Which of the following scenarios most likely violates the Liskov Substitution Principle?
A subclass has more attributes than its superclass.
A subclass implements an interface that the superclass does not implement.
A subclass overrides a method of its superclass and provides additional functionality.
A subclass throws an exception that is not declared in the superclass's method signature.
How can you identify potential violations of the Liskov Substitution Principle in your code?
By looking for instances where a subclass throws an exception not declared in the superclass or introduces behavior that breaks the superclass's contract.
By ensuring all methods in subclasses are static.
By avoiding inheritance altogether and favoring composition.
By only using abstract classes and interfaces.
How can SOLID principles impact team collaboration in software development?
By reducing the need for communication within the team
By enforcing strict coding style guidelines
By automating code review processes
By promoting a shared understanding of code structure and design
How does the Interface Segregation Principle relate to the idea of 'programming to an interface, not an implementation'?
They are unrelated concepts in software design.
ISP only applies to statically typed languages, while 'programming to an interface' is a dynamic language concept.
ISP helps achieve the flexibility of using different implementations by keeping interfaces minimal and focused on client needs.
ISP contradicts this idea by promoting the use of concrete classes.
Which of the following best describes the Dependency Inversion Principle (DIP)?
Low-level modules should depend on high-level modules.
Abstractions should depend on concrete implementations.
High-level modules should depend on low-level modules.
Both high-level and low-level modules should depend on abstractions.
How does the Interface Segregation Principle contribute to loose coupling in software design?
By minimizing dependencies between classes to only what is absolutely necessary.
By promoting the use of concrete classes instead of interfaces.
By reducing the need for unit testing.
By encouraging the use of global variables for communication between classes.
How does DIP help make code more maintainable?
By making it easier to test modules in isolation
By making classes smaller
By reducing the need for comments
By reducing the number of classes needed
Why might strictly adhering to the Open/Closed Principle in every single part of a codebase be impractical?
It makes the codebase less secure.
It simplifies the design too much.
It can lead to over-engineering and unnecessary complexity in some cases.
It violates other SOLID principles.
Which of the following best describes the impact of SRP on code testability?
SRP makes it more complex to write unit tests as classes have intertwined functionalities.
SRP has no significant impact on the ease or difficulty of writing unit tests.
SRP makes it impossible to write unit tests as it encourages separation of concerns.
SRP makes unit testing easier as classes are smaller and have well-defined responsibilities.
Imagine a class named 'Employee' that handles both employee data (like name, ID) and database operations. What SOLID principle does this violate?
Liskov Substitution Principle
Open/Closed Principle
Single Responsibility Principle
Interface Segregation Principle