#moonspec

#Installation

moon add moonrockz/moonspec

#Quick Start

struct CalcWorld {
  mut result : Int
} derive(Default)

impl @moonspec.World for CalcWorld with register_steps(self, s) {
  s.given("a calculator", fn(_args) { self.result = 0 })
  s.when("I add {int} and {int}", fn(args) {
    match (args[0], args[1]) {
      (@moonspec.StepArg::IntArg(a), @moonspec.StepArg::IntArg(b)) => self.result = a + b
      _ => ()
    }
  })
  s.then("the result should be {int}", fn(args) raise {
    match args[0] {
      @moonspec.StepArg::IntArg(expected) => assert_eq(self.result, expected)
      _ => ()
    }
  })
}

async test "calculator" {
  let feature =
    #|Feature: Calculator
    #|
    #|  Scenario: Addition
    #|    Given a calculator
    #|    When I add 2 and 3
    #|    Then the result should be 5
  let result = @moonspec.run(
    CalcWorld::default,
    [@moonspec.FeatureSource::Text("test://calculator", feature)],
  )
  assert_eq(result.summary.passed, 1)
}

#Features

• World trait -- per-scenario state isolation following cucumber-rs patterns
• Lifecycle hooks -- before_scenario, after_scenario, before_step, after_step
• Gherkin parsing -- Feature, Scenario, Scenario Outline, Background, Rules, Data Tables, Doc Strings
• Cucumber Expressions -- type-safe step matching with {int}, {float}, {string}, {word}
• Tag filtering -- boolean tag expressions (@smoke and not @slow)
• Scenario Outline expansion -- parameterized scenarios from Examples tables
• Background steps -- shared Given setup across scenarios
• Async/parallel execution -- concurrent feature processing with bounded concurrency
• Codegen -- generate _test.mbt runner tests from .feature files
• Formatters -- Pretty (console), Cucumber Messages (NDJSON), JUnit XML (CI)

#Packages

#Documentation

#License