EA-52671 - assert: AbstractMappingStrategy.processFoldRegion

java/java-tests/testData/codeInsight/folding/FoldingExceptionTest.java

@@ -0,0 +1,9 @@
+class Test {
+  int b;
+  java.util.List<String> values = new java.util.ArrayList<String>();
+
+  int getB() {
+<caret>    java.util.List<String> values = new java.util.ArrayList<String>();
+    return b;
+  }
+}

java/java-tests/testSrc/com/intellij/openapi/editor/impl/FoldingExceptionTest.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2000-2014 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.
+ */
+package com.intellij.openapi.editor.impl;
+
+import com.intellij.codeHighlighting.TextEditorHighlightingPass;
+import com.intellij.codeInsight.daemon.impl.CodeFoldingPassFactory;
+import com.intellij.mock.MockProgressIndicator;
+import com.intellij.psi.PsiDocumentManager;
+import com.intellij.psi.PsiFile;
+import com.intellij.testFramework.EditorTestUtil;
+import com.intellij.testFramework.LightCodeInsightTestCase;
+
+public class FoldingExceptionTest extends LightCodeInsightTestCase {
+
+  public void test() {
+    configureByFile("/codeInsight/folding/FoldingExceptionTest.java");
+    EditorTestUtil.configureSoftWraps(myEditor, 120);
+    runFoldingPass();
+    deleteLine();
+    runFoldingPass();
+    // we just verify here that the operation completes normally - it was known to fail previously
+  }
+
+  private static void runFoldingPass() {
+    PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(getProject());
+    psiDocumentManager.commitAllDocuments();
+    PsiFile psiFile = psiDocumentManager.getPsiFile(myEditor.getDocument());
+    assertNotNull(psiFile);
+
+    CodeFoldingPassFactory factory = getProject().getComponent(CodeFoldingPassFactory.class);
+    TextEditorHighlightingPass highlightingPass = factory.createHighlightingPass(psiFile, myEditor);
+    highlightingPass.collectInformation(new MockProgressIndicator());
+    highlightingPass.doApplyInformationToEditor();
+  }
+}