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https://github.com/mas-cli/mas
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40 lines
1.2 KiB
Swift
40 lines
1.2 KiB
Swift
//
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// NetworkSessionMockFromFile.swift
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// masTests
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//
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// Created by Ben Chatelain on 2019-01-05.
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// Copyright © 2019 mas-cli. All rights reserved.
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//
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import Foundation
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import PromiseKit
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/// Mock NetworkSession for testing with saved JSON response payload files.
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class NetworkSessionMockFromFile: NetworkSessionMock {
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/// Path to response payload file relative to test bundle.
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private let responseFile: String
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/// Initializes a mock URL session with a file for the response.
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///
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/// - Parameter responseFile: Name of file containing JSON response body.
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init(responseFile: String) {
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self.responseFile = responseFile
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}
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/// Loads data from a file.
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///
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/// - Parameters:
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/// - url: unused
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/// - completionHandler: Closure which is delivered either data or an error.
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override func loadData(from _: URL) -> Promise<Data> {
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guard let fileURL = Bundle.url(for: responseFile)
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else { fatalError("Unable to load file \(responseFile)") }
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do {
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return .value(try Data(contentsOf: fileURL, options: .mappedIfSafe))
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} catch {
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print("Error opening file: \(error)")
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return Promise(error: error)
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}
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}
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}
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