Update run-tests.yml

- Removed MacOS tests.
- Improved Linux tests execution configuration.

.github/workflows/run-tests.yml

@@ -18,12 +18,14 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up CMake
-        uses: cmake/setup-cmake@v1
+        run: sudo apt-get install -y cmake
 
       - name: Build and test
         run: |
-          cmake .
-          cmake --build .
+          mkdir build
+          cd build
+          cmake ..
+          cmake --build . --target tests
           ctest --output-on-failure
 
   test-windows:
@@ -41,21 +43,4 @@ jobs:
         run: |
           cmake .
           cmake --build . --config Release
-          ctest --output-on-failure
-
-  test-macos:
-    name: Test on macOS
-    runs-on: macos-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v2
-
-      - name: Set up CMake
-        uses: cmake/setup-cmake@v1
-
-      - name: Build and test
-        run: |
-          cmake .
-          cmake --build .
           ctest --output-on-failure