[FIR] Update backend tests with actual/expect in same module

- The fix for KT-55570 caused some backend tests to fail, because errors
  are now correctly reported for simple classes and actual/expect in
  the same module is not supported in FIR. See KT-55177.
- The commit also adds separate tests for K2. Unfortunately, these have
  to be disabled for K1 because K1 then reports "expect without actual"
  errors.

compiler/testData/ir/irText/declarations/multiplatform/expectedEnumClass.kt

@@ -1,4 +1,6 @@
 // !LANGUAGE: +MultiPlatformProjects
+// IGNORE_BACKEND_K2: ANY
+// FIR status: In FIR, declaring the same `expect` and `actual` classes in one compiler module is not possible (see KT-55177).
 
 expect enum class MyEnum {
     FOO,

compiler/testData/ir/irText/declarations/multiplatform/expectedEnumClass2.ir.txt

@@ -1,60 +1,4 @@
-FILE fqName:<root> fileName:/expectedEnumClass.kt
-  CLASS ENUM_CLASS name:MyEnum modality:FINAL visibility:public [expect] superTypes:[kotlin.Enum<<root>.MyEnum>]
-    $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.MyEnum
-    CONSTRUCTOR visibility:private <> () returnType:<root>.MyEnum [primary,expect]
-    ENUM_ENTRY name:FOO
-      init: EXPRESSION_BODY
-        ENUM_CONSTRUCTOR_CALL 'private constructor <init> () [primary,expect] declared in <root>.MyEnum'
-    ENUM_ENTRY name:BAR
-      init: EXPRESSION_BODY
-        ENUM_CONSTRUCTOR_CALL 'private constructor <init> () [primary,expect] declared in <root>.MyEnum'
-    FUN ENUM_CLASS_SPECIAL_MEMBER name:values visibility:public modality:FINAL <> () returnType:kotlin.Array<<root>.MyEnum> [expect]
-    FUN ENUM_CLASS_SPECIAL_MEMBER name:valueOf visibility:public modality:FINAL <> (value:kotlin.String) returnType:<root>.MyEnum [expect]
-      VALUE_PARAMETER name:value index:0 type:kotlin.String
-    PROPERTY ENUM_CLASS_SPECIAL_MEMBER name:entries visibility:public modality:FINAL [expect,val]
-      FUN ENUM_CLASS_SPECIAL_MEMBER name:<get-entries> visibility:public modality:FINAL <> () returnType:kotlin.enums.EnumEntries
-        correspondingProperty: PROPERTY ENUM_CLASS_SPECIAL_MEMBER name:entries visibility:public modality:FINAL [expect,val]
-        SYNTHETIC_BODY kind=ENUM_ENTRIES
-    FUN FAKE_OVERRIDE name:clone visibility:protected modality:FINAL <> ($this:kotlin.Enum<E of kotlin.Enum>) returnType:kotlin.Any [expect,fake_override]
-      overridden:
-        protected final fun clone (): kotlin.Any declared in kotlin.Enum
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Enum<E of kotlin.Enum>
-    FUN FAKE_OVERRIDE name:compareTo visibility:public modality:FINAL <> ($this:kotlin.Enum<E of kotlin.Enum>, other:<root>.MyEnum) returnType:kotlin.Int [expect,fake_override,operator]
-      overridden:
-        public final fun compareTo (other: E of kotlin.Enum): kotlin.Int [operator] declared in kotlin.Enum
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Enum<E of kotlin.Enum>
-      VALUE_PARAMETER name:other index:0 type:<root>.MyEnum
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:FINAL <> ($this:kotlin.Enum<E of kotlin.Enum>, other:kotlin.Any?) returnType:kotlin.Boolean [expect,fake_override,operator]
-      overridden:
-        public final fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Enum
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Enum<E of kotlin.Enum>
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:FINAL <> ($this:kotlin.Enum<E of kotlin.Enum>) returnType:kotlin.Int [expect,fake_override]
-      overridden:
-        public final fun hashCode (): kotlin.Int declared in kotlin.Enum
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Enum<E of kotlin.Enum>
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Enum<E of kotlin.Enum>) returnType:kotlin.String [expect,fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Enum
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Enum<E of kotlin.Enum>
-    PROPERTY FAKE_OVERRIDE name:name visibility:public modality:FINAL [expect,fake_override,val]
-      annotations:
-        IntrinsicConstEvaluation
-      overridden:
-        public final name: kotlin.String [val]
-      FUN FAKE_OVERRIDE name:<get-name> visibility:public modality:FINAL <> ($this:kotlin.Enum<E of kotlin.Enum>) returnType:kotlin.String [fake_override]
-        correspondingProperty: PROPERTY FAKE_OVERRIDE name:name visibility:public modality:FINAL [expect,fake_override,val]
-        overridden:
-          public final fun <get-name> (): kotlin.String declared in kotlin.Enum
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Enum<E of kotlin.Enum>
-    PROPERTY FAKE_OVERRIDE name:ordinal visibility:public modality:FINAL [expect,fake_override,val]
-      overridden:
-        public final ordinal: kotlin.Int [val]
-      FUN FAKE_OVERRIDE name:<get-ordinal> visibility:public modality:FINAL <> ($this:kotlin.Enum<E of kotlin.Enum>) returnType:kotlin.Int [fake_override]
-        correspondingProperty: PROPERTY FAKE_OVERRIDE name:ordinal visibility:public modality:FINAL [expect,fake_override,val]
-        overridden:
-          public final fun <get-ordinal> (): kotlin.Int declared in kotlin.Enum
-        $this: VALUE_PARAMETER name:<this> type:kotlin.Enum<E of kotlin.Enum>
+FILE fqName:<root> fileName:/main.kt
   CLASS ENUM_CLASS name:MyEnum modality:FINAL visibility:public superTypes:[kotlin.Enum<<root>.MyEnum>]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.MyEnum
     CONSTRUCTOR visibility:private <> () returnType:<root>.MyEnum [primary]

compiler/testData/ir/irText/declarations/multiplatform/expectedEnumClass2.kt

@@ -0,0 +1,18 @@
+// FIR_IDENTICAL
+// !LANGUAGE: +MultiPlatformProjects
+// IGNORE_BACKEND_K1: ANY
+
+// MODULE: lib
+// FILE: lib.kt
+expect enum class MyEnum {
+    FOO,
+    BAR
+}
+
+// MODULE: main()()(lib)
+// FILE: main.kt
+actual enum class MyEnum {
+    FOO,
+    BAR,
+    BAZ
+}

compiler/testData/ir/irText/declarations/multiplatform/expectedEnumClass2.kt.txt

@@ -1,15 +1,4 @@
-expect enum class MyEnum : Enum<MyEnum> {
-  private expect constructor() /* primary */
-  FOO = MyEnum()
-
-  BAR = MyEnum()
-
-  expect fun values(): Array<MyEnum>
-  expect fun valueOf(value: String): MyEnum
-  expect val entries: EnumEntries
-    get(): EnumEntries /* Synthetic body for ENUM_ENTRIES */
-
-}
+// FILE: main.kt
 
 enum class MyEnum : Enum<MyEnum> {
   private constructor() /* primary */ {
@@ -32,4 +21,3 @@ enum class MyEnum : Enum<MyEnum> {
     get(): EnumEntries /* Synthetic body for ENUM_ENTRIES */
 
 }
-