Merge pull request #8889 from redsun82/swift-codegen-unit-tests

Swift: add unit tests to code generation

.github/workflows/swift-codegen.yml

@@ -15,13 +15,18 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v3
         with:
-          python-version: '~3.7'
+          python-version: '~3.8'
           cache: 'pip'
       - uses: ./.github/actions/fetch-codeql
       - uses: bazelbuild/setup-bazelisk@v2
-      - name: Check code generation
+      - name: Install dependencies
         run: |
           pip install -r swift/codegen/requirements.txt
+      - name: Run unit tests
+        run: |
+          bazel test //swift/codegen:tests --test_output=errors
+      - name: Check that code was generated
+        run: |
           bazel run //swift/codegen
           git add swift
           git diff --exit-code --stat HEAD