/*
* 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.test.json;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.lang.reflect.Field;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.rules.TemporaryFolder;
import org.springframework.core.ResolvableType;
import org.springframework.core.io.ByteArrayResource;
import org.springframework.core.io.Resource;
import org.springframework.util.FileCopyUtils;
import org.springframework.util.ReflectionUtils;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link AbstractJsonMarshalTester}.
*
* @author Phillip Webb
*/
public abstract class AbstractJsonMarshalTesterTests {
private static final String JSON = "{\"name\":\"Spring\",\"age\":123}";
private static final String MAP_JSON = "{\"a\":" + JSON + "}";
private static final String ARRAY_JSON = "[" + JSON + "]";
private static final ExampleObject OBJECT = createExampleObject("Spring", 123);
private static final ResolvableType TYPE = ResolvableType
.forClass(ExampleObject.class);
@Rule
public ExpectedException thrown = ExpectedException.none();
@Rule
public TemporaryFolder temp = new TemporaryFolder();
@Test
public void writeShouldReturnJsonContent() throws Exception {
JsonContent<Object> content = createTester(TYPE).write(OBJECT);
assertThat(content).isEqualToJson(JSON);
}
@Test
public void writeListShouldReturnJsonContent() throws Exception {
ResolvableType type = ResolvableTypes.get("listOfExampleObject");
List<ExampleObject> value = Collections.singletonList(OBJECT);
JsonContent<Object> content = createTester(type).write(value);
assertThat(content).isEqualToJson(ARRAY_JSON);
}
@Test
public void writeArrayShouldReturnJsonContent() throws Exception {
ResolvableType type = ResolvableTypes.get("arrayOfExampleObject");
ExampleObject[] value = new ExampleObject[] { OBJECT };
JsonContent<Object> content = createTester(type).write(value);
assertThat(content).isEqualToJson(ARRAY_JSON);
}
@Test
public void writeMapShouldReturnJsonContent() throws Exception {
ResolvableType type = ResolvableTypes.get("mapOfExampleObject");
Map<String, Object> value = new LinkedHashMap<>();
value.put("a", OBJECT);
JsonContent<Object> content = createTester(type).write(value);
assertThat(content).isEqualToJson(MAP_JSON);
}
@Test
public void createWhenResourceLoadClassIsNullShouldThrowException() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("ResourceLoadClass must not be null");
createTester(null, ResolvableType.forClass(ExampleObject.class));
}
@Test
public void createWhenTypeIsNullShouldThrowException() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Type must not be null");
createTester(getClass(), null);
}
@Test
public void parseBytesShouldReturnObject() throws Exception {
AbstractJsonMarshalTester<Object> tester = createTester(TYPE);
assertThat(tester.parse(JSON.getBytes())).isEqualTo(OBJECT);
}
@Test
public void parseStringShouldReturnObject() throws Exception {
AbstractJsonMarshalTester<Object> tester = createTester(TYPE);
assertThat(tester.parse(JSON)).isEqualTo(OBJECT);
}
@Test
public void readResourcePathShouldReturnObject() throws Exception {
AbstractJsonMarshalTester<Object> tester = createTester(TYPE);
assertThat(tester.read("example.json")).isEqualTo(OBJECT);
}
@Test
public void readFileShouldReturnObject() throws Exception {
File file = this.temp.newFile("example.json");
FileCopyUtils.copy(JSON.getBytes(), file);
AbstractJsonMarshalTester<Object> tester = createTester(TYPE);
assertThat(tester.read(file)).isEqualTo(OBJECT);
}
@Test
public void readInputStreamShouldReturnObject() throws Exception {
InputStream stream = new ByteArrayInputStream(JSON.getBytes());
AbstractJsonMarshalTester<Object> tester = createTester(TYPE);
assertThat(tester.read(stream)).isEqualTo(OBJECT);
}
@Test
public void readResourceShouldReturnObject() throws Exception {
Resource resource = new ByteArrayResource(JSON.getBytes());
AbstractJsonMarshalTester<Object> tester = createTester(TYPE);
assertThat(tester.read(resource)).isEqualTo(OBJECT);
}
@Test
public void readReaderShouldReturnObject() throws Exception {
Reader reader = new StringReader(JSON);
AbstractJsonMarshalTester<Object> tester = createTester(TYPE);
assertThat(tester.read(reader)).isEqualTo(OBJECT);
}
@Test
public void parseListShouldReturnContent() throws Exception {
ResolvableType type = ResolvableTypes.get("listOfExampleObject");
AbstractJsonMarshalTester<Object> tester = createTester(type);
assertThat(tester.parse(ARRAY_JSON)).asList().containsOnly(OBJECT);
}
@Test
public void parseArrayShouldReturnContent() throws Exception {
ResolvableType type = ResolvableTypes.get("arrayOfExampleObject");
AbstractJsonMarshalTester<Object> tester = createTester(type);
assertThat(tester.parse(ARRAY_JSON)).asArray().containsOnly(OBJECT);
}
@Test
public void parseMapShouldReturnContent() throws Exception {
ResolvableType type = ResolvableTypes.get("mapOfExampleObject");
AbstractJsonMarshalTester<Object> tester = createTester(type);
assertThat(tester.parse(MAP_JSON)).asMap().containsEntry("a", OBJECT);
}
protected static final ExampleObject createExampleObject(String name, int age) {
ExampleObject exampleObject = new ExampleObject();
exampleObject.setName(name);
exampleObject.setAge(age);
return exampleObject;
}
protected final AbstractJsonMarshalTester<Object> createTester(ResolvableType type) {
return createTester(AbstractJsonMarshalTesterTests.class, type);
}
protected abstract AbstractJsonMarshalTester<Object> createTester(
Class<?> resourceLoadClass, ResolvableType type);
/**
* Access to field backed by {@link ResolvableType}.
*/
public static class ResolvableTypes {
public List<ExampleObject> listOfExampleObject;
public ExampleObject[] arrayOfExampleObject;
public Map<String, ExampleObject> mapOfExampleObject;
public static ResolvableType get(String name) {
Field field = ReflectionUtils.findField(ResolvableTypes.class, name);
return ResolvableType.forField(field);
}
}
}