Fix tests

tests/masonry/publishing/test_uploader.py

 import pytest
-import shutil
 
 from poetry.masonry.publishing.uploader import UploadError
 from poetry.masonry.publishing.uploader import Uploader
@@ -12,12 +11,12 @@ fixtures_dir = Path(__file__).parent.parent.parent / "fixtures"
 
 
 def project(name):
-    return Path(__file__).parent / "fixtures" / name
+    return fixtures_dir / name
 
 
 def test_uploader_properly_handles_400_errors(http):
     http.register_uri(http.POST, "https://foo.com", status=400, body="Bad request")
-    uploader = Uploader(Poetry.create(project("simple-project")), NullIO())
+    uploader = Uploader(Poetry.create(project("simple_project")), NullIO())
 
     with pytest.raises(UploadError) as e:
         uploader.upload("https://foo.com")
@@ -27,7 +26,7 @@ def test_uploader_properly_handles_400_errors(http):
 
 def test_uploader_properly_handles_403_errors(http):
     http.register_uri(http.POST, "https://foo.com", status=403, body="Unauthorized")
-    uploader = Uploader(Poetry.create(project("simple-project")), NullIO())
+    uploader = Uploader(Poetry.create(project("simple_project")), NullIO())
 
     with pytest.raises(UploadError) as e:
         uploader.upload("https://foo.com")
@@ -40,7 +39,7 @@ def test_uploader_registers_for_appropriate_400_errors(mocker, http):
     http.register_uri(
         http.POST, "https://foo.com", status=400, body="No package was ever registered"
     )
-    uploader = Uploader(Poetry.create(project("simple-project")), NullIO())
+    uploader = Uploader(Poetry.create(project("simple_project")), NullIO())
 
     with pytest.raises(UploadError):
         uploader.upload("https://foo.com")