test: add caching to xwin installation

.github/workflows/ci.yml

@@ -31,10 +31,18 @@ jobs:
           tags: ${{ github.repository }}:test
           cache-from: type=gha
           cache-to: type=gha,mode=max
+      - uses: actions/cache/restore@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3.3.2
+        with:
+          path: test/.xwin-cache
+          key: xwin-cache
       - name: Run Tests
         run: |
           set -Eeuo pipefail
           docker run --rm --mount type=bind,src="$(pwd)/test",dst=/ws -w /ws ${{ github.repository }}:test bats --formatter junit testsuite.bats | tee test-report.xml
+      - uses: actions/cache/save@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3.3.2
+        with:
+          path: test/.xwin-cache
+          key: xwin-cache
       - uses: EnricoMi/publish-unit-test-result-action@ca89ad036b5fcd524c1017287fb01b5139908408 # v2.11.0
         if: always()
         with:

.gitignore

@@ -1,3 +1,4 @@
 .xwin-cache/
+.xwin-hash/
 build/
 megalinter-reports/

test/CMakePresets.json

@@ -23,6 +23,10 @@
       "name": "clang-cl",
       "inherits": "defaults",
       "toolchainFile": "${sourceDir}/clang-cl/toolchain.cmake",
+      "environment": {
+        "CCACHE_DEPEND": "true",
+        "CCACHE_COMPILERTYPE": "clang-cl"
+      },
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Release"
       }

test/testsuite.bats

@@ -1,12 +1,35 @@
 #!/usr/bin/env bats
 
+setup_file() {
+  # Installing the Windows SDK/CRT takes a long time.
+  # When still valid, use the installation from cache.
+
+  xwin --accept-license --cache-dir .xwin-hash list
+  HASH_LIST_MANIFEST=$(sha256sum .xwin-hash/dl/manifest*.json | awk '{ print $1 }')
+  HASH_CACHED_MANIFEST=
+
+  if [[ -d .xwin-cache/dl ]]; then
+    HASH_CACHED_MANIFEST=$(sha256sum .xwin-cache/dl/manifest*.json | awk '{ print $1 }')
+  fi
+
+  if [[ $HASH_LIST_MANIFEST != $HASH_CACHED_MANIFEST ]]; then
+    xwin --accept-license splat --preserve-ms-arch-notation
+  fi
+
+  cp -r .xwin-cache/splat/ /winsdk
+}
+
+teardown_file() {
+  rm -rf .xwin-hash/ /winsdk
+}
+
 setup() {
   load '/usr/local/bats-support/load'
   load '/usr/local/bats-assert/load'
 }
 
 teardown() {
-  rm -rf build crash-* .xwin-cache
+  rm -rf build crash-*
 }
 
 # bats test_tags=tc:1
@@ -35,6 +58,15 @@ teardown() {
   assert_output --partial "Machine:                           ARM"
 }
 
+# bats test_tags=tc:3
+@test "valid code input should result in working Windows executable using clang-cl compiler" {
+  run cmake --preset clang-cl
+  assert_success
+
+  run cmake --build --preset clang-cl
+  assert_success
+}
+
 # bats test_tags=tc:4
 @test "invalid code input should result in failing build" {
   run cmake --preset gcc
@@ -45,7 +77,7 @@ teardown() {
 }
 
 # bats test_tags=tc:5
-@test "using ccache as a compiler launcher should result in cached build" {
+@test "using ccache as a compiler launcher should result in cached build using gcc compiler" {
   run ccache --clear --zero-stats
 
   run cmake --preset gcc -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
@@ -72,6 +104,34 @@ teardown() {
   assert_output --partial "Misses:             0"
 }
 
+# bats test_tags=tc:17
+@test "using ccache as a compiler launcher should result in cached build using clang-cl compiler" {
+  run ccache --clear --zero-stats
+
+  run cmake --preset clang-cl -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
+  assert_success
+
+  run cmake --build --preset clang-cl
+  assert_success
+
+  run ccache -s
+  assert_output --partial "Hits:               0"
+  assert_output --partial "Misses:             1"
+
+  run rm -rf build
+  run ccache --zero-stats
+
+  run cmake --preset clang-cl -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
+  assert_success
+
+  run cmake --build --preset clang-cl
+  assert_success
+
+  run ccache -s
+  assert_output --partial "Hits:               1"
+  assert_output --partial "Misses:             0"
+}
+
 # bats test_tags=tc:6
 @test "running clang-tidy as part of the build should result in warning diagnostics" {
   run cmake --preset clang
@@ -175,15 +235,3 @@ teardown() {
   assert_success
   assert_output "Hello World!"
 }
-
-# bats test_tags=tc:16
-@test "using xwin to install Windows SDK/CRT should result in working environment" {
-  run xwin --accept-license splat --preserve-ms-arch-notation && mv .xwin-cache/splat/ /winsdk
-  assert_success
-
-  run cmake --preset clang-cl
-  assert_success
-
-  run cmake --build --preset clang-cl
-  assert_success
-}