Introduce FIR_IDENTICAL for FIR vs old frontend tests #KT-36879 Fixed

compiler/testData/diagnostics/tests/multimodule/duplicateClass/collectionMethodStub.fir.kt

@@ -1,21 +0,0 @@
-// FILE: f1.kt
-// SKIP_TXT
-
-package kotlin
-
-class Unit
-
-// FILE: f2.kt
-
-class C: MutableIterator<Int> {
-    override fun remove(): Unit {
-        throw UnsupportedOperationException()
-    }
-    override fun next(): Int {
-        throw UnsupportedOperationException()
-    }
-    override fun hasNext(): Boolean {
-        throw UnsupportedOperationException()
-    }
-
-}

compiler/testData/diagnostics/tests/multimodule/duplicateClass/collectionMethodStub.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: f1.kt
 // SKIP_TXT
 

compiler/testData/diagnostics/tests/multimodule/duplicateClass/duplicateClass.fir.kt

@@ -1,32 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE
-// MODULE: m1
-// FILE: a.kt
-
-package p
-
-public class A
-public class B {
-    public val a: A = A()
-}
-
-// MODULE: m2
-// FILE: b.kt
-
-package p
-
-public class A {
-    val x = 1
-}
-
-public fun foo(a: A) {
-    a.x + 1
-}
-
-// MODULE: m3(m1, m2)
-// FILE: b.kt
-
-import p.*
-
-fun test() {
-    foo(B().a)
-}

compiler/testData/diagnostics/tests/multimodule/duplicateClass/duplicateClass.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 // MODULE: m1
 // FILE: a.kt

compiler/testData/diagnostics/tests/multimodule/duplicateClass/duplicateSuperClass.fir.kt

@@ -1,30 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
-// MODULE: m1
-// FILE: a.kt
-
-package p
-
-public interface A
-public class B : A
-public class M1 {
-    public val b: B = B()
-}
-
-// MODULE: m2
-// FILE: b.kt
-
-package p
-
-public interface A
-
-public fun foo(a: A) {
-}
-
-// MODULE: m3(m1, m2)
-// FILE: b.kt
-
-import p.*
-
-fun test() {
-    foo(M1().b)
-}

compiler/testData/diagnostics/tests/multimodule/duplicateClass/duplicateSuperClass.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
 // MODULE: m1
 // FILE: a.kt

compiler/testData/diagnostics/tests/multimodule/duplicateClass/inTheSameModuleWithUsage.fir.kt

@@ -1,23 +0,0 @@
-// MODULE: m1
-// FILE: a.kt
-
-package p
-
-public class A
-public class B {
-    public val a: A = A()
-}
-
-// MODULE: m2(m1)
-// FILE: b.kt
-
-package p
-
-class A {
-    fun foo() {}
-}
-
-fun test() {
-    val a: A = B().a
-    a.foo()
-}

compiler/testData/diagnostics/tests/multimodule/duplicateClass/inTheSameModuleWithUsage.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // MODULE: m1
 // FILE: a.kt
 

compiler/testData/diagnostics/tests/multimodule/duplicateClass/sameGenericArguments.fir.kt

@@ -1,29 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
-// MODULE: m1
-// FILE: a.kt
-
-package p
-
-public class A<T>
-public class M1 {
-    public val a: A<Int> = A()
-}
-
-// MODULE: m2
-// FILE: b.kt
-
-package p
-
-public class A<T>
-
-public fun foo(a: A<Int>) {
-}
-
-// MODULE: m3(m1, m2)
-// FILE: b.kt
-
-import p.*
-
-fun test() {
-    foo(M1().a)
-}

compiler/testData/diagnostics/tests/multimodule/duplicateClass/sameGenericArguments.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VARIABLE -UNUSED_PARAMETER
 // MODULE: m1
 // FILE: a.kt