Class/package name clashes highlighting

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting/packageClassClash/java/lang.java

@@ -0,0 +1,3 @@
+package java;
+
+<error descr="Class 'java.lang' clashes with package of same name">class lang</error> { }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting/packageClassClash/pkg/sub.java

@@ -0,0 +1,3 @@
+package pkg;
+
+<error descr="Class 'pkg.sub' clashes with package of same name">public class sub</error> { }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting/packageClassClash/pkg/sub/Test.java

@@ -0,0 +1,3 @@
+package <error descr="Package 'pkg.sub' clashes with class of same name">pkg.sub</error>;
+
+public class Test { }