GPS track summary presenter tests

TrackSummaryPresenterTests.swift

import Foundation
import XCTest

class TrackSummaryPresenterTests: XCTestCase {
    func testCallsOutputWithExpectedValues() {
        let outputSpy = TrackSummaryPresenterOutputSpy()
        let presenter = TrackSummaryPresenter(output: outputSpy)
        let track = TrackSummary(name: "Trip", startTime: 1449567617, distance: 200)

        presenter.update(track)

        XCTAssertEqual(outputSpy.invokedName, "Trip")
        XCTAssertEqual(outputSpy.invokedDate, "12/8/15")
        XCTAssertEqual(outputSpy.invokedDistance, "200.0 m")
    }
}

class TrackSummaryPresenterOutputSpy {
    private(set) var invokedName: String!
    private(set) var invokedDate: String!
    private(set) var invokedDistance: String!
}

extension TrackSummaryPresenterOutputSpy: TrackSummaryPresenterOutput {
    func setName(name: String) {
        invokedName = name
    }

    func setDate(date: String) {
        invokedDate = date
    }

    func setDistance(distance: String) {
        invokedDistance = distance
    }
}