/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.math.geometry;

import java.text.NumberFormat;
import java.text.ParseException;
import java.text.ParsePosition;
import java.util.Locale;

import junit.framework.TestCase;

import org.apache.commons.math.util.CompositeFormat;

public abstract class Vector3DFormatAbstractTest extends TestCase {

	Vector3DFormat vector3DFormat = null;
	Vector3DFormat vector3DFormatSquare = null;

	protected abstract Locale getLocale();

	protected abstract char getDecimalCharacter();

	@Override
	protected void setUp() throws Exception {
		vector3DFormat = Vector3DFormat.getInstance(getLocale());
		final NumberFormat nf = NumberFormat.getInstance(getLocale());
		nf.setMaximumFractionDigits(2);
		vector3DFormatSquare = new Vector3DFormat("[", "]", " : ", nf);
	}

	public void testSimpleNoDecimals() {
		Vector3D c = new Vector3D(1, 1, 1);
		String expected = "{1; 1; 1}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testSimpleWithDecimals() {
		Vector3D c = new Vector3D(1.23, 1.43, 1.63);
		String expected = "{1" + getDecimalCharacter() + "23; 1" + getDecimalCharacter() + "43; 1"
				+ getDecimalCharacter() + "63}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testSimpleWithDecimalsTrunc() {
		Vector3D c = new Vector3D(1.2323, 1.4343, 1.6333);
		String expected = "{1" + getDecimalCharacter() + "23; 1" + getDecimalCharacter() + "43; 1"
				+ getDecimalCharacter() + "63}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testNegativeX() {
		Vector3D c = new Vector3D(-1.2323, 1.4343, 1.6333);
		String expected = "{-1" + getDecimalCharacter() + "23; 1" + getDecimalCharacter() + "43; 1"
				+ getDecimalCharacter() + "63}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testNegativeY() {
		Vector3D c = new Vector3D(1.2323, -1.4343, 1.6333);
		String expected = "{1" + getDecimalCharacter() + "23; -1" + getDecimalCharacter() + "43; 1"
				+ getDecimalCharacter() + "63}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testNegativeZ() {
		Vector3D c = new Vector3D(1.2323, 1.4343, -1.6333);
		String expected = "{1" + getDecimalCharacter() + "23; 1" + getDecimalCharacter() + "43; -1"
				+ getDecimalCharacter() + "63}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testNonDefaultSetting() {
		Vector3D c = new Vector3D(1, 1, 1);
		String expected = "[1 : 1 : 1]";
		String actual = vector3DFormatSquare.format(c);
		assertEquals(expected, actual);
	}

	public void testStaticFormatVector3D() {
		Locale defaultLocal = Locale.getDefault();
		Locale.setDefault(getLocale());

		Vector3D c = new Vector3D(232.222, -342.33, 432.444);
		String expected = "{232" + getDecimalCharacter() + "22; -342" + getDecimalCharacter() + "33; 432"
				+ getDecimalCharacter() + "44}";
		String actual = Vector3DFormat.formatVector3D(c);
		assertEquals(expected, actual);

		Locale.setDefault(defaultLocal);
	}

	public void testNan() {
		Vector3D c = Vector3D.NaN;
		String expected = "{(NaN); (NaN); (NaN)}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testPositiveInfinity() {
		Vector3D c = Vector3D.POSITIVE_INFINITY;
		String expected = "{(Infinity); (Infinity); (Infinity)}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void tesNegativeInfinity() {
		Vector3D c = Vector3D.NEGATIVE_INFINITY;
		String expected = "{(-Infinity); (-Infinity); (-Infinity)}";
		String actual = vector3DFormat.format(c);
		assertEquals(expected, actual);
	}

	public void testParseSimpleNoDecimals() {
		String source = "{1; 1; 1}";
		Vector3D expected = new Vector3D(1, 1, 1);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseIgnoredWhitespace() {
		Vector3D expected = new Vector3D(1, 1, 1);
		ParsePosition pos1 = new ParsePosition(0);
		String source1 = "{1;1;1}";
		assertEquals(expected, vector3DFormat.parseObject(source1, pos1));
		assertEquals(source1.length(), pos1.getIndex());
		ParsePosition pos2 = new ParsePosition(0);
		String source2 = " { 1 ; 1 ; 1 } ";
		assertEquals(expected, vector3DFormat.parseObject(source2, pos2));
		assertEquals(source2.length() - 1, pos2.getIndex());
	}

