IDEA-64612 Autocasting from completion is not inserted after "assert X instanceof T" (and before another assignment)

java/java-impl/src/com/intellij/codeInsight/completion/JavaCompletionUtil.java

@@ -680,8 +680,8 @@ public class JavaCompletionUtil {
         final Document document = context.getEditor().getDocument();
         PsiDocumentManager.getInstance(project).commitDocument(document);
         final PsiFile file = context.getFile();
-        final PsiReferenceExpression ref =
-          PsiTreeUtil.findElementOfClassAtOffset(file, context.getStartOffset(), PsiReferenceExpression.class, false);
+        final PsiJavaCodeReferenceElement ref =
+          PsiTreeUtil.findElementOfClassAtOffset(file, context.getStartOffset(), PsiJavaCodeReferenceElement.class, false);
         if (ref != null) {
           final PsiElement qualifier = ref.getQualifier();
           if (qualifier != null) {

java/java-tests/testData/codeInsight/completion/normal/QualifierCastingWithUnknownAssignments.java

@@ -0,0 +1,24 @@
+import javax.swing.*;
+import java.awt.*;
+
+public class Bar {
+
+    static class CellWrapper {
+        public boolean isSeparator() {
+            return true;
+        }
+    }
+
+    static class MyRenderer extends DefaultListCellRenderer {
+        public Component getListCellRendererComponent(JList list, Object value, int index, boolean s, boolean focus) {
+            assert value instanceof CellWrapper;
+
+            value.is<caret>
+
+            mySelected = isSelected;
+
+        }
+    }
+
+}
+

java/java-tests/testData/codeInsight/completion/normal/QualifierCastingWithUnknownAssignments_after.java

@@ -0,0 +1,24 @@
+import javax.swing.*;
+import java.awt.*;
+
+public class Bar {
+
+    static class CellWrapper {
+        public boolean isSeparator() {
+            return true;
+        }
+    }
+
+    static class MyRenderer extends DefaultListCellRenderer {
+        public Component getListCellRendererComponent(JList list, Object value, int index, boolean s, boolean focus) {
+            assert value instanceof CellWrapper;
+
+            ((CellWrapper) value).isSeparator()<caret>
+
+            mySelected = isSelected;
+
+        }
+    }
+
+}
+

java/java-tests/testSrc/com/intellij/codeInsight/completion/NormalCompletionTest.groovy

@@ -787,6 +787,7 @@ public class NormalCompletionTest extends LightFixtureCompletionTestCase {
 
   public void testCastTooComplexInstanceofedQualifier() throws Throwable { doAntiTest(); }
   public void testDontCastInstanceofedQualifier() throws Throwable { doTest(); }
+  public void testQualifierCastingWithUnknownAssignments() throws Throwable { doTest(); }
 
   public void testWildcardsInLookup() throws Exception {
     configure()