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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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docs/testing.md
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@ -132,6 +132,34 @@ Scenario: Testbot - Straight Road
| 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
Some features in OSRM can result in strange experiences during testcases. To prevent some of these issues, follow the guidelines below.