Files

129 lines
4.4 KiB
Swift

#if canImport(Combine)
import Combine
import Foundation
import XCTest
final class Test<Context> {
// Raise the repeatCount in order to help spotting flaky tests.
private let repeatCount: Int
private let test: (Context, Int) throws -> ()
init(repeatCount: Int = 1, _ test: @escaping (Context) throws -> ()) {
self.repeatCount = repeatCount
self.test = { context, _ in try test(context) }
}
init(repeatCount: Int, _ test: @escaping (Context, Int) throws -> ()) {
self.repeatCount = repeatCount
self.test = test
}
@discardableResult
func run(context: () throws -> Context) throws -> Self {
for i in 1...repeatCount {
try test(context(), i)
}
return self
}
@discardableResult
func runInTemporaryDirectory(context: (_ directoryURL: URL) throws -> Context) throws -> Self {
for i in 1...repeatCount {
let directoryURL = URL(fileURLWithPath: NSTemporaryDirectory())
.appendingPathComponent("GRDB", isDirectory: true)
.appendingPathComponent(ProcessInfo.processInfo.globallyUniqueString, isDirectory: true)
try FileManager.default.createDirectory(at: directoryURL, withIntermediateDirectories: true, attributes: nil)
defer {
try! FileManager.default.removeItem(at: directoryURL)
}
try test(context(directoryURL), i)
}
return self
}
@discardableResult
func runAtTemporaryDatabasePath(context: (_ path: String) throws -> Context) throws -> Self {
try runInTemporaryDirectory { url in
try context(url.appendingPathComponent("db.sqlite").path)
}
}
}
@available(iOS 13, macOS 10.15, tvOS 13, watchOS 6, *)
final class AsyncTest<Context> {
// Raise the repeatCount in order to help spotting flaky tests.
private let repeatCount: Int
private let test: (Context, Int) async throws -> ()
init(repeatCount: Int = 1, _ test: @escaping (Context) async throws -> ()) {
self.repeatCount = repeatCount
self.test = { context, _ in try await test(context) }
}
init(repeatCount: Int, _ test: @escaping (Context, Int) async throws -> ()) {
self.repeatCount = repeatCount
self.test = test
}
@discardableResult
func run(context: () async throws -> Context) async throws -> Self {
for i in 1...repeatCount {
try await test(context(), i)
}
return self
}
@discardableResult
func runInTemporaryDirectory(context: (_ directoryURL: URL) async throws -> Context) async throws -> Self {
for i in 1...repeatCount {
let directoryURL = URL(fileURLWithPath: NSTemporaryDirectory())
.appendingPathComponent("GRDB", isDirectory: true)
.appendingPathComponent(ProcessInfo.processInfo.globallyUniqueString, isDirectory: true)
try FileManager.default.createDirectory(at: directoryURL, withIntermediateDirectories: true, attributes: nil)
defer {
try! FileManager.default.removeItem(at: directoryURL)
}
try await test(context(directoryURL), i)
}
return self
}
@discardableResult
func runAtTemporaryDatabasePath(context: (_ path: String) async throws -> Context) async throws -> Self {
try await runInTemporaryDirectory { url in
try await context(url.appendingPathComponent("db.sqlite").path)
}
}
}
@available(iOS 13, macOS 10.15, tvOS 13, watchOS 6, *)
public func assertNoFailure<Failure>(
_ completion: Subscribers.Completion<Failure>,
file: StaticString = #file,
line: UInt = #line)
{
if case let .failure(error) = completion {
XCTFail("Unexpected completion failure: \(error)", file: file, line: line)
}
}
@available(iOS 13, macOS 10.15, tvOS 13, watchOS 6, *)
public func assertFailure<Failure, ExpectedFailure>(
_ completion: Subscribers.Completion<Failure>,
file: StaticString = #file,
line: UInt = #line,
test: (ExpectedFailure) -> Void)
{
if case let .failure(error) = completion, let expectedError = error as? ExpectedFailure {
test(expectedError)
} else {
XCTFail("Expected \(ExpectedFailure.self), got \(completion)", file: file, line: line)
}
}
#endif