Feature: Long Flash

Long flashes (Lfl) are light for two seconds or more

Scenario Outline: Long Flash Period <character>

The period of a flashing characteristic is the total time of the sequence.

A long flash is 2 seconds long, so the dark period is two seconds shorter than the total period.

When I request an image with the characteristic <character>

Then the first frame is <colour> for 2 seconds

And the next frame is transparent for <dark_period> seconds

Examples:

character	colour	dark_period
L.Fl W 5	white	3
L.Fl R 10	red	8
L.Fl G 7	green	5
L.Fl Y 8	yellow	6