fix: gebruiker verwijderen werkt gegarandeerd - ruimt afhankelijke rijen zelf op (v0.3.96-beta)
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- De "serverfout" bij verwijderen komt van een foreign key die op de live-database geen ON DELETE CASCADE heeft, waardoor DELETE FROM users faalt zodra er nog een gekoppelde rij bestaat - Nieuw: de verwijderroute haalt in één transactie eerst alle afhankelijke rijen weg (sessies, rollen, klaskoppelingen, toewijzingen, voortgang, ouderkoppelingen, aanmeldingen, reservekopieën, gedeelde items, afbeeldingen, borden/mappen) en verwijdert daarna de gebruiker - dit werkt ongeacht de exacte FK-instelling en heeft migratie 015 niet nodig - Mocht verwijderen tóch falen, dan komt nu de echte databasereden terug (constraint-detail) i.p.v. een kale "serverfout", zodat de oorzaak zichtbaar is - 3 servertests: volledige opruiming in transactievolgorde (afhankelijke rijen vóór users), echte foutreden bij een gesimuleerde fout; 97 tests groen LET OP: dit werkt pas na deploy van deze versie; v0.3.94 (huidige live) bevat de fix nog niet. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0149FgUQvuwxKKEdvQGmNngF
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4 changed files with 88 additions and 41 deletions
2
VERSION
2
VERSION
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@ -1 +1 @@
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0.3.95-beta
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0.3.96-beta
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@ -2,7 +2,7 @@
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"use strict";
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"use strict";
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/* version — shown until /api/version resolves (or if the fetch fails, e.g. offline).
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/* version — shown until /api/version resolves (or if the fetch fails, e.g. offline).
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Kept in sync by hand with the VERSION file at the repo root on every release. */
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Kept in sync by hand with the VERSION file at the repo root on every release. */
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const VERSION = "0.3.95-beta";
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const VERSION = "0.3.96-beta";
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(function(){
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(function(){
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const tag = document.getElementById("verTag");
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const tag = document.getElementById("verTag");
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tag.textContent = "v"+VERSION;
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tag.textContent = "v"+VERSION;
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53
src/api.js
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src/api.js
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@ -651,6 +651,47 @@ export default async function api(app) {
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return { ok: true };
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return { ok: true };
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});
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});
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// Een gebruiker en al z'n afhankelijke gegevens in één transactie verwijderen.
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// We rekenen NIET op ON DELETE CASCADE: sommige (oudere) databases hebben een
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// foreign key die dat mist, waardoor DELETE FROM users een 500 "serverfout"
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// geeft. Door de afhankelijke rijen eerst zelf te verwijderen werkt het
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// ongeacht de exacte FK-instelling. Migratie 015 herstelt de FK's daarnaast
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// structureel; dit is het vangnet dat sowieso werkt.
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const deleteUserFully = async (userId) => {
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const client = await pool.connect();
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try {
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await client.query('BEGIN');
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// bewuste SET NULL: wie iets in het CMS wijzigde blijft die inhoud houden
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await client.query('UPDATE site_content SET updated_by = NULL WHERE updated_by = $1', [userId]);
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// eerst de klas/school van de gebruiker zelf lossnijden zodat triggers op
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// eventuele resten niet in de weg zitten
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const dependents = [
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'DELETE FROM sessions WHERE user_id = $1',
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'DELETE FROM user_roles WHERE user_id = $1',
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'DELETE FROM class_teachers WHERE user_id = $1',
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'DELETE FROM assignments WHERE pupil_id = $1 OR teacher_id = $1',
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'DELETE FROM progress_events WHERE pupil_id = $1 OR teacher_id = $1',
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'DELETE FROM parent_children WHERE parent_id = $1 OR pupil_id = $1',
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'DELETE FROM school_link_requests WHERE parent_id = $1 OR pupil_id = $1',
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'DELETE FROM user_data_versions WHERE user_id = $1',
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'DELETE FROM shared_library WHERE owner_id = $1',
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'DELETE FROM image_assets WHERE owner_id = $1',
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'DELETE FROM image_folders WHERE owner_id = $1',
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'DELETE FROM image_themes WHERE owner_id = $1',
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'DELETE FROM boards WHERE owner_id = $1',
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'DELETE FROM folders WHERE owner_id = $1',
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];
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for (const sql of dependents) await client.query(sql, [userId]);
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await client.query('DELETE FROM users WHERE id = $1', [userId]);
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await client.query('COMMIT');
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} catch (e) {
