fix tests — use assertTreeEqual

platform/platform-tests/testSrc/com/intellij/ide/util/treeView/BaseTreeTestCase.java

@@ -1,18 +1,4 @@
-/*
- * Copyright 2000-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.ide.util.treeView;
 
 import com.intellij.openapi.util.Condition;
@@ -350,7 +336,7 @@ abstract class BaseTreeTestCase<StructureElement> extends FlyIdeaTestCase {
   }
 
   void assertTreeNow(String expected) {
-    Assert.assertEquals(expected, PlatformTestUtil.print(myTree, true));
+    PlatformTestUtil.assertTreeEqual(myTree, expected, true);
   }
 
   void doAndWaitForBuilder(final Runnable runnable) throws Exception {