Errors, Exceptions, and Testing from Skillsoft

Online, Self-Paced

Defensive Programming in iOS has to do with using coding practices and techniques to create apps, that are reliable, resilient, and easily testable. This course will teach you about thinking defensively in your approach to errors and exception handling, and also how to create automated tests for iOS apps.

Learning Objectives

Working with Errors

start the course
use error information returned indirectly from methods
test for specific kinds of errors based on domains and codes
create and return error objects from custom methods
use alert views to inform end users of error information
use an underlying error object to find out more detail about an error that has occurred

Working with Exceptions

create and throw/raise exceptions in iOS apps
catch and handle exceptions in iOS apps
use the @finally directive to guarantee code execution
convert a raised exception to an error when appropriate
capture and handle specific types of exceptions locally

Automated Unit Testing

create an XCTestCase Class using Xcode and Objective-C
create an XCTestCase Class using Xcode and Swift
create, execute, and check results of unit tests using Xcode and Objective-C
creating and executing unit tests in Swift
unit test private methods in custom classes
how to create tests that measure execution time of code
create and execute asynchronous tests

Automated UI Testing

recognize how to initiate the creation of an automated test of an iOS app
access interface elements by navigating the element hierarchy
use accessibility labels to interact with iOS app elements when automation testing
select and tap interface elements in automation testing
define pass and fail benchmarks for automation testing
use the logElementTree method to understand an app's view hierarchy
import previously created automation scripts for reuse

Assertions

create assertions using NSAssert
create assertions using the assert function
create assertions in Swift

Practice: Errors and Exceptions

work with creating and managing errors and exceptions

Framework Connections

Design and Development

The materials within this course focus on the NICE Framework Task, Knowledge, and Skill statements identified within the indicated NICE Framework component(s):