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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift open source project
//
// Copyright (c) 2021 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 Basics
import SPMTestSupport
import tsan_utils
import XCTest
final class SQLiteBackedCacheTests: XCTestCase {
func testHappyCase() throws {
try testWithTemporaryDirectory { tmpPath in
let path = tmpPath.appending("test.db")
let cache = SQLiteBackedCache<String>(tableName: "SQLiteBackedCacheTest", path: path)
defer { XCTAssertNoThrow(try cache.close()) }
let mockData = try makeMockData(fileSystem: localFileSystem, rootPath: tmpPath)
try mockData.forEach { key, value in
_ = try cache.put(key: key, value: value)
}
try mockData.forEach { key, _ in
let result = try cache.get(key: key)
XCTAssertEqual(mockData[key], result)
}
let key = mockData.first!.key
_ = try cache.put(key: key, value: "foobar", replace: false)
XCTAssertEqual(mockData[key], try cache.get(key: key))
_ = try cache.put(key: key, value: "foobar", replace: true)
XCTAssertEqual("foobar", try cache.get(key: key))
try cache.remove(key: key)
XCTAssertNil(try cache.get(key: key))
guard case .path(let cachePath) = cache.location else {
return XCTFail("invalid location \(cache.location)")
}
XCTAssertTrue(cache.fileSystem.exists(cachePath), "expected file to be written")
}
}
func testFileDeleted() throws {
#if os(Windows)
try XCTSkipIf(true, "open file cannot be deleted on Windows")
#endif
try XCTSkipIf(is_tsan_enabled())
try testWithTemporaryDirectory { tmpPath in
let path = tmpPath.appending("test.db")
let cache = SQLiteBackedCache<String>(tableName: "SQLiteBackedCacheTest", path: path)
defer { XCTAssertNoThrow(try cache.close()) }
let mockData = try makeMockData(fileSystem: localFileSystem, rootPath: tmpPath)
try mockData.forEach { key, value in
_ = try cache.put(key: key, value: value)
}
try mockData.forEach { key, _ in
let result = try cache.get(key: key)
XCTAssertEqual(mockData[key], result)
}
guard case .path(let cachePath) = cache.location else {
return XCTFail("invalid location \(cache.location)")
}
XCTAssertTrue(cache.fileSystem.exists(cachePath), "expected file to exist at \(cachePath)")
try cache.fileSystem.removeFileTree(cachePath)
let key = mockData.first!.key
do {
let result = try cache.get(key: key)
XCTAssertNil(result)
}
do {
XCTAssertNoThrow(try cache.put(key: key, value: mockData[key]!))
let result = try cache.get(key: key)
XCTAssertEqual(mockData[key], result)
}
XCTAssertTrue(cache.fileSystem.exists(cachePath), "expected file to exist at \(cachePath)")
}
}
func testFileCorrupt() throws {
try XCTSkipIf(is_tsan_enabled())
try testWithTemporaryDirectory { tmpPath in
let path = tmpPath.appending("test.db")
let cache = SQLiteBackedCache<String>(tableName: "SQLiteBackedCacheTest", path: path)
defer { XCTAssertNoThrow(try cache.close()) }
let mockData = try makeMockData(fileSystem: localFileSystem, rootPath: tmpPath)
try mockData.forEach { key, value in
_ = try cache.put(key: key, value: value)
}
try mockData.forEach { key, _ in
let result = try cache.get(key: key)
XCTAssertEqual(mockData[key], result)
}
guard case .path(let cachePath) = cache.location else {
return XCTFail("invalid location \(cache.location)")
}
try cache.close()
XCTAssertTrue(cache.fileSystem.exists(cachePath), "expected file to exist at \(path)")
try cache.fileSystem.writeFileContents(cachePath, string: "blah")
XCTAssertThrowsError(try cache.get(key: mockData.first!.key), "expected error") { error in
XCTAssert("\(error)".contains("is not a database"), "Expected file is not a database error")
}
XCTAssertThrowsError(try cache.put(key: mockData.first!.key, value: mockData.first!.value), "expected error") { error in
XCTAssert("\(error)".contains("is not a database"), "Expected file is not a database error")
}
}
}
func testMaxSizeNotHandled() throws {
try testWithTemporaryDirectory { tmpPath in
let path = tmpPath.appending("test.db")
var configuration = SQLiteBackedCacheConfiguration()
configuration.maxSizeInBytes = 1024 * 3
configuration.truncateWhenFull = false
let cache = SQLiteBackedCache<String>(tableName: "SQLiteBackedCacheTest", path: path, configuration: configuration)
defer { XCTAssertNoThrow(try cache.close()) }
func create() throws {
let mockData = try makeMockData(fileSystem: localFileSystem, rootPath: tmpPath, count: 500)
try mockData.forEach { key, value in
_ = try cache.put(key: key, value: value)
}
}
XCTAssertThrowsError(try create(), "expected error") { error in
XCTAssertEqual(error as? SQLite.Errors, .databaseFull, "Expected 'databaseFull' error")
}
}
}
func testMaxSizeHandled() throws {
try testWithTemporaryDirectory { tmpPath in
let path = tmpPath.appending("test.db")
var configuration = SQLiteBackedCacheConfiguration()
configuration.maxSizeInBytes = 1024 * 3
configuration.truncateWhenFull = true
let cache = SQLiteBackedCache<String>(tableName: "SQLiteBackedCacheTest", path: path, configuration: configuration)
defer { XCTAssertNoThrow(try cache.close()) }
var keys = [String]()
let mockData = try makeMockData(fileSystem: localFileSystem, rootPath: tmpPath, count: 500)
try mockData.forEach { key, value in
_ = try cache.put(key: key, value: value)
keys.append(key)
}
do {
let result = try cache.get(key: mockData.first!.key)
XCTAssertNil(result)
}
do {
let result = try cache.get(key: keys.last!)
XCTAssertEqual(mockData[keys.last!], result)
}
}
}
}
private func makeMockData(fileSystem: FileSystem, rootPath: AbsolutePath, count: Int = Int.random(in: 50 ..< 100)) throws -> [String: String] {
var data = [String: String]()
let value = UUID().uuidString
for index in 0 ..< count {
data["\(index)"] = "\(index) \(value)"
}
return data
}
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