def test_fixed_imports(self):
source = Source._from_contents(
dedent("""
import btopline
import atopline
""").lstrip())
assert source.fixed_imports == dedent("""
import atopline
import btopline
""").lstrip()
source = Source._from_contents(
dedent("""
import atopline
from django.monkeys import monkeys
from django.chickens import chickens
""").lstrip())
assert source.fixed_imports == dedent("""
import atopline
from django.chickens import chickens
from django.monkeys import monkeys
""").lstrip()
source = Source._from_contents(
dedent("""
from lists.views import thing
import atopline
""").lstrip())
assert source.fixed_imports == dedent("""
import atopline
from lists.views import thing
""").lstrip()
source = Source._from_contents(
dedent("""
from lists.views import thing
from django.db import models
import atopline
from django.aardvarks import Wilbur
""").lstrip())
assert source.fixed_imports == dedent("""
import atopline
from django.aardvarks import Wilbur
from django.db import models
from lists.views import thing
""").lstrip()
def test_add_import_ends_up_in_updated_contents_when_appending(self):
source = Source._from_contents(dedent(
"""
import atopline
# some stuff
class C():
def foo():
return 1
""").lstrip()
)
source.add_imports([
"from django.db import models"
])
assert source.contents == dedent(
"""
import atopline
from django.db import models
# some stuff
class C():
def foo():
return 1
"""
).lstrip()
def test_add_import_ends_up_in_updated_contents_when_prepending(self):
source = Source._from_contents(dedent(
"""
import btopline
# some stuff
class C():
def foo():
return 1
""").lstrip()
)
source.add_imports([
"import atopline"
])
assert source.contents == dedent(
"""
import atopline
import btopline
# some stuff
class C():
def foo():
return 1
"""
).lstrip()
def test_addding_to_class_fixes_indents_and_superfluous_lines(self):
source = Source._from_contents(dedent("""
import topline
class A(object):
def metha(self):
pass
""").lstrip()
)
source.add_to_class('A', [
"",
" def metha2(self):",
" pass",
])
expected = dedent("""
import topline
class A(object):
def metha(self):
pass
def metha2(self):
pass
"""
).lstrip()
assert source.contents == expected
def test_removing_a_function(self):
source = Source._from_contents(
dedent("""
def fn1(args):
# do stuff
pass
def fn2(arg2, arg3):
# do things
return 2
def fn3():
# do nothing
# really
pass
""").lstrip())
expected = dedent("""
def fn1(args):
# do stuff
pass
def fn3():
# do nothing
# really
pass
""").lstrip()
assert source.remove_function('fn2') == expected
assert source.get_updated_contents() == expected
def test_finding_class_info(self):
source = Source._from_contents(
dedent("""
import topline
class ClassA(object):
def metha(self):
pass
def metha2(self):
pass
class ClassB(object):
def methb(self):
pass
""").lstrip())
assert source.classes['ClassA'].start_line == 2
assert source.classes['ClassA'].last_line == 7
assert source.classes['ClassA'].source == dedent("""
class ClassA(object):
def metha(self):
pass
def metha2(self):
pass
""").strip()
assert source.classes['ClassB'].last_line == 11
assert source.classes['ClassB'].source == dedent("""
class ClassB(object):
def methb(self):
pass
""").strip()
def test_addding_to_class_fixes_indents_and_superfluous_lines(self):
source = Source._from_contents(
dedent("""
import topline
class A(object):
def metha(self):
pass
""").lstrip())
source.add_to_class('A', [
"",
" def metha2(self):",
" pass",
])
expected = dedent("""
import topline
class A(object):
def metha(self):
pass
def metha2(self):
pass
""").lstrip()
assert source.contents == expected
def test_finding_last_line_in_function(self):
source = Source._from_contents(dedent("""
def myfn():
a += 1
return b
""").strip()
)
assert source.functions['myfn'].last_line == 2
def test_finding_last_line_in_function(self):
