def test_object_caching(self):
# Creating a Feature with the same name as an existing
# Feature must return the existing Feature, if both are
# associated with the same BinaryFeaturesModel.
feature1 = BaseFeature(self.bfm, 'voiced')
feature2 = BaseFeature(self.bfm, 'voiced')
self.assertEqual(feature1, feature2)
feature3 = BaseFeature(self.bfm, 'consonantal')
self.assertNotEqual(feature1, feature3)
bfm2 = BinaryFeaturesModel()
feature4 = BaseFeature(bfm2, 'voiced')
self.assertNotEqual(feature1, feature4)
# It is an error to create a Feature with the same IPA form
# but of a different type (subclass).
self.assertRaises(InvalidFeatureError, SuprasegmentalFeature, self.bfm,
'voiced')
# Initialisation of a Feature should happen only once.
character1 = BaseCharacter(self.bfm, 'a')
character1.set_feature_value(feature1, HAS_FEATURE)
self.assertEqual(feature1.get_value_characters(HAS_FEATURE),
set([character1]))
feature5 = BaseFeature(self.bfm, 'voiced')
self.assertEqual(feature1.get_value_characters(HAS_FEATURE),
set([character1]))
feature6 = SuprasegmentalFeature(self.bfm, 'syllabic')
character2 = SuprasegmentalCharacter(self.bfm, 'b')
character2.set_feature_value(feature6, HAS_FEATURE)
self.assertEqual(feature6.get_value_characters(HAS_FEATURE),
set([character2]))
feature7 = SuprasegmentalFeature(self.bfm, 'syllabic')
self.assertEqual(feature6.get_value_characters(HAS_FEATURE),
set([character2]))
def test_object_caching (self):
# Creating a Feature with the same name as an existing
# Feature must return the existing Feature, if both are
# associated with the same BinaryFeaturesModel.
feature1 = BaseFeature(self.bfm, 'voiced')
feature2 = BaseFeature(self.bfm, 'voiced')
self.assertEqual(feature1, feature2)
feature3 = BaseFeature(self.bfm, 'consonantal')
self.assertNotEqual(feature1, feature3)
bfm2 = BinaryFeaturesModel()
feature4 = BaseFeature(bfm2, 'voiced')
self.assertNotEqual(feature1, feature4)
# It is an error to create a Feature with the same IPA form
# but of a different type (subclass).
self.assertRaises(InvalidFeatureError, SuprasegmentalFeature, self.bfm,
'voiced')
# Initialisation of a Feature should happen only once.
character1 = BaseCharacter(self.bfm, 'a')
character1.set_feature_value(feature1, HAS_FEATURE)
self.assertEqual(feature1.get_value_characters(HAS_FEATURE),
set([character1]))
feature5 = BaseFeature(self.bfm, 'voiced')
self.assertEqual(feature1.get_value_characters(HAS_FEATURE),
set([character1]))
feature6 = SuprasegmentalFeature(self.bfm, 'syllabic')
character2 = SuprasegmentalCharacter(self.bfm, 'b')
character2.set_feature_value(feature6, HAS_FEATURE)
self.assertEqual(feature6.get_value_characters(HAS_FEATURE),
set([character2]))
feature7 = SuprasegmentalFeature(self.bfm, 'syllabic')
self.assertEqual(feature6.get_value_characters(HAS_FEATURE),
set([character2]))
def test_feature_value(self):
character = SuprasegmentalCharacter(self.bfm, 'a')
feature = SuprasegmentalFeature(self.bfm, 'voiced')
character.set_feature_value(feature, HAS_FEATURE)
value = character.get_feature_value(feature)
self.assertEqual(value, HAS_FEATURE)
character.set_feature_value(feature, NOT_HAS_FEATURE)
value = character.get_feature_value(feature)
self.assertEqual(value, NOT_HAS_FEATURE)
def test_feature_value (self):
character = SuprasegmentalCharacter(self.bfm, 'a')
feature = SuprasegmentalFeature(self.bfm, 'voiced')
character.set_feature_value(feature, HAS_FEATURE)
value = character.get_feature_value(feature)
self.assertEqual(value, HAS_FEATURE)
character.set_feature_value(feature, NOT_HAS_FEATURE)
value = character.get_feature_value(feature)
self.assertEqual(value, NOT_HAS_FEATURE)
def test_delete(self):
Feature._cache = {}
self.assertEqual(len(Feature._cache), 0)
feature = SuprasegmentalFeature(self.bfm, 'voiced')
character = SuprasegmentalCharacter(self.bfm, 'a')
character.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(len(Feature._cache), 1)
self.assertEqual(character.get_feature_value(feature), HAS_FEATURE)
feature.delete()
self.assertEqual(len(Feature._cache), 0)
self.assertRaises(MismatchedModelsError, character.get_feature_value,
feature)
def test_delete (self):
Feature._cache = {}
self.assertEqual(len(Feature._cache), 0)
feature = SuprasegmentalFeature(self.bfm, 'voiced')
character = SuprasegmentalCharacter(self.bfm, 'a')
character.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(len(Feature._cache), 1)
self.assertEqual(character.get_feature_value(feature), HAS_FEATURE)
feature.delete()
self.assertEqual(len(Feature._cache), 0)
self.assertRaises(MismatchedModelsError, character.get_feature_value,
feature)
def test_normalised_form_cluster_creation (self):
