Groovy 如何在Spock中模拟类的单个方法?
在我的课堂上,我尝试测试一种类似于以下的方法:Groovy 如何在Spock中模拟类的单个方法?,groovy,spock,Groovy,Spock,在我的课堂上,我尝试测试一种类似于以下的方法: class SomeHelper { ByteArrayOutputStream fooBar (Request request) { ByteArrayOutputStream baos = someParser.parseData(getRequestFileInputStream(request.filename)) return baos } InputStream getRequest
class SomeHelper {
ByteArrayOutputStream fooBar (Request request) {
ByteArrayOutputStream baos = someParser.parseData(getRequestFileInputStream(request.filename))
return baos
}
InputStream getRequestFileInputStream(String filename) {
//return intputStream of object from S3
}
....
}
在上面的例子中,getRequestFileInputStream
是一个将文件名作为参数的方法。它从AWS S3获取该文件的输入流。在从Spock测试fooBar
方法时,我想为getRequestFileInputStream
方法提供一个模拟,因为我不想使用类中该方法的实现,因为它指向另一个bucket名称
有可能这样做吗
以下是我尝试过的:
class SomeHelperSpec extends Specification{
//this is the implementation of getRequestFileInputStream I want to use while testing
InputStream getObjectFromS3(String objectName) {
def env = System.getenv()
AwsClientBuilder.EndpointConfiguration endpoint = new AwsClientBuilder.EndpointConfiguration(env["endpoint_url"], env["region_name"])
AmazonS3ClientBuilder builder = AmazonS3ClientBuilder.standard()
builder.setEndpointConfiguration(endpoint)
builder.setCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(env["ACCESS_KEY"], env["SECRET_KEY"])))
AmazonS3 s3 = builder.build()
return s3.getObject("testbucket", objectName).getObjectContent()
}
def "test fooBar" () {
given:
someHelper = new SomeHelper()
someHelper.getRequestFileInputStream(_) >> getObjectFromS3(fileName)
someHelper.someParser = Mock(SomeParser) {
....
}
Request requestInstance = new Request()
request.filename = fileName
request.fileType = fileType
expect:
someHelper.fooBar(requestInstance).getText == returnVal
where:
fileType | fileName | returnVal
"PDF" | "somepdf.pdf" | "somereturnval"
}
}
但是,上面的方法不起作用,因为它仍然试图在SomeHelper
中调用getRequestFileInputStream
的原始实现,而不是使用规范中提供的模拟实现。您可以使用间谍
def someHelper = Spy(SomeHelper)
someHelper.getRequestFileInputStream(_) >> getObjectFromS3(fileName)
请参阅。您可以使用真实对象,但使用重写方法:
given:
someHelper = new SomeHelper() {
@Override
InputStream getRequestFileInputStream(String filename) {
return getObjectFromS3(fileName)
}
}