String <-> CharArray conversion, ArrayBuilder by @elizarov (#98)

backend.native/tests/runtime/basic/tostring2.kt

@@ -0,0 +1,10 @@
+fun main(args : Array<String>) {
+    val hello = "Hello"
+    val array = toCharArray(hello)
+    for (ch in array) {
+        print(ch)
+        print(" ")
+    }
+    println()
+    println(fromCharArray(array, 0, array.size))
+}

backend.native/tests/runtime/collections/array_list1.kt

@@ -182,6 +182,12 @@ fun testToString() {
     assertTrue(a.toString() == makeList123().toString())
 }
 
+fun testToString2() {
+    val a = makeList123()
+    assertEquals(a.toString(), "[1, 2, 3]")
+}
+
+
 fun testSubList() {
     val a0 = makeList01234()
     val a = a0.subList(1, 4)
@@ -271,11 +277,12 @@ fun testIteratorAdd() {
         val next = it.next()
         if (i++ % 2 == 0)
             it.add("-" + next)
-        it.next()
     }
     //assertEquals(listOf("1", "2", "-2", "3", "4", "-4", "5"), a)
 }
 
+
+
 fun main(args : Array<String>) {
     testBasic()
     testIterator()
@@ -286,6 +293,7 @@ fun main(args : Array<String>) {
     testEquals()
     testHashCode()
     testToString()
+    testToString2()
     testSubList()
     testResize()
     testSubListContains()

backend.native/tests/runtime/text/string_builder0.kt

@@ -0,0 +1,46 @@
+fun assertTrue(cond: Boolean) {
+    if (!cond)
+        println("FAIL")
+}
+
+fun assertFalse(cond: Boolean) {
+    if (cond)
+        println("FAIL")
+}
+
+fun assertEquals(value1: String, value2: String) {
+    if (value1 != value2)
+        println("FAIL: '" + value1 + "' != '" + value2 + "'")
+}
+
+fun assertEquals(value1: Int, value2: Int) {
+    if (value1 != value2)
+        println("FAIL" + value1.toString() + " != " + value2.toString())
+}
+
+fun testBasic() {
+    val sb = StringBuilder()
+    assertEquals(0, sb.length)
+    assertEquals("", sb.toString())
+    sb.append(1)
+    assertEquals(1, sb.length)
+    assertEquals("1", sb.toString())
+    sb.append(", ")
+    assertEquals(3, sb.length)
+    assertEquals("1, ", sb.toString())
+    sb.append(true)
+    assertEquals(7, sb.length)
+    assertEquals("1, true", sb.toString())
+    sb.append(12345678L)
+    assertEquals(15, sb.length)
+    assertEquals("1, true12345678", sb.toString())
+
+    sb.length = 0
+    assertEquals(0, sb.length)
+    assertEquals("", sb.toString())
+}
+
+fun main(args : Array<String>) {
+    testBasic()
+    println("OK")
+}