CI: Run unit tests with minimal NS0

tools/travis/travis_linux_script.sh

@@ -462,11 +462,35 @@ if [ "$CC" != "tcc" ]; then
         -DUA_ENABLE_PUBSUB=ON \
         -DUA_ENABLE_PUBSUB_DELTAFRAMES=ON \
         -DUA_ENABLE_PUBSUB_INFORMATIONMODEL=ON \
-        -DUA_ENABLE_UNIT_TESTS_MEMCHECK=ON ..
+        -DUA_ENABLE_UNIT_TESTS_MEMCHECK=ON \
+        -DUA_NAMESPACE_ZERO=MINIMAL ..
     make -j && make test ARGS="-V"
     if [ $? -ne 0 ] ; then exit 1 ; fi
+    cd .. && rm build -rf
     echo -en 'travis_fold:end:script.build.unit_test_ns0_minimal\\r'
 
+    echo -e "\r\n== Unit tests (reduced NS0) ==" && echo -en 'travis_fold:start:script.build.unit_test_ns0_reduced\\r'
+    mkdir -p build && cd build
+    cmake \
+        -DCMAKE_BUILD_TYPE=Debug \
+        -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/$PYTHON \
+        -DUA_BUILD_EXAMPLES=ON \
+        -DUA_BUILD_UNIT_TESTS=ON \
+        -DUA_ENABLE_COVERAGE=ON \
+        -DUA_ENABLE_DA=ON \
+        -DUA_ENABLE_DISCOVERY=ON \
+        -DUA_ENABLE_DISCOVERY_MULTICAST=ON \
+        -DUA_ENABLE_ENCRYPTION=ON \
+        -DUA_ENABLE_JSON_ENCODING=ON \
+        -DUA_ENABLE_PUBSUB=ON \
+        -DUA_ENABLE_PUBSUB_DELTAFRAMES=ON \
+        -DUA_ENABLE_PUBSUB_INFORMATIONMODEL=ON \
+        -DUA_ENABLE_UNIT_TESTS_MEMCHECK=ON \
+        -DUA_NAMESPACE_ZERO=REDUCED ..
+    make -j && make test ARGS="-V"
+    if [ $? -ne 0 ] ; then exit 1 ; fi
+    echo -en 'travis_fold:end:script.build.unit_test_ns0_reduced\\r'
+
     # only run coveralls on main repo and when MINGW=true
     # We only want to build coveralls once, so we just take the travis run where MINGW=true which is only enabled once
     echo -e "\r\n== -> Current repo: ${TRAVIS_REPO_SLUG} =="