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RustPython/scripts/update_lib/tests/test_patch_spec.py at 0.6.0 · RustPython/RustPython · GitHub
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test_patch_spec.py
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"""Tests for patch_spec.py - core patch extraction and application."""
import
ast
import
unittest
from
update_lib
.
patch_spec
import
(
COMMENT
,
PatchSpec
,
UtMethod
,
_find_import_insert_line
,
apply_patches
,
extract_patches
,
iter_tests
,
)
class
TestIterTests
(
unittest
.
TestCase
):
"""Tests for iter_tests function."""
def
test_iter_tests_simple
(
self
):
"""Test iterating over test methods in a class."""
code
=
"""
class TestFoo(unittest.TestCase):
def test_one(self):
pass
def test_two(self):
pass
"""
tree
=
ast
.
parse
(
code
)
results
=
list
(
iter_tests
(
tree
))
self
.
assertEqual
(
len
(
results
),
2
)
self
.
assertEqual
(
results
[
0
][
0
].
name
,
"TestFoo"
)
self
.
assertEqual
(
results
[
0
][
1
].
name
,
"test_one"
)
self
.
assertEqual
(
results
[
1
][
1
].
name
,
"test_two"
)
def
test_iter_tests_multiple_classes
(
self
):
"""Test iterating over multiple test classes."""
code
=
"""
class TestFoo(unittest.TestCase):
def test_foo(self):
pass
class TestBar(unittest.TestCase):
def test_bar(self):
pass
"""
tree
=
ast
.
parse
(
code
)
results
=
list
(
iter_tests
(
tree
))
self
.
assertEqual
(
len
(
results
),
2
)
self
.
assertEqual
(
results
[
0
][
0
].
name
,
"TestFoo"
)
self
.
assertEqual
(
results
[
1
][
0
].
name
,
"TestBar"
)
def
test_iter_tests_async
(
self
):
"""Test iterating over async test methods."""
code
=
"""
class TestAsync(unittest.TestCase):
async def test_async(self):
pass
"""
tree
=
ast
.
parse
(
code
)
results
=
list
(
iter_tests
(
tree
))
self
.
assertEqual
(
len
(
results
),
1
)
self
.
assertEqual
(
results
[
0
][
1
].
name
,
"test_async"
)
class
TestExtractPatches
(
unittest
.
TestCase
):
"""Tests for extract_patches function."""
def
test_extract_expected_failure
(
self
):
"""Test extracting @unittest.expectedFailure decorator."""
code
=
f"""
class TestFoo(unittest.TestCase):
#
{
COMMENT
}
@unittest.expectedFailure
def test_one(self):
pass
"""
patches
=
extract_patches
(
code
)
self
.
assertIn
(
"TestFoo"
,
patches
)
self
.
assertIn
(
"test_one"
,
patches
[
"TestFoo"
])
specs
=
patches
[
"TestFoo"
][
"test_one"
]
self
.
assertEqual
(
len
(
specs
),
1
)
self
.
assertEqual
(
specs
[
0
].
ut_method
,
UtMethod
.
ExpectedFailure
)
def
test_extract_expected_failure_inline_comment
(
self
):
"""Test extracting expectedFailure with inline comment."""
code
=
f"""
class TestFoo(unittest.TestCase):
@unittest.expectedFailure #
{
COMMENT
}
def test_one(self):
pass
"""
patches
=
extract_patches
(
code
)
self
.
assertIn
(
"TestFoo"
,
patches
)
self
.
assertIn
(
"test_one"
,
patches
[
"TestFoo"
])
def
test_extract_skip_with_reason
(
self
):
"""Test extracting @unittest.skip with reason."""
code
=
f'''
class TestFoo(unittest.TestCase):
@unittest.skip("
{
COMMENT
}
; not implemented")
def test_one(self):
pass
'''
patches
=
extract_patches
(
code
)
self
.
assertIn
(
"TestFoo"
,
patches
)
specs
=
patches
[
"TestFoo"
][
"test_one"
]
self
.
assertEqual
(
specs
[
0
].
ut_method
,
UtMethod
.
Skip
)
self
.
assertIn
(
"not implemented"
,
specs
[
0
].
reason
)
def
test_extract_skip_if
(
self
):
"""Test extracting @unittest.skipIf decorator."""
code
=
f'''
class TestFoo(unittest.TestCase):
@unittest.skipIf(sys.platform == "win32", "
{
COMMENT
}
; windows issue")
def test_one(self):
pass
'''
patches
=
extract_patches
(
code
)
specs
=
patches
[
"TestFoo"
][
"test_one"
]
self
.
assertEqual
(
specs
[
0
].
ut_method
,
UtMethod
.
