1 package io.github.reggert.reb4j.charclass;
2
3 import static org.hamcrest.CoreMatchers.is;
4 import static org.junit.Assert.assertThat;
5
6 import io.github.reggert.reb4j.Entity;
7 import io.github.reggert.reb4j.Expression;
8 import io.github.reggert.reb4j.charclass.CharClass;
9
10 import java.util.HashSet;
11
12
13 import org.junit.Test;
14
15
16 public class NamedPredefinedClassTest
17 {
18
19 @Test
20 public void testHashCodeAndEquals()
21 {
22 final HashSet<Expression> set = new HashSet<Expression>();
23 set.add(CharClass.Posix.ALPHA);
24 set.add(CharClass.Posix.ALPHA.negated().negated());
25 set.add(CharClass.Posix.BLANK);
26 assertThat(set.size(), is(2));
27 assertThat(set.contains(CharClass.Posix.ALPHA), is(true));
28 assertThat(set.contains(CharClass.Posix.CONTROL), is(false));
29 assertThat(CharClass.Posix.ALPHA.equals(CharClass.Posix.ALPHA), is(true));
30 assertThat(CharClass.Posix.ALPHA.equals(CharClass.Posix.ALPHA.negated().negated()), is(true));
31 assertThat(CharClass.Posix.ALPHA.equals(CharClass.Posix.BLANK), is(false));
32 assertThat(CharClass.Posix.ALPHA.equals(Entity.ANY_CHAR), is(false));
33 assertThat(CharClass.Posix.ALPHA.equals(null), is(false));
34 }
35
36 }