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import cobble
from nose.tools import assert_equal, istest
from mammoth import documents, transforms
from mammoth.transforms import get_descendants, get_descendants_of_type, _each_element
@istest
class ParagraphTests(object):
@istest
def paragraph_is_transformed(self):
paragraph = documents.paragraph(children=[])
result = transforms.paragraph(lambda _: documents.tab())(paragraph)
assert_equal(documents.tab(), result)
@istest
def non_paragraph_elements_are_not_transformed(self):
run = documents.run(children=[])
result = transforms.paragraph(lambda _: documents.tab())(run)
assert_equal(documents.run(children=[]), result)
@istest
class RunTests(object):
@istest
def run_is_transformed(self):
run = documents.run(children=[])
result = transforms.run(lambda _: documents.tab())(run)
assert_equal(documents.tab(), result)
@istest
def non_paragraph_elements_are_not_transformed(self):
paragraph = documents.paragraph(children=[])
result = transforms.run(lambda _: documents.tab())(paragraph)
assert_equal(documents.paragraph(children=[]), result)
@istest
class EachElementTests(object):
@istest
def all_descendants_are_transformed(self):
@cobble.data
class Count(documents.HasChildren):
count = cobble.field()
root = Count(count=None, children=[
Count(count=None, children=[
Count(count=None, children=[]),
]),
])
current_count = [0]
def set_count(node):
current_count[0] += 1
return node.copy(count=current_count[0])
result = _each_element(set_count)(root)
assert_equal(Count(count=3, children=[
Count(count=2, children=[
Count(count=1, children=[]),
]),
]), result)
@istest
class GetDescendantsTests(object):
@istest
def returns_nothing_if_element_type_has_no_children(self):
assert_equal([], get_descendants(documents.tab()))
@istest
def returns_nothing_if_element_has_empty_children(self):
assert_equal([], get_descendants(documents.paragraph(children=[])))
@istest
def includes_children(self):
children = [documents.text("child 1"), documents.text("child 2")]
element = documents.paragraph(children=children)
assert_equal(children, get_descendants(element))
@istest
def includes_indirect_descendants(self):
grandchild = documents.text("grandchild")
child = documents.run(children=[grandchild])
element = documents.paragraph(children=[child])
assert_equal([grandchild, child], get_descendants(element))
@istest
class GetDescendantsOfTypeTests(object):
@istest
def filters_descendants_to_type(self):
tab = documents.tab()
run = documents.run(children=[])
element = documents.paragraph(children=[tab, run])
assert_equal([run], get_descendants_of_type(element, documents.Run))
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