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test_rename.py
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test_rename.py
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# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
#
# pyre-strict
from libcst.codemod import CodemodTest
from libcst.codemod.commands.rename import RenameCommand
class TestRenameCommand(CodemodTest):
TRANSFORM = RenameCommand
def test_rename_name(self) -> None:
before = """
from foo import bar
def test() -> None:
bar(5)
"""
after = """
from baz import qux
def test() -> None:
qux(5)
"""
self.assertCodemod(before, after, old_name="foo.bar", new_name="baz.qux")
def test_rename_name_asname(self) -> None:
before = """
from foo import bar as bla
def test() -> None:
bla(5)
"""
after = """
from baz import qux
def test() -> None:
qux(5)
"""
self.assertCodemod(
before,
after,
old_name="foo.bar",
new_name="baz.qux",
)
def test_rename_repeated_name_with_asname(self) -> None:
before = """
from foo import foo as bla
def test() -> None:
bla.bla(5)
"""
after = """
from baz import qux
def test() -> None:
qux.bla(5)
"""
self.assertCodemod(
before,
after,
old_name="foo.foo",
new_name="baz.qux",
)
def test_rename_attr(self) -> None:
before = """
import a.b
def test() -> None:
a.b.c(5)
"""
after = """
import d.e
def test() -> None:
d.e.f(5)
"""
self.assertCodemod(
before,
after,
old_name="a.b.c",
new_name="d.e.f",
)
def test_rename_attr_asname(self) -> None:
before = """
import foo as bar
def test() -> None:
bar.qux(5)
"""
after = """
import baz
def test() -> None:
baz.quux(5)
"""
self.assertCodemod(
before,
after,
old_name="foo.qux",
new_name="baz.quux",
)
def test_rename_module_import(self) -> None:
before = """
import a.b
class Foo(a.b.C):
pass
"""
after = """
import c.b
class Foo(c.b.C):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.b",
new_name="c.b",
)
def test_rename_module_import_2(self) -> None:
before = """
import a.b
class Foo(a.b.C):
pass
"""
after = """
import c.b
class Foo(c.b.C):
pass
"""
self.assertCodemod(
before,
after,
old_name="a",
new_name="c",
)
def test_rename_module_import_no_change(self) -> None:
# Full qualified names don't match, so don't codemod
before = """
import a.b
class Foo(a.b.C):
pass
"""
self.assertCodemod(
before,
before,
old_name="b",
new_name="c.b",
)
def test_rename_module_import_from(self) -> None:
before = """
from a import b
class Foo(b.C):
pass
"""
after = """
from c import b
class Foo(b.C):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.b",
new_name="c.b",
)
def test_rename_module_import_from_2(self) -> None:
before = """
from a import b
class Foo(b.C):
pass
"""
after = """
from c import b
class Foo(b.C):
pass
"""
self.assertCodemod(
before,
after,
old_name="a",
new_name="c",
)
def test_rename_class(self) -> None:
before = """
from a.b import some_class
class Foo(some_class):
pass
"""
after = """
from c.b import some_class
class Foo(some_class):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.b.some_class",
new_name="c.b.some_class",
)
def test_rename_importfrom_same_module(self) -> None:
before = """
from a.b import Class_1, Class_2
class Foo(Class_1):
pass
"""
after = """
from a.b import Class_3, Class_2
class Foo(Class_3):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.b.Class_1",
new_name="a.b.Class_3",
)
def test_rename_importfrom_same_module_2(self) -> None:
before = """
from a.b import module_1, module_2
class Foo(module_1.Class_1):
pass
class Fooo(module_2.Class_2):
pass
"""
after = """
from a.b import module_2
from a.b.module_3 import Class_3
class Foo(Class_3):
pass
class Fooo(module_2.Class_2):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.b.module_1.Class_1",
new_name="a.b.module_3.Class_3",
)
def test_rename_local_variable(self) -> None:
before = """
x = 5
y = 5 + x
"""
after = """
z = 5
y = 5 + z
"""
self.assertCodemod(
before,
after,
old_name="x",
new_name="z",
)
def test_module_does_not_change(self) -> None:
before = """
from a import b
class Foo(b):
pass
"""
after = """
from a import c
class Foo(c):
pass
"""
self.assertCodemod(before, after, old_name="a.b", new_name="a.c")
def test_other_imports_untouched(self) -> None:
before = """
import a, b, c
class Foo(a.z):
bar: b.bar
baz: c.baz
"""
after = """
import d, b, c
class Foo(d.z):
bar: b.bar
baz: c.baz
"""
self.assertCodemod(
before,
after,
old_name="a.z",
new_name="d.z",
)
def test_other_import_froms_untouched(self) -> None:
before = """
from a import b, c, d
class Foo(b):
bar: c.bar
baz: d.baz
"""
after = """
from a import c, d
from f import b
class Foo(b):
bar: c.bar
baz: d.baz
"""
self.assertCodemod(
