altwalker-graph-data-demo

A simple example of an AltWalker project that updates the graph data from the test code.

Overview

This example showcases how you can update you graph data (model data) in order to influence the path generation.

Basically we have a node from witch we want to go.

Note:

This method doesn't works with the offline command because it generates all steps before the execution of the test code.

This method only works with the online command, where only one step from the path is generated at a time and then executed.

Fist we will initialize a variable number inside the action section of the model with a default value:

"actions": [
    "number = 0;"
]

Fist we will add a guard.

"guard": "number > 0.5"

In order to update the graph data from your tests, you need to define the method with a parameter, and AltWalker will pass the graph data to your method. This method is a way of executing actions from you test code.

Then in the method corresponding with our branching vertex will add:

def v_start(self, data):
    data['number'] = random.random()

Setup

You can find the AltWalker setup guide here.

Running the tests

$ altwalker online tests -m models/default.json "random(vertex_coverage(100))"

License

This project is licensed under the MIT License.