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 * SciJava Common shared library for SciJava software.
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package org.scijava.command;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;

import java.util.Arrays;
import java.util.Iterator;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.scijava.Context;
import org.scijava.command.CommandInfoTest.CommandWithEnumParam.Choice;
import org.scijava.log.LogService;
import org.scijava.module.ModuleItem;
import org.scijava.plugin.Parameter;

/**
 * Tests {@link CommandInfo}.
 * 
 * @author Curtis Rueden
 */
public class CommandInfoTest {

	private Context ctx;
	private CommandService commandService;

	@Before
	public void setUp() {
		ctx = new Context(CommandService.class);
		commandService = ctx.getService(CommandService.class);
	}

	@After
	public void tearDown() {
		ctx.dispose();
	}

	@Test
	public void testEnumParam() {
		final CommandInfo info = commandService.getCommand(
			CommandWithEnumParam.class);
		assertNotNull(info);

		final Iterator<ModuleItem<?>> iter = info.inputs().iterator();
		assertTrue(iter.hasNext());
		ModuleItem<?> freeform = iter.next();
		assertTrue(iter.hasNext());
		ModuleItem<?> constrained = iter.next();
		assertTrue(iter.hasNext());
		ModuleItem<?> choice = iter.next();
		assertFalse(iter.hasNext());

		assertSame(String.class, freeform.getType());
		assertNull(freeform.getChoices());

		assertSame(String.class, constrained.getType());
		assertEquals(Arrays.asList("foo", "bar", "fubar"), //
			constrained.getChoices());

		assertSame(Choice.class, choice.getType());
		assertEquals(Arrays.asList(Choice.YES, Choice.NO, Choice.MAYBE_SO), //
			choice.getChoices());
	}

	@Test
	public void testDuplicateServiceParameters() {
		CommandInfo commandInfo = new CommandInfo(ExtendedServiceCommand.class);
		assertTrue(commandInfo.isValid());
	}

	// -- Helper classes --

	/** A command with an enum parameter. */
	@org.scijava.plugin.Plugin(type = Command.class)
	public static class CommandWithEnumParam implements Command {

		public enum Choice {
				YES, NO, MAYBE_SO
		}

		@Parameter
		private String freeform;

		@Parameter(choices = {"foo", "bar", "fubar"})
		private String constrained;

		@Parameter
		private Choice choice;

		@Override
		public void run() {
			// NB: No implementation needed.
		}
	}

	private static class ServiceCommand implements Command {

		@Parameter
		private LogService logService;

		@Override
		public void run() {
			// do nothing
		}
	}

	private static class ExtendedServiceCommand extends ServiceCommand {

		@Parameter
		private LogService logService;

		@Override
		public void run() {
			// do nothing
		}
	}
}
