VCR

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Installation

In order to save tapes, you will need to define VCR_DIR in your scheme. This should point to the directory where you want tapes to be stored. We normally use this:

Name	Value
VCR_DIR	$(SOURCE_ROOT)/$(PROJECT_NAME)Tests/VCRTapes

Cocoapods

CocoaPods is a dependency manager for Cocoa projects. For usage and installation instructions, visit their website. To integrate VCR into your Xcode project using CocoaPods, specify it in your Podfile:

pod 'VCR'

Swift Package Manager

The Swift Package Manager is a tool for automating the distribution of Swift code and is integrated into the swift compiler.

Once you have your Swift package set up, adding VCR as a dependency is as easy as adding it to the dependencies value of your Package.swift.

dependencies: [
    .package(url: "https://github.com/aarons22/SwiftVCR.git", .upToNextMajor(from: "0.3.0"))
]

Usage

Recording

let session = VCRSession()
session.insertTape("example", record: true)

A json file called example.json will be placed into the VCR_DIR (defined above).

Mulitple requests

You can record multiple requests in given session by inserting additional tapes. VCRSession will write out a json file for each tape inserted.

For any additional requests made, it will fallback to the actual URLSession request.

Playback

let session = VCRSession()
session.insertTape("example")

This will read the file example.json from the VCR_DIR and return it in place of making the request.

Dependency Injection

VCRSession is a an instance of URLSession, so it can be injected into any class that uses it. For example, given an http client:

class HTTPClient {
    let session: URLSession

    init(session: URLSession = URLSession.shared) {
        self.session = session
    }

    func request(_ request: URLRequest, completion: @escaping (Bool) -> Void) {
        let task = self.session.dataTask(with: request) { (data, response, error) in
            completion(true)
        }

        task.resume()
    }
}

You can inject VCRSession in place of the default:

let session = VCRSession()
session.insertTape("example")
let client = HTTPClient(session: session)

Author

Aaron Sapp, @aaronsapp

License

VCR is available under the MIT license. See the LICENSE file for more info.