fix(obf): Fix test suite and added test for bug report in #47

Author: terminalsin

dev.skidfuscator.obfuscator/src/test/java/dev/skidfuscator/core/TestSkidfuscator.java

@@ -8,6 +8,7 @@
 import dev.skidfuscator.obfuscator.phantom.jphantom.PhantomResolvingJarDumper;
 import dev.skidfuscator.obfuscator.predicate.renderer.IntegerBlockPredicateRenderer;
 import dev.skidfuscator.obfuscator.skidasm.SkidClassNode;
+import dev.skidfuscator.obfuscator.transform.Transformer;
 import dev.skidfuscator.obfuscator.util.MiscUtil;
 import dev.skidfuscator.obfuscator.verifier.Verifier;
 import dev.skidfuscator.testclasses.TestRun;
@@ -135,11 +136,11 @@ protected void _importClasspath() {
     }
 
     @Override
-    protected void _loadTransformer() {
+    protected List<Transformer> _loadTransformer() {
         if (SKIP)
-            return;
+            return new ArrayList<>();
 
-        super._loadTransformer();
+        return  super._loadTransformer();
     }
 
     @Override

dev.skidfuscator.obfuscator/src/test/java/dev/skidfuscator/test/opaque/OpaqueListTest.java

@@ -0,0 +1,20 @@
+package dev.skidfuscator.test.opaque;
+
+import dev.skidfuscator.core.SkidTest;
+import dev.skidfuscator.testclasses.TestRun;
+import dev.skidfuscator.testclasses.opaque.OpaqueListClazz;
+
+public class OpaqueListTest extends SkidTest {
+
+    @Override
+    public Class<? extends TestRun> getMainClass() {
+        return OpaqueListClazz.class;
+    }
+
+    @Override
+    public Class<?>[] getClasses() {
+        return new Class[]{
+                OpaqueListClazz.class,
+        };
+    }
+}

dev.skidfuscator.obfuscator/src/test/java/dev/skidfuscator/testclasses/opaque/OpaqueListClazz.java

@@ -0,0 +1,24 @@
+package dev.skidfuscator.testclasses.opaque;
+
+import dev.skidfuscator.testclasses.TestRun;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class OpaqueListClazz implements TestRun {
+    private static final List<Integer> list = Arrays.asList(1, 2, 3);
+
+    @Override
+    public void run() {
+        Integer i = null;
+        for (Integer j : list) {
+            if (j == 0) {
+                i = j;
+                break;
+            }
+        }
+
+        System.out.println(i);
+        assert i == null : "i is not null???";
+    }
+}