Fix bank GUID serialization on T5 and T6 (Refs #15)

tools/tests/ec_bank_contract.mjs

@@ -0,0 +1,57 @@
+// Optional integration with a local EC checkout. Execute its real bank service
+// and bank migrations against disposable SQLite, with minimal fleet fixtures.
+// No EC configuration, credentials, HTTP routes or production DB are loaded.
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import { createRequire } from 'node:module';
+import { resolve } from 'node:path';
+import vm from 'node:vm';
+
+export function loadEcBank(directory) {
+    assert(directory, '--ec-root requires an EC checkout with installed dependencies');
+    const requireEc = createRequire(resolve(directory, 'package.json'));
+    const ts = requireEc('typescript');
+    const Database = requireEc('better-sqlite3');
+    function compile(file) {
+        const source = readFileSync(resolve(directory, 'src/lib/server', file), 'utf8');
+        return new vm.Script(ts.transpileModule(source, {
+            compilerOptions: {module:ts.ModuleKind.CommonJS, target:ts.ScriptTarget.ES2022}
+        }).outputText, {filename:file});
+    }
+    const service = compile('fleet/bank.ts');
+    const bankMigration = compile('db/bank.ts');
+    const credentialMigration = compile('db/bank-credentials.ts');
+    return guid => {
+        const database = new Database(':memory:');
+        function execute(script) {
+            const context = vm.createContext({
+                exports: {}, process: {env:{}},
+                require: name => {
+                    assert.equal(name, '../db/index.js', 'unexpected EC runtime dependency');
+                    return {db:() => database};
+                }
+            });
+            script.runInContext(context);
+            return context.exports;
+        }
+        database.exec(`
+            CREATE TABLE native_instances (id TEXT PRIMARY KEY, server TEXT, retired_at TEXT);
+            INSERT INTO native_instances VALUES ('instance', 'server', NULL);
+            CREATE TABLE servers (name TEXT PRIMARY KEY, destroyed_at TEXT);
+            INSERT INTO servers VALUES ('server', NULL);
+            CREATE TABLE leaderboard_matches (id INTEGER PRIMARY KEY, server TEXT, reporter_match_key TEXT, status TEXT);
+            INSERT INTO leaderboard_matches VALUES (1, 'server', 'match', 'active');
+            CREATE TABLE leaderboard_match_players (match_id INTEGER, guid TEXT, present INTEGER);
+        `);
+        database.prepare('INSERT INTO leaderboard_match_players VALUES (1, ?, 1)').run(guid);
+        execute(bankMigration).migrateBank(database);
+        execute(credentialMigration).migrateBankCredentials(database);
+        const {bankRequest} = execute(service);
+        return {
+            request: (action, body) => bankRequest(action, body, 'server', 'instance'),
+            ledger: () => database.prepare('SELECT guid, amount FROM bank_ledger ORDER BY id').all(),
+            requests: () => database.prepare('SELECT request_id, guid, state FROM bank_requests ORDER BY request_id').all(),
+            close: () => database.close()
+        };
+    };
+}