fix name property for bound functions (see issue mozilla#1297)

src/org/mozilla/javascript/BoundFunction.java

@@ -77,6 +77,14 @@ public int getLength() {
         return length;
     }
 
+    @Override
+    public String getFunctionName() {
+        if (targetFunction instanceof BaseFunction) {
+            return "bound " + ((BaseFunction) targetFunction).getFunctionName();
+        }
+        return "";
+    }
+
     private static Object[] concat(Object[] first, Object[] second) {
         Object[] args = new Object[first.length + second.length];
         System.arraycopy(first, 0, args, 0, first.length);

testsrc/org/mozilla/javascript/tests/es6/BoundFunctionTest.java

@@ -0,0 +1,43 @@
+/* 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/. */
+
+/*
+ * Tests for the Object.getOwnPropertyDescriptor(obj, prop) method
+ */
+package org.mozilla.javascript.tests.es6;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mozilla.javascript.Context;
+import org.mozilla.javascript.ScriptableObject;
+import org.mozilla.javascript.TopLevel;
+
+public class BoundFunctionTest {
+
+    private Context cx;
+    private ScriptableObject scope;
+
+    @Before
+    public void setUp() {
+        cx = Context.enter();
+        cx.setLanguageVersion(Context.VERSION_ES6);
+        scope = cx.initSafeStandardObjects(new TopLevel(), false);
+    }
+
+    @After
+    public void tearDown() {
+        Context.exit();
+    }
+
+    @Test
+    public void ctorCallableThis() {
+        Object result =
+                cx.evaluateString(
+                        scope, "  function foo() {};\n" + " foo.bind({}).name;", "test", 1, null);
+        assertEquals("bound foo", result);
+    }
+}

testsrc/test262.properties

@@ -494,7 +494,7 @@ built-ins/eval 3/9 (33.33%)
     name.js
     private-identifiers-not-empty.js {unsupported: [class-fields-private]}
 
-built-ins/Function 187/505 (37.03%)
+built-ins/Function 186/505 (36.83%)
     internals/Call 2/2 (100.0%)
     internals/Construct 6/6 (100.0%)
     length/S15.3.5.1_A1_T3.js strict
@@ -532,7 +532,6 @@ built-ins/Function 187/505 (37.03%)
     prototype/bind/instance-name.js
     prototype/bind/instance-name-chained.js
     prototype/bind/instance-name-error.js
-    prototype/bind/instance-name-non-string.js
     prototype/bind/proto-from-ctor-realm.js {unsupported: [Reflect]}
     prototype/call/15.3.4.4-1-s.js strict
     prototype/call/15.3.4.4-2-s.js strict