Only run unit tests for crates that are changed

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

.github/workflows/ci.yml

@@ -70,6 +70,7 @@ jobs:
           echo "has_detect_target_changed=$has_detect_target_changed" | tee -a "$GITHUB_OUTPUT"
 
   test:
+    needs: changed-files
     strategy:
       fail-fast: false
       matrix:
@@ -95,6 +96,16 @@ jobs:
         with:
           tools: cargo-nextest
 
+      - name: Decide crates to test
+        env:
+          CRATES_CHANGED: ${{ needs.changed-files.outputs.crates_changed }}
+        run: |
+          ARGS=""
+          for crate in $CRATES_CHANGED; do
+              ARGS="$ARGS -p $crate"
+          done
+          echo "$ARGS" | tee -a "$GITHUB_ENV"
+
       - run: just test
         env:
           GITHUB_TOKEN: ${{ secrets.CI_TEST_GITHUB_TOKEN }}