source = Source._from_contents(
dedent("""
def myfn():
a += 1
return b
""").strip())
assert source.functions['myfn'].last_line == 2
def test_function_object(self):
s = Source._from_contents(
dedent("""
def a_function(stuff, args):
pass
"""))
f = s.functions['a_function']
self.assertEqual(f.name, 'a_function')
self.assertEqual(f.full_line, 'def a_function(stuff, args):')
def test_write_writes_new_content_to_path(self):
s = Source()
tf = tempfile.NamedTemporaryFile()
s.get_updated_contents = lambda: 'abc\ndef'
s.path = tf.name
s.write()
with open(tf.name) as f:
self.assertEqual(f.read(), s.get_updated_contents())
def test_function_object(self):
s = Source._from_contents(dedent(
"""
def a_function(stuff, args):
pass
"""
))
f = s.functions['a_function']
self.assertEqual(f.name, 'a_function')
self.assertEqual(f.full_line, 'def a_function(stuff, args):')
def test_find_first_nonimport_line_raises_if_imports_in_a_mess(self):
source = Source._from_contents(
dedent("""
import trees
def foo():
return 'monkeys'
import monkeys
""").lstrip())
with self.assertRaises(SourceUpdateError):
source.find_first_nonimport_line()
def test_from_path_constructor_with_existing_file(self):
tf = tempfile.NamedTemporaryFile(delete=False)
self.addCleanup(tf.close)
tf.write('stuff'.encode('utf8'))
tf.flush()
s = Source.from_path(tf.name)
self.assertIsInstance(s, Source)
self.assertEqual(s.path, tf.name)
self.assertEqual(s.contents, 'stuff')
def test_from_path_constructor_with_existing_file(self):
tf = tempfile.NamedTemporaryFile(delete=False)
self.addCleanup(tf.close)
tf.write('stuff'.encode('utf8'))
tf.flush()
s = Source.from_path(tf.name)
self.assertIsInstance(s, Source)
self.assertEqual(s.path, tf.name)
self.assertEqual(s.contents, 'stuff')
def test_find_first_nonimport_line_raises_if_imports_in_a_mess(self):
source = Source._from_contents(dedent(
"""
import trees
def foo():
return 'monkeys'
import monkeys
""").lstrip()
)
with self.assertRaises(SourceUpdateError):
source.find_first_nonimport_line()
def add_import_and_new_lines(new_lines, old_lines):
source = Source._from_contents('\n'.join(old_lines))
print('add import and new lines')
source.add_imports(new_lines[:1])
lines_with_import = source.get_updated_contents().split('\n')
new_lines_remaining = '\n'.join(new_lines[2:]).strip('\n').split('\n')
start_pos = source.find_start_line(new_lines_remaining)
if start_pos is None:
return '\n'.join(lines_with_import) + '\n\n\n' + '\n'.join(new_lines_remaining)
else:
return _replace_lines_in(lines_with_import, new_lines_remaining)
def test_finds_functions(self):
s = Source._from_contents(
dedent("""
def firstfn(stuff, args):
pass
# stuff
def second_fn():
pass
"""))
assert list(s.functions) == ['firstfn', 'second_fn']
def add_import_and_new_lines(new_lines, old_lines):
source = Source._from_contents('\n'.join(old_lines))
print('add import and new lines')
source.add_imports(new_lines[:1])
lines_with_import = source.get_updated_contents().split('\n')
new_lines_remaining = '\n'.join(new_lines[2:]).strip('\n').split('\n')
start_pos = source.find_start_line(new_lines_remaining)
if start_pos is None:
return '\n'.join(lines_with_import) + '\n\n\n' + '\n'.join(
new_lines_remaining)
else:
return _replace_lines_in(lines_with_import, new_lines_remaining)
def test_find_first_nonimport_line(self):
source = Source._from_contents(
dedent("""
import trees
from django.core.widgets import things, more_things
from django.monkeys import banana_eating
from lists.views import Thing
not_an_import = 'bla'
# the end
""").lstrip())
assert source.find_first_nonimport_line() == 5
def test_finds_classes(self):
s = Source._from_contents(
dedent("""
import thingy
class Jimbob(object):
pass
# stuff
class Harlequin(thingy.Thing):
pass
"""))
assert list(s.classes) == ['Jimbob', 'Harlequin']
def test_finds_functions(self):