SkipIf
)
# ast.unparse normalizes quotes to single quotes
self
.
assertIn
(
"sys.platform"
,
specs
[
0
].
cond
)
self
.
assertIn
(
"win32"
,
specs
[
0
].
cond
)
def
test_no_patches_without_comment
(
self
):
"""Test that decorators without COMMENT are not extracted."""
code
=
"""
class TestFoo(unittest.TestCase):
@unittest.expectedFailure
def test_one(self):
pass
"""
patches
=
extract_patches
(
code
)
self
.
assertEqual
(
patches
, {})
def
test_multiple_patches_same_method
(
self
):
"""Test extracting multiple decorators on same method."""
code
=
f'''
class TestFoo(unittest.TestCase):
#
{
COMMENT
}
@unittest.expectedFailure
@unittest.skip("
{
COMMENT
}
; reason")
def test_one(self):
pass
'''
patches
=
extract_patches
(
code
)
specs
=
patches
[
"TestFoo"
][
"test_one"
]
self
.
assertEqual
(
len
(
specs
),
2
)
def
test_comment_confusion
(
self
):
"""
Test that we only extract our patches when CPython set one of the UT methods,
that we search for
"""
code
=
f"""
class TestFoo(unittest.TestCase):
@unittest.expectedSuccess #
{
COMMENT
}
; reason
@unittest.expectedFailure
def test_one(self):
pass
"""
patches
=
extract_patches
(
code
)
specs
=
patches
[
"TestFoo"
][
"test_one"
]
self
.
assertEqual
(
len
(
specs
),
1
)
spec
=
specs
[
0
]
self
.
assertEqual
(
spec
,
PatchSpec
(
ut_method
=
UtMethod
.
ExpectedSuccess
,
cond
=
None
,
reason
=
"reason"
),
)
class
TestApplyPatches
(
unittest
.
TestCase
):
"""Tests for apply_patches function."""
def
test_apply_expected_failure
(
self
):
"""Test applying @unittest.expectedFailure."""
code
=
"""import unittest
class TestFoo(unittest.TestCase):
def test_one(self):
pass
"""
patches
=
{
"TestFoo"
: {
"test_one"
: [
PatchSpec
(
UtMethod
.
ExpectedFailure
,
None
,
""
)]}
}
result
=
apply_patches
(
code
,
patches
)
self
.
assertIn
(
"@unittest.expectedFailure"
,
result
)
self
.
assertIn
(
COMMENT
,
result
)
def
test_apply_skip_with_reason
(
self
):
"""Test applying @unittest.skip with reason."""
code
=
"""import unittest
class TestFoo(unittest.TestCase):
def test_one(self):
pass
"""
patches
=
{
"TestFoo"
: {
"test_one"
: [
PatchSpec
(
UtMethod
.
Skip
,
None
,
"not ready"
)]}
}
result
=
apply_patches
(
code
,
patches
)
self
.
assertIn
(
"@unittest.skip"
,
result
)
self
.
assertIn
(
"not ready"
,
result
)
def
test_apply_skip_if
(
self
):
"""Test applying @unittest.skipIf."""
code
=
"""import unittest
class TestFoo(unittest.TestCase):
def test_one(self):
pass
"""
patches
=
{
"TestFoo"
: {
"test_one"
: [
PatchSpec
(
UtMethod
.
SkipIf
,
"sys.platform == 'win32'"
,
"windows"
)
]
}
}
result
=
apply_patches
(
code
,
patches
)
self
.
assertIn
(
"@unittest.skipIf"
,
result
)
self
.
assertIn
(
'sys.platform == "win32"'
,
result
)
def
test_apply_preserves_existing_decorators
(
self
):
"""Test that existing decorators are preserved."""
code
=
"""import unittest
class TestFoo(unittest.TestCase):
@some_decorator
def test_one(self):
pass
"""
patches
=
{
"TestFoo"
: {
"test_one"
: [
PatchSpec
(
UtMethod
.
ExpectedFailure
,
None
,
""
)]}
}
result
=
apply_patches
(
code
,
patches
)
self
.
assertIn
(
"@some_decorator"
,
result
)
self
.
assertIn
(
"@unittest.expectedFailure"
,
result
)
def
test_apply_inherited_method
(
self
):
"""Test applying patch to inherited method (creates override)."""
code
=
"""import unittest
class TestFoo(unittest.TestCase):
pass
"""
patches
=
{
"TestFoo"
: {
"test_inherited"
: [
PatchSpec
(
UtMethod
.
ExpectedFailure
,
None
,
""
)]
}
}
result
=
apply_patches
(
code
,
patches
)
self
.
assertIn
(
"def test_inherited(self):"
,
result
)
self
.
assertIn
(
"return super().test_inherited()"
,
result
)
def
test_apply_adds_unittest_import
(
self
):
"""Test that unittest import is added if missing."""
code
=
"""import sys
class TestFoo:
def test_one(self):
pass
"""
patches
=
{
"TestFoo"
: {
"test_one"
: [
PatchSpec
(
UtMethod
.
