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 * Institute of Molecular Cell Biology and Genetics.
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package org.scijava.module.process;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.util.concurrent.ExecutionException;

import org.junit.Test;
import org.scijava.Context;
import org.scijava.command.Command;
import org.scijava.command.CommandService;
import org.scijava.log.DefaultLogger;
import org.scijava.log.LogLevel;
import org.scijava.log.LogService;
import org.scijava.log.LogSource;
import org.scijava.log.Logger;
import org.scijava.log.TestLogListener;
import org.scijava.plugin.Parameter;

/**
 * Tests {@link LoggerPreprocessor}.
 *
 * @author Matthias Arzt
 */
public class LoggerPreprocessorTest {

	@Test
	public void testInjection() throws InterruptedException, ExecutionException {
		final Context context = new Context(CommandService.class);
		final CommandService commandService = context.service(CommandService.class);
		final TestLogListener listener = new TestLogListener();
		context.service(LogService.class).addLogListener(listener);

		commandService.run(CommandWithLogger.class, true).get();
		assertTrue(listener.hasLogged(m -> m.source().path().contains(CommandWithLogger.class.getSimpleName())));
	}

	/** Tests redirection of a command's log output. */
	@Test
	public void testCustomLogger() throws ExecutionException,
		InterruptedException
	{
		// setup
		final Context context = new Context(CommandService.class);
		final CommandService commandService = context.service(CommandService.class);
		final TestLogListener listener = new TestLogListener();
		final LogSource source = LogSource.newRoot();
		final DefaultLogger customLogger = new DefaultLogger(listener, source,
			LogLevel.TRACE);
		// process
		commandService.run(CommandWithLogger.class, true, "log", customLogger)
			.get();
		// test
		assertTrue(listener.hasLogged(m -> m.source().equals(source)));
	}

	public static class CommandWithLogger implements Command {

		@Parameter
		public Logger log;

		@Override
		public void run() {
			log.info("log from the command.");
		}
	}

	@Test
	public void testLoggerNameByAnnotation() throws ExecutionException, InterruptedException {
		final Context context = new Context(CommandService.class);
		final CommandService commandService = context.service(CommandService.class);
		commandService.run(CommandWithNamedLogger.class, true).get();
	}

	public static class CommandWithNamedLogger implements Command {

		@Parameter(label = "MyLoggerName")
		public Logger log;

		@Override
		public void run() {
			assertEquals("MyLoggerName", log.getName());
		}
	}
}
