moving tests to CE

java/java-tests/testData/inspection/dataFlow/Nullable/expected.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+  <problem>
+    <file>Npe.java</file>
+    <line>14</line>
+    <description>Argument 'nullable()' might be null</description>
+  </problem>
+</problems>

java/java-tests/testData/inspection/dataFlow/Nullable/src/Npe.java

@@ -0,0 +1,16 @@
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public class Npe {
+   Object foo(@NotNull Object o) {
+     return o;
+   }
+
+   @Nullable Object nullable() {
+     return null;
+   }
+
+   void bar() {
+     Object o = foo(nullable()); // null should not be passed here.
+   }
+}