ValidNumberCommandTest.java

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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.assertTrue;

import java.util.List;

import org.junit.Before;
import org.junit.Test;
import org.scijava.Context;
import org.scijava.ItemIO;
import org.scijava.ValidityProblem;
import org.scijava.plugin.Parameter;
import org.scijava.plugin.Plugin;

/**
 * Test commands for verifying that invalid module parameters are dealt with
 * using proper error handling.
 * 
 * @author Curtis Rueden
 */
public class ValidNumberCommandTest {

	private CommandService commandService;

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

	@Test
	public void testValid() {
		final CommandInfo info = commandService.getCommand(ValidCommand.class);
		assertNotNull(info);
		assertTrue(info.isValid());

		final List<ValidityProblem> problems = info.getProblems();
		assertNotNull(problems);
		assertEquals(0, problems.size());
		
		final Number stepSize = info.getInput("x").getStepSize();
		final String format = info.getInput("x").getFormat();
		assertNotNull(stepSize);
		assertEquals(10, stepSize.intValue());
		assertEquals("0.000000", format);
	}


	// -- Helper classes --

	/** A perfectly valid command! */
	@Plugin(type = Command.class)
	public static class ValidCommand implements Command {

		@Parameter(stepSize = "10", format = "0.000000")
		private double x;

		@Parameter(type = ItemIO.OUTPUT)
		private String validOutput;

		@Override
		public void run() {
			validOutput = "ValidCommand: success!";
		}

	}


}