Contents

local conjecture = require('collatz-conjecture')

describe('collatz-conjecture', function()
  it('zero steps for one', function()
    assert.are.equal(0, conjecture(1))
  end)

  it('divide if even', function()
    assert.are.equal(4, conjecture(16))
  end)

  it('even and odd steps', function()
    assert.are.equal(9, conjecture(12))
  end)

  it('large number of even and odd steps', function()
    assert.are.equal(152, conjecture(1000000))
  end)

  it('zero is an error', function()
    assert.has_error(
      function() conjecture(0) end,
      'Only positive numbers are allowed'
    )
  end)

  it('negative value is an error', function()
    assert.has_error(
      function() conjecture(-15) end,
      'Only positive numbers are allowed'
    )
  end)
end)

Version data entries

124 entries across 124 versions & 1 rubygems

Version	Path
trackler-2.2.1.58	tracks/lua/exercises/collatz-conjecture/collatz-conjecture_spec.lua
trackler-2.2.1.57	tracks/lua/exercises/collatz-conjecture/collatz-conjecture_spec.lua
trackler-2.2.1.56	tracks/lua/exercises/collatz-conjecture/collatz-conjecture_spec.lua
trackler-2.2.1.55	tracks/lua/exercises/collatz-conjecture/collatz-conjecture_spec.lua