/**
 * AnalyzerBeans
 * Copyright (C) 2014 Neopost - Customer Information Management
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.eobjects.analyzer.beans.api;

import junit.framework.TestCase;

public class OutputColumnsTest extends TestCase {

	public void testTooFewColumnsInt() throws Exception {
		try {
			new OutputColumns(0);
			fail("Exception expected");
		} catch (IllegalArgumentException e) {
			assertEquals("columns must be 1 or higher", e.getMessage());
		}
	}

	public void testSingleOutputColumn() throws Exception {
		OutputColumns oc = OutputColumns.singleOutputColumn();
		assertEquals(1, oc.getColumnCount());
		assertNull(oc.getColumnName(0));
		assertNull(oc.getColumnType(0));
		assertEquals("OutputColumns[null]", oc.toString());
	}

	public void testNullColumns() throws Exception {
		try {
			new OutputColumns(null);
			fail("Exception expected");
		} catch (IllegalArgumentException e) {
			assertEquals("Arguments cannot be null", e.getMessage());
		}
	}

	public void testTooFewColumnsStringArray() throws Exception {
		try {
			new OutputColumns(new String[0]);
			fail("Exception expected");
		} catch (IllegalArgumentException e) {
			assertEquals("Column names length must be 1 or greater", e.getMessage());
		}
	}

	public void testConstructWithTypes() throws Exception {
		OutputColumns oc = new OutputColumns(new String[] { "foo", "bar" }, new Class[] { String.class, Number.class });
		assertEquals(2, oc.getColumnCount());
		assertEquals("foo", oc.getColumnName(0));
		assertEquals("bar", oc.getColumnName(1));
		assertEquals(String.class, oc.getColumnType(0));
		assertEquals(Number.class, oc.getColumnType(1));

		assertEquals("OutputColumns[foo, bar]", oc.toString());
	}

	public void testConstructVarArgNames() throws Exception {
		OutputColumns oc = new OutputColumns("first", "second", "third");
		assertEquals(3, oc.getColumnCount());
		assertEquals("first", oc.getColumnName(0));
		assertEquals("second", oc.getColumnName(1));
		assertEquals("third", oc.getColumnName(2));
		assertNull(oc.getColumnType(0));
		assertNull(oc.getColumnType(1));
		assertNull(oc.getColumnType(2));
	}

	public void testConstructNullTypes() throws Exception {
		OutputColumns oc = new OutputColumns(new String[] { "foo", "bar" }, null);
		assertEquals(2, oc.getColumnCount());
		assertEquals("foo", oc.getColumnName(0));
		assertEquals("bar", oc.getColumnName(1));
		assertNull(oc.getColumnType(0));
		assertNull(oc.getColumnType(1));
	}

	public void testConstructUnequalLength() throws Exception {
		try {
			new OutputColumns(new String[] { "foo", "bar" }, new Class[] { String.class });
			fail("Exception expected");
		} catch (Exception e) {
			assertEquals("Column names and column types must have equal length", e.getMessage());
		}
	}

	public void testSetColumnType() throws Exception {
		OutputColumns oc = new OutputColumns("first", "second", "third");
		oc.setColumnType(1, String.class);
		assertNull(oc.getColumnType(0));
		assertEquals(String.class, oc.getColumnType(1));
		assertNull(oc.getColumnType(2));
	}

	public void testSetColumnName() throws Exception {
		OutputColumns oc = OutputColumns.singleOutputColumn();
		oc.setColumnName(0, "foo");
		assertEquals("foo", oc.getColumnName(0));
	}
}