Native: add more tests for Swift Set and Dictionary used in Kotlin

(cherry picked from commit 38f2b20)

kotlin-native/backend.native/tests/framework/stdlib/stdlib.kt

@@ -7,6 +7,8 @@
 
 package stdlib
 
+import kotlin.test.*
+
 fun <K, V> isEmpty(map: Map<K, V>) = map.isEmpty()
 
 fun <K, V> getKeysAsSet(map: Map<K, V>) = map.keys
@@ -61,4 +63,67 @@ data class TripleVars<T>(var first: T, var second: T, var third: T) {
     }
 }
 
-fun gc() = kotlin.native.internal.GC.collect()
+fun gc() = kotlin.native.internal.GC.collect()
+
+// Note: this method checks only some of the operations (namely the ones modified recently,
+// and thus required additional tests).
+// More tests are absolutely needed.
+@Throws(Throwable::class)
+@Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER")
+fun testSet(set: Set<String>) {
+    set as kotlin.native.internal.KonanSet<String> // Smart cast to access getElement below.
+    val setAny: Set<Any?> = set
+
+    assertTrue(set.contains("a"))
+    assertTrue(set.contains("c"))
+    assertFalse(set.contains("h"))
+    assertFalse(setAny.contains(1))
+
+
+    assertEquals("a", set.getElement("a"))
+    assertNull(set.getElement("aa"))
+    assertNull((setAny as kotlin.native.internal.KonanSet<Any?>).getElement(1))
+}
+
+// Note: this method checks only some of the operations (namely the ones modified recently,
+// and thus required additional tests).
+// More tests are absolutely needed.
+@Throws(Throwable::class)
+fun testMap(map: Map<String, Int>) {
+    val mapAny: Map<String, Any?> = map
+    val mapKeysAny: Set<Any?> = map.keys
+    val mapEntriesAny: Set<Map.Entry<Any?, Any?>> = map.entries
+
+    assertTrue(map.containsKey("a"))
+    assertTrue(map.keys.contains("b"))
+    assertTrue(map.containsKey("g"))
+    assertFalse(map.containsKey("0"))
+    assertFalse(mapKeysAny.contains(1))
+
+    assertTrue(map.containsValue(1))
+    assertTrue(map.values.contains(2))
+    assertTrue(map.containsValue(7))
+    assertFalse(map.containsValue(8))
+    assertFalse(mapAny.containsValue("8"))
+
+    assertEquals(2, map.get("b"))
+    assertEquals(4, map.get("d"))
+    assertNull(map.get("h"))
+
+    val referenceMap = (0 until 7).map { ('a' + it).toString() to (it + 1) }.toMap()
+    assertEquals(referenceMap.hashCode(), map.hashCode())
+    assertEquals(referenceMap, map)
+    assertEquals(map, referenceMap)
+
+    assertEquals(28, map.entries.sumBy { it.value })
+
+    assertTrue(map.entries.contains(createMapEntry("e", 5)))
+    assertTrue(map.entries.contains(createMapEntry("g", 7)))
+    assertFalse(map.entries.contains(createMapEntry("e", 7)))
+    assertFalse(map.entries.contains(createMapEntry("e", 10)))
+    assertFalse(map.entries.contains(createMapEntry("10", 5)))
+    assertFalse(map.entries.contains(createMapEntry("10", 10)))
+    assertFalse(mapEntriesAny.contains(createMapEntry(5, "e")))
+}
+
+private fun <K, V> createMapEntry(key: K, value: V) = mapOf(key to value).entries.single()

kotlin-native/backend.native/tests/framework/stdlib/stdlib.swift

@@ -50,6 +50,8 @@ class StdlibTests : TestProvider {
             TestCase(name: "TestMutableMap", method: withAutorelease(testMutableMap)),
             TestCase(name: "TestKotlinMutableSetInit", method: withAutorelease(testKotlinMutableSetInit)),
             TestCase(name: "TestKotlinMutableDictionaryInit", method: withAutorelease(testKotlinMutableDictionaryInit)),
+            TestCase(name: "TestSwiftSetInKotlin", method: withAutorelease(testSwiftSetInKotlin)),
+            TestCase(name: "TestSwiftDictionaryInKotlin", method: withAutorelease(testSwiftDictionaryInKotlin)),
         ]
         providers.append(self)
     }
@@ -459,4 +461,12 @@ class StdlibTests : TestProvider {
         StdlibKt.gc() // To reproduce https://github.com/JetBrains/kotlin-native/issues/3259
     }
 
+    func testSwiftSetInKotlin() throws {
+        try StdlibKt.testSet(set: ["a", "b", "c", "d", "e", "f", "g"])
+    }
+
+    func testSwiftDictionaryInKotlin() throws {
+        try StdlibKt.testMap(map: ["a" : 1, "b" : 2, "c" : 3, "d" : 4, "e" : 5, "f" : 6, "g" : 7])
+    }
+
 }