Add tests for companion objects and various kinds of classes

(no representation for enum entries yet).

compiler/testData/ir/irText/classes/classes.kt

@@ -0,0 +1,9 @@
+class TestClass
+
+interface TestInterface
+
+object TestObject
+
+annotation class TestAnnotationClass
+
+enum class TestEnumClass

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

@@ -0,0 +1,14 @@
+FILE /classes.kt
+  CLASS CLASS TestClass
+    FUN public constructor TestClass()
+      BLOCK_BODY
+  CLASS INTERFACE TestInterface
+  CLASS OBJECT TestObject
+    FUN private constructor TestObject()
+      BLOCK_BODY
+  CLASS ANNOTATION_CLASS TestAnnotationClass
+    FUN public constructor TestAnnotationClass()
+      BLOCK_BODY
+  CLASS ENUM_CLASS TestEnumClass
+    FUN private constructor TestEnumClass()
+      BLOCK_BODY

compiler/testData/ir/irText/classes/companionObject.kt

@@ -0,0 +1,8 @@
+class Test1 {
+    companion object
+}
+
+class Test2 {
+    companion object Named
+}
+

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

@@ -0,0 +1,13 @@
+FILE /companionObject.kt
+  CLASS CLASS Test1
+    FUN public constructor Test1()
+      BLOCK_BODY
+    CLASS OBJECT Companion
+      FUN private constructor Companion()
+        BLOCK_BODY
+  CLASS CLASS Test2
+    FUN public constructor Test2()
+      BLOCK_BODY
+    CLASS OBJECT Named
+      FUN private constructor Named()
+        BLOCK_BODY

compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java

@@ -55,6 +55,18 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
             doTest(fileName);
         }
 
+        @TestMetadata("classes.kt")
+        public void testClasses() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/ir/irText/classes/classes.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("companionObject.kt")
+        public void testCompanionObject() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/ir/irText/classes/companionObject.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("delegatingConstructorCallsInSecondaryConstructors.kt")
         public void testDelegatingConstructorCallsInSecondaryConstructors() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/ir/irText/classes/delegatingConstructorCallsInSecondaryConstructors.kt");