/*
* Copyright 2012-2017 the original author or authors.
*
* 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 org.springframework.boot.context.properties.bind;
import java.io.IOException;
import java.util.NoSuchElementException;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyZeroInteractions;
/**
* Tests for {@link BindResult}.
*
* @author Phillip Webb
* @author Madhura Bhave
*/
public class BindResultTests {
@Rule
public ExpectedException thrown = ExpectedException.none();
@Mock
private Consumer<String> consumer;
@Mock
private Function<String, String> mapper;
@Mock
private Supplier<String> supplier;
@Before
public void setup() {
MockitoAnnotations.initMocks(this);
}
@Test
public void getWhenHasValueShouldReturnValue() throws Exception {
BindResult<String> result = BindResult.of("foo");
assertThat(result.get()).isEqualTo("foo");
}
@Test
public void getWhenHasNoValueShouldThrowException() throws Exception {
BindResult<String> result = BindResult.of(null);
this.thrown.expect(NoSuchElementException.class);
this.thrown.expectMessage("No value bound");
result.get();
}
@Test
public void isBoundWhenHasValueShouldReturnTrue() throws Exception {
BindResult<String> result = BindResult.of("foo");
assertThat(result.isBound()).isTrue();
}
@Test
public void isBoundWhenHasNoValueShouldFalse() throws Exception {
BindResult<String> result = BindResult.of(null);
assertThat(result.isBound()).isFalse();
}
@Test
public void ifBoundWhenConsumerIsNullShouldThrowException() throws Exception {
BindResult<String> result = BindResult.of("foo");
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Consumer must not be null");
result.ifBound(null);
}
@Test
public void ifBoundWhenHasValueShouldCallConsumer() throws Exception {
BindResult<String> result = BindResult.of("foo");
result.ifBound(this.consumer);
verify(this.consumer).accept("foo");
}
@Test
public void ifBoundWhenHasNoValueShouldNotCallConsumer() throws Exception {
BindResult<String> result = BindResult.of(null);
result.ifBound(this.consumer);
verifyZeroInteractions(this.consumer);
}
@Test
public void mapWhenMapperIsNullShouldThrowException() throws Exception {
BindResult<String> result = BindResult.of("foo");
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Mapper must not be null");
result.map(null);
}
@Test
public void mapWhenHasValueShouldCallMapper() throws Exception {
BindResult<String> result = BindResult.of("foo");
given(this.mapper.apply("foo")).willReturn("bar");
assertThat(result.map(this.mapper).get()).isEqualTo("bar");
}
@Test
public void mapWhenHasNoValueShouldNotCallMapper() throws Exception {
BindResult<String> result = BindResult.of(null);
result.map(this.mapper);
verifyZeroInteractions(this.mapper);
}
@Test
public void orElseWhenHasValueShouldReturnValue() throws Exception {
BindResult<String> result = BindResult.of("foo");
assertThat(result.orElse("bar")).isEqualTo("foo");
}
@Test
public void orElseWhenHasValueNoShouldReturnOther() throws Exception {
BindResult<String> result = BindResult.of(null);
assertThat(result.orElse("bar")).isEqualTo("bar");
}
@Test
public void orElseGetWhenHasValueShouldReturnValue() throws Exception {
BindResult<String> result = BindResult.of("foo");
assertThat(result.orElseGet(this.supplier)).isEqualTo("foo");
verifyZeroInteractions(this.supplier);
}
@Test
public void orElseGetWhenHasValueNoShouldReturnOther() throws Exception {
BindResult<String> result = BindResult.of(null);
given(this.supplier.get()).willReturn("bar");
assertThat(result.orElseGet(this.supplier)).isEqualTo("bar");
}
@Test
public void orElseCreateWhenTypeIsNullShouldThrowException() throws Exception {
BindResult<String> result = BindResult.of("foo");
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Type must not be null");
result.orElseCreate(null);
}
@Test
public void orElseCreateWhenHasValueShouldReturnValue() throws Exception {
BindResult<ExampleBean> result = BindResult.of(new ExampleBean("foo"));
assertThat(result.orElseCreate(ExampleBean.class).getValue()).isEqualTo("foo");
}
@Test
public void orElseCreateWhenHasValueNoShouldReturnCreatedValue() throws Exception {
BindResult<ExampleBean> result = BindResult.of(null);
assertThat(result.orElseCreate(ExampleBean.class).getValue()).isEqualTo("new");
}
@Test
public void orElseThrowWhenHasValueShouldReturnValue() throws Exception {
BindResult<String> result = BindResult.of("foo");
assertThat(result.orElseThrow(IOException::new)).isEqualTo("foo");
}
@Test
public void orElseThrowWhenHasNoValueShouldThrowException() throws Exception {
BindResult<String> result = BindResult.of(null);
this.thrown.expect(IOException.class);
result.orElseThrow(IOException::new);
}
@Test
public void hashCodeAndEquals() throws Exception {
BindResult<?> result1 = BindResult.of("foo");
BindResult<?> result2 = BindResult.of("foo");
BindResult<?> result3 = BindResult.of("bar");
BindResult<?> result4 = BindResult.of(null);
assertThat(result1.hashCode()).isEqualTo(result2.hashCode());
assertThat(result1).isEqualTo(result1).isEqualTo(result2).isNotEqualTo(result3)
.isNotEqualTo(result4);
}
@Test
public void ofWhenHasValueShouldReturnBoundResultOfValue() throws Exception {
BindResult<Object> result = BindResult.of("foo");
assertThat(result.isBound()).isTrue();
assertThat(result.get()).isEqualTo("foo");
}
@Test
public void ofWhenValueIsNullShouldReturnUnbound() throws Exception {
BindResult<Object> result = BindResult.of(null);
assertThat(result.isBound()).isFalse();
assertThat(result).isSameAs(BindResult.of(null));
}
static class ExampleBean {
private final String value;
ExampleBean() {
this.value = "new";
}
ExampleBean(String value) {
this.value = value;
}
public String getValue() {
return this.value;
}
}
}