backend/tests: Add blackbox tests from Kotlin JVM

Added tests from testData/codegen/box directory. There are blackbox tests
in other directories and they are to be added.

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/alreadyDeclared.kt

@@ -0,0 +1,7 @@
+data class A(val x: Int) {
+  override fun hashCode(): Int = -3
+}
+
+fun box(): String {
+  return if (A(0).hashCode() == -3) "OK" else "fail"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/alreadyDeclaredWrongSignature.kt

@@ -0,0 +1,22 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS
+
+// WITH_RUNTIME
+
+data class A(val x: Int) {
+  fun hashCode(other: Any): Int = 0
+}
+
+data class B(val x: Int) {
+  fun hashCode(other: B, another: Any): Int = 0
+}
+
+fun box(): String {
+  A::class.java.getDeclaredMethod("hashCode")
+  A::class.java.getDeclaredMethod("hashCode", Any::class.java)
+
+  B::class.java.getDeclaredMethod("hashCode")
+  B::class.java.getDeclaredMethod("hashCode", B::class.java, Any::class.java)
+
+  return "OK"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/array.kt

@@ -0,0 +1,9 @@
+// TODO: muted automatically, investigate should it be ran for JS or not
+// IGNORE_BACKEND: JS
+
+data class A(val a: IntArray, var b: Array<String>)
+
+fun box() : String {
+   if( A(intArrayOf(1,2,3),arrayOf("239")).hashCode() != 31*java.util.Arrays.hashCode(intArrayOf(0,1,2)) + "239".hashCode()) "fail"
+   return "OK"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/boolean.kt

@@ -0,0 +1,5 @@
+data class A(val a: Boolean)
+
+fun box() : String {
+   return if( A(true).hashCode()==1 && A(false).hashCode()==0 ) "OK" else "fail"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/byte.kt

@@ -0,0 +1,7 @@
+data class A(val a: Byte)
+
+fun box() : String {
+   val v1 = A(10.toByte()).hashCode()
+   val v2 = (10.toByte() as Byte?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/char.kt

@@ -0,0 +1,7 @@
+data class A(val a: Char)
+
+fun box() : String {
+   val v1 = A('a').hashCode()
+   val v2 = ('a' as Char?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/double.kt

@@ -0,0 +1,7 @@
+data class A(val a: Double)
+
+fun box() : String {
+   val v1 = A(-10.toDouble()).hashCode()
+   val v2 = (-10.toDouble() as Double?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/float.kt

@@ -0,0 +1,7 @@
+data class A(val a: Float)
+
+fun box() : String {
+   val v1 = A(-10.toFloat()).hashCode()
+   val v2 = (-10.toFloat() as Float?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/genericNull.kt

@@ -0,0 +1,7 @@
+data class A<T>(val t: T)
+
+fun box(): String {
+    val h = A<String?>(null).hashCode()
+    if (h != 0) return "Fail $h"
+    return "OK"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/int.kt

@@ -0,0 +1,7 @@
+data class A(val a: Int)
+
+fun box() : String {
+   val v1 = A(-10.toInt()).hashCode()
+   val v2 = (-10.toInt() as Int?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/long.kt

@@ -0,0 +1,7 @@
+data class A(val a: Long)
+
+fun box() : String {
+   val v1 = A(-10.toLong()).hashCode()
+   val v2 = (-10.toLong() as Long?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/null.kt

@@ -0,0 +1,16 @@
+data class A(val a: Any?, var x: Int)
+data class B(val a: Any?)
+data class C(val a: Int, var x: Int?)
+data class D(val a: Int?)
+
+fun box() : String {
+   if( A(null,19).hashCode() != 19) "fail"
+   if( A(239,19).hashCode() != (239*31+19)) "fail"
+   if( B(null).hashCode() != 0) "fail"
+   if( B(239).hashCode() != 239) "fail"
+   if( C(239,19).hashCode() != (239*31+19)) "fail"
+   if( C(239,null).hashCode() != 239*31) "fail"
+   if( D(239).hashCode() != (239)) "fail"
+   if( D(null).hashCode() != 0) "fail"
+   return "OK"
+}

backend.native/tests/external/codegen/blackbox/dataClasses/hashCode/short.kt

@@ -0,0 +1,7 @@
+data class A(val a: Short)
+
+fun box() : String {
+   val v1 = A(10.toShort()).hashCode()
+   val v2 = (10.toShort() as Short?)!!.hashCode()
+   return if( v1 == v2 ) "OK" else "$v1 $v2"
+}