sabirvirtuoso/Kraken

//
//  Kraken
//
//  Copyright (c) 2016 Syed Sabir Salman-Al-Musawi <sabirvirtuoso@gmail.com>
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.
//

import XCTest
@testable import Kraken

private protocol Service: Injectable {
    var name: String! { get }
}

private class ServiceImp: Service {

    var name: String!

    required init() {
    }

    init(name: String, baseURL: String, port: Int) {
        self.name = name
    }

}

private class ServiceImp1: Service {
    let name: String! = "ServiceImp1"

    required init() {
    }
}

private class ServiceImp2: Service {
    let name: String! = "ServiceImp2"

    required init() {
    }
}

class RuntimeArgumentsTests: XCTestCase {

    override func setUp() {
        Kraken.reset()
    }

    func testThatItResolvesInstanceWithoutTagWithNoArgument() {
        // given
        Kraken.register(Service.self, factory: { ServiceImp1() as Service })

        // when
        let service: Service = inject(Service.self)

        // then
        XCTAssertTrue(service is ServiceImp1)
    }

    func testThatItResolvesInstanceWithTagWithNoArgument() {
        // given
        Kraken.register(Service.self, tag: ServiceTypeString.Normal, factory: { ServiceImp1() as Service })
        Kraken.register(Service.self, tag: ServiceTypeString.VIP, factory: { ServiceImp2() as Service })

        // when
        let serviceOne: Service = inject(Service.self, tag: ServiceTypeString.Normal)

        // then
        XCTAssertTrue(serviceOne is ServiceImp1)

        // and when
        let serviceTwo: Service = inject(Service.self, tag: ServiceTypeString.VIP)

        // then
        XCTAssertTrue(serviceTwo is ServiceImp2)
    }

    func testThatItResolvesInstanceWithoutTagWithOneArgument() {
        // given
        let arg1 = 1

        try! Kraken.register(Service.self) { (a1: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)

            return ServiceImp1() as Service
        }

        // when
        let service: Service = inject(Service.self, withArguments: arg1)

        // then
        XCTAssertTrue(service is ServiceImp1)
    }

    func testThatItResolvesInstanceWithTagWithOneArgument() {
        // given
        let arg1 = 1

        try! Kraken.register(Service.self, tag: ServiceTypeNumber.Normal) { (a1: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)

            return ServiceImp1() as Service
        }

        try! Kraken.register(Service.self, tag: ServiceTypeNumber.VIP) { (a1: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)

            return ServiceImp2() as Service
        }

        // when
        let serviceOne: Service = inject(Service.self, tag: ServiceTypeNumber.Normal, withArguments: arg1)

        // then
        XCTAssertTrue(serviceOne is ServiceImp1)

        // and when
        let serviceTwo: Service = inject(Service.self, tag: ServiceTypeNumber.VIP, withArguments: arg1)

        // then
        XCTAssertTrue(serviceTwo is ServiceImp2)
    }

    func testThatItResolvesInstanceWithoutTagWithTwoArguments() {
        // given
        let arg1 = 1, arg2 = 2

        try! Kraken.register(Service.self) { (a1: Int, a2: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)
            XCTAssertEqual(a2, arg2)

            return ServiceImp1() as Service
        }

        // when
        let service: Service = inject(Service.self, withArguments: arg1, arg2)

        // then
        XCTAssertTrue(service is ServiceImp1)
    }

    func testThatItResolvesInstanceWithTagWithTwoArguments() {
        // given
        let arg1 = 1, arg2 = 2

        try! Kraken.register(Service.self, tag: ServiceTypeString.Normal) { (a1: Int, a2: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)
            XCTAssertEqual(a2, arg2)

            return ServiceImp1() as Service
        }

        try! Kraken.register(Service.self, tag: ServiceTypeString.VIP) { (a1: Int, a2: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)
            XCTAssertEqual(a2, arg2)

            return ServiceImp2() as Service
        }

        // when
        let serviceOne: Service = inject(Service.self, tag: ServiceTypeString.Normal, withArguments: arg1, arg2)

        // then
        XCTAssertTrue(serviceOne is ServiceImp1)

        // and when
        let serviceTwo: Service = inject(Service.self, tag: ServiceTypeString.VIP, withArguments: arg1, arg2)

        // then
        XCTAssertTrue(serviceTwo is ServiceImp2)
    }

    func testThatItResolvesInstanceWithoutTagWithThreeArguments() {
        // given
        let arg1 = 1, arg2 = 2, arg3 = 3

        try! Kraken.register(Service.self) { (a1: Int, a2: Int, a3: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)
            XCTAssertEqual(a2, arg2)
            XCTAssertEqual(a3, arg3)

            return ServiceImp1() as Service
        }

        // when
        let service: Service = inject(Service.self, withArguments: arg1, arg2, arg3)

        // then
        XCTAssertTrue(service is ServiceImp1)
    }

    func testThatItResolvesInstanceWithTagWithThreeArguments() {
        // given
        let arg1 = 1, arg2 = 2, arg3 = 3

        try! Kraken.register(Service.self, tag: ServiceTypeNumber.Normal) { (a1: Int, a2: Int, a3: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)
            XCTAssertEqual(a2, arg2)
            XCTAssertEqual(a3, arg3)

            return ServiceImp1() as Service
        }

        try! Kraken.register(Service.self, tag: ServiceTypeNumber.VIP) { (a1: Int, a2: Int, a3: Int) -> Injectable in
            XCTAssertEqual(a1, arg1)
            XCTAssertEqual(a2, arg2)
            XCTAssertEqual(a3, arg3)

            return ServiceImp2() as Service
        }

        // when
        let serviceOne: Service = inject(Service.self, tag: ServiceTypeNumber.Normal, withArguments: arg1, arg2, arg3)

        // then
        XCTAssertTrue(serviceOne is ServiceImp1)

        // and when
        let serviceTwo: Service = inject(Service.self, tag: ServiceTypeNumber.VIP, withArguments: arg1, arg2, arg3)

        // then
        XCTAssertTrue(serviceTwo is ServiceImp2)
    }

    func testThatItThrowsErrorIfFactoryIsNotRegisteredForDefinitionWithRuntimeArguments() {
        // given
        let arg1 = 1

        Kraken.register(Service.self, implementation: ServiceImp1())

        // when
        AssertThrows(expression: try Kraken.inject(Service.self, withArguments: arg1)) { error in
            guard case let KrakenError.factoryNotFound(key) = error else {
                return false
            }

            // then
            let expectedKey = String(describing: Service.self)
            XCTAssertEqual(key, expectedKey)

            return true
        }
    }

    func testThatItThrowsErrorIfNumberOfArgumentsAtRuntimeMismatchesThatOfRegisteredFactory() {
        // given
        let arg1 = 1, arg2 = "string"

        try! Kraken.register(Service.self) { (a1: Int) -> Injectable in
            ServiceImp1() as Service
        }

        // when
        AssertThrows(expression: try Kraken.inject(Service.self, withArguments: arg1, arg2)) { error in
            guard case let KrakenError.argumentCountNotMatched(key) = error else {
                return false
            }

            // then
            let expectedKey = String(describing: Service.self)
            XCTAssertEqual(key, expectedKey)

            return true
        }
    }

}