Fix runfiles in cc_shared_library

bazelbuild@5ad403b fixed a key part which was to actually add the precompiled libraries to the
runfiles provider. There was a test but this used a cc_binary which gave the
false sense of things working correctly since the cc_binary is able to get the
runfiles from the CcInfo and add it itself. Changed test to use a py_test
instead.

RELNOTES:none
PiperOrigin-RevId: 433179855

src/main/starlark/builtins_bzl/common/cc/experimental_cc_shared_library.bzl

@@ -505,6 +505,8 @@ def _cc_shared_library_impl(ctx):
         if precompiled_dynamic_library.resolved_symlink_dynamic_library != None:
             precompiled_only_dynamic_libraries_runfiles.append(precompiled_dynamic_library.resolved_symlink_dynamic_library)
 
+    runfiles = runfiles.merge(ctx.runfiles(files = precompiled_only_dynamic_libraries_runfiles))
+
     for export in ctx.attr.roots:
         exports[str(export.label)] = True
 

src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/BUILD.builtin_test

@@ -8,6 +8,12 @@ package(
     default_visibility = ["//src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library:__subpackages__"],
 )
 
+py_test(
+    name = "python_test",
+    srcs = ["python_test.py"],
+    data = ["foo_so"],
+)
+
 cc_test(
     name = "cc_test",
     srcs = ["main.cc"],
@@ -371,7 +377,7 @@ debug_files_test(
 
 runfiles_test(
     name = "runfiles_test",
-    target_under_test = ":binary",
+    target_under_test = ":python_test",
     is_linux = select({
         "//src/conditions:linux": True,
         "//conditions:default": False}),

src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/python_test.py

@@ -0,0 +1,13 @@
+# Copyright 2022 The Bazel Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.

src/main/starlark/tests/builtins_bzl/cc/cc_shared_library/test_cc_shared_library/starlark_tests.bzl

@@ -157,8 +157,8 @@ def _runfiles_test_impl(ctx):
     for runfile in target_under_test[DefaultInfo].default_runfiles.files.to_list():
         actual_files.append(runfile.basename)
     expected = [
-        "libfoo_so.so",
-        "libbar_so.so",
+        "renamed_so_file_copy.so",
+        "libdirect_so_file.so",
     ]
     for expected_file in expected:
         asserts.true(env, expected_file in actual_files, expected_file + " not found in actual files:\n" + "\n".join(actual_files))