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Spek is a lightweight function builder style Behavior Driven Development framework, designed to be used with XCTest

⚠️Before using any test frameworks, you need to ensure there is XCTest framework in your test target.

import XCTest
@testable import Spek

final class SpekTests: XCTestCase {
    func testExample() {
        var left = 1
        var right = 1

        spec {
            Describe("math") {
                BeforeEach {
                    left = 2
                }

                Describe("basic") {
                    BeforeEach {
                        right = 3
                    }

                    AfterEach {

                    }

                    It("adds correctly") {
                        XCTAssertEqual(left + right, 5)
                    }

                    It("multiplies correctly") {
                        XCTAssertEqual(left * right, 6)
                    }
                }
            }
        }
    }
}

• Support common BDD parts: Describe, Context, BeforeAll, AfterAll, BeforeEach, AfterEach, It
• To disable a part, prefix it with X, for example XDescribe, XIt, ...
• All blocks are throwing function, so are encouraged to do try catch
• BeforeAll and AfterAll are run before and after all enclosing Describe and It
• BeforeEach and AfterEach are run before and after all enclosing It
• Context behaves the same as Describe

When you have an imcomplete block, instead of commenting it out, you can prefix it with X so it won't be executed

Describe("math") {
    It("will be run") {

    }

    XIt("won't be run") {

    }
}

Spek uses Swift 5.1 function builder so you can only declare block and nested block. To declare local variables in a subspec, you need to use Sub and return Describe explicitly

Describe("math") {
    Describe("advanced") {

    }

    Sub {
        let abc = 1
        let def = 2
        return Describe("extra") {
            It("should add") {
                XCTAssertEqual(abc + def, 2)
            }
        }
    }
}

By default, spec method runs the test directly, to generate test cases, you need to override makeDescribe.

Subclass SpekTestCase and override makeDescribe method, Spek will convert your Describe descriptions and generate XCTestCase methods. It generates test methods for nested Describe and Sub too.

For example the below test will generate test_math_should_work and test_math_advanced_should_calculate methods

import XCTest
import Spek

class GenerateTestCaseTests: SpekTestCase {
    override class func describe() -> Describe {
        Describe("math") {
            It("should work") {
                XCTAssertTrue(1 + 1 == 2)
            }

            Describe("advanced") {
                It("should calculate") {
                    XCTAssertEqual(2 * 5, 10)
                }
            }
        }
    }
}

Spek is distributed using the Swift Package Manager. To install it into a project, add it as a dependency within your Package.swift manifest:

let package = Package(
    ...
    dependencies: [
        .package(url: "https://github.com/onmyway133/Spek.git", from: "0.5.0")
    ],
    ...
)

Then import Spek in your XCTest

import Spek

Khoa Pham, [email protected]

• Quick for testInvocations reference

Spek is available under the MIT license. See the LICENSE file for more info.