local beholder = require 'beholder'


describe("Acceptance", function()

  before(function()
    beholder:reset()
  end)

  test("Normal behavior", function()

    local counter = 0

    local id = beholder:observe("EVENT", function() counter = counter + 1 end)

    beholder:trigger("EVENT")
    beholder:trigger("EVENT")

    assert_equal(counter, 2)

    beholder:stopObserving(id)

    beholder:trigger("EVENT")

    assert_equal(counter, 2)

  end)

  test("several actions on the same event", function()

    local counter1, counter2 = 0,0

    local id1 = beholder:observe("EVENT", function() counter1 = counter1 + 1 end)
    local id2 = beholder:observe("EVENT", function() counter2 = counter2 + 1 end)

    beholder:trigger("EVENT")
    beholder:trigger("EVENT")

    assert_equal(counter1, 2)
    assert_equal(counter2, 2)

    beholder:stopObserving(id1)

    beholder:trigger("EVENT")
    assert_equal(counter1, 2)
    assert_equal(counter2, 3)

    beholder:stopObserving(id2)

    beholder:trigger("EVENT")
    assert_equal(counter1, 2)
    assert_equal(counter2, 3)

  end)

  test("composed events", function()
    local counter = 0
    local lastKey = ""
    local enterPressed = false
    local escapePressed = false

    beholder:observe("KEYPRESS", function() counter = counter + 1 end)
    beholder:observe("KEYPRESS", function(key) lastKey = key end)
    beholder:observe("KEYPRESS", "enter", function() enterPressed = true end)

    beholder:trigger("KEYPRESS", "space")
    assert_equal(counter, 1)
    assert_equal(lastKey, "space")
    assert_false(enterPressed)
    assert_false(escapePressed)

    beholder:trigger("KEYPRESS", "enter")
    assert_equal(counter, 2)
    assert_equal(lastKey, "enter")
    assert_true(enterPressed)
    assert_false(escapePressed)
  end)

  test("nil events", function()
    local counter = 0

    local id = beholder:observe(function(_, x) counter = counter + x end)

    beholder:trigger("FOO", 1)
    beholder:trigger("BAR", 2)

    assert_equal(3, counter)

    beholder:stopObserving(id)

    beholder:observe("BAZ", function() counter = counter + 1 end)
    beholder:trigger()

    assert_equal(4, counter)

  end)


end)