Which package in Go is commonly used to create an HTTP server?
- fmt
- ioutil
- net/http
- os
In Go, the net/http package is commonly used to create an HTTP server. It provides functionalities to handle HTTP requests and responses effectively.
The _________ package in Go allows you to load Go packages dynamically.
- dynamic
- loader
- package
- reflect
The reflect package in Go allows you to inspect the structure of variables at runtime and manipulate them in various ways. It provides functions to examine the type and value of variables, create new variables of arbitrary types, and call methods dynamically. One of its uses is to load and examine Go packages dynamically, enabling functionalities like plugin systems and dynamic code loading.
The '_____' operator in Go is used to shift bits to the right.
- <<
- <<<
- >>
- >>>
The correct operator to shift bits to the right in Go is the right shift operator ('>>'). This operator shifts the bits of the left operand to the right by the number of positions specified by the right operand.
What does mocking help achieve in unit testing?
- Bypassing the need for unit tests
- Faster execution of tests
- Introduction of bugs
- Isolation of code under test
Mocking in unit testing helps achieve the isolation of the code under test by simulating the behavior of dependencies. This isolation ensures that tests focus only on the specific functionality being tested, without interference from external factors. It helps in writing more reliable and effective unit tests.
Your team has achieved 80% code coverage, but you're encountering difficulties in increasing it further. What strategies would you employ to overcome this challenge?
- Conduct code reviews with a focus on test coverage and encourage peer collaboration to identify testing gaps.
- Identify areas of the code that are difficult to test, such as external dependencies or tightly coupled components, and refactor them for better testability.
- Implement mutation testing to identify gaps in the existing test suite and improve test effectiveness.
- Invest in training and workshops for team members to enhance their understanding of testing principles and best practices.
Refactoring code for better testability can make it easier to write comprehensive tests, while mutation testing can help uncover weaknesses in the existing test suite, leading to improvements in overall coverage. Training and workshops can also empower team members to write better tests and understand the importance of thorough testing practices.
Can a Go interface have fields?
- Depends on the implementation
- No
- Only if it's a pointer
- Yes
No, a Go interface cannot have fields. It only defines a set of methods that a concrete type must implement.
The _______ method in the database/sql package is used to close a database connection.
- Close
- Shutdown
- End
- Disconnect
The correct option is "Close". In Golang's database/sql package, the Close method is used to gracefully close a database connection, releasing any resources associated with it. It's essential for efficient resource management.
The _______ framework in Go provides features like test parallelization and subtests for organizing tests.
- Ginkgo
- Gomega
- Gotest
- Gunit
Gotest, the standard testing framework in Go, offers built-in support for test parallelization and subtests. These features help in writing efficient and well-organized test suites in Go applications.
What is a recommended practice for naming test functions in Go?
- Begin with 'test_' prefix
- Begin with lowercase letter
- Use CamelCase notation with 'Test' prefix
- Use descriptive names without prefixes
In Go, a recommended practice for naming test functions is to use CamelCase notation with a 'Test' prefix. This convention helps to clearly identify test functions from regular functions, making the codebase more readable and maintaining consistency across test suites.
You're working on a Go project where you need to integrate with different payment gateways, each with its own API. How would you design your code to handle this integration in a flexible and extensible way?
- Use conditional statements to switch between different API calls based on the payment gateway type.
- Use function overloading to create multiple versions of the integration function for each gateway.
- Use interfaces to define a common payment gateway interface and implement gateway-specific integration.
- Use struct composition to embed gateway-specific functionality into a generic payment gateway struct.
Leveraging interfaces in Go, you can define a common payment gateway interface with methods like ProcessPayment(amount float64) error. Each payment gateway can then implement this interface with its own API-specific integration logic. This design promotes flexibility and extensibility, as new payment gateways can be seamlessly integrated by implementing the common interface. It also simplifies testing and maintenance by providing a unified abstraction for interacting with diverse payment gateways.