code_projects

Code_projects module

Introduction

The code_projects module contains scripts to extract, build and run the code blocks from the ReST files. These are the main scripts:

• extract_projects.py extracts all code blocks and stores into the specified build directory;

• check_projects.py checks each code blocks from the specified build directory;

• check_code_block.py checks a single (previously extracted) code block.

Simple usage

To build and run the source-code examples from a course, just run the extract_projects.py script followed by check_projects.py script. For example, to test the source-code examples from the Introduction to Ada course, run:

python3 py_modules/code_projects/extract_projects.py     \
  --build-dir test_output                                \
  $(find ../content/courses/intro-to-ada/ -name '*.rst')

python3 py_modules/code_projects/check_projects.py      \
  --build-dir test_output

When the extract_projects.py runs, it creates a JSON file called block_info.json for each code block (source-code example) that is extracted from the ReST files. The check_projects.py looks for all block_info.json files in the build directory and checks the source code example described in each of those JSON files.

Verbose mode

All the test script have a --verbose switch. For example:

python3 py_modules/code_projects/extract_projects.py     \
  --verbose                                              \
  --build-dir test_output                                \
  $(find ../content/courses/intro-to-ada/ -name '*.rst')

python3 py_modules/code_projects/check_projects.py       \
  --verbose                                              \
  --build-dir test_output

JSON file: list of extracted projects

It's possible to store the list of extracted projects into a JSON file and use that file for checking the projects. For example, to build the source-code examples from the Introduction to Ada course, run:

python3 py_modules/code_projects/extract_projects.py       \
  --extracted_projects test_output/extracted_projects.json \
  $(find ../content/courses/intro-to-ada/ -name '*.rst')

python3 py_modules/code_projects/check_projects.py         \
  --extracted_projects test_output/extracted_projects.json

To build the source-code examples extracted from a single ReST file:

python3 py_modules/code_projects/extract_projects.py       \
  --extracted_projects test_output/extracted_projects.json \
  ../content/courses/intro-to-ada/chapters/imperative_language.rst

python3 py_modules/code_projects/check_projects.py         \
  --extracted_projects test_output/extracted_projects.json

JSON file and build directory

If only --extracted_projects is specified without --build-dir, then the build directory corresponds to the path to the JSON file. For example, if --extracted_projects test_output/extracted_projects.json is specified, then the build directory is test_output.

To store the JSON file completely separate from the build directory, use both --extracted_projects and --build-dir switches and specify different paths. For example:

python3 py_modules/code_projects/extract_projects.py       \
  --build-dir test_output                                  \
  --extracted_projects extracted_projects.json             \
  $(find ../content/courses/intro-to-ada/ -name '*.rst')

python3 py_modules/code_projects/check_projects.py         \
  --build-dir test_output                                  \
  --extracted_projects extracted_projects.json

Checking single code blocks

When extracting the source-code examples from the ReST files, a JSON file called block_info.json is created for each code block. It's possible to check a single code block by using the check_code_block.py and indicating this JSON file. For example:

python3 py_modules/code_projects/check_code_block.py \
  test_output/projects/Courses/Intro_To_Ada/Imperative_Language/Greet/cba89a34b87c9dfa71533d982d05e6ab/block_info.json

Forced check

To force checking of a specific code block, use the --force switch:

python3 py_modules/code_projects/check_code_block.py   \
  --force                                              \
  test_output/projects/Courses/Intro_To_Ada/Imperative_Language/Greet/cba89a34b87c9dfa71533d982d05e6ab/block_info.json

Testing single code block

To test just a single code block from an ReST file, use the --code-block-at switch:

python3 py_modules/code_projects/extract_projects.py       \
  --code-block-at=28                                       \
  --extracted_projects test_output/extracted_projects.json \
  ../content/courses/intro-to-ada/chapters/imperative_language.rst

python3 py_modules/code_projects/check_projects.py         \
  --extracted_projects test_output/extracted_projects.json

Style check: maximum number of columns

To ensure that a maximum limit of 80 columns per line is respected in the code examples, use the --max_columns switch.

For example, using the check_projects.py script:

python3 py_modules/code_projects/check_projects.py   \
  --max-columns 80                                   \
  --extracted_projects test_output/extracted_projects.json

For example, using the check_code_block.py script:

python3 py_modules/code_projects/check_code_block.py \
  --max-columns 80                                   \
  test_output/projects/Courses/Intro_To_Ada/Imperative_Language/Greet/cba89a34b87c9dfa71533d982d05e6ab/block_info.json