build: use Ubuntu 22.04 for clang-format

Author: gjasny

.github/workflows/linting.yml

@@ -35,21 +35,16 @@ jobs:
 
   format:
     name: Clang Format
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout source
         uses: actions/checkout@v3
 
       # clang-format comes pre-installed
-      # https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu2004-Readme.md
-      #- name: Install dependencies
-      #  run: |
-      #    sudo apt-get remove -y --purge man-db # avoid time-consuming trigger
-      #    sudo apt-get update
-      #    sudo apt-get install -y clang-format-12
+      # https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md
 
       - name: Run clang-format
-        run: find . -type f \( -name '*.c' -o -name '*.cc' -o -name '*.cpp' -o -name '*.cxx' -o -name '*.o' -o -name '*.h' -o -name '*.hpp' -o -name '*.hxx' \) -exec clang-format-12 -style=file -i {} \;
+        run: find . -type f \( -name '*.c' -o -name '*.cc' -o -name '*.cpp' -o -name '*.cxx' -o -name '*.o' -o -name '*.h' -o -name '*.hpp' -o -name '*.hxx' \) -exec clang-format-15 -style=file -i {} \;
 
       - name: Check for changes
         run: git diff --exit-code

pull/tests/integration/integration_test.cc

@@ -274,7 +274,8 @@ TEST_F(BasicAuthIntegrationTest, shouldRejectWrongAuthorizationMethod) {
 
 TEST_F(BasicAuthIntegrationTest, shouldRejectMalformedBase64) {
   std::unique_ptr<curl_slist, decltype(&curl_slist_free_all)> header(
-      curl_slist_append(nullptr, "Authorization: Basic $"), curl_slist_free_all);
+      curl_slist_append(nullptr, "Authorization: Basic $"),
+      curl_slist_free_all);
 
   fetchPrePerform_ = [&header](CURL* curl) {
     curl_easy_setopt(curl, CURLOPT_HTTPHEADER, header.get());
@@ -286,7 +287,8 @@ TEST_F(BasicAuthIntegrationTest, shouldRejectMalformedBase64) {
 
 TEST_F(BasicAuthIntegrationTest, shouldRejectMalformedBasicAuth) {
   std::unique_ptr<curl_slist, decltype(&curl_slist_free_all)> header(
-      curl_slist_append(nullptr, "Authorization: Basic YWJj"), curl_slist_free_all);
+      curl_slist_append(nullptr, "Authorization: Basic YWJj"),
+      curl_slist_free_all);
 
   fetchPrePerform_ = [&header](CURL* curl) {
     curl_easy_setopt(curl, CURLOPT_HTTPHEADER, header.get());

push/tests/internal/label_encoder_test.cc

@@ -2,8 +2,8 @@
 
 #include <gtest/gtest.h>
 
-#include <string>
 #include <sstream>
+#include <string>
 
 namespace prometheus {
 namespace {