英文:
mock methods with EasyMock
问题
我尝试为以下方法创建单元测试，但我找不到在每个方法内部模拟调用的解决方案，您能否通过使用EasyMock为这些方法创建JUnit测试来帮助我：
private static final WebServiceCache<JWebService> SERVICE = new WebServiceCache<>();
public int getCount() {
int res = -1;
try {
String count = SERVICE.invokeSecurelly(new WS<String>() {
@Override
public String execute() throws Exception {
return getWS().getList();
}
});
res = Integer.parseInt(count);
} catch (Exception e) {
LOGGER.error("Count Exception" + e);
}
return res;
}
public int getKeyNumber() {
int res = -1;
try {
String keyId = SERVICE.invokeSecurelly(new WS<String>() {
@Override
public String execute() throws Exception {
return getWS().getID();
}
});
res = Integer.parseInt(keyId);
} catch (Exception e) {
LOGGER.error("getKeyNumBer returns an error" + e);
}
return res;
}
提前致谢
英文:
I try to create unit test fro the following method but i can't find a solution to mock the call inside each method, Could you please help me with creating Junit Test for those methods using EasyMock :
private static final WebServiceCache<JWebService> SERVICE = new WebServiceCache<>();
public int getCount() {
int res = -1;
try {
String count = SERVICE.invokeSecurelly(new WS<String>() {
@Override
public String execute() throws Exception {
return getWS().getList();
}
});
res = Integer.parseInt(count);
} catch (Exception e) {
LOGGER.error("Count Exception" + e);
}
return res;
}
public int getKeyNumber() {
int res = -1;
try {
String keyId = SERVICE.invokeSecurelly(new WS<String>() {
@Override
public String execute() throws Exception {
return getWS().getID();
}
});
res = Integer.parseInt(keyId);
} catch (Exception e) {
LOGGER.error("getKeyNumBer returns an error" + e);
}
return res;
}
Thanks in advance
答案1
得分: 1
要做一些干净的事情，你需要进行一些重构，使其可测试。这是我最终会得到的内容... 猜测你示例中缺失的核心部分。
public class MyClass {
private static final Logger LOGGER = Logger.getLogger(MyClass.class.getName());
private final WebServiceCache<JWebService> service;
public MyClass(WebServiceCache<JWebService> service) {
this.service = service;
}
private int getValue(Supplier<String> invoked) {
try {
String count = service.invokeSecurelly(invoked::get);
return Integer.parseInt(count);
} catch (Exception e) {
LOGGER.error("Count Exception", e);
}
return -1;
}
public int getCount() {
return getValue(() -> getWS().getList());
}
public int getKeyNumber() {
return getValue(() -> getWS().getID());
}
private Stuff getWS() { // 猜测 getWS() 在哪
return null;
}
}
从这里开始，如果我们假设你想要模拟的是 getWS()，代码会是这样的。
import org.easymock.EasyMockSupport;
import org.junit.Before;
import org.junit.Test;
import static org.assertj.core.api.Assertions.assertThat;
import static org.easymock.EasyMock.expect;
public class MyClassTest extends EasyMockSupport {
private WebServiceCache<JWebService> cache = new WebServiceCache<>();
private MyClass tested = partialMockBuilder(MyClass.class)
.addMockedMethod("getWS")
.withConstructor(cache)
.mock();
private Stuff stuff = mock(Stuff.class);
@Before
public void before() {
expect(tested.getWS()).andStubReturn(stuff);
}
@Test
public void getCount() {
expect(stuff.getList()).andStubReturn("8");
replayAll();
assertThat(tested.getCount()).isEqualTo(8);
}
@Test
public void getKeyNumber() {
expect(stuff.getID()).andStubReturn("8");
replayAll();
assertThat(tested.getKeyNumber()).isEqualTo(8);
}
}
英文:
To do something clean, you need some refactoring to make it testable. Here is what I would end up with... guessing part of the missing core in your example.
public class MyClass {
private static final Logger LOGGER = Logger.getLogger(MyClass.class.getName());
private final WebServiceCache<JWebService> service;
public MyClass(WebServiceCache<JWebService> service) {
this.service = service;
}
private int getValue(Supplier<String> invoked) {
try {
String count = service.invokeSecurelly(invoked::get);
return Integer.parseInt(count);
} catch (Exception e) {
LOGGER.error("Count Exception", e);
}
return -1;
}
public int getCount() {
return getValue(() -> getWS().getList());
}
public int getKeyNumber() {
return getValue(() -> getWS().getID());
}
private Stuff getWS() { // guessing where getWS() is
return null;
}
}
From there, if we assume it's getWS() that you want to mock, it would look like this.
import org.easymock.EasyMockSupport;
import org.junit.Before;
import org.junit.Test;
import static org.assertj.core.api.Assertions.assertThat;
import static org.easymock.EasyMock.expect;
public class MyClassTest extends EasyMockSupport {
private WebServiceCache<JWebService> cache = new WebServiceCache<>();
private MyClass tested = partialMockBuilder(MyClass.class)
.addMockedMethod("getWS")
.withConstructor(cache)
.mock();
private Stuff stuff = mock(Stuff.class);
@Before
public void before() {
expect(tested.getWS()).andStubReturn(stuff);
}
@Test
public void getCount() {
expect(stuff.getList()).andStubReturn("8");
replayAll();
assertThat(tested.getCount()).isEqualTo(8);
}
@Test
public void getKeyNumber() {
expect(stuff.getID()).andStubReturn("8");
replayAll();
assertThat(tested.getKeyNumber()).isEqualTo(8);
}
}
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