# Test that the correct subclass of Cluster is created from a
# normalised form.
bfm = BinaryFeaturesModel()
feature1 = BaseFeature(bfm, 'anterior')
feature2 = SuprasegmentalFeature(bfm, 'long')
character1 = BaseCharacter(bfm, 'a')
character1.set_feature_value(feature1, HAS_FEATURE)
character2 = SuprasegmentalCharacter(bfm, 'b')
character2.set_feature_value(feature2, HAS_FEATURE)
nf1 = NormalisedForm('{}{}'.format(BNFM, HAS_FEATURE))
nf2 = NormalisedForm('{}{}'.format(SNFM, HAS_FEATURE))
cluster1 = Cluster(bfm, normalised_form=nf1)
cluster2 = Cluster(bfm, normalised_form=nf2)
self.assertTrue(isinstance(cluster1, BaseCluster))
self.assertTrue(isinstance(cluster2, SuprasegmentalCluster))
self.assertRaises(IllegalArgumentError, Cluster, '')
def test_normalised_form_cluster_creation(self):
# Test that the correct subclass of Cluster is created from a
# normalised form.
bfm = BinaryFeaturesModel()
feature1 = BaseFeature(bfm, 'anterior')
feature2 = SuprasegmentalFeature(bfm, 'long')
character1 = BaseCharacter(bfm, 'a')
character1.set_feature_value(feature1, HAS_FEATURE)
character2 = SuprasegmentalCharacter(bfm, 'b')
character2.set_feature_value(feature2, HAS_FEATURE)
nf1 = NormalisedForm('{}{}'.format(BNFM, HAS_FEATURE))
nf2 = NormalisedForm('{}{}'.format(SNFM, HAS_FEATURE))
cluster1 = Cluster(bfm, normalised_form=nf1)
cluster2 = Cluster(bfm, normalised_form=nf2)
self.assertTrue(isinstance(cluster1, BaseCluster))
self.assertTrue(isinstance(cluster2, SuprasegmentalCluster))
self.assertRaises(IllegalArgumentError, Cluster, '')
def test_normalised_form(self):
feature1 = SuprasegmentalFeature(self.bfm, 'anterior')
character = SuprasegmentalCharacter(self.bfm, 'n')
character.set_feature_value(feature1, HAS_FEATURE)
self.assertEqual(character.normalised_form,
NormalisedForm('{0}{1}'.format(SNFM, HAS_FEATURE)))
# Adding a feature changes the normalised form.
feature2 = SuprasegmentalFeature(self.bfm, 'dental')
# All features must have a value.
self.assertRaises(InvalidCharacterError, getattr, character,
'normalised_form')
character.set_feature_value(feature2, NOT_HAS_FEATURE)
self.assertEqual(
character.normalised_form,
NormalisedForm('{0}{1}{2}'.format(SNFM, HAS_FEATURE,
NOT_HAS_FEATURE)))
# The order of the normalised form feature values is
# alphabetical by feature name.
feature3 = SuprasegmentalFeature(self.bfm, 'consonantal')
character.set_feature_value(feature3, HAS_FEATURE)
self.assertEqual(
character.normalised_form,
NormalisedForm('{0}{1}{1}{2}'.format(SNFM, HAS_FEATURE,
NOT_HAS_FEATURE)))
