Upload files to ".gitea/workflows"

.gitea/workflows/expression.yml

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+name: Expression Tests
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Compile Java
+        run: |
+          mkdir -p out
+          javac -d out $(find java -name "*.java")
+
+      - name: Run Expression tests
+        run: |
+          java -ea -cp out expression.ExpressionTest hard Base