	public void testParseSimpleWithDecimals() {
		String source = "{1" + getDecimalCharacter() + "23; 1" + getDecimalCharacter() + "43; 1" + getDecimalCharacter()
				+ "63}";
		Vector3D expected = new Vector3D(1.23, 1.43, 1.63);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseSimpleWithDecimalsTrunc() {
		String source = "{1" + getDecimalCharacter() + "2323; 1" + getDecimalCharacter() + "4343; 1"
				+ getDecimalCharacter() + "6333}";
		Vector3D expected = new Vector3D(1.2323, 1.4343, 1.6333);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseNegativeX() {
		String source = "{-1" + getDecimalCharacter() + "2323; 1" + getDecimalCharacter() + "4343; 1"
				+ getDecimalCharacter() + "6333}";
		Vector3D expected = new Vector3D(-1.2323, 1.4343, 1.6333);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseNegativeY() {
		String source = "{1" + getDecimalCharacter() + "2323; -1" + getDecimalCharacter() + "4343; 1"
				+ getDecimalCharacter() + "6333}";
		Vector3D expected = new Vector3D(1.2323, -1.4343, 1.6333);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseNegativeZ() {
		String source = "{1" + getDecimalCharacter() + "2323; 1" + getDecimalCharacter() + "4343; -1"
				+ getDecimalCharacter() + "6333}";
		Vector3D expected = new Vector3D(1.2323, 1.4343, -1.6333);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseNegativeAll() {
		String source = "{-1" + getDecimalCharacter() + "2323; -1" + getDecimalCharacter() + "4343; -1"
				+ getDecimalCharacter() + "6333}";
		Vector3D expected = new Vector3D(-1.2323, -1.4343, -1.6333);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseZeroX() {
		String source = "{0" + getDecimalCharacter() + "0; -1" + getDecimalCharacter() + "4343; 1"
				+ getDecimalCharacter() + "6333}";
		Vector3D expected = new Vector3D(0.0, -1.4343, 1.6333);
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseNonDefaultSetting() {
		String source = "[1" + getDecimalCharacter() + "2323 : 1" + getDecimalCharacter() + "4343 : 1"
				+ getDecimalCharacter() + "6333]";
		Vector3D expected = new Vector3D(1.2323, 1.4343, 1.6333);
		try {
			Vector3D actual = (Vector3D) vector3DFormatSquare.parseObject(source);
			assertEquals(expected, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseNan() {
		String source = "{(NaN); (NaN); (NaN)}";
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(Vector3D.NaN, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParsePositiveInfinity() {
		String source = "{(Infinity); (Infinity); (Infinity)}";
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(Vector3D.POSITIVE_INFINITY, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testParseNegativeInfinity() {
		String source = "{(-Infinity); (-Infinity); (-Infinity)}";
		try {
			Vector3D actual = (Vector3D) vector3DFormat.parseObject(source);
			assertEquals(Vector3D.NEGATIVE_INFINITY, actual);
		} catch (ParseException ex) {
			fail(ex.getMessage());
		}
	}

	public void testConstructorSingleFormat() {
		NumberFormat nf = NumberFormat.getInstance();
		Vector3DFormat cf = new Vector3DFormat(nf);
		assertNotNull(cf);
		assertEquals(nf, cf.getFormat());
	}

	public void testFormatObject() {
		try {
			CompositeFormat cf = new Vector3DFormat();
			Object object = new Object();
			cf.format(object);
			fail();
		} catch (IllegalArgumentException ex) {
			// success
		}
	}

	public void testForgottenPrefix() {
		ParsePosition pos = new ParsePosition(0);
		assertNull(new Vector3DFormat().parse("1; 1; 1}", pos));
		assertEquals(0, pos.getErrorIndex());
	}

	public void testForgottenSeparator() {
		ParsePosition pos = new ParsePosition(0);
		assertNull(new Vector3DFormat().parse("{1; 1 1}", pos));
		assertEquals(6, pos.getErrorIndex());
	}

	public void testForgottenSuffix() {
		ParsePosition pos = new ParsePosition(0);
		assertNull(new Vector3DFormat().parse("{1; 1; 1 ", pos));
		assertEquals(8, pos.getErrorIndex());
	}

}
