Behaviour Driven Development for C.

hopa-core

hopa-core provides the structure for writing executable examples of how your code should behave, and an hopa command with tools to constrain which examples get run and tailor the output.

Install

echo alias hopa='./hopa/hopa/hopa' >> ~/.bashrc
source ~/.bashrc

Add in project

cd your_project
git clone git@github.com:HopaBDD/hopa.git
hopa init

Basic Structure

Hopa uses the words "describe" and "it" so we can express concepts like a conversation:

"Describe a Modification"
"It must initialize correctly"

source("example_src/module_1.c")
{
    #include "../example_src/module_1.h"
    {
        describe("Modification")
        {
            it("must initialize correctly")
            {
                ModuleOneInit();
                
                ModuleOneGetState() to_eq(MOD_1_VAL);
            }
        }
    }
}

before_each block is called before each it block, and is intended for repetitive actions.

{
    before_each
    {
        printf("Hello\n");
    }

    it("...") {}
    it("...") {}
    it("...") {}
}

Result:

Hello
Hello
Hello

Nested Groups

You can also declare nested groups using the describe or context words:

{
    context("with no items")
    {
        it("behaves one way")
        {
            /*
            ...
            */
        }
    }

    context("with one item")
    {
        it("behaves another way")
        {
            /*
            ...
            */
        }
    }
}

The hopa Command

When you install the hopa-core , it installs the hopa script, which you'll use to run hopa. The hopa command comes with many useful options. Run hopa --help to see the complete list.