test/stdlib/TestFileManager.swift

// Copyright (c) 2016 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
//
//===----------------------------------------------------------------------===//
//
// RUN: rm -rf %t
// RUN: mkdir -p %t
//
// RUN: %target-clang %S/Inputs/FoundationBridge/FoundationBridge.m -c -o %t/FoundationBridgeObjC.o -g
// RUN: %target-build-swift %s -I %S/Inputs/FoundationBridge/ -Xlinker %t/FoundationBridgeObjC.o -o %t/TestFileManager

// RUN: %target-run %t/TestFileManager > %t.txt
// REQUIRES: executable_test
// REQUIRES: objc_interop

import Foundation

#if FOUNDATION_XCTEST
import XCTest
class TestFileManagerSuper : XCTestCase { }
#else
import StdlibUnittest
class TestFileManagerSuper { }
#endif

class TestFileManager : TestFileManagerSuper {
    func testReplaceItem() {
        let fm = FileManager.default
        
        // Temporary directory
        let dirPath = (NSTemporaryDirectory() as NSString).appendingPathComponent(NSUUID().uuidString)
        try! fm.createDirectory(atPath: dirPath, withIntermediateDirectories: true, attributes: nil)
        defer { try! FileManager.default.removeItem(atPath: dirPath) }
        
        let filePath = (dirPath as NSString).appendingPathComponent("temp_file")
        try! "1".write(toFile: filePath, atomically: true, encoding: String.Encoding.utf8)
        
        let newItemPath = (dirPath as NSString).appendingPathComponent("temp_file_new")
        try! "2".write(toFile: newItemPath, atomically: true, encoding: String.Encoding.utf8)
        
        let result = try! fm.replaceItemAt(URL(fileURLWithPath:filePath, isDirectory:false), withItemAt:URL(fileURLWithPath:newItemPath, isDirectory:false))
        expectEqual(result!.path, filePath)
        
        let fromDisk = try! String(contentsOf: URL(fileURLWithPath:filePath, isDirectory:false), encoding: String.Encoding.utf8)
        expectEqual(fromDisk, "2")

    }
    
    func testReplaceItem_error() {
        let fm = FileManager.default
        
        // Temporary directory
        let dirPath = (NSTemporaryDirectory() as NSString).appendingPathComponent(NSUUID().uuidString)
        try! fm.createDirectory(atPath: dirPath, withIntermediateDirectories: true, attributes: nil)
        defer { try! FileManager.default.removeItem(atPath: dirPath) }
        
        let filePath = (dirPath as NSString).appendingPathComponent("temp_file")
        try! "1".write(toFile: filePath, atomically: true, encoding: String.Encoding.utf8)
        
        let newItemPath = (dirPath as NSString).appendingPathComponent("temp_file_new")
        // Don't write the file.
        
        var threw = false
        do {
            let _ = try fm.replaceItemAt(URL(fileURLWithPath:filePath, isDirectory:false), withItemAt:URL(fileURLWithPath:newItemPath, isDirectory:false))
        } catch {
            threw = true
        }
        expectTrue(threw, "Should have thrown")

    }
}

#if !FOUNDATION_XCTEST
var FMTests = TestSuite("TestFileManager")
FMTests.test("testReplaceItem") { TestFileManager().testReplaceItem() }
FMTests.test("testReplaceItem_error") { TestFileManager().testReplaceItem_error() }

runAllTests()
#endif