test: cover isolated SQLite invariants and durability

test/bank-cards-durability.cjs

@@ -1,6 +1,6 @@
 const assert = require('node:assert/strict');
 const { spawn, execFileSync } = require('node:child_process');
-const { mkdtempSync, openSync, closeSync, writeFileSync } = require('node:fs');
+const { mkdtempSync, openSync, closeSync, writeFileSync, existsSync, readdirSync, readFileSync } = require('node:fs');
 const { tmpdir } = require('node:os');
 const { join, resolve } = require('node:path');
 const { once } = require('node:events');
@@ -9,6 +9,15 @@ const { randomUUID } = require('node:crypto');
 const repo = resolve(__dirname, '..');
 assert.ok(process.argv[2], 'Pass a separately built baseline repository directory');
 const baseline = resolve(process.argv[2]);
+assert.notEqual(baseline, repo, 'Baseline must be a separate historical build');
+for (const root of [baseline, repo]) {
+ assert.ok(existsSync(join(root, 'dist/src/main.js')), `Build first: ${root}`);
+}
+const migrations = root => readdirSync(join(root, 'prisma/migrations')).filter(name => existsSync(join(root, 'prisma/migrations', name, 'migration.sql'))).sort();
+const previous = migrations(baseline), current = migrations(repo);
+assert.ok(previous.length > 0 && previous.length < current.length, 'Baseline must precede the tested migrations');
+assert.deepEqual(previous, current.slice(0, previous.length), 'Baseline migrations must be an unchanged prefix');
+for (const name of previous) assert.equal(readFileSync(join(baseline, 'prisma/migrations', name, 'migration.sql'), 'utf8'), readFileSync(join(repo, 'prisma/migrations', name, 'migration.sql'), 'utf8'));
 const Database = require(join(repo, 'node_modules/better-sqlite3'));
 const dir = mkdtempSync(join(tmpdir(), 'wealthledger-bank-durability-'));
 let file = join(dir, 'history.db');