aaronbrethorst/Spectre

BDD Framework and test runner for Swift projects and playgrounds

Spectre

Special Executive for Command-line Test Running and Execution.

A behavior-driven development (BDD) framework and test runner for Swift projects and playgrounds. It's compatible with both OS X and Linux.

Usage

describe("a person") {
  let person = Person(name: "Kyle")

  $0.it("has a name") {
    try expect(person.name) == "Kyle"
  }

  $0.it("returns the name as description") {
    try expect(person.description) == "Kyle"
  }
}

Reporters

Spectre currently has two built-in reporters, Standard and the Dot reporter. Custom reporters are supported, simply make a type that conforms to Reporter.

• Standard
• Dot Reporter (-t)
• Tap Reporter (--tap) - Test Anything Protocol-compatible output

Standard

The standard reporter produces output as follows:

Passing Tests

Failing Tests

Dot

Using the -t argument, you can use the dot reporter.

Passing Tests

Failing Tests

Expectation

Equivalence

try expect(name) == "Kyle"
try expect(name) != "Kyle"

Truthiness

try expect(alive).to.beTrue()
try expect(alive).to.beFalse()
try expect(alive).to.beNil()

Error handling

try expect(try write()).toThrow()
try expect(try write()).toThrow(FileError.NoPermission)

Comparable

try expect(5) > 2
try expect(5) >= 2
try expect(5) < 10
try expect(5) <= 10

Types

try expect("kyle").to.beOfType(String.self)

Causing a failure

throw failure("Everything is broken.")

Custom assertions

You can easily provide your own assertions, you just need to throw a failure when the assertion does not meet expectaions.

Examples

The following projects use Spectre:

Project	CI
Stencil
Inquiline
CardKit	N/A

Installation / Running

SPM

Check out spectre-build.

Conche

Conche build system has integrated support for Spectre. You can simply add a test_spec to your Conche podspec depending on Spectre and it will run your tests with conche test.

Playground

You can use Spectre in an Xcode Playground, open Spectre.playground in this repository, failures are printed in the console.

Manually

You can build Spectre as a Framework or a library and link against it.

For example, if you clone Spectre and run make it will build a library you can link against:

$ swiftc -I .conche/modules -L .conche/lib -lSpectre -o runner myTests.swift
$ ./runner