make chained call completion work with names like Assert or Arrays

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

@@ -18,11 +18,9 @@ package com.intellij.codeInsight.completion;
 import com.intellij.codeInsight.completion.impl.CamelHumpMatcher;
 import com.intellij.codeInsight.lookup.AutoCompletionPolicy;
 import com.intellij.codeInsight.lookup.LookupElement;
-import com.intellij.psi.PsiElement;
-import com.intellij.psi.PsiJavaCodeReferenceElement;
-import com.intellij.psi.PsiReferenceExpression;
-import com.intellij.psi.PsiType;
+import com.intellij.psi.*;
 import com.intellij.psi.filters.ElementFilter;
+import com.intellij.psi.search.PsiShortNamesCache;
 import com.intellij.util.CollectConsumer;
 import com.intellij.util.Consumer;
 
@@ -92,6 +90,11 @@ public class JavaNoVariantsDelegator extends NoVariantsDelegator {
     PrefixMatcher qMatcher = new CamelHumpMatcher(referenceName);
     Set<LookupElement> plainVariants =
       JavaSmartCompletionContributor.completeReference(qualifier, qualifier, filter, true, true, parameters, qMatcher);
+
+    for (PsiClass aClass : PsiShortNamesCache.getInstance(qualifier.getProject()).getClassesByName(referenceName, qualifier.getResolveScope())) {
+      plainVariants.add(JavaClassNameCompletionContributor.createClassLookupItem(aClass, true));
+    }
+
     if (!plainVariants.isEmpty()) {
       return plainVariants;
     }

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

@@ -0,0 +1,5 @@
+class Foo {
+  {
+    Assert.<caret>
+  }
+}

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

@@ -989,7 +989,7 @@ class Foo {
     myFixture.configureByText "a.java", "class Foo {{ <caret> }}"
     type 'Arrays.'
     myFixture.checkResult "class Foo {{ Arrays.<caret> }}"
-    assert !lookup
+    assert 'Arrays.asList' in myFixture.lookupElementStrings
   }
 
 

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

@@ -1290,4 +1290,11 @@ public class ListUtils {
     checkResult()
   }
 
+  public void testAllAssertClassesMethods() {
+    myFixture.addClass 'package foo; public class Assert { public static void foo() {} }'
+    myFixture.addClass 'package bar; public class Assert { public static void bar() {} }'
+    configure()
+    assert myFixture.lookupElementStrings == ['Assert.bar', 'Assert.foo']
+  }
+
 }

plugins/groovy/src/org/jetbrains/plugins/groovy/lang/completion/GroovyNoVariantsDelegator.java

@@ -23,6 +23,7 @@ import com.intellij.psi.PsiClass;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
 import com.intellij.psi.PsiType;
+import com.intellij.psi.search.PsiShortNamesCache;
 import com.intellij.util.Consumer;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.plugins.groovy.lang.psi.GrReferenceElement;
@@ -135,6 +136,11 @@ public class GroovyNoVariantsDelegator extends NoVariantsDelegator {
       }
     }
 
+    for (PsiClass aClass : PsiShortNamesCache.getInstance(qualifier.getProject()).getClassesByName(referenceName, qualifier.getResolveScope())) {
+      variants.add(GroovyCompletionUtil.createClassLookupItem(aClass));
+    }
+
+
     if (variants.isEmpty()) {
       GroovyCompletionContributor.addAllClasses(parameters, new Consumer<LookupElement>() {
         @Override