Remove unused name_from_req() (#1334)

piptools/utils.py

@@ -218,16 +218,6 @@ def dedup(iterable: Iterable[_T]) -> Iterable[_T]:
     return iter(collections.OrderedDict.fromkeys(iterable))
 
 
-def name_from_req(req):
-    """Get the name of the requirement"""
-    if hasattr(req, "project_name"):
-        # from pkg_resources, such as installed dists for pip-sync
-        return req.project_name
-    else:
-        # from packaging, such as install requirements from requirements.txt
-        return req.name
-
-
 def get_hashes_from_ireq(ireq: InstallRequirement) -> Set[str]:
     """
     Given an InstallRequirement, return a set of string hashes in the format

tests/test_minimal_upgrade.py

@@ -1,7 +1,7 @@
 import pytest
 
 from piptools.repositories import LocalRequirementsRepository
-from piptools.utils import name_from_req
+from piptools.utils import key_from_ireq
 
 
 @pytest.mark.parametrize(
@@ -37,7 +37,7 @@ def test_no_upgrades(base_resolver, repository, from_line, input, pins, expected
     existing_pins = dict()
     for line in pins:
         ireq = from_line(line)
-        existing_pins[name_from_req(ireq.req)] = ireq
+        existing_pins[key_from_ireq(ireq)] = ireq
     local_repository = LocalRequirementsRepository(existing_pins, repository)
     output = base_resolver(
         input, prereleases=False, repository=local_repository

tests/test_repository_local.py

@@ -3,7 +3,7 @@
 import pytest
 
 from piptools.repositories.local import LocalRequirementsRepository
-from piptools.utils import name_from_req
+from piptools.utils import key_from_ireq
 from tests.conftest import FakeRepository
 
 EXPECTED = {"sha256:5e6071ee6e4c59e0d0408d366fe9b66781d2cf01be9a6e19a2433bb3c5336330"}
@@ -29,7 +29,7 @@ def test_get_hashes_local_repository_cache_hit(from_line, repository):
     # Create an install requirement with the hashes included in its options
     options = {"hashes": {"sha256": [entry.split(":")[1] for entry in EXPECTED]}}
     req = from_line("small-fake-a==0.1", options=options)
-    existing_pins = {name_from_req(req): req}
+    existing_pins = {key_from_ireq(req): req}
 
     # Use fake repository so that we know the hashes are coming from cache
     local_repository = LocalRequirementsRepository(existing_pins, repository)
@@ -50,7 +50,7 @@ def test_toggle_reuse_hashes_local_repository(
     # Create an install requirement with the hashes included in its options
     options = {"hashes": {"sha256": [entry.split(":")[1] for entry in NONSENSE]}}
     req = from_line("small-fake-a==0.1", options=options)
-    existing_pins = {name_from_req(req): req}
+    existing_pins = {key_from_ireq(req): req}
 
     local_repository = LocalRequirementsRepository(
         existing_pins, pypi_repository, reuse_hashes=reuse_hashes

tests/test_utils.py

@@ -17,7 +17,6 @@
     is_pinned_requirement,
     is_url_requirement,
     lookup_table,
-    name_from_req,
 )
 
 
@@ -198,17 +197,6 @@ def test_is_url_requirement_filename(caplog, from_line, line):
     assert is_url_requirement(ireq) is True
 
 
-def test_name_from_req(from_line):
-    ireq = from_line("django==1.8")
-    assert name_from_req(ireq.req) == "django"
-
-
-def test_name_from_req_with_project_name(from_line):
-    ireq = from_line("foo==1.8")
-    ireq.req.project_name = "bar"
-    assert name_from_req(ireq.req) == "bar"
-
-
 @pytest.mark.parametrize(
     ("cli_args", "expected_command"),
     (