Errors, Exceptions, and Testing

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

Managing Network Interaction

Managing Network Interaction

• start the course
• create a TCP client connection from an iOS app
• send and receive data over a TCP connection in an iOS app
• determine when an iOS app can and cannot access the Internet
• determine when an iOS app can and cannot reach a specific IP address
• determine when an iOS app can and cannot access the Internet
• install and configure the network link conditioner to be able to test iOS apps in different connection conditions
• use CF functions to encode URLs
• use CF functions to decode URLs
• use NSURLConnection to make synchronous and asynchronous network calls
• use NSURLConnection to make asynchronous network calls without using custom delegates
• create and apply a configuration object to an NSURLSession instance
• request a URL in a simple manner using NSURLSession and system delegates
• request a URL in a flexible manner using NSURLSession and custom delegates
• stop script execution in any HTML loaded into a WebView
• disallow Internet traffic over cellular connections in an iOS app
• capture and handle redirect responses from a server
• use NSURLSession to reliably download and save files in an iOS app
• use NSURLSession to handle users stopping and starting download operations
• use NSURLSession to handle downloads that fail
• use NSURLSession to upload files to a web server
• use common techniques for managing network interaction

Protecting Data in iOS Apps

Protecting Data in iOS Apps

• start the course
• obscure sensitive data from plain sight in an iOS app interface
• use alert view styles to collect sensitive user data
• obscure sensitive data when using alert controllers
• use Touch ID authentication in iOS apps on supported devices
• recognize how to write text data to files while reducing the risk of data corruption
• recognize how to write binary data to files while reducing the risk of data corruption
• use built-in hardware encryption to store text files securely on disk
• use built-in hardware encryption to store binary files securely on disk
• register for notifications and delegate methods that indicate when protected files change status
• create and access protected files while an iOS device is in the background
• securely store sensitive data using the iOS keychain
• search and retrieve sensitive data from the iOS keychain
• update sensitive data stored in the iOS keychain
• remove sensitive data stored in the iOS keychain
• define when keychain items are accessible depending on the lock status of an iOS device
• use the Randomization Services API to generate random numbers
• create an MD5 hash using the Common Crypto library
• create an SHA hash using the Common Crypto library
• use the RNCryptor library to encrypt and decrypt data in an iOS app
• use the Certificate, Key, and Trust functions to generate an asymmetric key pair
• use the public key of an asymmetric key pair to encrypt data
• use the private key of an asymmetric key pair to decrypt data
• create and manage iOS keychain items

Thinking Defensively about Functions, Methods, and Input

Thinking Defensively about Functions, Methods, and Input

• start the course
• create code that handles file inputs to an iOS app
• create code that handles url scheme inputs to an iOS app
• validate user-provided input using Objective-C
• use a real-time approach to validating user-provided input in Objective-C
• use secure coding principles to guard against format string attacks
• restrict free navigation around the Web based on user input in a UIWebView
• use best practices to name functions and methods in Objective-C
• use best practices to name accessor methods in Objective-C
• use best practices to name delegate methods in Objective-C
• reduce method complexity in iOS apps using Objective-C
• overload a function to reduce code complexity in Swift
• design functions that have a single and defined focus
• identify and use different class naming standards in Objective-C
• create and use constants in Objective-C
• create and use constants in Swift
• create and use resource files in an iOS app
• easily store and retrieve data from the defaults database
• recognize how using brackets can protect against potential bugs
• design while loops that are not vulnerable to running forever
• design for loops that are not vulnerable to running forever
• identify and avoid bugs caused by altered loop variables
• handle various types of inputs to an iOS app