nashorn/test/script/basic/JDK-8129410.js

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/**
 * JDK-8129410: Java adapters with class-level overrides should preserve variable arity constructors
 *
 * @test
 * @run
 */

var VarArgConstructor = Java.type("jdk.nashorn.test.models.VarArgConstructor");
var VarArgConstructorExtended = Java.extend(VarArgConstructor, {});

// If the fix didn't work we wouldn't even get past the constructor invocation
// as it'd complain there's no matching arity constructor.
var newExtended = new VarArgConstructorExtended(1, true, "a", "b");

// Assert the expected constructor was invoked.
Assert.assertEquals("vararg", newExtended.indicator);