Function assertFact

test/engine.test.js:242–245

(engine)

    const FACT_VALUE = 'FACT_VALUE'

    function assertFact (engine) {
      expect(engine.facts.size).to.equal(1)
      expect(engine.facts.has(FACT_NAME)).to.be.true()
    }

    it('allows a constant fact', () => {
      engine.addFact(FACT_NAME, FACT_VALUE)