As the system
I can round down when I compute session durations
So that clients are happy.

Scenario outline: record a session and compute the duration (round down to account accuracy)

Given a tutor Tom logs in
And the client account's accuracy rate is <accuracy>
When he submits a start time of <start> and an end time of <end>
Then the computed time should be <duration> on the sessions page.

Scenarios: .25 accuracy
| accuracy | start  | end    | duration |
| .25      | 1:16   | 2:37   | 1.25     |

Scenarios: .1 accuracy
| accuracy | start  | end    | duration |
| .1       | 1:16   | 2:37   | 1.3      |