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* to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.di.spi;
import org.apache.cayenne.di.Binder;
import org.apache.cayenne.di.DIRuntimeException;
import org.apache.cayenne.di.Module;
import org.apache.cayenne.di.mock.MockImplementation1_DepOn2;
import org.apache.cayenne.di.mock.MockImplementation1_DepOn2Constructor;
import org.apache.cayenne.di.mock.MockImplementation1_DepOn2Provider;
import org.apache.cayenne.di.mock.MockImplementation2;
import org.apache.cayenne.di.mock.MockImplementation2_Constructor;
import org.apache.cayenne.di.mock.MockImplementation2_I3Dependency;
import org.apache.cayenne.di.mock.MockImplementation3;
import org.apache.cayenne.di.mock.MockInterface1;
import org.apache.cayenne.di.mock.MockInterface2;
import org.apache.cayenne.di.mock.MockInterface3;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class DefaultInjectorCircularInjectionTest {
@Test
public void testFieldInjection_CircularDependency() {
Module module = new Module() {
public void configure(Binder binder) {
binder.bind(MockInterface1.class).to(MockImplementation1_DepOn2.class);
binder.bind(MockInterface2.class).to(MockImplementation2.class);
}
};
DefaultInjector injector = new DefaultInjector(module);
try {
injector.getInstance(MockInterface1.class);
fail("Circular dependency is not detected.");
}
catch (DIRuntimeException e) {
// expected
}
catch (StackOverflowError e) {
fail("Circular dependency is not detected, causing stack overflow");
}
}
@Test
public void testProviderInjection_CircularDependency() {
Module module = new Module() {
public void configure(Binder binder) {
binder.bind(MockInterface1.class).to(
MockImplementation1_DepOn2Provider.class);
binder.bind(MockInterface2.class).to(MockImplementation2.class);
}
};
DefaultInjector injector = new DefaultInjector(module);
MockInterface1 service = injector.getInstance(MockInterface1.class);
assertEquals("MockImplementation2Name", service.getName());
}
@Test
public void testConstructorInjection_CircularDependency() {
Module module = new Module() {
public void configure(Binder binder) {
binder.bind(MockInterface1.class).to(
MockImplementation1_DepOn2Constructor.class);
binder.bind(MockInterface2.class).to(
MockImplementation2_Constructor.class);
}
};
DefaultInjector injector = new DefaultInjector(module);
try {
injector.getInstance(MockInterface1.class);
fail("Circular dependency is not detected.");
}
catch (DIRuntimeException e) {
// expected
}
catch (StackOverflowError e) {
fail("Circular dependency is not detected, causing stack overflow");
}
}
@Test
public void testConstructorInjection_WithFieldInjectionDeps() {
Module module = new Module() {
public void configure(Binder binder) {
binder.bind(MockInterface1.class).to(
MockImplementation1_DepOn2Constructor.class);
binder.bind(MockInterface2.class).to(
MockImplementation2_I3Dependency.class);
binder.bind(MockInterface3.class).to(MockImplementation3.class);
}
};
DefaultInjector injector = new DefaultInjector(module);
try {
injector.getInstance(MockInterface1.class);
}
catch (DIRuntimeException e) {
fail("Circular dependency is detected incorrectly: " + e.getMessage());
}
}
}