GROOVY-11252: StringGroovyMethods should have a getCodePoints method

src/main/java/org/codehaus/groovy/runtime/StringGroovyMethods.java

@@ -1470,6 +1470,19 @@ public static char[] getChars(final CharSequence self) {
         return self.toString().toCharArray();
     }
 
+    /**
+     * Converts the given CharSequence into an array of code point values including any surrogate pairs
+     * as per {@link String#codePoints()}.
+     *
+     * @param self a CharSequence
+     * @return an array of ints
+     *
+     * @since 5.0.0
+     */
+    public static int[] getCodePoints(final CharSequence self) {
+        return self.codePoints().toArray();
+    }
+
     /**
      * Finds the number of Strings matched to the given Matcher.
      *

src/test/groovy/GroovyCharSequenceMethodsTest.groovy

@@ -349,6 +349,15 @@ class GroovyCharSequenceMethodsTest extends GroovyTestCase {
         assert chars[-1] == 'r'
     }
 
+    void testGetCodePoints() {
+        def ints = cs2.codePoints
+        assert ints instanceof int[]
+        assert ints.size() == 6
+        assert ints[0] == 70
+        assert ints[3] == 98
+        assert ints[-1] == 114
+    }
+
     private enum Coin { penny, nickel, dime, quarter }
     void testAsType() {
         def csDime = makeCharSequence('dime')