Rubicon
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Swift parser + mock generator
Rubicon generates spys for protocol. Generating methods for parent protocol is not supported.
Example
input:
protocol Car {
var name: String? { get }
var color: Int { get set }
func go()
func load(with stuff: Int, label: String) throws -> Int
func isFull() -> Bool
func download() async throws -> [String]
}
Spy
output:
class CarSpy: Car {
enum SpyError: Error {
case spyError
}
typealias ThrowBlock = () throws -> Void
var name: String?
var color: Int
struct Load {
let stuff: Int
let label: String
}
var goCount = 0
var load = [Load]()
var loadThrowBlock: ThrowBlock?
var loadReturn: Int
var isFullCount = 0
var isFullReturn: Bool
var downloadCount = 0
var downloadThrowBlock: ThrowBlock?
var downloadReturn: [String]
init(color: Int, loadReturn: Int, isFullReturn: Bool, downloadReturn: [String]) {
self.color = color
self.loadReturn = loadReturn
self.isFullReturn = isFullReturn
self.downloadReturn = downloadReturn
}
func go() {
goCount += 1
}
func load(with stuff: Int, label: String) throws -> Int {
let item = Load(stuff: stuff, label: label)
load.append(item)
try loadThrowBlock?()
return loadReturn
}
func isFull() -> Bool {
isFullCount += 1
return isFullReturn
}
func download() async throws -> [String] {
downloadCount += 1
try downloadThrowBlock?()
return downloadReturn
}
}
Mock
output:
class CarStub: Car {
enum StubError: Error {
case stubError
}
typealias ThrowBlock = () throws -> Void
var name: String?
var color: Int
var loadThrowBlock: ThrowBlock?
var loadReturn: Int
var isFullReturn: Bool
var downloadThrowBlock: ThrowBlock?
var downloadReturn: [String]
init(color: Int, loadReturn: Int, isFullReturn: Bool, downloadReturn: [String]) {
self.color = color
self.loadReturn = loadReturn
self.isFullReturn = isFullReturn
self.downloadReturn = downloadReturn
}
func go() {
}
func load(with stuff: Int, label: String) throws -> Int {
try loadThrowBlock?()
return loadReturn
}
func isFull() -> Bool {
return isFullReturn
}
func download() async throws -> [String] {
try downloadThrowBlock?()
return downloadReturn
}
}
Dummy
output:
class CarDummy: Car {
var name: String? {
fatalError()
}
var color: Int {
get {
fatalError()
}
set {
fatalError()
}
}
func go() {
fatalError()
}
func load(with stuff: Int, label: String) throws -> Int {
fatalError()
}
func isFull() -> Bool {
fatalError()
}
func download() async throws -> [String] {
fatalError()
}
}
Usage in tests:
let carSpy = CarSpy()
...
XCTAssertEqual(carSpy.goCount, 1)
XCTAssertEqual(carSpy.load.count, 1)
XCTAssertEqual(carSpy.load[0].stuff, 2)
XCTAssertEqual(carSpy.load[0].label, "name")CLI
Rubicon cli can generate mocks for every protocol in folder. Script runs through every swift file and find every protocol definition. Result is printed at standard out.
example:
$ ./rubicon --spy .
Options:
--mocks path - generates spies (deprecated)
--spy path - generates spies
--stub path - generates stubs
--dummy path - generates dummies
Xcode extension
Xcode extension can generate Spy for every or selected protocol in current file. Spy can be written to source file or pasteboard.