### Question:
Beans { public static boolean isPropertyWriter(String suspect) { if (suspect == null) return false; return WRITER_PATTERN.matcher(suspect).matches(); } private  Beans(); static String capitalize(String capitalizee); static String decapitalize(String decapitalizee); static String decapitalize(String decapitalizee, boolean doubleUppercaseEnable); static boolean isPropertyReader(String suspect); static boolean isPropertyWriter(String suspect); static boolean isPropertyAccessor(String suspect); static String generatePropertyNameFor(String accessorName); static T make(Class<T> clazz); static PropertyDescriptor[] findPropertyDescriptorsFor(Class<?> clazz); static PropertyDescriptor findPropertyDescriptorFor(Class<?> clazz, String propertyName); static Object readPropertyValueNamed(String propertyName, Object bean); static void writePropertyValueNamed(String propertyName, Object bean, Object newValue); static Object readPseudoPropertyValueNamed(String propertyName, Object bean); static void writePseudoPropertyValueNamed(String propertyName, Object bean, Object newValue); static String[] listPseudoPropertyNames(Class<?> clazz); static Class<?> detectDeclaredPropertyType(String propertyName, Class<?> target);  }### Answer:
@Test public void isPropertyWriterテスト() { assertTrue(Beans.isPropertyWriter("setHoge")); assertFalse(Beans.isPropertyWriter(null)); assertFalse(Beans.isPropertyWriter("")); assertFalse(Beans.isPropertyWriter("getClass")); assertFalse(Beans.isPropertyWriter("hasHoge")); }