# Renaming a feature may change the normalised form.
feature3.name = 'vocalic'
self.assertEqual(
character.normalised_form,
NormalisedForm('{0}{1}{2}{1}'.format(SNFM, HAS_FEATURE,
NOT_HAS_FEATURE)))
# Changing a feature value changes the normalised form.
character.set_feature_value(feature1, INAPPLICABLE_FEATURE)
self.assertEqual(
character.normalised_form,
NormalisedForm('{0}{3}{2}{1}'.format(SNFM, HAS_FEATURE,
NOT_HAS_FEATURE,
INAPPLICABLE_FEATURE)))
# Removing a feature value changes the normalised form.
feature3.delete()
self.assertEqual(
character.normalised_form,
NormalisedForm('{0}{2}{1}'.format(SNFM, NOT_HAS_FEATURE,
INAPPLICABLE_FEATURE)))
# Adding a feature of a different type does not change the
# normalised form.
feature4 = BaseFeature(self.bfm, 'syllabic')
self.assertEqual(
character.normalised_form,
NormalisedForm('{0}{2}{1}'.format(SNFM, NOT_HAS_FEATURE,
INAPPLICABLE_FEATURE)))
def test_object_caching (self):
# Creating a Character with the same IPA form as an existing
# Character must return the existing Character, if both are
# associated with the same BinaryFeaturesModel.
character1 = BaseCharacter(self.bfm, 'a')
character2 = BaseCharacter(self.bfm, 'a')
self.assertEqual(character1, character2)
character3 = BaseCharacter(self.bfm, 'b')
self.assertNotEqual(character1, character3)
bfm2 = BinaryFeaturesModel()
character4 = BaseCharacter(bfm2, 'a')
self.assertNotEqual(character1, character4)
# It is an error to create a Character with the same IPA form
# but of a different type (subclass).
self.assertRaises(InvalidCharacterError, DiacriticCharacter,
self.bfm, 'a')
# Initialising of the Character should happen only once.
feature = BaseFeature(self.bfm, 'voiced')
character1.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(character1.get_feature_value(feature), HAS_FEATURE)
character5 = BaseCharacter(self.bfm, 'a')
self.assertEqual(character1.get_feature_value(feature), HAS_FEATURE)
character6 = DiacriticCharacter(self.bfm, 'c')
character6.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(character6.get_feature_value(feature), HAS_FEATURE)
character7 = DiacriticCharacter(self.bfm, 'c')
self.assertEqual(character6.get_feature_value(feature), HAS_FEATURE)
character8 = SpacingCharacter(self.bfm, 'd')
character8.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(character8.get_feature_value(feature), HAS_FEATURE)
character9 = SpacingCharacter(self.bfm, 'd')
self.assertEqual(character8.get_feature_value(feature), HAS_FEATURE)
character10 = SuprasegmentalCharacter(self.bfm, 'e')
feature2 = SuprasegmentalFeature(self.bfm, 'syllabic')
character10.set_feature_value(feature2, HAS_FEATURE)
self.assertEqual(character10.get_feature_value(feature2), HAS_FEATURE)
character11 = SuprasegmentalCharacter(self.bfm, 'e')
self.assertEqual(character10.get_feature_value(feature2), HAS_FEATURE)
def test_object_caching(self):
# Creating a Character with the same IPA form as an existing
# Character must return the existing Character, if both are
# associated with the same BinaryFeaturesModel.
character1 = BaseCharacter(self.bfm, 'a')
character2 = BaseCharacter(self.bfm, 'a')
self.assertEqual(character1, character2)
character3 = BaseCharacter(self.bfm, 'b')
self.assertNotEqual(character1, character3)
bfm2 = BinaryFeaturesModel()
character4 = BaseCharacter(bfm2, 'a')
self.assertNotEqual(character1, character4)
# It is an error to create a Character with the same IPA form
# but of a different type (subclass).
self.assertRaises(InvalidCharacterError, DiacriticCharacter, self.bfm,
'a')
