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package org.scijava.log;

import org.junit.Assert;
import org.junit.Test;

import java.util.ArrayList;
import java.util.Collections;

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

/**
 * Tests {@link LogMessage}.
 * 
 * @author Matthias Arzt
 */
public class LogMessageTest {

	/** Tests {@link LogMessage#toString()}. */
	@Test
	public void testToString() {
		String nameOfThisMethod = "testToString";
		// setup
		LogMessage message = new LogMessage(LogSource.newRoot(), LogLevel.DEBUG, 42, new NullPointerException());
		// process
		String s = message.toString();
		//test
		Assert.assertTrue("Log message contains level", s.contains(LogLevel.prefix(message.level())));
		Assert.assertTrue("Log message contains msg", s.contains(message.text()));
		Assert.assertTrue("Log message contains throwable", s.contains(message.throwable().toString()));
		Assert.assertTrue("Log message contains stack trace", s.contains(nameOfThisMethod));
	}

	@Test
	public void testToStringOptionalParameters() {
		// setup
		LogMessage message = new LogMessage(LogSource.newRoot(), LogLevel.WARN, null, null);

		// process
		// Can it still format the message if optional parameters are null?
		String s = message.toString();

		// test
		Assert.assertTrue("Log message contains level", s.contains(LogLevel.prefix(message.level())));
	}

	@Test
	public void testAttachments() {
		LogMessage message = new LogMessage(LogSource.newRoot(), LogLevel.ERROR, "Message")	;
		assertTrue(message.attachments().isEmpty());
		Object object = new Object();
		message.attach(object);
		assertEquals(Collections.singletonList(object), new ArrayList<>(message.attachments()));
	}
}