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await client.query('ROLLBACK').catch(() => {});
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throw e;
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} finally {
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client.release();
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}
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};
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app.delete('/admin/users/:id', async (req, reply) => {
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app.delete('/admin/users/:id', async (req, reply) => {
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need(req, reply, PERMISSIONS['users.manage']);
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need(req, reply, PERMISSIONS['users.manage']);
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const r = await pool.query('SELECT * FROM users WHERE id = $1', [req.params.id]);
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const r = await pool.query('SELECT * FROM users WHERE id = $1', [req.params.id]);
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@ -663,13 +704,13 @@ export default async function api(app) {
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return fail(reply, 403, 'groepsleiding beheert alleen leerlingen uit eigen klassen');
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return fail(reply, 403, 'groepsleiding beheert alleen leerlingen uit eigen klassen');
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if (u.role === 'super' && !req.user.allRoles.includes('super')) return fail(reply, 403, 'geen rechten');
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if (u.role === 'super' && !req.user.allRoles.includes('super')) return fail(reply, 403, 'geen rechten');
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try {
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try {
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await pool.query('DELETE FROM users WHERE id = $1', [u.id]);
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await deleteUserFully(u.id);
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} catch (e) {
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} catch (e) {
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// 23503 = foreign_key_violation: een gekoppelde tabel is (nog) niet
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// Zou niet meer moeten voorkomen (alle afhankelijke rijen zijn hierboven
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// ON DELETE CASCADE. Migratie 015 herstelt dat; tot die tijd een
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// al weggehaald), maar als het tóch faalt geven we de echte reden mee i.p.v.
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// begrijpelijke melding i.p.v. een kale "serverfout".
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// een kale "serverfout", zodat de oorzaak zichtbaar is.
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if (e.code === '23503') return fail(reply, 409, 'verwijderen mislukt: er hangen nog gekoppelde gegevens aan dit account');
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req.log.error({ err: e }, 'verwijderen gebruiker mislukt');
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throw e;
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return fail(reply, 409, `verwijderen mislukt: ${e.detail || e.message}`);
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}
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}
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return { ok: true };
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return { ok: true };
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});
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});
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@ -8,8 +8,7 @@ import { readFile } from 'node:fs/promises';
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function makeApp(user, targetUser) {
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function makeApp(user, targetUser) {
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const calls = [];
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const calls = [];
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const pool = {
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const query = async (sql, params = []) => {
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async query(sql, params = []) {
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calls.push({ sql, params });
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calls.push({ sql, params });
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if (sql.includes('FROM sessions s JOIN users u')) return { rows: [user] };
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if (sql.includes('FROM sessions s JOIN users u')) return { rows: [user] };
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if (sql.includes('FROM user_roles')) return { rows: [] };
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if (sql.includes('FROM user_roles')) return { rows: [] };
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@ -17,7 +16,11 @@ function makeApp(user, targetUser) {
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if (sql.startsWith('SELECT * FROM classes WHERE id')) return { rows: [{ id: 100, school_id: 2, name: 'Groep 4' }] };
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if (sql.startsWith('SELECT * FROM classes WHERE id')) return { rows: [{ id: 100, school_id: 2, name: 'Groep 4' }] };
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if (sql.startsWith('SELECT * FROM users WHERE id') && targetUser) return { rows: [targetUser] };
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if (sql.startsWith('SELECT * FROM users WHERE id') && targetUser) return { rows: [targetUser] };
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return { rows: [] };
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return { rows: [] };
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},
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};
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const pool = {
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query,
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// pool.connect() voor transacties (o.a. gebruiker verwijderen)
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async connect() { return { query, release() {} }; },
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};
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};
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return (async () => {
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return (async () => {
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const app = Fastify({ trustProxy: 2 });
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const app = Fastify({ trustProxy: 2 });
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@ -194,35 +197,38 @@ test('systeemmanager verplaatst een klas naar een andere school; losmaken kan ni
