Fix Array.include return a wrapped Boolean

src/org/mozilla/javascript/NativeArray.java

@@ -351,7 +351,7 @@ public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
                 return js_lastIndexOf(cx, scope, thisObj, args);
 
               case Id_includes:
-                return ScriptRuntime.toObject(cx, scope, ((long) js_indexOf(cx, scope, thisObj, args)) > -1);
+                return Boolean.valueOf(((long) js_indexOf(cx, scope, thisObj, args)) > -1);
 
               case Id_fill:
                 return js_fill(cx, scope, thisObj, args);

testsrc/jstests/es7-array-includes.js

@@ -0,0 +1,5 @@
+load("testsrc/assert.js");
+
+assertEquals(2, [1, 2, 3, 4].filter(t => [1, 2].includes(t)).length);
+
+"success";

testsrc/org/mozilla/javascript/tests/ES7ArrayIncludesTest.java

@@ -0,0 +1,16 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.javascript.tests;
+
+import org.mozilla.javascript.Context;
+import org.mozilla.javascript.drivers.LanguageVersion;
+import org.mozilla.javascript.drivers.RhinoTest;
+import org.mozilla.javascript.drivers.ScriptTestsBase;
+
+@RhinoTest("testsrc/jstests/es7-array-includes.js")
+@LanguageVersion(Context.VERSION_ES6)
+public class ES7ArrayIncludesTest extends ScriptTestsBase {
+}
+