s = Source._from_contents(dedent(
"""
def firstfn(stuff, args):
pass
# stuff
def second_fn():
pass
"""
))
assert list(s.functions) == ['firstfn', 'second_fn']
def test_write_writes_new_content_to_path(self):
s = Source()
tf = tempfile.NamedTemporaryFile()
s.get_updated_contents = lambda: 'abc\ndef'
s.path = tf.name
s.write()
with open(tf.name) as f:
self.assertEqual(f.read(), s.get_updated_contents())
def test_find_first_nonimport_line(self):
source = Source._from_contents(dedent(
"""
import trees
from django.core.widgets import things, more_things
from django.monkeys import banana_eating
from lists.views import Thing
not_an_import = 'bla'
# the end
""").lstrip()
)
assert source.find_first_nonimport_line() == 5
def test_finds_classes(self):
s = Source._from_contents(dedent(
"""
import thingy
class Jimbob(object):
pass
# stuff
class Harlequin(thingy.Thing):
pass
"""
))
assert list(s.classes) == ['Jimbob', 'Harlequin']
def test_finding_end_line_depends_on_start(self):
source = Source._from_contents(
dedent("""
stuff
things
bla
more stuff
things
bla
then end
""").lstrip())
assert source.find_end_line(['more stuff', 'things', 'bla']) == 6
def test_finding_last_line_in_function_with_brackets_before_another(self):
source = Source._from_contents(
dedent("""
def myfn():
a += 1
return (
'2'
)
# bla
def anotherfn():
pass
""").strip())
assert source.functions['myfn'].last_line == 4
def test_finding_last_line_in_function_with_brackets_before_another(self):
source = Source._from_contents(dedent("""
def myfn():
a += 1
return (
'2'
)
# bla
def anotherfn():
pass
""").strip()
)
assert source.functions['myfn'].last_line == 4
def test_finding_end_line_depends_on_start(self):
source = Source._from_contents(dedent(
"""
stuff
things
bla
more stuff
things
bla
then end
""").lstrip()
)
assert source.find_end_line(['more stuff', 'things', 'bla']) == 6
def test_add_import(self):
source = Source._from_contents(dedent(
"""
import atopline
from django.monkeys import monkeys
from django.chickens import chickens
from lists.views import thing
# some stuff
class C():
def foo():
return 1
""").lstrip()
)
source.add_imports([
"import btopline"
])
assert source.fixed_imports == dedent(
"""
import atopline
import btopline
from django.chickens import chickens
from django.monkeys import monkeys
from lists.views import thing
"""
).lstrip()
source.add_imports([
"from django.dickens import ChuzzleWit"
])
assert source.fixed_imports == dedent(
"""
import atopline
import btopline
from django.chickens import chickens
from django.dickens import ChuzzleWit
from django.monkeys import monkeys
from lists.views import thing
"""
).lstrip()
def test_changing_the_end_of_a_method(self):
source = Source._from_contents(dedent("""
class A(object):
def method1(self, stuff):
# do step 1
# do step 2
# do step 3
# do step 4
return (
'something'
)
def method2(self):
# do stuff
pass
""").lstrip()
)
new = dedent("""
def method1(self, stuff):
# do step 1
# do step 2
# do step A
return (
'something else'
)
"""
).strip()
expected = dedent("""
class A(object):
def method1(self, stuff):
# do step 1
# do step 2
# do step A
return (
'something else'
)
def method2(self):
# do stuff
pass
"""
).lstrip()
to_write = source.replace_function(new.split('\n'))
assert to_write == expected
assert source.get_updated_contents() == expected
def test_add_import_chooses_longer_lines(self):
source = Source._from_contents(
dedent("""
import atopline
from django.chickens import chickens
from lists.views import thing
# some stuff
""").lstrip())
source.add_imports(["from django.chickens import chickens, eggs"])
assert source.fixed_imports == dedent("""
import atopline
from django.chickens import chickens, eggs
from lists.views import thing
""").lstrip()
def test_changing_the_end_of_a_method(self):
source = Source._from_contents(
dedent("""
class A(object):