before,
after,
old_name="a.b",
new_name="f.b",
)
def test_no_removal_of_import_in_use(self) -> None:
before = """
import a
class Foo(a.b):
pass
class Foo2(a.c):
pass
"""
after = """
import a, z
class Foo(z.b):
pass
class Foo2(a.c):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.b",
new_name="z.b",
)
def test_no_removal_of_dotted_import_in_use(self) -> None:
before = """
import a.b
class Foo(a.b.c):
pass
class Foo2(a.b.d):
pass
"""
after = """
import a.b, z.b
class Foo(z.b.c):
pass
class Foo2(a.b.d):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.b.c",
new_name="z.b.c",
)
def test_no_removal_of_import_from_in_use(self) -> None:
before = """
from a import b
class Foo(b.some_class):
bar: b.some_other_class
"""
after = """
from a import b
from blah import some_class
class Foo(some_class):
bar: b.some_other_class
"""
self.assertCodemod(
before,
after,
old_name="a.b.some_class",
new_name="blah.some_class",
)
def test_other_unused_imports_untouched(self) -> None:
before = """
import a
import b
class Foo(a.obj):
pass
"""
after = """
import c
import b
class Foo(c.obj):
pass
"""
self.assertCodemod(
before,
after,
old_name="a.obj",
new_name="c.obj",
)
def test_complex_module_rename(self) -> None:
before = """
from a.b.c import d
class Foo(d.e.f):
pass
"""
after = """
from g.h.i import j
class Foo(j):
pass
"""
self.assertCodemod(before, after, old_name="a.b.c.d.e.f", new_name="g.h.i.j")
def test_complex_module_rename_with_asname(self) -> None:
before = """
from a.b.c import d as ddd
class Foo(ddd.e.f):
pass
"""
after = """
from g.h.i import j
class Foo(j):
pass
"""
self.assertCodemod(before, after, old_name="a.b.c.d.e.f", new_name="g.h.i.j")
def test_names_with_repeated_substrings(self) -> None:
before = """
from aa import aaaa
class Foo(aaaa.Bar):
pass
"""
after = """
from b import c
class Foo(c.Bar):
pass
"""
self.assertCodemod(
before,
after,
old_name="aa.aaaa",
new_name="b.c",
)
def test_repeated_name(self) -> None:
before = """
from foo import foo
def bar():
foo(5)
"""
after = """
from qux import qux
def bar():
qux(5)
"""
self.assertCodemod(
before,
after,
old_name="foo.foo",
new_name="qux.qux",
)
def test_no_codemod(self) -> None:
before = """
from foo import bar
def baz():
bar(5)
"""
self.assertCodemod(
before,
before,
old_name="bar",
new_name="qux",
)
def test_rename_import_prefix(self) -> None:
before = """
import a.b.c.d
"""
after = """
import x.y.c.d
"""
self.assertCodemod(
before,
after,
old_name="a.b",
new_name="x.y",
)
def test_rename_import_from_prefix(self) -> None:
before = """
from a.b.c.d import foo
"""
after = """
from x.y.c.d import foo
"""
self.assertCodemod(
before,
after,
old_name="a.b",
new_name="x.y",
)
def test_rename_multiple_occurrences(self) -> None:
before = """
from a import b
class Foo(b.some_class):
pass
class Foobar(b.some_class):
pass
"""
after = """
from c.d import some_class
class Foo(some_class):
pass
class Foobar(some_class):
pass
"""
self.assertCodemod(
before, after, old_name="a.b.some_class", new_name="c.d.some_class"
)
def test_rename_multiple_imports(self) -> None:
before = """
import a
from a import b
from a.c import d
class Foo(d):
pass
class Fooo(b.some_class):
pass
class Foooo(a.some_class):
pass
"""
after = """
import z
from z import b
from z.c import d
class Foo(d):
pass
class Fooo(b.some_class):
pass
class Foooo(z.some_class):
pass
"""
self.assertCodemod(before, after, old_name="a", new_name="z")
def test_input_with_colon_sep(self) -> None:
before = """
from a.b.c import d
class Foo(d.e.f):
pass
"""
after = """
from g.h import i
class Foo(i.j):
pass
"""
self.assertCodemod(before, after, old_name="a.b.c.d.e.f", new_name="g.h:i.j")
def test_input_with_colon_sep_at_the_end(self) -> None:
before = """
from a.b.c import d
class Foo(d.e):
pass
"""
after = """
import g.h.i.j
class Foo(g.h.i.j.e):
pass
"""
self.assertCodemod(before, after, old_name="a.b.c.d", new_name="g.h.i.j:")
def test_input_with_colon_sep_at_the_front(self) -> None:
# This case should treat it as if no colon separator.
before = """
from a.b.c import d
class Foo(d.e):
pass
"""
after = """
from g.h.i import j
class Foo(j.e):
pass
"""
self.assertCodemod(before, after, old_name="a.b.c.d", new_name=":g.h.i.j")
def test_no_change_because_no_match_was_found(self) -> None:
before = """
from foo import bar
bar(42)
"""
self.assertCodemod(before, before, old_name="baz.bar", new_name="qux.bar")
def test_rename_single_with_colon(self) -> None:
before = """
from a.b import qux
print(qux)
"""
after = """
from a import b
print(b.qux)
"""
self.assertCodemod(
before,
after,
old_name="a.b.qux",
new_name="a:b.qux",
)