[K/N][Tests] Migrate objcSmoke & objcTests tests

^KT-61259

native/native.tests/testData/interop/objc/tests/blocks.kt

@@ -0,0 +1,21 @@
+import kotlinx.cinterop.*
+import kotlin.test.*
+import objcTests.*
+
+@Test fun testBlocks() {
+    assertTrue(Blocks.blockIsNull(null))
+    assertFalse(Blocks.blockIsNull({}))
+
+    assertEquals(null, Blocks.nullBlock)
+    assertNotEquals(null, Blocks.notNullBlock)
+
+    assertEquals(10, Blocks.same({ a, b, c, d -> a + b + c + d })!!(1, 2, 3, 4))
+
+    assertEquals(222, callProvidedBlock(object : NSObject(), BlockProviderProtocol {
+        override fun block(): (Int) -> Int = { it * 2 }
+    }, 111))
+
+    assertEquals(322, callPlusOneBlock(object : NSObject(), BlockConsumerProtocol {
+        override fun callBlock(block: ((Int) -> Int)?, argument: Int) = block!!(argument)
+    }, 321))
+}