def method1(self, stuff):
# do step 1
# do step 2
# do step 3
# do step 4
return (
'something'
)
def method2(self):
# do stuff
pass
""").lstrip())
new = dedent("""
def method1(self, stuff):
# do step 1
# do step 2
# do step A
return (
'something else'
)
""").strip()
expected = dedent("""
class A(object):
def method1(self, stuff):
# do step 1
# do step 2
# do step A
return (
'something else'
)
def method2(self):
# do stuff
pass
""").lstrip()
to_write = source.replace_function(new.split('\n'))
assert to_write == expected
assert source.get_updated_contents() == expected
def test_finds_views(self):
s = Source._from_contents(
dedent("""
def firstfn(stuff, args):
pass
# stuff
def a_view(request):
pass
def second_fn():
pass
def another_view(request, stuff):
pass
"""))
assert list(
s.functions) == ['firstfn', 'a_view', 'second_fn', 'another_view']
assert list(s.views) == ['a_view', 'another_view']
def test_finds_views(self):
s = Source._from_contents(dedent(
"""
def firstfn(stuff, args):
pass
# stuff
def a_view(request):
pass
def second_fn():
pass
def another_view(request, stuff):
pass
"""
))
assert list(s.functions) == ['firstfn', 'a_view', 'second_fn', 'another_view']
assert list(s.views) == ['a_view', 'another_view']
def _replace_lines_in(old_lines, new_lines):
source = Source._from_contents('\n'.join(old_lines))
if new_lines[0].strip() == '':
new_lines.pop(0)
new_lines = dedent('\n'.join(new_lines)).split('\n')
if len(new_lines) == 1:
return _replace_single_line(old_lines, new_lines)
start_pos = source.find_start_line(new_lines)
if start_pos is None:
print('no start line found')
if 'import' in new_lines[0] and 'import' in old_lines[0]:
new_contents = new_lines[0] + '\n'
return new_contents + _replace_lines_in(old_lines[1:],
new_lines[1:])
if VIEW_FINDER.match(new_lines[0]):
if source.views:
view_name = VIEW_FINDER.search(new_lines[0]).group(1)
if view_name in source.views:
return source.replace_function(new_lines)
return '\n'.join(old_lines) + '\n\n' + '\n'.join(new_lines)
class_finder = re.compile(r'^class \w+\(.+\):$', re.MULTILINE)
if class_finder.match(new_lines[0]):
print('found class in input')
if len(source.classes) > 1:
print('found classes')
return '\n'.join(old_lines) + '\n\n\n' + '\n'.join(new_lines)
return '\n'.join(new_lines)
end_pos = source.find_end_line(new_lines)
if end_pos is None:
if new_lines[0].strip().startswith('def '):
return source.replace_function(new_lines)
else:
#TODO: can we get rid of this?
return _replace_lines_from(old_lines, new_lines, start_pos)
else:
return _replace_lines_from_to(old_lines, new_lines, start_pos, end_pos)
def _replace_lines_in(old_lines, new_lines):
source = Source._from_contents('\n'.join(old_lines))
if new_lines[0].strip() == '':
new_lines.pop(0)
new_lines = dedent('\n'.join(new_lines)).split('\n')
if len(new_lines) == 1:
return _replace_single_line(old_lines, new_lines)
start_pos = source.find_start_line(new_lines)
if start_pos is None:
print('no start line found')
if 'import' in new_lines[0] and 'import' in old_lines[0]:
new_contents = new_lines[0] + '\n'
return new_contents + _replace_lines_in(old_lines[1:], new_lines[1:])
if VIEW_FINDER.match(new_lines[0]):
if source.views:
view_name = VIEW_FINDER.search(new_lines[0]).group(1)
if view_name in source.views:
return source.replace_function(new_lines)
return '\n'.join(old_lines) + '\n\n' + '\n'.join(new_lines)
class_finder = re.compile(r'^class \w+\(.+\):$', re.MULTILINE)
if class_finder.match(new_lines[0]):
print('found class in input')
if len(source.classes) > 1:
print('found classes')
return '\n'.join(old_lines) + '\n\n\n' + '\n'.join(new_lines)
return '\n'.join(new_lines)
end_pos = source.find_end_line(new_lines)
if end_pos is None:
if new_lines[0].strip().startswith('def '):
return source.replace_function(new_lines)
else:
#TODO: can we get rid of this?
