add tests for hw4

.gitea/workflows/word-stat.yml

@@ -0,0 +1,22 @@
+name: Word Stat 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 Word Stat tests
+        run: |
+          java -ea -cp out wordStat.WordStatTest Base