IDEA-54459 Smart type completion for anonymous class after 'new' inserts '{}' inside '()' if the class has two generic parameters

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

@@ -18,6 +18,7 @@ import com.intellij.openapi.editor.ScrollType;
 import com.intellij.openapi.project.Project;
 import com.intellij.psi.*;
 import com.intellij.psi.codeStyle.CodeStyleManager;
+import com.intellij.psi.impl.source.PostprocessReformattingAspect;
 import com.intellij.psi.infos.CandidateInfo;
 import com.intellij.psi.util.PsiTreeUtil;
 import com.intellij.psi.util.PsiUtil;
@@ -53,6 +54,8 @@ class ConstructorInsertHandler implements InsertHandler<LookupElementDecorator<L
         if (psiClass.hasModifierProperty(PsiModifier.ABSTRACT) || psiClass.isInterface()) {
           FeatureUsageTracker.getInstance().triggerFeatureUsed("editing.completion.smarttype.anonymous");
 
+          PostprocessReformattingAspect.getInstance(context.getProject()).doPostponedFormatting(context.getFile().getViewProvider());
+
           final Editor editor = context.getEditor();
           final int offset = context.getTailOffset();
           editor.getDocument().insertString(offset, " {}");

java/java-tests/testData/codeInsight/completion/smartType/NewAnonymousFunction-out.java

@@ -0,0 +1,5 @@
+interface Function<X, Y> { }
+class A {
+  private static final Function<String, String> a = new Function<String, String>() {
+  <caret>};
+}

java/java-tests/testData/codeInsight/completion/smartType/NewAnonymousFunction.java

@@ -0,0 +1,4 @@
+interface Function<X, Y> { }
+class A {
+  private static final Function<String, String> a = new <caret>
+}

java/java-tests/testSrc/com/intellij/codeInsight/completion/SmartTypeCompletionTest.java

@@ -633,6 +633,8 @@ public class SmartTypeCompletionTest extends LightCompletionTestCase {
 
   public void testDefaultAnnoMethodValue() throws Throwable { doTest(); }
 
+  public void testNewAnonymousFunction() throws Throwable { doTest(); }
+
   public void testUseIntConstantsFromTargetClass() throws Throwable { doTest(); }
   public void testUseIntConstantsFromTargetClassReturnValue() throws Throwable { doTest(); }
   public void testUseIntConstantsFromConstructedClass() throws Throwable { doTest(); }