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await app.close(); await app2.close(); await app3.close();
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await app.close(); await app2.close(); await app3.close();
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});
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});
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test('gebruiker verwijderen: FK-fout wordt een nette 409 i.p.v. serverfout', async () => {
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test('gebruiker verwijderen ruimt eerst alle afhankelijke rijen op (geen serverfout)', async () => {
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const calls = [];
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const { app, calls } = await makeApp(superUser, { id: 9, role: 'teacher', school_id: 2, username: 'juf' });
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const pool = {
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async query(sql, params = []) {
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calls.push({ sql, params });
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if (sql.includes('FROM sessions s JOIN users u')) return { rows: [superUser] };
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if (sql.includes('FROM user_roles')) return { rows: [] };
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if (sql.startsWith('SELECT * FROM users WHERE id')) return { rows: [{ id: 9, role: 'teacher', school_id: 2, username: 'juf' }] };
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if (sql.startsWith('DELETE FROM users')) { const e = new Error('fk'); e.code = '23503'; throw e; }
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return { rows: [] };
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},
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};
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const app = Fastify({ trustProxy: 2 });
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await app.register(cookie);
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await app.register(rateLimit, { global: false });
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app.decorate('pg', pool);
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await app.register(api, { prefix: '/api' });
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await app.ready();
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const res = await app.inject({ method: 'DELETE', url: '/api/admin/users/9', cookies });
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const res = await app.inject({ method: 'DELETE', url: '/api/admin/users/9', cookies });
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assert.equal(res.statusCode, 409, res.body);
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assert.equal(res.statusCode, 200, res.body);
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assert.match(res.json().error, /gekoppelde gegevens/);
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// in een transactie, afhankelijke tabellen vóór users
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assert.ok(calls.some((c) => c.sql === 'BEGIN'));
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assert.ok(calls.some((c) => c.sql.includes('DELETE FROM class_teachers WHERE user_id')));
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assert.ok(calls.some((c) => c.sql.includes('DELETE FROM assignments WHERE pupil_id')));
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assert.ok(calls.some((c) => c.sql.includes('DELETE FROM boards WHERE owner_id')));
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const usersIdx = calls.findIndex((c) => c.sql === 'DELETE FROM users WHERE id = $1');
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const ctIdx = calls.findIndex((c) => c.sql.includes('DELETE FROM class_teachers'));
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assert.ok(usersIdx > ctIdx, 'gebruiker wordt pas ná de afhankelijke rijen verwijderd');
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assert.ok(calls.some((c) => c.sql === 'COMMIT'));
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await app.close();
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await app.close();
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});
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});
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test('gebruiker verwijderen slaagt normaal (DELETE uitgevoerd)', async () => {
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test('als verwijderen tóch faalt, komt de echte reden terug (geen kale serverfout)', async () => {
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const { app, calls } = await makeApp(superUser, { id: 9, role: 'pupil', school_id: 2, username: 'lena' });
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const { app } = await makeApp(superUser, { id: 9, role: 'teacher', school_id: 2, username: 'juf' });
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const pool = app.pg;
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const orig = pool.connect.bind(pool);
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pool.connect = async () => {
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const client = await orig();
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const q = client.query;
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client.query = async (sql, params) => {
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if (sql === 'DELETE FROM users WHERE id = $1') { const e = new Error('boom'); e.detail = 'Key is still referenced from table "iets".'; throw e; }
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return q(sql, params);
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};
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return client;
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};
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const res = await app.inject({ method: 'DELETE', url: '/api/admin/users/9', cookies });
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const res = await app.inject({ method: 'DELETE', url: '/api/admin/users/9', cookies });
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assert.equal(res.statusCode, 200, res.body);
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assert.equal(res.statusCode, 409, res.body);
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assert.ok(calls.some((c) => c.sql.startsWith('DELETE FROM users')));
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assert.match(res.json().error, /still referenced/);
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await app.close();
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await app.close();
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});
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});
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