return _replace_lines_from(old_lines, new_lines, start_pos)
else:
return _replace_lines_from_to(old_lines, new_lines, start_pos, end_pos)
def test_finding_end_line(self):
source = Source._from_contents(
dedent("""
stuff
things
bla
bla bla
indented
more
then end
""").lstrip())
assert source.find_end_line(['stuff', 'things']) == 1
assert source.find_end_line(['bla bla', 'whatever', 'more']) == 5
assert source.find_end_line(['bla bla', 'whatever']) == None
assert source.find_end_line(['no such line', 'whatever']) == None
with self.assertRaises(SourceUpdateError):
source.find_end_line([])
with self.assertRaises(SourceUpdateError):
source.find_end_line(['whatever', ''])
def test_addding_to_class(self):
source = Source._from_contents(dedent("""
import topline
class A(object):
def metha(self):
pass
class B(object):
def methb(self):
pass
""").lstrip()
)
source.add_to_class('A', dedent(
"""
def metha2(self):
pass
""").strip().split('\n')
)
expected = dedent("""
import topline
class A(object):
def metha(self):
pass
def metha2(self):
pass
class B(object):
def methb(self):
pass
"""
).lstrip()
assert source.contents == expected
def test_finding_end_line(self):
source = Source._from_contents(dedent(
"""
stuff
things
bla
bla bla
indented
more
then end
""").lstrip()
)
assert source.find_end_line(['stuff', 'things']) == 1
assert source.find_end_line(['bla bla', 'whatever', 'more']) == 5
assert source.find_end_line(['bla bla', 'whatever']) == None
assert source.find_end_line(['no such line', 'whatever']) == None
with self.assertRaises(SourceUpdateError):
source.find_end_line([])
with self.assertRaises(SourceUpdateError):
source.find_end_line(['whatever',''])
def test_add_import_ends_up_in_updated_contents_when_prepending(self):
source = Source._from_contents(
dedent("""
import btopline
# some stuff
class C():
def foo():
return 1
""").lstrip())
source.add_imports(["import atopline"])
assert source.contents == dedent("""
import atopline
import btopline
# some stuff
class C():
def foo():
return 1
""").lstrip()
def test_finding_different_types_of_import(self):
source = Source._from_contents(dedent(
"""
import trees
from django.core.widgets import things, more_things
import cars
from datetime import datetime
from django.monkeys import banana_eating
from lists.views import Thing
not_an_import = 'import things'
def foo():
# normal code
pass
"""
))
assert set(source.imports) == {
"import trees",
"from django.core.widgets import things, more_things",
"import cars",
"from datetime import datetime",
"from django.monkeys import banana_eating",
"from lists.views import Thing",
}
assert set(source.django_imports) == {
"from django.core.widgets import things, more_things",
"from django.monkeys import banana_eating",
}
assert set(source.project_imports) == {
"from lists.views import Thing",
}
assert set(source.general_imports) == {
"import trees",
"from datetime import datetime",
"import cars",
}
def test_addding_to_class(self):
source = Source._from_contents(
dedent("""
import topline
class A(object):
def metha(self):
pass
class B(object):
def methb(self):
pass
""").lstrip())
source.add_to_class(
'A',
dedent("""
def metha2(self):
pass
""").strip().split('\n'))
expected = dedent("""
import topline
class A(object):
def metha(self):
pass
def metha2(self):
pass
class B(object):
def methb(self):
pass
""").lstrip()
assert source.contents == expected
def test_add_import_ends_up_in_updated_contents_when_appending(self):
source = Source._from_contents(
dedent("""
import atopline
# some stuff
class C():
def foo():
return 1
""").lstrip())
source.add_imports(["from django.db import models"])
assert source.contents == dedent("""
import atopline
from django.db import models
# some stuff
class C():
def foo():
return 1
""").lstrip()
def test_add_import_chooses_longer_lines(self):
source = Source._from_contents(dedent(
"""
import atopline
from django.chickens import chickens
from lists.views import thing
# some stuff
""").lstrip()
)
source.add_imports([
"from django.chickens import chickens, eggs"
])
assert source.fixed_imports == dedent(
"""
import atopline
from django.chickens import chickens, eggs
from lists.views import thing
"""
).lstrip()
def test_finding_different_types_of_import(self):
source = Source._from_contents(
dedent("""
import trees
from django.core.widgets import things, more_things
import cars
from datetime import datetime
