Add sanity check for CHM 3 args constructor

Bug: 235492319
Change-Id: I55f8a881c97e862960216953a0e7dde8a97e3850
diff --git a/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/ConcurrentHashMapSubclassTest.java b/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/ConcurrentHashMapSubclassTest.java
index 4022ff8..bcee062 100644
--- a/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/ConcurrentHashMapSubclassTest.java
+++ b/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/ConcurrentHashMapSubclassTest.java
@@ -25,7 +25,8 @@
 public class ConcurrentHashMapSubclassTest extends DesugaredLibraryTestBase {
 
   private static final String EXPECTED_RESULT =
-      StringUtils.lines("1.0", "2.0", "10.0", "1.0", "2.0", "10.0", "1.0", "2.0", "10.0");
+      StringUtils.lines(
+          "1.0", "2.0", "10.0", "1.0", "2.0", "10.0", "1.0", "2.0", "10.0", "1.0", "2.0", "10.0");
 
   private final TestParameters parameters;
   private final CompilationSpecification compilationSpecification;
@@ -64,11 +65,28 @@
   @SuppressWarnings("unchecked")
   static class Executor {
     public static void main(String[] args) {
+      constructorTest();
       directType();
       classType();
       itfType();
     }
 
+    private static void constructorTest() {
+      Map map =
+          new ConcurrentHashMap<>(
+              5, // initial capacity
+              0.75f, // load factor (default)
+              1 // concurrency level - only one thread will modify, others read only
+              );
+      map.put(1, 1.0);
+      map.putIfAbsent(2, 2.0);
+      map.putIfAbsent(2, 3.0);
+      map.putAll(example());
+      System.out.println(map.get(1));
+      System.out.println(map.get(2));
+      System.out.println(map.get(10));
+    }
+
     static void itfType() {
       Map map = new NullableConcurrentHashMap<Integer, Double>();
       map.put(1, 1.0);