Add testpep561 test

Author: nipunn1313

mypy/test/testpep561.py

@@ -79,9 +79,9 @@ def install_package(pkg: str,
 
 def test_pep561(testcase: DataDrivenTestCase) -> None:
     """Test running mypy on files that depend on PEP 561 packages."""
-    if (sys.platform == 'darwin' and hasattr(sys, 'base_prefix') and
-       sys.base_prefix != sys.prefix):
-        pytest.skip()
+    #if (sys.platform == 'darwin' and hasattr(sys, 'base_prefix') and
+    #   sys.base_prefix != sys.prefix):
+    #    pytest.skip()
     assert testcase.old_cwd is not None, "test was not properly set up"
     if 'python2' in testcase.name.lower():
         python = try_find_python2_interpreter()
@@ -141,6 +141,8 @@ def test_pep561(testcase: DataDrivenTestCase) -> None:
             iter_count = '' if i == 0 else ' on iteration {}'.format(i + 1)
             expected = testcase.output if i == 0 else testcase.output2.get(i + 1, [])
 
+            print(venv)
+            # import pdb ; pdb.set_trace()
             assert_string_arrays_equal(expected, output,
                                'Invalid output ({}, line {}){}'.format(
                                    testcase.file, testcase.line, iter_count))

test-data/packages/typedpkg_ns/setup.py test-data/packages/typedpkg_ns_a/setup.pytest-data/packages/typedpkg_ns/setup.py renamed to test-data/packages/typedpkg_ns_a/setup.py

@@ -1,10 +1,10 @@
-from setuptools import setup, find_packages
+from setuptools import setup
 
 setup(
     name='typedpkg_namespace.alpha',
     version='1.0.0',
-    packages=find_packages(),
     namespace_packages=['typedpkg_ns'],
     zip_safe=False,
-    package_data={'typedpkg_ns.ns': ['py.typed']}
+    package_data={'typedpkg_ns.a': ['py.typed']},
+    packages=['typedpkg_ns.a'],
 )

…ages/typedpkg_ns/typedpkg_ns/__init__.py …es/typedpkg_ns_a/typedpkg_ns/__init__.pytest-data/packages/typedpkg_ns/typedpkg_ns/__init__.py renamed to test-data/packages/typedpkg_ns_a/typedpkg_ns/__init__.py test-data/packages/typedpkg_ns/typedpkg_ns/__init__.py renamed to test-data/packages/typedpkg_ns_a/typedpkg_ns/__init__.py

@@ -0,0 +1,14 @@
+"""
+This setup file installs packages to test mypy's PEP 561 implementation
+"""
+
+from distutils.core import setup
+
+setup(
+    name='typedpkg_ns_b-stubs',
+    author="The mypy team",
+    version='0.1',
+    namespace_packages=['typedpkg_ns-stubs'],
+    package_data={'typedpkg_ns-stubs.b': ['__init__.pyi', 'bbb.pyi']},
+    packages=['typedpkg_ns-stubs.b'],
+)

…s/typedpkg_ns/typedpkg_ns/ns/__init__.py …/typedpkg_ns_a/typedpkg_ns/a/__init__.pytest-data/packages/typedpkg_ns/typedpkg_ns/ns/__init__.py renamed to test-data/packages/typedpkg_ns_a/typedpkg_ns/a/__init__.py test-data/packages/typedpkg_ns/typedpkg_ns/ns/__init__.py renamed to test-data/packages/typedpkg_ns_a/typedpkg_ns/a/__init__.py

@@ -0,0 +1 @@
+def bf(a: bool) -> bool: ...

…ckages/typedpkg_ns/typedpkg_ns/ns/bbb.py …kages/typedpkg_ns_a/typedpkg_ns/a/bbb.pytest-data/packages/typedpkg_ns/typedpkg_ns/ns/bbb.py renamed to test-data/packages/typedpkg_ns_a/typedpkg_ns/a/bbb.py test-data/packages/typedpkg_ns/typedpkg_ns/ns/bbb.py renamed to test-data/packages/typedpkg_ns_a/typedpkg_ns/a/bbb.py

@@ -0,0 +1,10 @@
+from setuptools import setup
+
+setup(
+    name='typedpkg_namespace.beta',
+    version='1.0.0',
+    namespace_packages=['typedpkg_ns'],
+    zip_safe=False,
+    package_data={'typedpkg_ns.b': []},
+    packages=['typedpkg_ns.b'],
+)