Fixed compile errors

tests/build.gradle

@@ -1,4 +1,3 @@
 apply plugin: "java"
 
 sourceCompatibility = 1.8
-sourceSets.main.java.srcDirs = [ "src/" ]

tests/src/test/java/Tests.java

@@ -1,9 +1,9 @@
-import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.BeforeEach;
 
 public class Tests{
 
-    @Test
-    void testThings(){
+    @BeforeEach
+    void launchApplication(){
 
     }
 }