JsUtilityTest.java 文件源码

@NoDriver
@Test(expectedExceptions = {AssertionError.class},
        expectedExceptionsMessageRegExp = "JsUtility is a static utility class that cannot be instantiated")
public void testPrivateConstructor() throws Throwable {

    Constructor<?>[] ctors;
    ctors = JsUtility.class.getDeclaredConstructors();
    assertEquals(ctors.length, 1, "JsUtility must have exactly one constructor");
    assertEquals(ctors[0].getModifiers() & Modifier.PRIVATE, Modifier.PRIVATE,
                    "JsUtility constructor must be private");
    assertEquals(ctors[0].getParameterTypes().length, 0, "JsUtility constructor must have no arguments");

    try {
        ctors[0].setAccessible(true);
        ctors[0].newInstance();
    } catch (InvocationTargetException e) {
        throw e.getCause();
    }
}