake_find_config_file = fudge.Fake("find_config_file").expects_call().returns(None)
fake_apply_config_file = fudge.Fake("apply_config_file")
with fudge.patched_context(config_util, 'find_config_file', fake_find_config_file):
with fudge.patched_context(config_util, 'apply_config_file', fake_apply_config_file):
config_util.use_config_file()
def test_it_applies_config_file_if_one_is_found(self):
config_util = ConfigUtil()
config_file = fudge.Fake("config_file")
fake_find_config_file = fudge.Fake("find_config_file").expects_call().returns(config_file)
fake_apply_config_file = fudge.Fake("apply_config_file").expects_call().with_args(config_file)
with fudge.patched_context(config_util, 'find_config_file', fake_find_config_file):
with fudge.patched_context(config_util, 'apply_config_file', fake_apply_config_file):
config_util.use_config_file()
def test_it_sets_options_from_an_json_file(self):
contents = """
{ "a" : "stuff"
, "b" : "things"
}
"""
with a_temp_file(contents) as filename:
config_util = ConfigUtil()
config_util.values |should| equal_to({})
config_util.apply_config_file(filename)
config_util.values |should| equal_to({"a":"stuff", "b":"things"})
def test_config_util_initialisation():
'''Test ConfigUtil initialises properly'''
template = fudge.Fake("template")
config_util = ConfigUtil(template)
config_util.values |should| equal_to({})
config_util.template |should| be(template)
class Test_ConfigUtil_FindingConfigFile(object):
'''Test that the ConfigUtil class knows corner cases of finding a config file'''
def setUp(self):
self.config_util = ConfigUtil()
self.fullpath = fudge.Fake('fullpath')
self.filename = fudge.Fake('filename')
@fudge.patch('os.path.exists', 'os.path.abspath')
def test_it_complains_if_config_file_doesnt_exist(self, fake_exists, fake_abspath):
self.config_util.values['config_file'] = self.filename
fake_abspath.expects_call().with_args(self.filename).returns(self.fullpath)
fake_exists.expects_call().with_args(self.fullpath).returns(False)
finder = lambda : self.config_util.find_config_file()
finder |should| throw(MissingConfigFile, "Config file doesn't exist at fake:fullpath")
@fudge.patch('os.path.exists', 'os.path.abspath')
def test_it_defaults_to_noyjson(self, fake_exists, fake_abspath):
fake_abspath.expects_call().with_args('noy.json').returns(self.fullpath)
fake_exists.expects_call().with_args(self.fullpath).returns(True)
self.config_util.find_config_file() |should| equal_to(self.fullpath)
@fudge.patch('os.path.exists', 'os.path.abspath')
def test_it_doesnt_care_if_default_doesnt_exist(self, fake_exists, fake_abspath):
fake_abspath.expects_call().with_args('noy.json').returns(self.fullpath)
fake_exists.expects_call().with_args(self.fullpath).returns(False)
self.config_util.find_config_file() |should| equal_to(None)
@fudge.patch('os.path.exists', 'os.path.abspath')
def test_it_doesnt_care_if_provided_default_doesnt_exist(self, fake_exists, fake_abspath):
self.config_util.values['config_file'] = Default(self.filename)
fake_abspath.expects_call().with_args(self.filename).returns(self.fullpath)
fake_exists.expects_call().with_args(self.fullpath).returns(False)
self.config_util.find_config_file() |should| equal_to(None)
def test_it_raises_attributeError_when_key_doesnt_exist(self):
config_util = ConfigUtil()
config_util.values = {"a":1}
config_util.find_value("a") |should| be(1)
finder = lambda : config_util.find_value("b")
finder |should| throw(AttributeError, "Config has no value for b")
def test_it_doesnt_override_existing_non_default_values(self):
contents = """
{ "a" : "stuff"
, "b" : "things"
, "c" : "and"
, "d" : "shells"
, "e-f" : "blah"
, "g-h" : "other"
}
"""
with a_temp_file(contents) as filename:
config_util = ConfigUtil()
c_val = Default(21)
config_util.use_options({'b':21, 'c':c_val, 'd':None, "g-h":"meh"})
config_util.values |should| equal_to({'b':21, 'c':c_val, 'd':None, "g_h":"meh"})
config_util.apply_config_file(filename)
config_util.values |should| equal_to({"a":"stuff", "b":21, "c":"and", 'd':None, "e_f":"blah", "g_h":"meh"})
def setUp(self):
self.config_util = ConfigUtil()
self.fullpath = fudge.Fake('fullpath')
self.filename = fudge.Fake('filename')
def setup(self):
self.config_util = ConfigUtil()
self.config_util.values |should| equal_to({})
class Test_ConfigUtil_UsingOptions(object):
'''Make sure it knows how to use options'''
def setup(self):
self.config_util = ConfigUtil()
self.config_util.values |should| equal_to({})
def test_it_puts_options_in_values(self):
self.config_util.use_options({"a":1, "b":2})
self.config_util.values |should| equal_to({"a":1, "b":2})
def test_it_overrides_all_values(self):
c_val = Default(3)
self.config_util.use_options({"a":1, "b":2, "c":c_val})
self.config_util.values |should| equal_to({"a":1, "b":2, "c":c_val})
self.config_util.use_options({"b":4, "c":5, "d":6})
self.config_util.values |should| equal_to({"a":1, "b":4, "c":5, "d":6})
def test_it_normalises_keys(self):
self.config_util.use_options({"a-b":1, "c_d":2, "e-f_g-h":3})
self.config_util.values |should| equal_to({"a_b":1, "c_d":2, "e_f_g_h":3})
def test_it_uses_extractor_if_provided(self):
template = fudge.Fake("template")
def extractor(templ, values):
templ |should| be(template)
for key, val in values.items():
yield "e-{}".format(key), val + 1
self.config_util.template = template
self.config_util.use_options({"a":1, "b":2, "c":3}, extractor=extractor)
self.config_util.values |should| equal_to({"e_a":2, "e_b":3, "e_c":4})
def test_it_works_with_list_of_tuples(self):
c_val = Default(3)
self.config_util.use_options([("a",1), ("b",2), ("c",c_val)])
self.config_util.values |should| equal_to({"a":1, "b":2, "c":c_val})
def test_it_doesnt_complain_if_extractor_returns_none(self):
'''It's valid for the extractor to say there are no values'''
template = fudge.Fake("template")
def extractor(templ, values):
templ |should| be(template)
return None
self.config_util.template = template
self.config_util.use_options({"a":1, "b":2, "c":3}, extractor=extractor)
self.config_util.values |should| equal_to({})
def test_it_returns_value_as_is(self):
val = fudge.Fake("val")
config_util = ConfigUtil()
config_util.values = {"c":val}
config_util.find_value("c") |should| be(val)
def test_it_returns_actual_value_if_finds_default(self):
config_util = ConfigUtil()
config_util.values = {"a":Default(21)}
config_util.find_value("a") |should| be(21)
def test_config_util_normalising_keys():
'''Test ConfigUtil knows how to normalise a key'''
config_util = ConfigUtil()
config_util.normalise_key("blah") |should| equal_to("blah")
config_util.normalise_key("blah_stuff-things") |should| equal_to("blah_stuff_things")
config_util.normalise_key("blah-stuff-things") |should| equal_to("blah_stuff_things")