Errors, Exceptions, and Testing

Overview/Description
Target Audience
Prerequisites
Expected Duration
Lesson Objectives
Course Number
Expertise Level

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Overview/Description
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.

Target Audience
iOS developers who have experience creating apps using the Objective-C and Swift languages, and who are interested in learning to employ defensive programming techniques for iOS apps

Prerequisites
None

Expected Duration (hours)
2.3

Lesson Objectives

Errors, Exceptions, and Testing

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

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

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

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

create assertions using NSAssert

create assertions using the assert function

create assertions in Swift

work with creating and managing errors and exceptions

Course Number:
sd_dpio_a03_it_enus

Expertise Level
Intermediate