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package com.vaadin.data;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import com.vaadin.tests.data.bean.BeanToValidate;
public class BeanBinderTest extends
BinderTestBase<BeanBinder<BeanToValidate>, BeanToValidate> {
@Before
public void setUp() {
binder = new BeanBinder<>(BeanToValidate.class);
item = new BeanToValidate();
item.setFirstname("Johannes");
item.setAge(32);
}
@Test
public void fieldBound_bindBean_fieldValueUpdated() {
binder.bind(nameField, "firstname");
binder.bind(item);
assertEquals("Johannes", nameField.getValue());
}
@Test
public void beanBound_bindField_fieldValueUpdated() {
binder.bind(item);
binder.bind(nameField, "firstname");
assertEquals("Johannes", nameField.getValue());
}
@Test(expected = IllegalArgumentException.class)
public void bindInvalidPropertyName_throws() {
binder.bind(nameField, "firstnaem");
}
@Test(expected = NullPointerException.class)
public void bindNullPropertyName_throws() {
binder.bind(nameField, null);
}
@Test(expected = IllegalArgumentException.class)
public void bindNonReadableProperty_throws() {
binder.bind(nameField, "writeOnlyProperty");
}
@Test
public void beanBound_setValidFieldValue_propertyValueChanged() {
binder.bind(item);
binder.bind(nameField, "firstname");
nameField.setValue("Henri");
assertEquals("Henri", item.getFirstname());
}
@Test
public void readOnlyPropertyBound_setFieldValue_ignored() {
binder.bind(nameField, "readOnlyProperty");
binder.bind(item);
String propertyValue = item.getReadOnlyProperty();
nameField.setValue("Foo");
assertEquals(propertyValue, item.getReadOnlyProperty());
}
@Test
public void beanBound_setInvalidFieldValue_validationError() {
binder.bind(item);
binder.bind(nameField, "firstname");
nameField.setValue("H"); // too short
assertEquals("Johannes", item.getFirstname());
assertInvalid(nameField, "size must be between 3 and 16");
}
@Test
public void beanNotBound_setInvalidFieldValue_validationError() {
binder.bind(nameField, "firstname");
nameField.setValue("H"); // too short
assertInvalid(nameField, "size must be between 3 and 16");
}
@Test
public void explicitValidatorAdded_setInvalidFieldValue_explicitValidatorRunFirst() {
binder.forField(nameField).withValidator(name -> name.startsWith("J"),
"name must start with J").bind("firstname");
nameField.setValue("A");
assertInvalid(nameField, "name must start with J");
}
@Test
public void explicitValidatorAdded_setInvalidFieldValue_beanValidatorRun() {
binder.forField(nameField).withValidator(name -> name.startsWith("J"),
"name must start with J").bind("firstname");
nameField.setValue("J");
assertInvalid(nameField, "size must be between 3 and 16");
}
@Test(expected = ClassCastException.class)
public void fieldWithIncompatibleTypeBound_bindBean_throws() {
binder.bind(ageField, "age");
binder.bind(item);
}
@Test(expected = ClassCastException.class)
public void fieldWithIncompatibleTypeBound_loadBean_throws() {
binder.bind(ageField, "age");
binder.load(item);
}
@Test(expected = ClassCastException.class)
public void fieldWithIncompatibleTypeBound_saveBean_throws()
throws Throwable {
try {
binder.bind(ageField, "age");
binder.save(item);
} catch (RuntimeException e) {
throw e.getCause();
}
}
@Test
public void fieldWithConverterBound_bindBean_fieldValueUpdated() {
binder.forField(ageField)
.withConverter(Integer::valueOf, String::valueOf).bind("age");
binder.bind(item);
assertEquals("32", ageField.getValue());
}
@Test(expected = ClassCastException.class)
public void fieldWithInvalidConverterBound_bindBean_fieldValueUpdated() {
binder.forField(ageField).withConverter(Float::valueOf, String::valueOf)
.bind("age");
binder.bind(item);
assertEquals("32", ageField.getValue());
}
private void assertInvalid(HasValue<?> field, String message) {
BinderValidationStatus<?> status = binder.validate();
List<ValidationStatus<?>> errors = status.getFieldValidationErrors();
assertEquals(1, errors.size());
assertSame(field, errors.get(0).getField());
assertEquals(message, errors.get(0).getMessage().get());
}
}
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