test trailing-newline uninstall behavior

tests/functional/test_uninstall.py

@@ -100,6 +100,39 @@ def test_uninstall_easy_install_after_import(script):
     )
 
 
+@pytest.mark.network
+def test_uninstall_trailing_newline(script):
+    """
+    Uninstall behaves appropriately if easy-install.pth
+    lacks a trailing newline
+
+    """
+    script.run('easy_install', 'INITools==0.2', expect_stderr=True)
+    script.run('easy_install', 'PyLogo', expect_stderr=True)
+    easy_install_pth = script.site_packages_path / 'easy-install.pth'
+
+    # trim trailing newline from easy-install.pth
+    with open(easy_install_pth) as f:
+        pth_before = f.read()
+
+    with open(easy_install_pth, 'w') as f:
+        f.write(pth_before.rstrip())
+
+    # uninstall initools
+    script.pip('uninstall', 'INITools', '-y')
+    with open(easy_install_pth) as f:
+        pth_after = f.read()
+
+    # verify that only initools is removed
+    before_without_initools = [
+        line for line in pth_before.splitlines()
+        if 'initools' not in line.lower()
+    ]
+    lines_after = pth_after.splitlines()
+
+    assert lines_after == before_without_initools
+
+
 @pytest.mark.network
 def test_uninstall_namespace_package(script):
     """