mocking

问题 Suppose I have an index.ts that will import Database.ts and run some queries. To test this index.ts file, I want to mock the Database.ts because I don't want to connect to any real database. This is my index.ts : import { connect } from './Database' export async function runSomeQuery() { const connection = await connect() const result = await connection.query('SOME QUERY') return result } and here is the mock of database ( __mocks__/Database.ts ) const mockConnection = { query: jest.fn() }

问题 It seems that python nosetest will quit when encountered "sys.exit()", and mocking of this built-in doesn't work. Thanks for suggestions. 回答1: You can try catching the SystemExit exception. It is raised when someone calls sys.exit() . with self.assertRaises(SystemExit): myFunctionThatSometimesCallsSysExit() 回答2: import sys sys.exit = lambda *x: None Keep in mind that programs may reasonably expect not to continue after sys.exit() , so patching it out might not actually help... 回答3: If you're

问题 It seems that python nosetest will quit when encountered "sys.exit()", and mocking of this built-in doesn't work. Thanks for suggestions. 回答1: You can try catching the SystemExit exception. It is raised when someone calls sys.exit() . with self.assertRaises(SystemExit): myFunctionThatSometimesCallsSysExit() 回答2: import sys sys.exit = lambda *x: None Keep in mind that programs may reasonably expect not to continue after sys.exit() , so patching it out might not actually help... 回答3: If you're

问题 I have a method in my spark application that loads the data from a MySQL database. the method looks something like this. trait DataManager { val session: SparkSession def loadFromDatabase(input: Input): DataFrame = { session.read.jdbc(input.jdbcUrl, s"(${input.selectQuery}) T0", input.columnName, 0L, input.maxId, input.parallelism, input.connectionProperties) } } The method does nothing else other than executing jdbc method and loads data from the database. How can I test this method? The

问题 I have a method in my spark application that loads the data from a MySQL database. the method looks something like this. trait DataManager { val session: SparkSession def loadFromDatabase(input: Input): DataFrame = { session.read.jdbc(input.jdbcUrl, s"(${input.selectQuery}) T0", input.columnName, 0L, input.maxId, input.parallelism, input.connectionProperties) } } The method does nothing else other than executing jdbc method and loads data from the database. How can I test this method? The

问题 I am trying to mock a ProceedingJoinPoint class and I am having difficulty mocking a method. Here is the code that is calling the mock class: ... // ProceedingJoinPoint joinPoint Object targetObject = joinPoint.getTarget(); try { MethodSignature signature = (MethodSignature) joinPoint.getSignature(); Method method = signature.getMethod(); ... ... and here is my mocked class attempt so far... accountService = new AccountService(); ProceedingJoinPoint joinPoint = mock(ProceedingJoinPoint.class)

问题 I'm working on a project where there is a lot of external service messaging. A good way to describe it in only a slightly "hyperbolas" way would be an application where the system has to send messages to the Flicker API, the Facebook API, and the Netflix API. To support disconnected scenarios, logging concerns, developer usability, configuration, etc... I've experimented using an approach which heavily uses generics and expression trees. The end result looks like this: Messenger<NetflixApi>

问题 I'm working on a project where there is a lot of external service messaging. A good way to describe it in only a slightly "hyperbolas" way would be an application where the system has to send messages to the Flicker API, the Facebook API, and the Netflix API. To support disconnected scenarios, logging concerns, developer usability, configuration, etc... I've experimented using an approach which heavily uses generics and expression trees. The end result looks like this: Messenger<NetflixApi>

问题 My Laravel 5.5 application has a Product model. The Product model has a dispatchesEvents property that looks like this: /** * The event map for the model. * * @var array */ protected $dispatchesEvents = [ 'created' => ProductCreated::class, 'updated' => ProductUpdated::class, 'deleted' => ProductDeleted::class ]; I also have a listener that is called CreateProductInMagento which is mapped to the ProductCreated event in the EventServiceProvider . This listener implements the ShouldQueue

问题 My Laravel 5.5 application has a Product model. The Product model has a dispatchesEvents property that looks like this: /** * The event map for the model. * * @var array */ protected $dispatchesEvents = [ 'created' => ProductCreated::class, 'updated' => ProductUpdated::class, 'deleted' => ProductDeleted::class ]; I also have a listener that is called CreateProductInMagento which is mapped to the ProductCreated event in the EventServiceProvider . This listener implements the ShouldQueue