How to automatically run tests when there's any change in my project (Django)?

Question

At the moment I am running python manage.py test every once in a while after I make significant changes in my django project. Is it possible to run those tests

Answer 1

I wrote a Gulp task to automatically run ./manage.py test whenever any specified Python files are changed or removed. You'll need Node for this.

First, install Gulp:

yarn add -D gulp@next

Then use the following gulpfile.js and make any necessary adjustments:

const { exec } = require('child_process');
const gulp = require('gulp');

const runDjangoTests = (done) => {
  const task = exec('./manage.py test --keepdb', {
    shell: '/bin/bash', // Accept SIGTERM signal. Doesn't work with /bin/sh
  });

  task.stdout.pipe(process.stdout);
  task.stderr.pipe(process.stderr);

  task.on('exit', () => {
    done();
  });

  return task;
};

gulp.task('test', runDjangoTests);

gulp.task('watch', (done) => {
  let activeTask;
  const watcher = gulp.watch('**/*.py', {
    // Ignore whatever directories you need to
    ignored: ['.venv/*', 'node_modules'],
  });

  const runTask = (message) => {
    if (activeTask) {
      activeTask.kill();
      console.log('\n');
    }

    console.log(message);
    activeTask = runDjangoTests(done);
  };

  watcher.on('change', (path) => {
    runTask(`File ${path} was changed. Running tests:`);
  });

  watcher.on('unlink', (path) => {
    runTask(`File ${path} was removed. Running tests:`);
  });
});

Then simply run node node_modules/gulp/bin/gulp.js watch to run the task :)