Test Generation

Get started.

git clone https://github.com/CSC-DevOps/TestGeneration.git
cd TestGeneration
npm install

Getting a simple coverage report

Useful resource for istanbul.

You can run the local version as follows:

node_modules/.bin/istanbul cover test.js
node_module\.bin\istanbul cover test.js (Windows)

To install istanbul globally, saving some keystrokes, you can do the following:

npm install istanbul -G

You'll get a high level report as follows (a more detailed report will be stored in coverage/):

=============================== Coverage summary ===============================

Statements   : 80% ( 4/5 )
Branches     : 50% ( 1/2 )
Functions    : 100% ( 1/1 )
Lines        : 100% ( 4/4 )
================================================================================

Test Generation with Constraints and Mocking

Run node main.js to generate test.js. The code under test is subject.js.

• 1. Use the mock-fs framework to generate a fake file system to help improve coverage.
• 2. Use the faker framework to generate a fake phone number to help improve coverage.
• 3. Extend the constraint discovery code to handle > and <.
• 4. Use clues in the code to automate the process of including file system, phone number mocking without manual injection.

faker.js docs, mock-fs docs

You can see a better visualization of the results here:

open coverage/lcov-report/TestGeneration/subject.js.html

Test Generation in Java

Download randoop:

wget https://randoop.googlecode.com/files/randoop.1.3.4.jar

Sample execution to generate tests for all classes in the java.util.Collections namespace (Need Java 7):

java -classpath randoop.1.3.4.jar randoop.main.Main gentests --testclass=java.util.TreeSet --testclass=java.util.Collections --timelimit=60

This will create a file RandoopTest.java, which contains a test driver, and RandoopTest0.java, which contains the generated unit tests.

Coverage in Java

Emma is a decent option to collect coverage information form a java program.