87 lines
3.0 KiB
Swift
87 lines
3.0 KiB
Swift
// Copyright (c) 2021 Spotify AB.
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//
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// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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@testable import XCRemoteCache
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import XCTest
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class LazyFileAccessorTests: FileXCTestCase {
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private var storage: FileAccessorFake!
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private var accessor: LazyFileAccessor!
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private let content1 = "1".data(using: .utf8)
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private let content2 = "2".data(using: .utf8)
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private let path = "samplePath"
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override func setUp() {
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super.setUp()
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storage = FileAccessorFake(mode: .normal)
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accessor = LazyFileAccessor(fileAccessor: storage)
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}
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func testWritingSucceeds() throws {
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try accessor.write(toPath: path, contents: content1)
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try XCTAssertEqual(storage.contents(atPath: path), content1)
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}
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func testWritingOtherContentSucceeds() throws {
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try accessor.write(toPath: path, contents: content1)
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try accessor.write(toPath: path, contents: content2)
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try XCTAssertEqual(storage.contents(atPath: path), content2)
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}
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func testOverwritingEmptyFileSucceeds() throws {
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try accessor.write(toPath: path, contents: nil)
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try accessor.write(toPath: path, contents: content1)
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try XCTAssertEqual(storage.contents(atPath: path), content1)
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}
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func testWritingIsSkippedForTheSameContent() throws {
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try accessor.write(toPath: path, contents: content1)
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let writeMDate = try storage.fileMDate(atPath: path).unwrap()
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try accessor.write(toPath: path, contents: content1)
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let secondWriteMDate = try storage.fileMDate(atPath: path).unwrap()
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XCTAssertEqual(secondWriteMDate, writeMDate)
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}
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func testWritingTheSameContentDoesntModifyDiskINode() throws {
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func getINode(_ file: URL) -> Int {
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var info = stat()
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stat(file.path, &info)
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return Int(info.st_ino)
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}
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let accessor = LazyFileAccessor(fileAccessor: FileManager.default)
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let file = try prepareTempDir().appendingPathComponent("path")
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try accessor.write(toPath: file.path, contents: content1)
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let originalINode = getINode(file)
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try accessor.write(toPath: file.path, contents: content1)
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let postINode = getINode(file)
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XCTAssertNotEqual(postINode, 0)
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XCTAssertEqual(postINode, originalINode)
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}
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}
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