Add unit tests for pip commands not using cwd

tests/functional/test_check.py

@@ -239,3 +239,56 @@ def test_basic_check_broken_metadata(script):
 
     assert 'Error parsing requirements' in result.stderr
     assert result.returncode == 1
+
+
+def test_check_skip_work_dir_pkg(script):
+    """
+    Test that check should not include package
+    present in working directory
+    """
+
+    # Create a test package with dependency missing
+    # and create .egg-info dir
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0',
+        install_requires=['missing==0.1'])
+
+    script.run('python', 'setup.py', 'egg_info',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Check should not complain about broken requirements
+    # when run from package directory
+    result = script.pip('check')
+    expected_lines = (
+        "No broken requirements found.",
+    )
+    assert matches_expected_lines(result.stdout, expected_lines)
+    assert result.returncode == 0
+
+
+def test_check_include_work_dir_pkg(script):
+    """
+    Test that check should include package in working directory
+    if working directory is added in PYTHONPATH
+    """
+
+    # Create a test package with dependency missing
+    # and create .egg-info dir
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0',
+        install_requires=['missing==0.1'])
+
+    script.run('python', 'setup.py', 'egg_info',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Add PYTHONPATH env variable
+    script.environ.update({'PYTHONPATH': pkg_path})
+
+    # Check should mention about missing requirement simple
+    # when run from package directory
+    result = script.pip('check', expect_error=True)
+    expected_lines = (
+        "simple 1.0 requires missing, which is not installed.",
+    )
+    assert matches_expected_lines(result.stdout, expected_lines)
+    assert result.returncode == 1

tests/functional/test_freeze.py

@@ -11,6 +11,7 @@ from tests.lib import (
     _create_test_package_with_srcdir,
     _git_commit,
     _vcs_add,
+    create_test_package_with_setup,
     need_bzr,
     need_mercurial,
     need_svn,
@@ -818,9 +819,41 @@ def test_freeze_path_multiple(tmpdir, script, data):
     _check_output(result.stdout, expected)
 
 
-def test_freeze_direct_url_archive(script, shared_data, with_wheel):
-    req = "simple @ " + path_to_url(shared_data.packages / "simple-2.0.tar.gz")
-    assert req.startswith("simple @ file://")
-    script.pip("install", req)
-    result = script.pip("freeze")
-    assert req in result.stdout
+def test_freeze_skip_work_dir_pkg(script):
+    """
+    Test that freeze should not include package
+    present in working directory
+    """
+
+    # Create a test package and create .egg-info dir
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
+    script.run('python', 'setup.py', 'egg_info',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Freeze should not include package simple when run from package directory
+    result = script.pip('freeze', 'simple', cwd=pkg_path)
+    _check_output(result.stdout, '')
+
+
+def test_freeze_include_work_dir_pkg(script):
+    """
+    Test that freeze should include package in working directory
+    if working directory is added in PYTHONPATH
+    """
+
+    # Create a test package and create .egg-info dir
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
+    script.run('python', 'setup.py', 'egg_info',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Add PYTHONPATH env variable
+    script.environ.update({'PYTHONPATH': pkg_path})
+
+    # Freeze should include package simple when run from package directory
+    result = script.pip('freeze', 'simple', cwd=pkg_path)
+    expected = textwrap.dedent("""\
+            simple==1.0
+            <BLANKLINE>""")
+    _check_output(result.stdout, expected)

tests/functional/test_install.py

@@ -1821,3 +1821,51 @@ def test_install_sends_client_cert(install_args, script, cert_factory, data):
         environ, _ = call_args.args
         assert "SSL_CLIENT_CERT" in environ
         assert environ["SSL_CLIENT_CERT"]
+
+
+def test_install_skip_work_dir_pkg(script, data):
+    """
+    Test that install of a package in working directory
+    should pass on the second attempt after an install
+    and an uninstall
+    """
+
+    # Create a test package and install it
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
+    script.pip('install', '-e', '.',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Uninstalling the package and installing it again will succeed
+    script.pip('uninstall', 'simple', '-y')
+
+    result = script.pip('install', '--find-links',
+                        data.find_links, 'simple',
+                        expect_stderr=True, cwd=pkg_path)
+    assert 'Successfully installed simple' in result.stdout
+
+
+def test_install_include_work_dir_pkg(script, data):
+    """
+    Test that install of a package in working directory
+    should fail on the second attempt after an install
+    if working directory is added in PYTHONPATH
+    """
+
+    # Create a test package and install it
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
+    script.pip('install', '-e', '.',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Uninstall will fail with given warning
+    script.pip('uninstall', 'simple', '-y')
+
+    # Add PYTHONPATH env variable
+    script.environ.update({'PYTHONPATH': pkg_path})
+
+    # Uninstalling the package and installing it again will fail
+    result = script.pip('install', '--find-links',
+                        data.find_links, 'simple',
+                        expect_stderr=True, cwd=pkg_path)
+    assert 'Requirement already satisfied: simple' in result.stdout

tests/functional/test_list.py

@@ -552,9 +552,8 @@ def test_list_skip_work_dir_pkg(script):
     """
 
     # Create a test package and create .egg-info dir
-    pkg_path = create_test_package_with_setup(script,
-                                              name='simple',
-                                              version='1.0')
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
     script.run('python', 'setup.py', 'egg_info',
                expect_stderr=True, cwd=pkg_path)
 
@@ -567,14 +566,12 @@ def test_list_skip_work_dir_pkg(script):
 def test_list_include_work_dir_pkg(script):
     """
     Test that list should include package in working directory
-    if working directory is added in sys.path
+    if working directory is added in PYTHONPATH
     """
 
     # Create a test package and create .egg-info dir
-    pkg_path = create_test_package_with_setup(script,
-                                              name='simple',
-                                              version='1.0')
-
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
     script.run('python', 'setup.py', 'egg_info',
                expect_stderr=True, cwd=pkg_path)
 

tests/functional/test_show.py

@@ -5,6 +5,7 @@ import pytest
 
 from pip import __version__
 from pip._internal.commands.show import search_packages_info
+from tests.lib import create_test_package_with_setup
 
 
 def test_basic_show(script):
@@ -259,3 +260,41 @@ def test_show_required_by_packages_requiring_capitalized(script, data):
 
     assert 'Name: Requires-Capitalized' in lines
     assert 'Required-by: requires-requires-capitalized' in lines
+
+
+def test_show_skip_work_dir_pkg(script):
+    """
+    Test that show should not include package
+    present in working directory
+    """
+
+    # Create a test package and create .egg-info dir
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
+    script.run('python', 'setup.py', 'egg_info',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Show should not include package simple when run from package directory
+    result = script.pip('show', 'simple', cwd=pkg_path)
+    assert 'WARNING: Package(s) not found: simple' in result.stderr
+
+
+def test_show_include_work_dir_pkg(script):
+    """
+    Test that show should include package in working directory
+    if working directory is added in PYTHONPATH
+    """
+
+    # Create a test package and create .egg-info dir
+    pkg_path = create_test_package_with_setup(
+        script, name='simple', version='1.0')
+    script.run('python', 'setup.py', 'egg_info',
+               expect_stderr=True, cwd=pkg_path)
+
+    # Add PYTHONPATH env variable
+    script.environ.update({'PYTHONPATH': pkg_path})
+
+    # Show should include package simple when run from package directory
+    result = script.pip('show', 'simple', cwd=pkg_path)
+    lines = result.stdout.splitlines()
+    assert 'Name: simple' in lines