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add directions guide

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Moritz Kobitzsch 2016-06-02 11:50:22 +02:00 committed by Patrick Niklaus
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@ -132,6 +132,34 @@ Scenario: Testbot - Straight Road
| a | d | road,road,road | depart,continue right,arrive | | a | d | road,road,road | depart,continue right,arrive |
``` ```
### Test all directions
Modelling a road as roundabout has an implied oneway tag associated with it. In the following case, we can route from `a` to `d` but not from `d` to `a`.
To discover those errors, make sure to check for all allowed directions.
```
Scenario: Enter and Exit mini roundabout with sharp angle # features/guidance/mini-roundabout.feature:37
Given the profile "car" # features/step_definitions/data.js:8
Given a grid size of 10 meters # features/step_definitions/data.js:20
Given the node map # features/step_definitions/data.js:45
| a | b | |
| | c | d |
And the ways # features/step_definitions/data.js:128
| nodes | highway | name |
| ab | tertiary | MySt |
| bc | roundabout | |
| cd | tertiary | MySt |
When I route I should get # features/step_definitions/routing.js:4
| from | to | route | turns | # |
| a | d | MySt,MySt | depart,arrive | # suppress multiple enter/exit mini roundabouts |
| d | a | MySt,MySt | depart,arrive | # suppress multiple enter/exit mini roundabouts |
Tables were not identical:
| from | to | route | turns | #
| a | d | MySt,MySt | depart,arrive | # suppress multiple enter/exit mini roundabouts |
| (-) d | (-) a | (-) MySt,MySt | (-) depart,arrive | (-) # suppress multiple enter/exit mini roundabouts |
| (+) d | (+) a | (+) | (+) | (+) # suppress multiple enter/exit mini roundabouts |
```
### Prevent Randomness ### Prevent Randomness
Some features in OSRM can result in strange experiences during testcases. To prevent some of these issues, follow the guidelines below. Some features in OSRM can result in strange experiences during testcases. To prevent some of these issues, follow the guidelines below.