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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.component.provider.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.lang.reflect.Constructor;
import java.util.HashMap;
import java.util.Map;
import com.yahoo.component.AbstractComponent;
import org.junit.Test;
import com.yahoo.component.ComponentId;
import com.yahoo.component.Version;
import com.yahoo.component.provider.ComponentClass;
import com.yahoo.config.ConfigInstance;
import com.yahoo.config.core.IntConfig;
import com.yahoo.config.core.StringConfig;
import com.yahoo.vespa.config.ConfigKey;
/**
* @author <a href="gv@yahoo-inc.com">G. Voldengen</a>
*/
@SuppressWarnings("unused")
public class ComponentClassTestCase {
@Test
public void testComponentConstructor() throws NoSuchMethodException {
ComponentClass<A> a = new ComponentClass<>(A.class);
assertEquals(A.preferred(), a.getPreferredConstructor().getConstructor());
ComponentClass<B> b = new ComponentClass<>(B.class);
assertEquals(B.preferred(), b.getPreferredConstructor().getConstructor());
ComponentClass<C> c = new ComponentClass<>(C.class);
assertEquals(C.preferred(), c.getPreferredConstructor().getConstructor());
ComponentClass<E> e = new ComponentClass<>(E.class);
assertEquals(E.preferred(), e.getPreferredConstructor().getConstructor());
ComponentClass<G> g = new ComponentClass<>(G.class);
assertEquals(G.preferred(), g.getPreferredConstructor().getConstructor());
try {
ComponentClass<H> h = new ComponentClass<>(H.class);
fail("Expected exception due to no legal public constructors.");
} catch (IllegalArgumentException expected) {
assertTrue(expected.getMessage().contains("must have at least one public constructor with an optional " +
"component ID followed by an optional FileAcquirer and zero or more config arguments"));
}
try {
ComponentClass<I> i = new ComponentClass<>(I.class);
fail("Expected exception due to no public constructors.");
} catch (RuntimeException expected) {
assertTrue(expected.getMessage().contains("Class has no public constructors"));
}
try {
ComponentClass<J> j = new ComponentClass<>(J.class);
fail("Expected exception due to no public constructors.");
} catch (RuntimeException expected) {
assertTrue(expected.getMessage().contains("Class has no public constructors"));
}
ComponentClass<K> k = new ComponentClass<>(K.class);
assertEquals(K.preferred(), k.getPreferredConstructor().getConstructor());
ComponentClass<L> l = new ComponentClass<>(L.class);
assertEquals(L.preferred(), l.getPreferredConstructor().getConstructor());
}
@SuppressWarnings("unchecked")
@Test
public void testCreateComponent() throws NoSuchMethodException {
Map<ConfigKey, ConfigInstance> availableConfigs = new HashMap<>();
String configId = "testConfigId";
availableConfigs.put(new ConfigKey(StringConfig.class, configId), new StringConfig(new StringConfig.Builder()));
availableConfigs.put(new ConfigKey(IntConfig.class, configId), new IntConfig(new IntConfig.Builder()));
ComponentClass<TestComponent> testClass = new ComponentClass<>(TestComponent.class);
TestComponent component = testClass.
createComponent(new ComponentId("test", new Version(1)), availableConfigs, configId);
assertEquals("test", component.getId().getName());
assertEquals(1, component.getId().getVersion().getMajor());
assertEquals(1, component.intVal);
assertEquals("_default_", component.stringVal);
}
/**
* Verifies that ComponentClass sets the ComponentId when a component that takes a ComponentId as
* constructor argument fails to call super(id).
*/
@Test
public void testNullIdComponent() throws NoSuchMethodException {
ComponentClass<NullIdComponent> testClass = new ComponentClass<>(NullIdComponent.class);
NullIdComponent component = testClass.createComponent(new ComponentId("null-test", new Version(1)), new HashMap<ConfigKey, ConfigInstance>(), null);
assertEquals("null-test", component.getId().getName());
assertEquals(1, component.getId().getVersion().getMajor());
}
public static class TestComponent extends AbstractComponent {
private int intVal = 0;
private String stringVal = "";
public TestComponent(ComponentId id, IntConfig intConfig, StringConfig stringConfig) {
super(id);
intVal = intConfig.intVal();
stringVal = stringConfig.stringVal();
}
}
/**
* This component takes a ComponentId as constructor arg, but "forgets" to call super(id).
*/
public static class NullIdComponent extends AbstractComponent {
private int intVal = 0;
private String stringVal = "";
public NullIdComponent(ComponentId id) {
}
}
private static class A extends AbstractComponent {
public A(IntConfig intConfig) { }
public A(IntConfig intConfig, StringConfig stringConfig) { }
static Constructor<A> preferred() throws NoSuchMethodException{
return A.class.getConstructor(IntConfig.class, StringConfig.class);
}
}
private static class B extends AbstractComponent {
public B(ComponentId id, IntConfig intConfig) { }
public B(IntConfig intConfig) { }
static Constructor<B> preferred() throws NoSuchMethodException{
return B.class.getConstructor(ComponentId.class, IntConfig.class);
}
}
private static class C extends AbstractComponent {
public C(IntConfig intConfig, ComponentId id) { }
public C(String id, IntConfig intConfig) { }
static Constructor<C> preferred() throws NoSuchMethodException{
return C.class.getConstructor(IntConfig.class, ComponentId.class);
}
}
private static class E extends AbstractComponent {
public E(IntConfig intConfig) { }
public E(String id, String illegal, IntConfig intConfig, StringConfig stringConfig) { }
static Constructor<E> preferred() throws NoSuchMethodException{
return E.class.getConstructor(IntConfig.class);
}
}
private static class G extends AbstractComponent {
public G(ComponentId id) { }
public G(String id) { }
static Constructor<G> preferred() throws NoSuchMethodException{
return G.class.getConstructor(ComponentId.class);
}
}
private static class H extends AbstractComponent {
public H(ComponentId id, String illegal) { }
public H(String id, String illegal) { }
}
private static class I extends AbstractComponent {
protected I(ComponentId id) { }
}
private static class J extends AbstractComponent {
}
private static class K extends AbstractComponent {
public K() { }
public K(ComponentId id, String illegal) { }
static Constructor<K> preferred() throws NoSuchMethodException{
return K.class.getConstructor();
}
}
private static class L extends AbstractComponent {
public L(long l, long ll, long lll) { }
public L(ComponentId id, IntConfig intConfig) { }
static Constructor<L> preferred() throws NoSuchMethodException{
return L.class.getConstructor(ComponentId.class, IntConfig.class);
}
}
}
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