Fix broken golden file test under bazel

test/cpp/codegen/BUILD

@@ -61,7 +61,6 @@ grpc_cc_binary(
     srcs = ["golden_file_test.cc"],
     deps = [
         "//:grpc++",
-        "//src/proto/grpc/testing:compiler_test_proto",
         "//test/core/util:gpr_test_util",
     ],
     external_deps = [
@@ -70,6 +69,20 @@ grpc_cc_binary(
     ],
 )
 
+genrule(
+    name = "copy_compiler_test_grpc_pb_h",
+    srcs = ["//src/proto/grpc/testing:_compiler_test_proto_grpc_codegen"],
+    cmd = "cat $(GENDIR)/src/proto/grpc/testing/compiler_test.grpc.pb.h > $@",
+    outs = ["compiler_test.grpc.pb.h"],
+)
+
+genrule(
+    name = "copy_compiler_test_mock_grpc_pb_h",
+    srcs = ["//src/proto/grpc/testing:_compiler_test_proto_grpc_codegen"],
+    cmd = "cat $(GENDIR)/src/proto/grpc/testing/compiler_test_mock.grpc.pb.h > $@",
+    outs = ["compiler_test_mock.grpc.pb.h"],
+)
+
 grpc_sh_test(
     name = "run_golden_file_test",
     srcs = ["run_golden_file_test.sh"],
@@ -77,6 +90,7 @@ grpc_sh_test(
         ":golden_file_test",
         ":compiler_test_golden",
         ":compiler_test_mock_golden",
-        "//src/proto/grpc/testing:_compiler_test_proto_grpc_codegen",
+        ":compiler_test.grpc.pb.h",
+        ":compiler_test_mock.grpc.pb.h",
     ],
 )

test/cpp/codegen/run_golden_file_test.sh

@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-set -ex
+set -eux
 
-GENERATED_FILES_PATH="$TEST_SRCDIR/../../../../../genfiles/src/proto/grpc/testing/"
+GENERATED_PB_H_DIR="${TEST_SRCDIR}/com_github_grpc_grpc/test/cpp/codegen/"
-test/cpp/codegen/golden_file_test --generated_file_path="$GENERATED_FILES_PATH"
+test/cpp/codegen/golden_file_test --generated_file_path="$GENERATED_PB_H_DIR"