ExampleValidationTest.java

package de.galan.verjson.examples.validation;

import static org.assertj.core.api.Assertions.*;

import org.junit.Before;
import org.junit.Test;

import de.galan.commons.test.AbstractTestParent;
import de.galan.verjson.core.Verjson;
import de.galan.verjson.test.TestBean;
import de.galan.verjson.util.ReadException;


/**
 * This example test shows how to use validators. We have two versions and two different JSON schemas. The
 * transformation itself does not have structural changes but semantical - the now required content-field will get
 * default content if empty.
 *
 * @author daniel
 */
public class ExampleValidationTest extends AbstractTestParent {

	private Verjson<TestBean> verjson;


	@Before
	public void before() {
		verjson = Verjson.create(TestBean.class, new ExampleValidationVersions());
	}


	@Test
	public void version1WithContent() throws Exception {
		// {"$v":1,"$d":{"content":"abc","number":123}}
		TestBean read = verjson.read("{\"$v\":1,\"$d\":{\"content\":\"abc\",\"number\":123}}");
		assertThat(read.content).isEqualTo("abc");
	}


	@Test
	public void version1Without() throws Exception {
		// {"$v":1,"$d":{"number":123}}
		TestBean read = verjson.read("{\"$v\":1,\"$d\":{\"number\":123}}");
		assertThat(read.content).isEqualTo("default");
	}


	@Test
	public void version2Valid() throws Exception {
		TestBean bean = new TestBean().content("abc").number(123L);
		String written = verjson.write(bean);
		// {"$v":2,"$d":{"content":"abc","number":123}}
		TestBean read = verjson.read(written);
		assertThat(read).isEqualTo(bean);
	}


	@Test
	public void version2Invalid() throws Exception {
		TestBean bean = new TestBean().number(123L); // No content-field, but required in schema
		try {
			String written = verjson.write(bean);
			// {"$v":2,"$d":{"number":123}}
			verjson.read(written);
		}
		catch (ReadException ex) {
			assertThat(ex.getMessage()).isEqualTo("Could not validate JSON against schema:\n- object has missing required properties ([\"content\"])");
		}
	}

}