diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 798707d..34035c5 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -12,3 +12,12 @@ jobs:
     - name: build
       working-directory: ${{github.workspace}}
       run: clang -Weverything -O3 gif-h-demo.cpp -o gif -Wno-old-style-cast -Wno-missing-prototypes
+    - name: test
+      working-directory: ${{github.workspace}}
+      run: ./gif
+    - name: Upload test
+      uses: actions/upload-artifact@v4
+      working-directory: ${{github.workspace}}
+      with:
+        name: test-gif
+        path: ./MyGif.gif