Some more tests.

compiler/testData/ir/irText/classes/objectWithInitializers.txt

@@ -0,0 +1,19 @@
+FILE /objectWithInitializers.kt
+  CLASS CLASS Base
+    CONSTRUCTOR public constructor Base()
+      BLOCK_BODY
+        INSTANCE_INITIALIZER_CALL classDescriptor=Base
+  CLASS OBJECT Test
+    CONSTRUCTOR private constructor Test()
+      BLOCK_BODY
+        CALL .<init> type=Base operator=SUPER_CONSTRUCTOR_CALL
+        INSTANCE_INITIALIZER_CALL classDescriptor=Test
+    PROPERTY public final val x: kotlin.Int = 1
+      EXPRESSION_BODY
+        CONST Int type=kotlin.Int value='1'
+    PROPERTY public final val y: kotlin.Int
+    ANONYMOUS_INITIALIZER Test
+      BLOCK_BODY
+        SET_BACKING_FIELD y type=kotlin.Unit operator=null
+          CALL .<get-x> type=kotlin.Int operator=GET_PROPERTY
+            $this: THIS public object Test : Base type=Test