BlankConstraintTests.java

package org.grails.validation;

import grails.validation.AbstractConstraintTests;
import grails.validation.ConstrainedProperty;
import grails.validation.TestClass;

/**
 * Tests for 'blank' constraint.
 *
 * @author Sergey Nebolsin (<a href="mailto:nebolsin@gmail.com"/>)
 */
public class BlankConstraintTests extends AbstractConstraintTests {
    @Override
    protected Class<?> getConstraintClass() {
        return BlankConstraint.class;
    }

    public void testValidate() {
        testConstraintMessageCodes(
                getConstraint("testString", Boolean.FALSE),
                "",
                new String[] {"testClass.testString.blank.error","testClass.testString.blank"},
                new Object[] {"testString", TestClass.class });

        testConstraintPassed(
                getConstraint("testString", Boolean.FALSE),
                "someData");

        testConstraintPassed(
                getConstraint("testString", Boolean.TRUE),
                "someData");

        testConstraintFailedAndVetoed(
                getConstraint("testString", Boolean.FALSE),
                "");

        testConstraintFailed(
                getConstraint("testString", Boolean.FALSE),
                "    ");

        testConstraintDefaultMessage(
                getConstraint("testString", Boolean.FALSE),
                "",
                "Property [{0}] of class [{1}] cannot be blank");
    }

    public void testConstraintCreation() {
        BlankConstraint constraint = new BlankConstraint();
        assertEquals(ConstrainedProperty.BLANK_CONSTRAINT, constraint.getName());
        assertTrue(constraint.supports(String.class));
        assertFalse(constraint.supports(null));
        assertFalse(constraint.supports(Long.class));
        constraint = (BlankConstraint) getConstraint("testString", Boolean.TRUE);
        assertEquals(Boolean.TRUE, constraint.getParameter());

        try {
            getConstraint("testString", "wrong");
            fail("BlankConstraint must throw an exception for non-boolean parameters.");
        } catch (IllegalArgumentException iae) {
            // Great
        }
    }
}