Use canonical name when validating package from directory

poetry/puzzle/provider.py

@@ -403,16 +403,16 @@ def get_package_from_directory(
             finally:
                 os.chdir(current_dir)
 
-            if name and name != package_name:
+            package = Package(package_name, package_version)
+
+            if name and name != package.name:
                 # For now, the dependency's name must match the actual package's name
                 raise RuntimeError(
                     "The dependency name for {} does not match the actual package's name: {}".format(
                         name, package_name
                     )
                 )
 
-            package = Package(package_name, package_version)
-
             package.description = package_summary
 
             for req in reqs:

tests/fixtures/git/github.com/demo/non-canonical-name/demo/__init__.py

@@ -0,0 +1 @@
+__version__ = "1.2.3"

tests/fixtures/git/github.com/demo/non-canonical-name/setup.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from setuptools import setup
+
+
+kwargs = dict(
+    name="Demo",
+    license="MIT",
+    version="0.1.2",
+    description="Demo project.",
+    author="Sébastien Eustace",
+    author_email="sebastien@eustace.io",
+    url="https://github.com/demo/demo",
+    packages=["demo"],
+    install_requires=["pendulum>=1.4.4"],
+    extras_require={"foo": ["cleo"], "bar": ["tomlkit"]},
+)
+
+
+setup(**kwargs)

tests/puzzle/test_provider.py

@@ -126,15 +126,16 @@ def test_search_for_vcs_read_setup_raises_error_if_no_version(provider, mocker):
         provider.search_for_vcs(dependency)
 
 
-def test_search_for_directory_setup_egg_info(provider):
+@pytest.mark.parametrize("directory", ["demo", "non-canonical-name"])
+def test_search_for_directory_setup_egg_info(provider, directory):
     dependency = DirectoryDependency(
         "demo",
         Path(__file__).parent.parent
         / "fixtures"
         / "git"
         / "github.com"
         / "demo"
-        / "demo",
+        / directory,
     )
 
     package = provider.search_for_directory(dependency)[0]