avoid repetiton in ci script

.gitlab-ci.yml

@@ -29,16 +29,27 @@ stages:          # List of stages for jobs, and their order of execution
 #    - cmake ..
 #    - make
 
-build:
-  stage: build
+.fedora-wayland:
   image: ${CI_DEPENDENCY_PROXY_GROUP_IMAGE_PREFIX}/fedora:34
   before_script:
     - dnf install -y cmake wayland-devel libxkbcommon-devel wayland-protocols-devel extra-cmake-modules glew-devel glm-devel
+
+build:fedora-wayland:
+  extends: .fedora-wayland
+  stage: build
   script:
     - mkdir build && cd build
     - cmake ..
     - make
 
+test:fedora-wayland:
+  extends: .fedora-wayland
+  stage: test
+  script:
+    - mkdir build && cd build
+    - cmake .. && make
+    - ./tests/testfggl/fggl_test
+
 #unit-test-job:   # This job runs in the test stage.
 #  stage: test    # It only starts when the job in the build stage completes successfully.
 #  before_script: