fix(cpp): pre-create .amp directory to allow clangd to find it (#1025)

* fix: pre-create .amp directory to allow clangd to find it

* test: add test for clangd compile commands path

* test: update integration-tests.bats

Signed-off-by: Ron <45816308+rjaegers@users.noreply.github.com>

---------

Signed-off-by: Ron <45816308+rjaegers@users.noreply.github.com>

Author: rjaegers

.devcontainer/cpp/Dockerfile

@@ -114,6 +114,7 @@ RUN --mount=type=cache,target=/var/log,sharing=locked \
                         --slave /usr/bin/mull-reporter mull-reporter /usr/bin/mull-reporter-${CLANG_VERSION} \
                         --slave /usr/lib/mull-ir-frontend mull-ir-frontend /usr/lib/mull-ir-frontend-${CLANG_VERSION} \
  && update-alternatives --install /usr/bin/python python /usr/bin/python3 10 \
+ && mkdir /root/.amp \
  && cp /etc/skel/.bashrc /root/.bashrc
 
 # Set up package managers CPM and Conan

test/cpp/integration-tests.bats

@@ -178,6 +178,11 @@ teardown() {
   assert_output --partial "All checks completed, 0 errors"
 }
 
+@test "clangd should start with a specified compile commands path" {
+  run timeout 1s clangd --compile-commands-dir=/root/.amp
+  refute_output --partial "Path specified by --compile-commands-dir does not exist. The argument will be ignored."
+}
+
 @test "using lld as an alternative linker should result in working host executable" {
   cmake --preset gcc
   cmake --build --preset gcc-lld