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jbgi merged 1 commit into from
Aug 20, 2018
Merged

Add Visitor tests #354

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80 changes: 80 additions & 0 deletions core/src/test/java/fj/function/VisitorTest.java
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Original file line number Diff line number Diff line change
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package fj.function;

import fj.Equal;
import fj.F;
import fj.P;
import fj.P1;
import fj.data.List;
import org.junit.Test;

import static fj.data.Option.none;
import static fj.data.Option.some;
import static fj.function.Visitor.*;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;

public class VisitorTest {
@Test
public void testFindFirst() {
assertThat(findFirst(List.list(none(), some(1), none()), () -> -1), is(1));
}

@Test
public void testFindFirstDef() {
assertThat(findFirst(List.list(none(), none(), none()), () -> -1), is(-1));
}

@Test
public void testNullableFindFirst() {
assertThat(nullablefindFirst(List.list(null, 1, null), () -> -1), is(1));
}

@Test
public void testNullableFindFirstDef() {
assertThat(nullablefindFirst(List.list(null, null, null), () -> -1), is(-1));
}

@Test
public void testVisitor() {
assertThat(visitor(List.list(i -> some(2 * i)), () -> -1, 10), is(20));
}

@Test
public void testVisitorDef() {
assertThat(visitor(List.list(i -> none()), () -> "foo", 10), is("foo"));
}

@Test
public void testNullableVisitor() {
assertThat(nullableVisitor(List.list(i -> 2 * i), () -> -1, 10), is(20));
}

@Test
public void testNullableVisitorDef() {
assertThat(nullableVisitor(List.list(i -> null), () -> "foo", 10), is("foo"));
}

@Test
public void testAssociation() {
final F<String, F<Integer, String>> a = association(List.list(P.p(1, "one"), P.p(2, "two")), Equal.intEqual);
assertThat(a.f("foo").f(2), is("two"));
}

@Test
public void testAssociationDef() {
final F<String, F<Integer, String>> a = association(List.list(P.p(1, "one"), P.p(2, "two")), Equal.intEqual);
assertThat(a.f("foo").f(3), is("foo"));
}

@Test
public void testAssociationLazy() {
final F<P1<String>, F<Integer, String>> a = associationLazy(List.list(P.p(1, "one"), P.p(2, "two")), Equal.intEqual);
assertThat(a.f(P.p("foo")).f(2), is("two"));
}

@Test
public void testAssociationLazyDef() {
final F<P1<String>, F<Integer, String>> a = associationLazy(List.list(P.p(1, "one"), P.p(2, "two")), Equal.intEqual);
assertThat(a.f(P.p("foo")).f(3), is("foo"));
}
}