local positionedClass = lib "class" ("TestPosition")

positionedClass:include(mixin "Position")

TestPosition = {}
function TestPosition:setUp()
    self.instance = positionedClass:new()
end

function TestPosition:testGetXFailsIfNoValue()
    assertError(function() self.instance:getX() end)
end

function TestPosition:testGetPositionFailsIfOneCoordinateMissing()
    self.instance:setX(0)
    self.instance:setY(0)
    self.instance:setPosition(0, 0, nil)
    assertError(function() self.instance:getPosition() end)
end

function TestPosition:testGetX()
    local x = 2.0
    self.instance:setX(x)
    assertEquals(self.instance:getX(), x)

    local y = 4.0
    self.instance:setPosition(x, y, 0)
    assertEquals(self.instance:getY(), 4.0)
end