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test-ex-2-1.js
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test-ex-2-1.js
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const test = require('ava');
const { runInDocker } = require('./runInDocker');
const mongoInDocker = require('./src/mongoInDocker');
// IMPORTANT: all collections that going to be queried from the application should be defined in the structure below.
// Otherwise, queries will hang / wait undefinitely, and silently !
const MOCK_DB_STRUCTURE = {
test: { dates: [] } /* a test database with a dates collection */
};
// Préparation des tests
async function prepareStudentCode(code) {
console.log(await runInDocker(`npm install --no-audit`));
const saveDatesForTesting = []
.concat(
'cat > dates_for_testing.js << CONTENTS',
code.replace(/['"]mongodb.*\:\/\/.+['"]/g, 'process.env.MONGODB_URI'),
'CONTENTS'
)
.join('\n');
console.log(await runInDocker(saveDatesForTesting));
}
test.before('Lecture du code source fourni', async t => {
const code = await runInDocker(`cat dates.js`);
t.log(code);
t.context.serverSource = code;
t.context.promisedMongoServer = prepareStudentCode(code).then(() =>
mongoInDocker.installAndStartFakeServer(MOCK_DB_STRUCTURE)
);
t.context.runStudentCode = async () => {
const { connectionString } = await t.context.promisedMongoServer;
return await runInDocker(
`MONGODB_URI="${connectionString}" node dates_for_testing.js`
);
};
});
// Exigences structurelles
test.serial(
'dates.js utilise seulement await pour récupérer les valeurs promises',
t => {
const { serverSource } = t.context;
t.regex(serverSource, /await/);
t.notRegex(serverSource, /\.then\(/);
t.notRegex(serverSource, /\.catch\(/);
}
);
// Exigences fonctionnelles
test.serial.skip('connect to mongodb from container', async t => {
const { connectionString } = await t.context.promisedMongoServer;
const result = await mongoInDocker.runClient(connectionString);
t.regex(result, /Connected successfully to server/);
});
test.serial('exécution initiale: une seule date', async t => {
const output = await t.context.runStudentCode();
const dates = output.match(/{([^}]*)}/g);
t.is(dates.length, 1);
});
test.serial('deuxième exécution: deux dates', async t => {
// TODO: for the sake of test independance, we should restart the mongo server here
const output = await t.context.runStudentCode();
const dates = output.match(/{([^}]*)}/g);
t.is(dates.length, 2);
});
test.serial('troisième exécution: trois dates', async t => {
const output = await t.context.runStudentCode();
const dates = output.match(/{([^}]*)}/g);
t.is(dates.length, 3);
});
// TODO: test.serial.todo('should not have a callback');
// TODO: test.serial.todo('gestion erreurs ?'); // e.g. server is offline => kill it