ExpectedFailure
,
None
,
""
)]}
}
result
=
apply_patches
(
code
,
patches
)
# Should add unittest import after existing imports
self
.
assertIn
(
"import unittest"
,
result
)
def
test_apply_no_duplicate_import
(
self
):
"""Test that unittest import is not duplicated."""
code
=
"""import unittest
class TestFoo(unittest.TestCase):
def test_one(self):
pass
"""
patches
=
{
"TestFoo"
: {
"test_one"
: [
PatchSpec
(
UtMethod
.
ExpectedFailure
,
None
,
""
)]}
}
result
=
apply_patches
(
code
,
patches
)
# Count occurrences of 'import unittest'
count
=
result
.
count
(
"import unittest"
)
self
.
assertEqual
(
count
,
1
)
class
TestPatchSpec
(
unittest
.
TestCase
):
"""Tests for PatchSpec class."""
def
test_as_decorator_expected_failure
(
self
):
"""Test generating expectedFailure decorator string."""
spec
=
PatchSpec
(
UtMethod
.
ExpectedFailure
,
None
,
"reason"
)
decorator
=
spec
.
as_decorator
()
self
.
assertIn
(
"@unittest.expectedFailure"
,
decorator
)
self
.
assertIn
(
COMMENT
,
decorator
)
self
.
assertIn
(
"reason"
,
decorator
)
def
test_as_decorator_skip
(
self
):
"""Test generating skip decorator string."""
spec
=
PatchSpec
(
UtMethod
.
Skip
,
None
,
"not ready"
)
decorator
=
spec
.
as_decorator
()
self
.
assertIn
(
"@unittest.skip"
,
decorator
)
self
.
assertIn
(
"not ready"
,
decorator
)
def
test_as_decorator_skip_if
(
self
):
"""Test generating skipIf decorator string."""
spec
=
PatchSpec
(
UtMethod
.
SkipIf
,
"condition"
,
"reason"
)
decorator
=
spec
.
as_decorator
()
self
.
assertIn
(
"@unittest.skipIf"
,
decorator
)
self
.
assertIn
(
"condition"
,
decorator
)
class
TestRoundTrip
(
unittest
.
TestCase
):
"""Tests for extract -> apply round trip."""
def
test_round_trip_expected_failure
(
self
):
"""Test that extracted patches can be re-applied."""
original
=
f"""import unittest
class TestFoo(unittest.TestCase):
#
{
COMMENT
}
@unittest.expectedFailure
def test_one(self):
pass
"""
# Extract patches
patches
=
extract_patches
(
original
)
# Apply to clean code
clean
=
"""import unittest
class TestFoo(unittest.TestCase):
def test_one(self):
pass
"""
result
=
apply_patches
(
clean
,
patches
)
# Should have the decorator
self
.
assertIn
(
"@unittest.expectedFailure"
,
result
)
self
.
assertIn
(
COMMENT
,
result
)
def
test_round_trip_with_patches_on_class
(
self
):
"""Test that extracted patches can be re-applied."""
original
=
f"""import unittest
@unittest.skipIf(a == b, "
{
COMMENT
}
")
@unittest.expectedFailure #
{
COMMENT
}
class TestFoo(unittest.TestCase):
...
"""
# Extract patches
patches
=
extract_patches
(
original
)
# Apply to clean code
clean
=
"""import unittest
class TestFoo(unittest.TestCase):
def test_one(self):
pass
"""
result
=
apply_patches
(
clean
,
patches
)
# Should have the decorator
self
.
assertIn
(
"@unittest.expectedFailure"
,
result
)
self
.
assertIn
(
"@unittest.skipIf"
,
result
)
self
.
assertIn
(
COMMENT
,
result
)
class
TestFindImportInsertLine
(
unittest
.
TestCase
):
"""Tests for _find_import_insert_line function."""
def
test_with_imports
(
self
):
"""Test finding line after imports."""
code
=
"""import os
import sys
class Foo:
pass
"""
tree
=
ast
.
parse
(
code
)
line
=
_find_import_insert_line
(
tree
)
self
.
assertEqual
(
line
,
2
)
def
test_no_imports_with_docstring
(
self
):
"""Test fallback to after docstring when no imports."""
code
=
'''"""Module docstring."""
class Foo:
pass
'''
tree
=
ast
.
parse
(
code
)
line
=
_find_import_insert_line
(
tree
)
self
.
assertEqual
(
line
,
1
)
def
test_no_imports_no_docstring
(
self
):
"""Test fallback to line 0 when no imports and no docstring."""
code
=
"""class Foo:
pass
"""
tree
=
ast
.
parse
(
code
)
line
=
_find_import_insert_line
(
tree
)
self
.
assertEqual
(
line
,
0
)
if
__name__
==
"__main__"
:
unittest
.
main
()
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