from django.monkeys import banana_eating
from lists.views import Thing
not_an_import = 'import things'
def foo():
# normal code
pass
"""))
assert set(source.imports) == {
"import trees",
"from django.core.widgets import things, more_things",
"import cars",
"from datetime import datetime",
"from django.monkeys import banana_eating",
"from lists.views import Thing",
}
assert set(source.django_imports) == {
"from django.core.widgets import things, more_things",
"from django.monkeys import banana_eating",
}
assert set(source.project_imports) == {
"from lists.views import Thing",
}
assert set(source.general_imports) == {
"import trees",
"from datetime import datetime",
"import cars",
}
def test_add_import(self):
source = Source._from_contents(
dedent("""
import atopline
from django.monkeys import monkeys
from django.chickens import chickens
from lists.views import thing
# some stuff
class C():
def foo():
return 1
""").lstrip())
source.add_imports(["import btopline"])
assert source.fixed_imports == dedent("""
import atopline
import btopline
from django.chickens import chickens
from django.monkeys import monkeys
from lists.views import thing
""").lstrip()
source.add_imports(["from django.dickens import ChuzzleWit"])
assert source.fixed_imports == dedent("""
import atopline
import btopline
from django.chickens import chickens
from django.dickens import ChuzzleWit
from django.monkeys import monkeys
from lists.views import thing
""").lstrip()
def test_finding_class_info(self):
source = Source._from_contents(dedent(
"""
import topline
class ClassA(object):
def metha(self):
pass
def metha2(self):
pass
class ClassB(object):
def methb(self):
pass
""").lstrip()
)
assert source.classes['ClassA'].start_line == 2
assert source.classes['ClassA'].last_line == 7
assert source.classes['ClassA'].source == dedent(
"""
class ClassA(object):
def metha(self):
pass
def metha2(self):
pass
""").strip()
assert source.classes['ClassB'].last_line == 11
assert source.classes['ClassB'].source == dedent(
"""
class ClassB(object):
def methb(self):
pass
""").strip()
def test_removing_a_function(self):
source = Source._from_contents(dedent(
"""
def fn1(args):
# do stuff
pass
def fn2(arg2, arg3):
# do things
return 2
def fn3():
# do nothing
# really
pass
""").lstrip()
)
expected = dedent(
"""
def fn1(args):
# do stuff
pass
def fn3():
# do nothing
# really
pass
"""
).lstrip()
assert source.remove_function('fn2') == expected
assert source.get_updated_contents() == expected
def add_to_class(new_lines, old_lines):
print('adding to class')
source = Source._from_contents('\n'.join(old_lines))
classname = re.search(r'class (\w+)\(\w+\):', new_lines[0]).group(1)
source.add_to_class(classname, new_lines[2:])
return source.get_updated_contents()
def test_update_with_empty_contents(self):
s = Source()
s.update('new stuff\n')
self.assertEqual(s.get_updated_contents(), 'new stuff\n')
def test_adds_final_newline_if_necessary(self):
s = Source()
s.update('new stuff')
self.assertEqual(s.get_updated_contents(), 'new stuff\n')
def _write_to_file(path, new_contents):
source = Source.from_path(path)
# strip callouts
new_contents = re.sub(r' +#$', '', new_contents, flags=re.MULTILINE)
new_contents = re.sub(r' +//$', '', new_contents, flags=re.MULTILINE)
if not os.path.exists(path):
dir = os.path.dirname(path)
if not os.path.exists(dir):
os.makedirs(dir)
else:
old_lines = source.lines
new_lines = new_contents.strip('\n').split('\n')
if "[..." not in new_contents:
new_contents = _replace_lines_in(old_lines, new_lines)
else:
if new_contents.count("[...") == 1:
split_line = [l for l in new_lines if "[..." in l][0]
split_line_pos = new_lines.index(split_line)
if split_line_pos == 0:
new_contents = _replace_lines_in(old_lines, new_lines[1:])
elif split_line == new_lines[-1]:
new_contents = _replace_lines_in(old_lines, new_lines[:-1])
elif split_line_pos == 1:
if 'import' in new_lines[0]:
new_contents = add_import_and_new_lines(new_lines, old_lines)
elif 'class' in new_lines[0]:
new_contents = add_to_class(new_lines, old_lines)
else:
lines_before = new_lines[:split_line_pos]
last_line_before = lines_before[-1]
lines_after = new_lines[split_line_pos + 1:]
last_old_line = [
l for l in old_lines if l.strip() == last_line_before.strip()
][0]
last_old_line_pos = old_lines.index(last_old_line)
old_lines_after = old_lines[last_old_line_pos + 1:]
# special-case: stray browser.quit in chap. 2
if 'rest of comments' in split_line:
