|
| 1 | +package fj.data; |
| 2 | + |
| 3 | +import fj.F; |
| 4 | +import fj.function.Booleans; |
| 5 | +import fj.test.Property; |
| 6 | +import org.junit.Assert; |
| 7 | +import org.junit.Test; |
| 8 | + |
| 9 | +import static fj.P1.curry; |
| 10 | +import static fj.data.List.list; |
| 11 | +import static fj.function.Booleans.isnot; |
| 12 | +import static org.hamcrest.core.Is.is; |
| 13 | + |
| 14 | +/** |
| 15 | + * Created by amar on 28/01/15. |
| 16 | + */ |
| 17 | +public class BooleansTest { |
| 18 | + |
| 19 | + @Test |
| 20 | + public void testAnd(){ |
| 21 | + F<String, Boolean> f1 = a -> a.startsWith("fj"); |
| 22 | + F<String, Boolean> f2 = a -> a.contains("data"); |
| 23 | + |
| 24 | + F<String, Boolean> f3 = Booleans.and(f1, f2); |
| 25 | + |
| 26 | + Assert.assertTrue(f3.f("fj.data")); |
| 27 | + Assert.assertTrue(f3.f("fj.data.Function")); |
| 28 | + |
| 29 | + } |
| 30 | + |
| 31 | + @Test |
| 32 | + public void testOr(){ |
| 33 | + F<String, Boolean> f1 = a -> a.startsWith("fj"); |
| 34 | + F<String, Boolean> f2 = a -> a.startsWith("someOtherPackage"); |
| 35 | + |
| 36 | + F<String, Boolean> f3 = Booleans.or(f1, f2); |
| 37 | + |
| 38 | + Assert.assertTrue(f3.f("fj.data")); |
| 39 | + Assert.assertTrue(f3.f("someOtherPackage.fj.data")); |
| 40 | + Assert.assertFalse(f3.f("something.fj.data.Function")); |
| 41 | + |
| 42 | + } |
| 43 | + |
| 44 | + @Test |
| 45 | + public void testComap(){ |
| 46 | + F<String, Boolean> f1 = a -> a.length() > 3; |
| 47 | + F<Integer, String> f2 = a -> a.toString(); |
| 48 | + |
| 49 | + F<Integer, Boolean> f3 = Booleans.contramap(f2, f1); |
| 50 | + |
| 51 | + Assert.assertTrue(f3.f(1000)); |
| 52 | + Assert.assertFalse(f3.f(100)); |
| 53 | + |
| 54 | + } |
| 55 | + |
| 56 | + @SuppressWarnings("unchecked") |
| 57 | + @Test |
| 58 | + public void testAndAll(){ |
| 59 | + F<String, Boolean> f1 = a -> a.endsWith("fj"); |
| 60 | + F<String, Boolean> f2 = a -> a.startsWith("someOtherPackage"); |
| 61 | + F<String, Boolean> f3 = a -> a.length() < 20; |
| 62 | + |
| 63 | + F<String, Boolean> f4 = Booleans.andAll(Stream.<F<String, Boolean>>stream(f1, f2, f3)); |
| 64 | + |
| 65 | + Assert.assertTrue(f4.f("someOtherPackage.fj")); |
| 66 | + Assert.assertFalse(f4.f("otther")); |
| 67 | + Assert.assertFalse(f4.f("someOtherPackage.fj.data.something.really.big")); |
| 68 | + |
| 69 | + } |
| 70 | + |
| 71 | + @SuppressWarnings("unchecked") |
| 72 | + @Test |
| 73 | + public void testIsNot(){ |
| 74 | + F<Integer, Boolean> f1 = a -> a == 4; |
| 75 | + List<String> result = list("some", "come", "done!").filter(isnot(String::length, f1)); |
| 76 | + |
| 77 | + Assert.assertThat(result.length(), is(1)); |
| 78 | + Assert.assertEquals(result, list("done!")); |
| 79 | + |
| 80 | + } |
| 81 | +} |
0 commit comments