### Question:
FluentListAssert extends AbstractFluentAssert<FluentListAssert, FluentList> implements ListStateAssert, ListAttributeAssert { @Override public FluentListAssert hasValue(String value) { List<String> actualValues = requiresNonEmpty(actual.values()); if (!actualValues.contains(value)) { failWithMessage("No selected elements have value: " + value + ". Actual values found : " + actualValues); } return this; } FluentListAssert(FluentList<? extends FluentWebElement> actual); @Override FluentListAssert isEmpty(); @Override FluentListAssert isNotEmpty(); @Override FluentListAssert hasSize(int expectedSize); @Override FluentListSizeBuilder hasSize(); @Override FluentListAssert hasText(String textToFind); @Override FluentListAssert hasTextContaining(String textToFind); @Override FluentListAssert hasTextMatching(String regexToBeMatched); @Override FluentListAssert hasNotText(String textToFind); @Override FluentListAssert hasNotTextContaining(String textToFind); @Override FluentListAssert hasId(String idToFind); @Override FluentListAssert hasClass(String classToFind); @Override FluentListAssert hasClasses(String... classesToFind); @Override FluentListAssert hasNotClass(String htmlClass); @Override FluentListAssert hasNotClasses(String... htmlClasses); @Override FluentListAssert hasValue(String value); @Override FluentListAssert hasName(String name); @Override FluentListAssert hasTagName(String tagName); @Override FluentListAssert hasDimension(Dimension dimension); @Override FluentListAssert hasAttributeValue(String attribute, String value); @Override ListAssert<String> hasAttribute(String attribute); @Override FluentListAssert hasNotAttribute(String attribute);  }### Answer:
@Test public void testHasValueOk() { when(fluentList.values()).thenReturn(Lists.newArrayList("1", "2", "3")); listAssert.hasValue("1"); }
@Test public void testHasValueKo() { when(fluentList.values()).thenReturn(Lists.newArrayList("1", "2", "3")); assertThatAssertionErrorIsThrownBy(() -> listAssert.hasValue("4")) .hasMessage("No selected elements have value: 4. Actual values found : [1, 2, 3]"); }