/**
* Copyright (c) 2016-present, RxJava Contributors.
*
* Licensed 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 io.reactivex.internal.functions;
import static org.junit.Assert.*;
import java.lang.reflect.Method;
import java.util.List;
import org.junit.Test;
import io.reactivex.TestHelper;
import io.reactivex.exceptions.TestException;
import io.reactivex.functions.*;
import io.reactivex.internal.functions.Functions.*;
import io.reactivex.internal.util.ExceptionHelper;
import io.reactivex.plugins.RxJavaPlugins;
public class FunctionsTest {
@Test
public void utilityClass() {
TestHelper.checkUtilityClass(Functions.class);
}
@SuppressWarnings("unchecked")
@Test
public void hashSetCallableEnum() {
// inlined TestHelper.checkEnum due to access restrictions
try {
Method m = Functions.HashSetCallable.class.getMethod("values");
m.setAccessible(true);
Method e = Functions.HashSetCallable.class.getMethod("valueOf", String.class);
m.setAccessible(true);
for (Enum<HashSetCallable> o : (Enum<HashSetCallable>[])m.invoke(null)) {
assertSame(o, e.invoke(null, o.name()));
}
} catch (Throwable ex) {
throw ExceptionHelper.wrapOrThrow(ex);
}
}
@SuppressWarnings("unchecked")
@Test
public void naturalComparatorEnum() {
// inlined TestHelper.checkEnum due to access restrictions
try {
Method m = Functions.NaturalComparator.class.getMethod("values");
m.setAccessible(true);
Method e = Functions.NaturalComparator.class.getMethod("valueOf", String.class);
m.setAccessible(true);
for (Enum<NaturalComparator> o : (Enum<NaturalComparator>[])m.invoke(null)) {
assertSame(o, e.invoke(null, o.name()));
}
} catch (Throwable ex) {
throw ExceptionHelper.wrapOrThrow(ex);
}
}
@Test
public void booleanSupplierPredicateReverse() throws Exception {
BooleanSupplier s = new BooleanSupplier() {
@Override
public boolean getAsBoolean() throws Exception {
return false;
}
};
assertTrue(Functions.predicateReverseFor(s).test(1));
s = new BooleanSupplier() {
@Override
public boolean getAsBoolean() throws Exception {
return true;
}
};
assertFalse(Functions.predicateReverseFor(s).test(1));
}
@Test(expected = IllegalArgumentException.class)
public void toFunction2() throws Exception {
Functions.toFunction(new BiFunction<Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@Test(expected = IllegalArgumentException.class)
public void toFunction3() throws Exception {
Functions.toFunction(new Function3<Integer, Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2, Integer t3) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@Test(expected = IllegalArgumentException.class)
public void toFunction4() throws Exception {
Functions.toFunction(new Function4<Integer, Integer, Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2, Integer t3, Integer t4) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@Test(expected = IllegalArgumentException.class)
public void toFunction5() throws Exception {
Functions.toFunction(new Function5<Integer, Integer, Integer, Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2, Integer t3, Integer t4, Integer t5) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@Test(expected = IllegalArgumentException.class)
public void toFunction6() throws Exception {
Functions.toFunction(new Function6<Integer, Integer, Integer, Integer, Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2, Integer t3, Integer t4, Integer t5, Integer t6) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@Test(expected = IllegalArgumentException.class)
public void toFunction7() throws Exception {
Functions.toFunction(new Function7<Integer, Integer, Integer, Integer, Integer, Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2, Integer t3, Integer t4, Integer t5, Integer t6, Integer t7) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@Test(expected = IllegalArgumentException.class)
public void toFunction8() throws Exception {
Functions.toFunction(new Function8<Integer, Integer, Integer, Integer, Integer, Integer, Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2, Integer t3, Integer t4, Integer t5, Integer t6, Integer t7, Integer t8) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@Test(expected = IllegalArgumentException.class)
public void toFunction9() throws Exception {
Functions.toFunction(new Function9<Integer, Integer, Integer, Integer, Integer, Integer, Integer, Integer, Integer, Integer>() {
@Override
public Integer apply(Integer t1, Integer t2, Integer t3, Integer t4, Integer t5, Integer t6, Integer t7, Integer t8, Integer t9) throws Exception {
return null;
}
}).apply(new Object[20]);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void biFunctionFail() throws Exception {
BiFunction biFunction = null;
Functions.toFunction(biFunction);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void function3Fail() throws Exception {
Function3 function3 = null;
Functions.toFunction(function3);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void function4Fail() throws Exception {
Function4 function4 = null;
Functions.toFunction(function4);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void function5Fail() throws Exception {
Function5 function5 = null;
Functions.toFunction(function5);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void function6Fail() throws Exception {
Function6 function6 = null;
Functions.toFunction(function6);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void function7Fail() throws Exception {
Function7 function7 = null;
Functions.toFunction(function7);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void function8Fail() throws Exception {
Function8 function8 = null;
Functions.toFunction(function8);
}
@SuppressWarnings({"unchecked", "rawtypes"})
@Test(expected = NullPointerException.class)
public void function9Fail() throws Exception {
Function9 function9 = null;
Functions.toFunction(function9);
}
@Test
public void identityFunctionToString() {
assertEquals("IdentityFunction", Functions.identity().toString());
}
@Test
public void emptyActionToString() {
assertEquals("EmptyAction", Functions.EMPTY_ACTION.toString());
}
@Test
public void emptyRunnableToString() {
assertEquals("EmptyRunnable", Functions.EMPTY_RUNNABLE.toString());
}
@Test
public void emptyConsumerToString() {
assertEquals("EmptyConsumer", Functions.EMPTY_CONSUMER.toString());
}
@Test
public void errorConsumerEmpty() throws Exception {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
Functions.ERROR_CONSUMER.accept(new TestException());
TestHelper.assertUndeliverable(errors, 0, TestException.class);
assertEquals(errors.toString(), 1, errors.size());
} finally {
RxJavaPlugins.reset();
}
}
}