Add header warning test

3 files changed, 109 insertions, 0 deletions

diff --git a/test/headers/.clang-tidy b/test/headers/.clang-tidy
new file mode 100644
index 0000000..374dbd7
--- /dev/null
+++ b/test/headers/.clang-tidy
@@ -0,0 +1,33 @@
+Checks: >
+  *,
+  -*-avoid-c-arrays,
+  -*-magic-numbers,
+  -*-no-malloc,
+  -abseil-string-find-str-contains,
+  -altera-*,
+  -android-cloexec-accept,
+  -bugprone-easily-swappable-parameters,
+  -cppcoreguidelines-owning-memory,
+  -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+  -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+  -cppcoreguidelines-pro-type-const-cast,
+  -cppcoreguidelines-pro-type-reinterpret-cast,
+  -fuchsia-default-arguments*,
+  -fuchsia-overloaded-operator,
+  -google-runtime-int,
+  -hicpp-no-array-decay,
+  -llvmlibc-*,
+  -modernize-return-braced-init-list,
+  -modernize-use-nodiscard,
+  -modernize-use-trailing-return-type,
+  -readability-identifier-length,
+  -readability-implicit-bool-conversion,
+CheckOptions:
+  - key:   modernize-use-override.AllowOverrideAndFinal
+    value: 'true'
+CheckOptions:
+  - key:   cppcoreguidelines-explicit-virtual-functions.AllowOverrideAndFinal
+    value: 'true'
+WarningsAsErrors: '*'
+HeaderFilterRegex: '.*'
+FormatStyle: file
diff --git a/test/headers/test_headers.cpp b/test/headers/test_headers.cpp
new file mode 100644
index 0000000..6149f43
--- /dev/null
+++ b/test/headers/test_headers.cpp
@@ -0,0 +1,39 @@
+/*
+  Copyright 2022 David Robillard <d@drobilla.net>
+
+  Raul is free software: you can redistribute it and/or modify it under the
+  terms of the GNU General Public License as published by the Free Software
+  Foundation, either version 3 of the License, or any later version.
+
+  Raul is distributed in the hope that it will be useful, but WITHOUT ANY
+  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with Raul.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "raul/Array.hpp"        // IWYU pragma: keep
+#include "raul/Deletable.hpp"    // IWYU pragma: keep
+#include "raul/DoubleBuffer.hpp" // IWYU pragma: keep
+#include "raul/Exception.hpp"    // IWYU pragma: keep
+#include "raul/Maid.hpp"         // IWYU pragma: keep
+#include "raul/Noncopyable.hpp"  // IWYU pragma: keep
+#include "raul/Path.hpp"         // IWYU pragma: keep
+#include "raul/RingBuffer.hpp"   // IWYU pragma: keep
+#include "raul/Semaphore.hpp"    // IWYU pragma: keep
+#include "raul/Symbol.hpp"       // IWYU pragma: keep
+
+#ifndef _WIN32
+#  include "raul/Process.hpp" // IWYU pragma: keep
+#  include "raul/Socket.hpp"  // IWYU pragma: keep
+#endif
+
+#if defined(__GNUC__)
+__attribute__((const))
+#endif
+int
+main()
+{
+  return 0;
+}
diff --git a/test/meson.build b/test/meson.build
index 2321712..8411377 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -13,6 +13,43 @@ if not get_option('tests').disabled() and not meson.is_subproject()
   endif
 endif
 
+###################
+# Header Warnings #
+###################
+
+header_args = []
+if cpp.get_id() == 'clang'
+  header_args += [
+    '-Wno-c++17-extensions',
+    '-Wno-padded',
+    '-Wno-weak-vtables',
+  ]
+elif cpp.get_id() == 'gcc'
+  header_args += [
+    '-Wno-abi-tag',
+    '-Wno-multiple-inheritance',
+    '-Wno-padded',
+    '-Wno-switch-default',
+    '-Wno-useless-cast',
+  ]
+elif cpp.get_id() == 'msvc'
+  header_args += [
+    '/wd4626', # assignment operator implicitly deleted
+    '/wd5027', # move assignment operator implicitly deleted
+  ]
+endif
+
+# Test that headers have (almost) no warnings (ignoring usual suppressions)
+test(
+  'test_headers',
+  executable(
+    'test_headers',
+    files('headers/test_headers.cpp'),
+    cpp_args: header_args,
+    dependencies: raul_dep,
+  ),
+)
+
 ##############
 # Unit Tests #
 ##############