ci: ダウンロードされるONNX Runtimeをキャッシュする

.github/actions/cache-onnxruntime/action.yml

@@ -0,0 +1,27 @@
+name: Cache ONNX Runtime
+description: voicevox-ortクレートがダウンロードするONNX Runtimeをキャッシュする。voicevox-ortがシンボリックリンクを利用するmacOSとLinuxだけ対象で、Windowsは対象外。
+
+inputs:
+  key:
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - id: cache-dir-location
+      shell: bash
+      run: |
+        case "$RUNNER_OS" in
+          macOS) cache_dir=/Users/runner/Library/Caches ;;
+          Linux) cache_dir=/home/runner/.cache ;;
+          *)
+            echo 'OS must be macOS or Linux' >&2
+            exit 1
+        esac
+
+        echo cache-dir=$cache_dir >> "$GITHUB_OUTPUT"
+
+    - uses: actions/cache@v4
+      with:
+        key: ${{ inputs.key }}
+        path: ${{ steps.cache-dir-location.outputs.cache-dir }}/voicevox_ort/dfbin

.github/workflows/test.yml

@@ -166,6 +166,11 @@ jobs:
           python-version: "3.10"
       - name: Set up Rust
         uses: ./.github/actions/rust-toolchain-from-file
+      - name: Cache ONNX Runtime
+        if: runner.os == 'macOS' || runner.os == 'Linux'
+        uses: ./.github/actions/cache-onnxruntime
+        with:
+          key: cargo-integration-test-ort-${{ matrix.os }}-${{ hashFiles('Cargo.lock') }}
       - uses: Swatinem/rust-cache@v2
         with:
           key: "cargo-integration-test-cache-${{ matrix.os }}"