assert 'browser.quit()' in [l.strip() for l in old_lines_after]
assert old_lines_after[-2] == 'browser.quit()'
old_lines_after = old_lines_after[:-2]
new_contents = '\n'.join(
lines_before +
[get_indent(split_line) + l for l in old_lines_after] +
lines_after
)
elif new_contents.strip().startswith("[...]") and new_contents.endswith("[...]"):
new_contents = _replace_lines_in(old_lines, new_lines[1:-1])
else:
raise Exception("I don't know how to deal with this")
# strip trailing whitespace
new_contents = re.sub(r'^ +$', '', new_contents, flags=re.MULTILINE)
source.update(new_contents)
source.write()
def test_lines(self):
s = Source()
s.contents = 'abc\ndef'
self.assertEqual(s.lines, ['abc', 'def'])
def test_adds_final_newline_if_necessary(self):
s = Source()
s.update('new stuff')
self.assertEqual(s.get_updated_contents(), 'new stuff\n')
def test_update_with_empty_contents(self):
s = Source()
s.update('new stuff\n')
self.assertEqual(s.get_updated_contents(), 'new stuff\n')
def test_lines(self):
s = Source()
s.contents = 'abc\ndef'
self.assertEqual(s.lines, ['abc', 'def'])
def _write_to_file(path, new_contents):
source = Source.from_path(path)
# strip callouts
new_contents = re.sub(r' +#$', '', new_contents, flags=re.MULTILINE)
new_contents = re.sub(r' +//$', '', new_contents, flags=re.MULTILINE)
if not os.path.exists(path):
dir = os.path.dirname(path)
if not os.path.exists(dir):
os.makedirs(dir)
else:
old_lines = source.lines
new_lines = new_contents.strip('\n').split('\n')
if "[..." not in new_contents:
new_contents = _replace_lines_in(old_lines, new_lines)
else:
if new_contents.count("[...") == 1:
split_line = [l for l in new_lines if "[..." in l][0]
split_line_pos = new_lines.index(split_line)
if split_line_pos == 0:
new_contents = _replace_lines_in(old_lines, new_lines[1:])
elif split_line == new_lines[-1]:
new_contents = _replace_lines_in(old_lines, new_lines[:-1])
elif split_line_pos == 1:
if 'import' in new_lines[0]:
new_contents = add_import_and_new_lines(
new_lines, old_lines)
elif 'class' in new_lines[0]:
new_contents = add_to_class(new_lines, old_lines)
else:
lines_before = new_lines[:split_line_pos]
last_line_before = lines_before[-1]
lines_after = new_lines[split_line_pos + 1:]
last_old_line = [
l for l in old_lines
if l.strip() == last_line_before.strip()
][0]
last_old_line_pos = old_lines.index(last_old_line)
old_lines_after = old_lines[last_old_line_pos + 1:]
# special-case: stray browser.quit in chap. 2
if 'rest of comments' in split_line:
assert 'browser.quit()' in [
l.strip() for l in old_lines_after
]
assert old_lines_after[-2] == 'browser.quit()'
old_lines_after = old_lines_after[:-2]
new_contents = '\n'.join(
lines_before +
[get_indent(split_line) + l
for l in old_lines_after] + lines_after)
elif new_contents.strip().startswith(
"[...]") and new_contents.endswith("[...]"):
new_contents = _replace_lines_in(old_lines, new_lines[1:-1])
else:
raise Exception("I don't know how to deal with this")
# strip trailing whitespace
new_contents = re.sub(r'^ +$', '', new_contents, flags=re.MULTILINE)
source.update(new_contents)
source.write()
def test_from_path_constructor_with_nonexistent_file(self):
s = Source.from_path('no.such.path')
self.assertIsInstance(s, Source)
self.assertEqual(s.path, 'no.such.path')
self.assertEqual(s.contents, '')
def test_fixed_imports(self):
source = Source._from_contents(dedent(
"""
import btopline
import atopline
""").lstrip()
)
assert source.fixed_imports == dedent(
"""
import atopline
import btopline
""").lstrip()
source = Source._from_contents(dedent(
"""
import atopline
from django.monkeys import monkeys
from django.chickens import chickens
""").lstrip()
)
assert source.fixed_imports == dedent(
"""
import atopline
from django.chickens import chickens
from django.monkeys import monkeys
""").lstrip()
source = Source._from_contents(dedent(
"""
from lists.views import thing
import atopline
""").lstrip()
)
assert source.fixed_imports == dedent(
"""
import atopline
from lists.views import thing
""").lstrip()
source = Source._from_contents(dedent(
"""
from lists.views import thing
from django.db import models
import atopline
from django.aardvarks import Wilbur
""").lstrip()
)
assert source.fixed_imports == dedent(
"""
import atopline
from django.aardvarks import Wilbur
from django.db import models
from lists.views import thing
""").lstrip()
