Add a test for includes without paths (#28532)

* Add a test for includes without paths

* fix path

* fix

* Automated change: Fix sanity tests

Co-authored-by: ctiller <ctiller@users.noreply.github.com>

src/core/ext/transport/chttp2/transport/hpack_encoder.cc

@@ -25,8 +25,8 @@
 
 #include <cstdint>
 
-#include "hpack_constants.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_constants.h"
-#include "hpack_encoder_table.h"
+#include "src/core/ext/transport/chttp2/transport/hpack_encoder_table.h"
 
 /* This is here for grpc_is_binary_header
  * TODO(murgatroid99): Remove this

src/core/ext/transport/chttp2/transport/hpack_parser_table.cc

@@ -24,11 +24,11 @@
 #include <string.h>
 
 #include "absl/strings/str_format.h"
-#include "hpack_constants.h"
 
 #include <grpc/support/alloc.h>
 #include <grpc/support/log.h>
 
+#include "src/core/ext/transport/chttp2/transport/hpack_constants.h"
 #include "src/core/lib/debug/trace.h"
 #include "src/core/lib/gpr/murmur_hash.h"
 #include "src/core/lib/slice/slice_internal.h"

test/core/util/fake_udp_and_tcp_server.cc

@@ -16,7 +16,7 @@
 
 #include <grpc/support/port_platform.h>
 
-#include "fake_udp_and_tcp_server.h"
+#include "test/core/util/fake_udp_and_tcp_server.h"
 
 #include "absl/strings/match.h"
 #include "absl/strings/str_cat.h"

test/cpp/qps/qps_server_builder.cc

@@ -16,7 +16,7 @@
  *
  */
 
-#include "qps_server_builder.h"
+#include "test/cpp/qps/qps_server_builder.h"
 
 #include "absl/memory/memory.h"
 

tools/distrib/check_naked_includes.py

@@ -0,0 +1,72 @@
+#!/usr/bin/env python3
+
+# Copyright 2022 gRPC 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.
+
+# Check for includes of the form `#include "bar.h"` - i.e. not including the subdirectory. We require instead `#include "foo/bar.h"`.
+
+import argparse
+import os
+import re
+import sys
+
+# find our home
+ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
+os.chdir(ROOT)
+
+# parse command line
+argp = argparse.ArgumentParser(description='include guard checker')
+argp.add_argument('-f', '--fix', default=False, action='store_true')
+args = argp.parse_args()
+
+# error count
+errors = 0
+
+CHECK_SUBDIRS = [
+    'src/core',
+    'src/cpp',
+    'test/core',
+    'test/cpp',
+]
+
+for subdir in CHECK_SUBDIRS:
+    for root, dirs, files in os.walk(subdir):
+        for f in files:
+            if f.endswith('.h') or f.endswith('.cc'):
+                fpath = os.path.join(root, f)
+                output = open(fpath, 'r').readlines()
+                changed = False
+                for (i, line) in enumerate(output):
+                    m = re.match(r'^#include "([^"]*)"(.*)', line)
+                    if not m:
+                        continue
+                    include = m.group(1)
+                    if '/' in include:
+                        continue
+                    expect_path = os.path.join(root, include)
+                    trailing = m.group(2)
+                    if not os.path.exists(expect_path):
+                        continue
+                    changed = True
+                    errors += 1
+                    output[i] = '#include "{0}"{1}\n'.format(
+                        expect_path, trailing)
+                    print("Found naked include '{0}' in {1}".format(
+                        include, fpath))
+                if changed and args.fix:
+                    open(fpath, 'w').writelines(output)
+
+if errors > 0:
+    print('{} errors found.'.format(errors))
+    sys.exit(1)

tools/distrib/sanitize.sh

@@ -19,6 +19,7 @@ cd $(dirname $0)/../..
 
 tools/buildgen/generate_projects.sh
 tools/distrib/check_include_guards.py --fix
+tools/distrib/check_naked_includes.py --fix || true
 tools/distrib/check_copyright.py --fix
 tools/distrib/add-iwyu.py
 tools/distrib/check_trailing_newlines.sh --fix

tools/run_tests/sanity/sanity_tests.yaml

@@ -23,6 +23,7 @@
   cpu_cost: 3
 - script: tools/distrib/check_copyright.py
 - script: tools/distrib/check_include_guards.py
+- script: tools/distrib/check_naked_includes.py
 - script: tools/distrib/check_trailing_newlines.sh
 - script: tools/distrib/check_upb_output.sh
 - script: tools/distrib/check_pytype.sh