Run tests before build & exit the workflow

.github/workflows/build_spacewarp.yml

@@ -19,12 +19,18 @@ jobs:
         run: |
           sudo curl -o /usr/local/bin/nuget.exe https://dist.nuget.org/win-x86-commandline/latest/nuget.exe
 
+      - name: Running automated tests
+        run: |
+            dotnet test "SpaceWarp.sln"
+            test_exit_code=$?
+            if [ $test_exit_code -ne 0 ]; then
+              echo "Tests failed. Cancelling the build."
+              exit $test_exit_code
+            fi
+        
       - name: Build the solution
         run: dotnet build "SpaceWarp.sln" -c Release
 
-      - name: Run automated tests
-        run: dotnet test "SpaceWarp.sln"
-
       - name: Find zip
         id: find-zip
         run: |