add a test

Author: aignas

tests/pypi/extension/extension_tests.bzl

@@ -22,7 +22,7 @@ _tests = []
 
 def _mock_mctx(*modules, environ = {}, read = None, os_name = "unittest", os_arch = "exotic"):
     return struct(
-        os = os or struct(
+        os = struct(
             environ = environ,
             name = os_name,
             arch = os_arch,
@@ -183,8 +183,17 @@ def _test_simple_with_whl_mods(env):
     pypi.is_reproducible().equals(True)
     pypi.exposed_packages().contains_exactly({"pypi": []})
     pypi.hub_group_map().contains_exactly({"pypi": {}})
-    pypi.hub_whl_map().contains_exactly({"pypi": {}})
-    pypi.whl_libraries().contains_exactly({})
+    pypi.hub_whl_map().contains_exactly({"pypi": {
+        "simple": [struct(config_setting = "//_config:is_python_3.15", filename = None, repo = "pypi_315_simple", target_platforms = None, version = "3.15")],
+    }})
+    pypi.whl_libraries().contains_exactly({
+        "pypi_315_simple": {
+            "dep_template": "@pypi//{name}:{target}",
+            "python_interpreter_target": "unit_test_interpreter_target",
+            "repo": "pypi_315",
+            "requirement": "simple==0.0.1 --hash=sha256:deadbeef",
+        },
+    })
     pypi.whl_mods().contains_exactly({})
 
 _tests.append(_test_simple_with_whl_mods)