/**
* Test that a null model does not append an empty attribute
* https://issues.apache.org/jira/browse/WICKET-3884
*/
@Test
public void nullModelDoesNotAppendEmptyAttribute() {
AttributeModifier appender = AttributeModifier.append("class", null);
XmlTag xmlTag = new XmlTag();
ComponentTag tag = new ComponentTag(xmlTag);
appender.replaceAttributeValue(null, tag);
Map<String, Object> attributes = tag.getAttributes();
assertTrue(attributes.isEmpty());
}
/**
* Tests {@link AttributeModifier#remove(String)}
*
* <p>https://issues.apache.org/jira/browse/WICKET-3934
*/
@Test
public void removeAttribute() {
AttributeModifier appender = AttributeModifier.remove("class");
XmlTag xmlTag = new XmlTag();
ComponentTag tag = new ComponentTag(xmlTag);
Map<String, Object> attributes = tag.getAttributes();
attributes.put("class", "someValue");
appender.replaceAttributeValue(null, tag);
assertTrue(attributes.isEmpty());
}
/** Test that a null model does not throw null pointers. */
@Test
public void nullModelDoesNotThrowNullPointerExceptions() {
AttributeModifier modifier = new AttributeModifier("test", null);
XmlTag xmlTag = new XmlTag();
ComponentTag tag = new ComponentTag(xmlTag);
tag.setId("foo");
tag.setName("test");
modifier.replaceAttributeValue(null, tag);
Map<String, Object> attributes = tag.getAttributes();
assertTrue(attributes.isEmpty());
}
/**
* Add an attribute with name equal (Object#equals()) to the special {@link
* AttributeModifier#VALUELESS_ATTRIBUTE_REMOVE} but not identity equal
*
* <p>https://issues.apache.org/jira/browse/WICKET-3934
*/
@Test
public void appendSpecialAttribute() {
String attrName = "attrName";
AttributeModifier appender = AttributeModifier.append(attrName, "VA_REMOVE");
XmlTag xmlTag = new XmlTag();
ComponentTag tag = new ComponentTag(xmlTag);
Map<String, Object> attributes = tag.getAttributes();
attributes.put(attrName, "VA_REMOVE");
appender.replaceAttributeValue(null, tag);
assertFalse(attributes.isEmpty());
assertEquals("VA_REMOVE VA_REMOVE", attributes.get(attrName));
}
/** Test simple model replacement. */
@Test
public void testModelReplacement() {
AttributeModifier modifier = new AttributeModifier("test", Model.of("Ellioth Smith Rocks"));
XmlTag xmlTag = new XmlTag();
ComponentTag tag = new ComponentTag(xmlTag);
tag.setId("test");
tag.setName("id");
modifier.replaceAttributeValue(null, tag);
Map<String, Object> attributes = tag.getAttributes();
assertTrue(!attributes.isEmpty());
String replacement = (String) attributes.get("test");
assertNotNull(replacement);
assertEquals("Ellioth Smith Rocks", replacement);
}
/** Test that that the attribute modifier does nothing with not enabled. */
@Test
public void testNoNewValueWhenNotEnabled() {
AttributeModifier modifier =
new AttributeModifier("test", Model.of("Ellioth Smith Rocks")) {
@Override
public boolean isEnabled(Component component) {
return false;
}
};
XmlTag xmlTag = new XmlTag();
ComponentTag tag = new ComponentTag(xmlTag);
tag.setId("test");
tag.setName("id");
Map<String, Object> attributes = tag.getAttributes();
attributes.put("test", "My mother rocks");
modifier.replaceAttributeValue(null, tag);
String replacement = (String) attributes.get("test");
assertNotNull(replacement);
assertEquals("My mother rocks", replacement);
}
/** Test overriding newValue (and using a null model). */
@Test
public void testNewValue() {
AttributeModifier modifier =
new AttributeModifier("test", null) {
private static final long serialVersionUID = 1L;
@Override
protected String newValue(String currentValue, String replacementValue) {
return "the replacement";
}
};
XmlTag xmlTag = new XmlTag();
ComponentTag tag = new ComponentTag(xmlTag);
tag.setId("test");
tag.setName("id");
modifier.replaceAttributeValue(null, tag);
Map<String, Object> attributes = tag.getAttributes();
assertTrue(!attributes.isEmpty());
String replacement = (String) attributes.get("test");
assertNotNull(replacement);
assertEquals("the replacement", replacement);
}