package com.google.common.base;

import static org.junit.Assert.*;

import org.junit.Test;

public class TestCharMatcher {
	
	@Test
	public void anyOfTest() {
		CharMatcher matcher = CharMatcher.anyOf("abc");
		assertTrue(matcher.matches('a'));
		assertTrue(matcher.matches('b'));
		assertTrue(matcher.matches('c'));
		assertFalse(matcher.matches('x'));
		assertTrue(matcher.matchesAnyOf("abxcd"));
	}
	
	@Test
	public void forPredicateTest() {
		Predicate<Character> predicate = new Predicate<Character>() {

			@Override
			public boolean apply(Character input) {
				return Character.isLetter(input);
			}
		};
		CharMatcher matcher = CharMatcher.forPredicate(predicate);
		assertTrue(matcher.matches('a'));
		assertTrue(matcher.matches('b'));
		assertTrue(matcher.matches('c'));
		assertFalse(matcher.matches('1'));
	}
	
	@Test
	public void inRangeTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		assertTrue(matcher.matches('A'));
		assertTrue(matcher.matches('B'));
		assertTrue(matcher.matches('E'));
		assertFalse(matcher.matches('F'));
		assertFalse(matcher.matches('a'));
	}
	
	@Test
	public void noneOfTest() {
		CharMatcher matcher = CharMatcher.noneOf("abg");
		assertTrue(matcher.matches('x'));
		assertTrue(matcher.matches('y'));
		assertFalse(matcher.matches('g'));
		assertFalse(matcher.matches('a'));
		assertFalse(matcher.matches('b'));
	}
	
	@Test
	public void andTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		matcher = matcher.and(CharMatcher.anyOf("ABD"));
		assertTrue(matcher.matches('A'));
		assertTrue(matcher.matches('B'));
		assertFalse(matcher.matches('E'));
		assertFalse(matcher.matches('a'));
	}
	
	@Test
	public void collapseFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.collapseFrom("helloABEworld", '-');
		assertEquals("hello-world", result);
	}
	
	@Test
	public void countInTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		int result = matcher.countIn("ABer Hallo");
		assertEquals(2, result);
	}
	
	@Test
	public void removeFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.removeFrom("helloABCDEworld");
		assertEquals("helloworld", result);
	}
	
	@Test
	public void retainFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.retainFrom("ABER HALLO");
		assertEquals("ABEA", result);
	}
	
	@Test
	public void replaceFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.replaceFrom("ABER HALLO", 'O');
		assertEquals("OOOR HOLLO", result);
	}
	
	@Test
	public void trimFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.trimFrom("ABER HALLOE");
		assertEquals("R HALLO", result);
	}
	
	@Test
	public void trimLeadingFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.trimLeadingFrom("ABER HALLOE");
		assertEquals("R HALLOE", result);
	}
	
	@Test
	public void trimTrailingFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.trimTrailingFrom("ABER HALLOE");
		assertEquals("ABER HALLO", result);
	}
	
	@Test
	public void trimAndCollapseFromTest() {
		CharMatcher matcher = CharMatcher.inRange('A', 'E');
		String result = matcher.trimAndCollapseFrom("ABERHALLOABERWAS", '-');
		System.out.println(result);
		assertEquals("RH-LLO-RW-S", result);
	}
}