我正在使用Powermock为泽西Web服务构建测试用例,我试图模拟数据库函数调用,专门用于PUT和POST调用。但是,我遇到问题需要解决。嘲笑私有无效方法给出AssertionError
这里是Web服务调用的一个样子:
@Path("/v1.0.0")
public class WebService {
@POST
@Path("application")
@Consumes(MediaType.APPLICATION_JSON)
public Response createApplication(@QueryParam("callback") String callbackFunction, String body)
throws NamingException, SQLException, IllegalStateException, CacheException, UnknownHostException,
IOException {
String query = "exec spInsertApplication ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?";
String[] params = new String[16];
JSONObject json = (JSONObject) JSONValue.parse(body);
params[0] = json.get("name").toString();
params[4] = json.get("software").toString();
params[14] = json.get("customerid").toString();
//Null checks for other params
runUpdateQuery(query, params);
return generateResponse(callbackFunction, null);
}
private void runUpdateQuery(String query, String[] queryParameters) {
//Handles running DB query
}
}
什么我测试的情况下目前的样子:
@RunWith(PowerMockRunner.class)
@PrepareForTest(WebService.class)
@PowerMockIgnore({"javax.management.*"})
public class TestRestWebService {
@Test
public void test_createApplication_returns_http_success() throws Exception {
String query = "exec spInsertApplication ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?";
String[] params = new String[16];
params[0] = "test_app_name";
params[4] = "test_software";
params[14] = "23";
WebService tested = createPartialMockAndInvokeDefaultConstructor(WebService.class, "runUpdateQuery");
expectPrivate(tested, "runUpdateQuery", query, params).andAnswer(
new IAnswer<Void>() {
@Override
public Void answer() throws Throwable {
return null;
}
});
replay(tested);
String JSONString = "{\"name\":\"test_service_name\",\"software\":\"test_software\",\"customerid\":\"23\"}";
Response output = tested.createApplication("CALLBACK", JSONString);
verify(tested);
assertTrue(output.getStatus() == 200);
}
}
在运行时,这是给我一个AssertionError说:
意外的方法调用WebService.runUpdateQuery(“exec spInsertApplication?,?,?,? ,?,?,?,?,?,?,?,?,?, ?,?,?“,[”test_service_name“,null,null,”test_software“, null,null, ,null,null,null,null,“23”,null]):
WebService.runUpdateQuery(“exec spInsertApplication?,?,?, ?,?,?,?,?,?,? ,?,?,?,?,?,?“,[”test_service_name“,null, null,null,”test_software“,null,null,null,null,null,null, null, 23,null]):预计:1,实际:0
经过多一点挖掘后,我发现原因很可能与PowerMock如何比较字符串a rrays。所以我也试着用更通用的方法,因为函数返回void无效,通过使用EasyMock.anyString()
和EasyMock.isA(String[].class)
来代替我的两个参数,但是这会导致NullPointerException。下面是堆栈跟踪的前几行:
java.lang.NullPointerException
at java.lang.Class.isAssignableFrom(Native Method)
at org.powermock.reflect.internal.WhiteboxImpl.checkIfParameterTypesAreSame(WhiteboxImpl.java:2432)
at org.powermock.reflect.internal.WhiteboxImpl.getMethods(WhiteboxImpl.java:1934)
at org.powermock.reflect.internal.WhiteboxImpl.getBestMethodCandidate(WhiteboxImpl.java:1025)
at org.powermock.reflect.internal.WhiteboxImpl.findMethodOrThrowException(WhiteboxImpl.java:948)
我如何去正确地嘲讽这种私人无效的方法,以避免我的测试过程中调用数据库?