Move some tests from boxWithStdlib/ to box/

Move those tests which do not require neither stdlib nor reflect

compiler/testData/codegen/box/dataClasses/toString/alreadyDeclared.kt

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

compiler/testData/codegen/box/dataClasses/toString/arrayParams.kt

@@ -0,0 +1,14 @@
+data class A(val x: Array<Int>?, val y: IntArray?)
+
+fun box(): String {
+    var ts = A(Array<Int>(2, {it}), IntArray(3)).toString()
+    if(ts != "A(x=[0, 1], y=[0, 0, 0])") return ts
+
+    ts = A(null, IntArray(3)).toString()
+    if(ts != "A(x=null, y=[0, 0, 0])") return ts
+
+    ts = A(null, null).toString()
+    if(ts != "A(x=null, y=null)") return ts
+
+    return "OK"
+}

compiler/testData/codegen/box/dataClasses/toString/changingVarParam.kt

@@ -0,0 +1,11 @@
+data class A(var string: String)
+
+fun box(): String {
+    val a = A("Fail")
+    if(a.toString() != "A(string=Fail)") return "fail"
+
+    a.string = "OK"
+    if("$a" != "A(string=OK)") return a.toString()
+
+    return "OK"
+}

compiler/testData/codegen/box/dataClasses/toString/genericParam.kt

@@ -0,0 +1,11 @@
+data class A<T>(val x: T)
+
+fun box(): String {
+    val a = A(42)
+    if ("$a" != "A(x=42)") return "$a"
+    
+    val b = A(239.toLong())
+    if ("$b" != "A(x=239)") return "$b"
+    
+    return "OK"
+}

compiler/testData/codegen/box/dataClasses/toString/mixedParams.kt

@@ -0,0 +1,7 @@
+data class A(var x: Int, val z: Int?)
+
+fun box(): String {
+    val a = A(1, null)
+    if("$a" != "A(x=1, z=null)") return "$a"
+    return "OK"
+}

compiler/testData/codegen/box/dataClasses/toString/unitComponent.kt

@@ -0,0 +1,6 @@
+data class A(val x: Unit)
+
+fun box(): String {
+    val a = A(Unit)
+    return if ("$a" == "A(x=kotlin.Unit)") "OK" else "$a"
+}