Test the Ruby gem on all supported platforms

Now Ruby 3.4 builds on Windows should be fixed (see
oxidize-rb/actions#50), try installing and
testing the Ruby gem on Ubuntu, macOS, and Windows.

.github/workflows/tests.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.4'
+          ruby-version: "3.4"
           bundler-cache: true
       - uses: actions-rust-lang/setup-rust-toolchain@v1
       - run: bundle exec rake build
@@ -33,23 +33,24 @@ jobs:
   test-ruby-gem:
     needs: ruby-gem
     runs-on: ubuntu-latest
-    name: Ruby ${{ matrix.ruby }}
+    name: Test Ruby gem - ${{ matrix.os }} - Ruby ${{ matrix.ruby }}
     strategy:
       matrix:
+        os: ["ubuntu-latest", "macos-latest", "windows-latest"]
         ruby:
-          - '3.4'
-          - '3.3'
-          - '3.2'
-          - '3.1'
-          - '3.0'
-          - '2.7'
+          - "3.4"
+          - "3.3"
+          - "3.2"
+          - "3.1"
+          - "3.0"
+          - "2.7"
     steps:
       - uses: actions/checkout@v4
-      - uses: ruby/setup-ruby@v1
+      - uses: oxidize-rb/actions/setup-ruby-and-rust@v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
+          cargo-cache: true
       - uses: actions/download-artifact@v4
         with:
           name: ruby-gem
@@ -76,20 +77,21 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.4'
+          ruby-version: "3.4"
           bundler-cache: true
       - uses: oxidize-rb/actions/cross-gem@v1
         id: cross-gem
         with:
           platform: ${{ matrix.platform }}
-          ruby-versions: '2.7,3.0,3.1,3.2,3.3,3.4'
+          ruby-versions: "2.7,3.0,3.1,3.2,3.3,3.4"
       - uses: actions/upload-artifact@v4
         with:
           name: cross-gem-${{ matrix.platform }}
           path: ${{ steps.cross-gem.outputs.gem-path }}
 
   test-precompiled-arm-linux:
     needs: "cross-gem"
+    name: Test precompiled gem - arm-linux - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -118,6 +120,7 @@ jobs:
 
   test-precompiled-aarch64-linux:
     needs: "cross-gem"
+    name: Test precompiled gem - aarch64-linux - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -146,6 +149,7 @@ jobs:
 
   test-precompiled-aarch64-linux-musl:
     needs: "cross-gem"
+    name: Test precompiled gem - aarch64-linux-musl - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -174,6 +178,7 @@ jobs:
 
   test-precompiled-arm64-darwin:
     needs: "cross-gem"
+    name: Test precompiled gem - arm64-darwin - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -201,6 +206,7 @@ jobs:
 
   test-precompiled-x64-mingw-ucrt:
     needs: "cross-gem"
+    name: Test precompiled gem - x64-mingw-ucrt - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -221,6 +227,7 @@ jobs:
 
   test-precompiled-x64-mingw32:
     needs: "cross-gem"
+    name: Test precompiled gem - x64-mingw32 - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -245,6 +252,7 @@ jobs:
 
   test-precompiled-x86_64-darwin:
     needs: "cross-gem"
+    name: Test precompiled gem - x86_64-darwin - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -272,6 +280,7 @@ jobs:
 
   test-precompiled-x86_64-linux:
     needs: "cross-gem"
+    name: Test precompiled gem - x86_64-linux - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
@@ -299,6 +308,7 @@ jobs:
 
   test-precompiled-x86_64-linux-musl:
     needs: "cross-gem"
+    name: Test precompiled gem - x86_64-linux-musl - Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix: