Change some logging for tests

JavaIntegration/src/main/java/org/openzen/zencode/java/logger/ScriptingEngineStreamLogger.java

     
     @Override
     public void logCompileException(CompileException exception) {
-        throw new UnsupportedOperationException();
+        throwingErr("Compile Exception:", exception);
     }
     
     @Override

ScriptingExample/src/test/java/org/openzen/zenscript/scriptingexample/tests/helpers/ZenCodeTestLogger.java

     
     private static final boolean logDebug = false;
     private final List<String> printlnOutputs = new ArrayList<>();
+    private final List<String> errors = new ArrayList<>();
     private boolean isEngineComplete = false;
     
     @Override
         this.printlnOutputs.addAll(Arrays.asList(line.split(System.lineSeparator())));
     }
     
+    @Override
+    public void error(String message) {
+        errors.add(message);
+        super.error(message);
+    }
+    
+    @Override
+    public void throwingErr(String message, Throwable throwable) {
+        errors.add(message);
+        super.throwingErr(message, throwable);
+    }
+    
     void setEngineComplete() {
         isEngineComplete = true;
     }
         }
         Assertions.assertEquals(size, printlnOutputs.size());
     }
+    
+    public void assertNoErrors() {
+        Assertions.assertEquals(0, errors.size());
+    }
 }