MinimumDeploymentTargetTests.swift

//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2014-2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See http://swift.org/LICENSE.txt for license information
// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//

@testable import PackageModel
import XCTest

import struct TSCBasic.ProcessResult

class MinimumDeploymentTargetTests: XCTestCase {
    func testDoesNotAssertWithNoOutput() throws {
        #if !os(macOS)
        // these tests eventually call `xcrun`.
        try XCTSkipIf(true, "test is only supported on macOS")
        #endif
        let result = ProcessResult(arguments: [],
                                   environmentBlock: [:],
                                   exitStatus: .terminated(code: 0),
                                   output: "".asResult,
                                   stderrOutput: "xcodebuild: error: SDK \"macosx\" cannot be located.".asResult)

        XCTAssertNil(try MinimumDeploymentTarget.computeXCTestMinimumDeploymentTarget(with: result, platform: .macOS))
    }

    func testThrowsWithNonPathOutput() throws {
        #if !os(macOS)
        // these tests eventually call `xcrun`.
        try XCTSkipIf(true, "test is only supported on macOS")
        #endif
        let result = ProcessResult(arguments: [],
                                   environmentBlock: [:],
                                   exitStatus: .terminated(code: 0),
                                   output: "some string".asResult,
                                   stderrOutput: "".asResult)

        XCTAssertThrowsError(try MinimumDeploymentTarget.computeXCTestMinimumDeploymentTarget(with: result, platform: .macOS))
    }

    func testThrowsWithErrorForOutput() throws {
        #if !os(macOS)
        // these tests eventually call `xcrun`.
        try XCTSkipIf(true, "test is only supported on macOS")
        #endif
        let result = ProcessResult(arguments: [],
                                   environmentBlock: [:],
                                   exitStatus: .terminated(code: 0),
                                   output: .failure(DummyError()),
                                   stderrOutput: "".asResult)

        XCTAssertThrowsError(try MinimumDeploymentTarget.computeXCTestMinimumDeploymentTarget(with: result, platform: .macOS))
    }
}

private struct DummyError: Error {
}

private extension String {
    var asResult: Result<[UInt8], Error> {
        return .success(Array(utf8))
    }
}