diff --git a/src/test/java/TestMock.java b/src/test/java/TestMock.java
new file mode 100644
index 0000000..39a467f
--- /dev/null
+++ b/src/test/java/TestMock.java
@@ -0,0 +1,17 @@
+import pl.put.poznan.sortingmadness.logic.BogoSort;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.Mockito.*;
+import java.util.ArrayList;
+import java.util.Collections;
+
+
+public class TestMock {
+    @Test
+    void bogo_test() {
+        BogoSort mockObject = mock(BogoSort.class);
+        when(mockObject.sortSimple(new ArrayList<>(), -1)).thenReturn(new ArrayList<>());
+        assertEquals(Collections.emptyList(), mockObject.sortSimple(new ArrayList<>(), -1));
+    }
+}
\ No newline at end of file