Renamed *.jet to *.kt in test data of JetPsiCheckerTest.

idea/testData/checker/Objects.kt

@@ -0,0 +1,28 @@
+package toplevelObjectDeclarations
+  open class Foo(y : Int) {
+    open fun foo() : Int = 1
+  }
+
+  class T : <error>Foo</error> {}
+
+  object A : <error>Foo</error> {
+    val x : Int = 2
+
+    fun test() : Int {
+      return x + foo()
+    }
+  }
+
+  object B : <error>A</error> {}
+
+  val x = A.foo()
+
+  val y = object : Foo(x) {
+    {
+      x + 12
+    }
+
+    override fun foo() : Int = 1
+  }
+
+  val z = y.foo()