# Initialising of the Character should happen only once.
feature = BaseFeature(self.bfm, 'voiced')
character1.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(character1.get_feature_value(feature), HAS_FEATURE)
character5 = BaseCharacter(self.bfm, 'a')
self.assertEqual(character1.get_feature_value(feature), HAS_FEATURE)
character6 = DiacriticCharacter(self.bfm, 'c')
character6.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(character6.get_feature_value(feature), HAS_FEATURE)
character7 = DiacriticCharacter(self.bfm, 'c')
self.assertEqual(character6.get_feature_value(feature), HAS_FEATURE)
character8 = SpacingCharacter(self.bfm, 'd')
character8.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(character8.get_feature_value(feature), HAS_FEATURE)
character9 = SpacingCharacter(self.bfm, 'd')
self.assertEqual(character8.get_feature_value(feature), HAS_FEATURE)
character10 = SuprasegmentalCharacter(self.bfm, 'e')
feature2 = SuprasegmentalFeature(self.bfm, 'syllabic')
character10.set_feature_value(feature2, HAS_FEATURE)
self.assertEqual(character10.get_feature_value(feature2), HAS_FEATURE)
character11 = SuprasegmentalCharacter(self.bfm, 'e')
self.assertEqual(character10.get_feature_value(feature2), HAS_FEATURE)
def test_normalised_form (self):
feature1 = SuprasegmentalFeature(self.bfm, 'anterior')
character = SuprasegmentalCharacter(self.bfm, 'n')
character.set_feature_value(feature1, HAS_FEATURE)
self.assertEqual(character.normalised_form, NormalisedForm(
'{0}{1}'.format(SNFM, HAS_FEATURE)))
# Adding a feature changes the normalised form.
feature2 = SuprasegmentalFeature(self.bfm, 'dental')
# All features must have a value.
self.assertRaises(InvalidCharacterError, getattr, character,
'normalised_form')
character.set_feature_value(feature2, NOT_HAS_FEATURE)
self.assertEqual(character.normalised_form, NormalisedForm(
'{0}{1}{2}'.format(SNFM, HAS_FEATURE, NOT_HAS_FEATURE)))
# The order of the normalised form feature values is
# alphabetical by feature name.
feature3 = SuprasegmentalFeature(self.bfm, 'consonantal')
character.set_feature_value(feature3, HAS_FEATURE)
self.assertEqual(character.normalised_form, NormalisedForm(
'{0}{1}{1}{2}'.format(SNFM, HAS_FEATURE, NOT_HAS_FEATURE)))
# Renaming a feature may change the normalised form.
feature3.name = 'vocalic'
self.assertEqual(character.normalised_form, NormalisedForm(
'{0}{1}{2}{1}'.format(SNFM, HAS_FEATURE, NOT_HAS_FEATURE)))
# Changing a feature value changes the normalised form.
character.set_feature_value(feature1, INAPPLICABLE_FEATURE)
self.assertEqual(character.normalised_form, NormalisedForm(
'{0}{3}{2}{1}'.format(SNFM, HAS_FEATURE, NOT_HAS_FEATURE,
INAPPLICABLE_FEATURE)))
# Removing a feature value changes the normalised form.
feature3.delete()
self.assertEqual(character.normalised_form, NormalisedForm(
'{0}{2}{1}'.format(SNFM, NOT_HAS_FEATURE,
INAPPLICABLE_FEATURE)))
# Adding a feature of a different type does not change the
# normalised form.
feature4 = BaseFeature(self.bfm, 'syllabic')
self.assertEqual(character.normalised_form, NormalisedForm(
'{0}{2}{1}'.format(SNFM, NOT_HAS_FEATURE,
INAPPLICABLE_FEATURE)))
def test_value_characters(self):
feature = SuprasegmentalFeature(self.bfm, 'voiced')
self.assertEqual(feature.get_value_characters(HAS_FEATURE), set())
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE), set())
character = SuprasegmentalCharacter(self.bfm, 'a')
character.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(feature.get_value_characters(HAS_FEATURE),
set([character]))
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE), set())
character.set_feature_value(feature, NOT_HAS_FEATURE)
self.assertEqual(feature.get_value_characters(HAS_FEATURE), set())
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE),
set([character]))
character.set_feature_value(feature, INAPPLICABLE_FEATURE)
self.assertEqual(feature.get_value_characters(HAS_FEATURE), set())
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE), set())
