Check if yaml placeholders work

.github/workflows/cargo.yml

@@ -27,8 +27,51 @@ jobs:
       - name: Run cargo fmt
         run: cargo fmt --all -- --check
 
+  test_crate: &test_crate
+    name: Test ({{crate}})
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: 14
+
+      - name: Checkout submodules
+        shell: bash
+        run: |
+          auth_header="$(git config --local --get http.https://github.com/.extraheader)"
+          git submodule sync --recursive
+          git -c "http.extraheader=$auth_header" -c protocol.version=2 submodule update --init --force --recursive --depth=1
+
+      - name: Install node dependencies
+        run: |
+          npm config set prefix ~/npm
+          npm i browserslist regenerator-runtime sourcemap-validator progress
+          npm i -g jest
+
+      - name: Cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cargo/
+            **/target/
+          key: ${{ runner.os }}-cargo-test
+
+      # Ensure that all components all compilable.
+      - name: Run cargo check for all targets
+        run: cargo check --color always --all --all-targets
+
+      - name: Run cargo test
+        run: |
+          export PATH="$PATH:$HOME/npm/bin"
+          cargo test --color always --package {{crate}}
+
+  test_swc:
+    <<: *test_crate
+    crate: swc
+
   test:
-    name: test
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2