ci: Add simple CI test

with relaxed criteria on the lingering test, as the fix is not added yet

.github/workflows/ci-linux.yml

@@ -1,32 +1,31 @@
 name: CI
 
-on:
-  push:
-    branches: [master]
+on: [push, pull_request]
 
 jobs:
-  build:
+  build-and-test:
     strategy:
       matrix:
         compiler: [gcc, clang]
     env:
       CC: ${{ matrix.compiler }}
       LSAN_OPTIONS: verbosity=1:log_threads=1
+      WGET_CHECK2JUNIT_PY: https://raw.githubusercontent.com/gsauthof/utility/42792030/check2junit.py
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v2
     - name: Install deps
-      run: sudo apt-get install check ninja-build doxygen
+      run: |
+        sudo apt-get install check ninja-build doxygen
+        python -m pip install lxml junit-xml
+        wget --no-verbose ${WGET_CHECK2JUNIT_PY}
+
+    - name: Build and Run unit tests with make and cmake
+      run: ./test/ci/unit_tests.sh
 
     - name: Copy lwipcfg.h for example app
       run: cp contrib/examples/example_app/lwipcfg.h.ci contrib/examples/example_app/lwipcfg.h
-
-    - name: Build unit tests with make
-      run: make -C contrib/ports/unix/check
-    - name: Run unit tests
-      run: make -C contrib/ports/unix/check check
-
     - name: Run cmake
       run: mkdir build && cd build && cmake .. -G Ninja
     - name: Build with cmake
@@ -35,9 +34,32 @@ jobs:
       run: cd build && cmake --build . --target lwipdocs
 
     - name: Validate combinations of options
-      run: cd contrib/ports/unix/example_app && ./iteropts.sh
+      run: ./test/ci/validate_opts.sh
 
-    - name: Build the default example app
-      run: |
-        cp contrib/examples/example_app/lwipcfg.h.example contrib/examples/example_app/lwipcfg.h
-        make -C contrib/ports/unix/example_app TESTFLAGS="-Wno-documentation" -j 4
+    - name: Build and run test apps
+      run: ./test/ci/test_apps.sh
+
+    - name: Upload Test Results
+      if: always()
+      uses: actions/upload-artifact@v2
+      with:
+        name: Test Results ${{ matrix.compiler }}
+        path: "*.xml"
+
+  publish-test-results:
+    name: "Publish Tests Results"
+    needs: build-and-test
+    runs-on: ubuntu-latest
+    permissions:
+      checks: write
+    if: always()
+    steps:
+      - name: Download Artifacts
+        uses: actions/download-artifact@v2
+        with:
+          path: artifacts
+
+      - name: Publish Test Results
+        uses: EnricoMi/publish-unit-test-result-action@v2
+        with:
+          junit_files: "artifacts/**/*.xml"