def test_value_characters (self):
feature = SuprasegmentalFeature(self.bfm, 'voiced')
self.assertEqual(feature.get_value_characters(HAS_FEATURE), set())
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE), set())
character = SuprasegmentalCharacter(self.bfm, 'a')
character.set_feature_value(feature, HAS_FEATURE)
self.assertEqual(feature.get_value_characters(HAS_FEATURE),
set([character]))
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE), set())
character.set_feature_value(feature, NOT_HAS_FEATURE)
self.assertEqual(feature.get_value_characters(HAS_FEATURE), set())
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE),
set([character]))
character.set_feature_value(feature, INAPPLICABLE_FEATURE)
self.assertEqual(feature.get_value_characters(HAS_FEATURE), set())
self.assertEqual(feature.get_value_characters(NOT_HAS_FEATURE), set())
class ClusterTestCase(unittest.TestCase):
def setUp(self):
self.bfm = BinaryFeaturesModel()
self.phrase = SuprasegmentalFeature(self.bfm, 'phrase')
self.stressed = SuprasegmentalFeature(self.bfm, 'stressed')
self.syllabic = SuprasegmentalFeature(self.bfm, 'syllabic')
self.a = SuprasegmentalCharacter(self.bfm, 'a')
self.a.set_feature_value(self.phrase, HAS_FEATURE)
self.a.set_feature_value(self.stressed, INAPPLICABLE_FEATURE)
self.a.set_feature_value(self.syllabic, NOT_HAS_FEATURE)
self.b = SuprasegmentalCharacter(self.bfm, 'b')
self.b.set_feature_value(self.phrase, INAPPLICABLE_FEATURE)
self.b.set_feature_value(self.stressed, NOT_HAS_FEATURE)
self.b.set_feature_value(self.syllabic, INAPPLICABLE_FEATURE)
def test_applier_form(self):
cluster1 = SuprasegmentalCluster(self.bfm,
suprasegmental_characters=[self.a])
af1 = '{0}{1}{2}{3}{4}'.format(AFM, SNFM, HAS_FEATURE,
INAPPLICABLE_FEATURE, NOT_HAS_FEATURE)
self.assertEqual(cluster1.applier_form, af1)
cluster2 = SuprasegmentalCluster(
self.bfm, suprasegmental_characters=[self.a, self.b])
af2 = '{0}{1}{2}{3}{3}'.format(AFM, SNFM, HAS_FEATURE, NOT_HAS_FEATURE)
self.assertEqual(cluster2.applier_form, af2)
def test_normalised_form(self):
cluster1 = SuprasegmentalCluster(self.bfm,
suprasegmental_characters=[self.a])
nf1 = NormalisedForm('{0}{1}{2}{3}'.format(SNFM, HAS_FEATURE,
INAPPLICABLE_FEATURE,
NOT_HAS_FEATURE))
self.assertEqual(cluster1.normalised_form, nf1)
cluster2 = SuprasegmentalCluster(
self.bfm, suprasegmental_characters=[self.a, self.b])
nf2 = NormalisedForm('{0}{1}{2}{2}'.format(SNFM, HAS_FEATURE,
NOT_HAS_FEATURE))
self.assertEqual(cluster2.normalised_form, nf2)
cluster3 = Cluster(self.bfm, normalised_form=nf2)
self.assertEqual(cluster3.normalised_form, nf2)
def test_string_form(self):
cluster1 = SuprasegmentalCluster(self.bfm,
suprasegmental_characters=[self.a])
self.assertEqual(str(cluster1), 'a')
cluster2 = SuprasegmentalCluster(
self.bfm, suprasegmental_characters=[self.a, self.b])
self.assertEqual(str(cluster2), 'ab')
cluster3 = SuprasegmentalCluster(
self.bfm, suprasegmental_characters=[self.b, self.a])
self.assertEqual(str(cluster3), 'ba')
def test_suprasegmental_cluster_creation_illegal(self):
bfm1 = BinaryFeaturesModel()
bfm2 = BinaryFeaturesModel()
character1 = BaseCharacter(bfm1, 'a')
character3 = SuprasegmentalCharacter(bfm1, 'b')
character4 = SuprasegmentalCharacter(bfm2, 'c')
nf1 = NormalisedForm('{}{}'.format(SNFM, HAS_FEATURE))
# A SuprasegmentalCluster must be initialised with at least
# one suprasegmental character or a normalised form.
self.assertRaises(IllegalArgumentError, SuprasegmentalCluster, bfm1)
# A SuprasegmentalCluster must not be initialised with both
# suprasegmental characters and a normalised form.
self.assertRaises(IllegalArgumentError,
SuprasegmentalCluster,
bfm1,
suprasegmental_characters=[character3],
normalised_form=nf1)
# All of the characters in a cluster must be associated with
# the same binary features model.
self.assertRaises(MismatchedModelsError,
SuprasegmentalCluster,
bfm1,
suprasegmental_characters=[character4])
# All of the characters in a cluster must be suprasegmental.
self.assertRaises(MismatchedTypesError,
SuprasegmentalCluster,
bfm1,
suprasegmental_characters=[character1, character3])
class ClusterTestCase (unittest.TestCase):
def setUp (self):
self.bfm = BinaryFeaturesModel()
self.phrase = SuprasegmentalFeature(self.bfm, 'phrase')
self.stressed = SuprasegmentalFeature(self.bfm, 'stressed')
self.syllabic = SuprasegmentalFeature(self.bfm, 'syllabic')
self.a = SuprasegmentalCharacter(self.bfm, 'a')
self.a.set_feature_value(self.phrase, HAS_FEATURE)
self.a.set_feature_value(self.stressed, INAPPLICABLE_FEATURE)
self.a.set_feature_value(self.syllabic, NOT_HAS_FEATURE)
self.b = SuprasegmentalCharacter(self.bfm, 'b')
self.b.set_feature_value(self.phrase, INAPPLICABLE_FEATURE)
self.b.set_feature_value(self.stressed, NOT_HAS_FEATURE)
self.b.set_feature_value(self.syllabic, INAPPLICABLE_FEATURE)
def test_applier_form (self):
cluster1 = SuprasegmentalCluster(self.bfm, suprasegmental_characters=
[self.a])
af1 = '{0}{1}{2}{3}{4}'.format(AFM, SNFM, HAS_FEATURE,
INAPPLICABLE_FEATURE, NOT_HAS_FEATURE)
self.assertEqual(cluster1.applier_form, af1)
cluster2 = SuprasegmentalCluster(self.bfm, suprasegmental_characters=
[self.a, self.b])
af2 = '{0}{1}{2}{3}{3}'.format(AFM, SNFM, HAS_FEATURE, NOT_HAS_FEATURE)
self.assertEqual(cluster2.applier_form, af2)
def test_normalised_form (self):
cluster1 = SuprasegmentalCluster(self.bfm, suprasegmental_characters=
[self.a])
nf1 = NormalisedForm('{0}{1}{2}{3}'.format(
SNFM, HAS_FEATURE, INAPPLICABLE_FEATURE, NOT_HAS_FEATURE))
self.assertEqual(cluster1.normalised_form, nf1)
cluster2 = SuprasegmentalCluster(self.bfm, suprasegmental_characters=
[self.a, self.b])
nf2 = NormalisedForm('{0}{1}{2}{2}'.format(
SNFM, HAS_FEATURE, NOT_HAS_FEATURE))
self.assertEqual(cluster2.normalised_form, nf2)
cluster3 = Cluster(self.bfm, normalised_form=nf2)
self.assertEqual(cluster3.normalised_form, nf2)
def test_string_form (self):
cluster1 = SuprasegmentalCluster(self.bfm, suprasegmental_characters=
[self.a])
self.assertEqual(str(cluster1), 'a')
cluster2 = SuprasegmentalCluster(self.bfm, suprasegmental_characters=
[self.a, self.b])
self.assertEqual(str(cluster2), 'ab')
cluster3 = SuprasegmentalCluster(self.bfm, suprasegmental_characters=
[self.b, self.a])
self.assertEqual(str(cluster3), 'ba')
def test_suprasegmental_cluster_creation_illegal (self):
bfm1 = BinaryFeaturesModel()
bfm2 = BinaryFeaturesModel()
character1 = BaseCharacter(bfm1, 'a')
character3 = SuprasegmentalCharacter(bfm1, 'b')
character4 = SuprasegmentalCharacter(bfm2, 'c')
nf1 = NormalisedForm('{}{}'.format(SNFM, HAS_FEATURE))
# A SuprasegmentalCluster must be initialised with at least
# one suprasegmental character or a normalised form.
self.assertRaises(IllegalArgumentError, SuprasegmentalCluster, bfm1)
# A SuprasegmentalCluster must not be initialised with both
# suprasegmental characters and a normalised form.
self.assertRaises(IllegalArgumentError, SuprasegmentalCluster, bfm1,
suprasegmental_characters=[character3],
normalised_form=nf1)
# All of the characters in a cluster must be associated with
# the same binary features model.
self.assertRaises(MismatchedModelsError, SuprasegmentalCluster, bfm1,
suprasegmental_characters=[character4])
# All of the characters in a cluster must be suprasegmental.
self.assertRaises(MismatchedTypesError, SuprasegmentalCluster, bfm1,
suprasegmental_characters=[character1, character3])
