gui: add internal tests

jadx-gui/src/test/java/jadx/api/Factory.java

@@ -0,0 +1,16 @@
+package jadx.api;
+
+import jadx.core.dex.nodes.ClassNode;
+
+import java.util.List;
+
+public class Factory {
+
+	public static JavaPackage newPackage(String name, List<JavaClass> classes) {
+		return new JavaPackage(name, classes);
+	}
+
+	public static JavaClass newClass(Decompiler decompiler, ClassNode classNode) {
+		return new JavaClass(decompiler, classNode);
+	}
+}

jadx-gui/src/test/java/jadx/gui/treemodel/JRootTest.java

@@ -0,0 +1,43 @@
+package jadx.gui.treemodel;
+
+import jadx.api.Decompiler;
+import jadx.api.Factory;
+import jadx.api.IJadxArgs;
+import jadx.api.JavaClass;
+import jadx.api.JavaPackage;
+import jadx.core.dex.nodes.ClassNode;
+import jadx.gui.JadxWrapper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Test;
+
+import static junit.framework.Assert.assertEquals;
+import static org.mockito.Mockito.mock;
+
+public class JRootTest {
+
+	@Test
+	public void testHierarchyPackages() {
+		String pkgName = "a.b.c.d.e";
+
+		JadxWrapper wrapper = mock(JadxWrapper.class);
+		JRoot root = new JRoot(wrapper);
+
+		JavaClass cls = Factory.newClass(new Decompiler(mock(IJadxArgs.class)), mock(ClassNode.class));
+		JavaPackage pkg = Factory.newPackage(pkgName, Arrays.asList(cls));
+
+		List<JavaPackage> packages = new ArrayList<JavaPackage>();
+		packages.add(pkg);
+
+		List<JPackage> out = root.getHierarchyPackages(packages);
+
+		assertEquals(out.size(), 1);
+		JPackage jpkg = out.get(0);
+		assertEquals(jpkg.getName(), pkgName);
+		assertEquals(jpkg.getClasses().size(), 1);
+	}
+
+}