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315
packages/api/api-plugin-banking/tests/fake-adapter.ts
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315
packages/api/api-plugin-banking/tests/fake-adapter.ts
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/**
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* In-memory `DatabaseAdapter` test double — NOT a mock.
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*
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* Satisfies the `@suaveplan/db` `DatabaseAdapter` interface with a real
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* implementation backed by `Map<table, Map<id, row>>`. Used by unit
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* tests for fast feedback. Integration tests exercise the same
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* repository / service code against a real SurrealDB testcontainer.
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*
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* The SurQL subset supported:
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*
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* - `SELECT * FROM <table>` / with `WHERE <field> = $p0` / `LIMIT n START m` / `ORDER BY created_at DESC`
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* - `SELECT count() AS count FROM <table> [WHERE ...] GROUP ALL`
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* - `UPDATE <table>:<id> SET k = $pN, ..., updated_at = time::now()` returning the updated row
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* - `DELETE <table> WHERE ... RETURN BEFORE`
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*
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* This is enough surface to cover every code path in
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* `BankRepository`, `BankAccountRepository`, and the
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* `BankingService` policy layer. Routes are tested by mounting them
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* against this adapter via the real `BankingService`.
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*/
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import type {
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DatabaseAdapter,
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DbOperationOptions,
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MigrationConfig,
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MigrationResult,
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} from "@suaveplan/db";
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import type { DatabaseLike } from "@suaveplan/types";
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type Row = Record<string, unknown> & { id: string };
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interface SelectFilter {
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field?: string;
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paramIndex?: number;
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extraField?: string;
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extraParamIndex?: number;
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extraOp?: "=" | "!=";
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limit?: number;
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offset?: number;
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orderByCreatedDesc?: boolean;
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containsParamIndex?: number;
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countOnly?: boolean;
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}
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const NOW = () => new Date().toISOString();
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export class FakeDatabaseAdapter implements DatabaseAdapter {
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public readonly tables = new Map<string, Map<string, Row>>();
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public readonly callLog: string[] = [];
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private seq = 0;
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public failNextQuery = false;
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public get isConnected(): boolean {
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return true;
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}
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public async connect(): Promise<void> {}
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public async disconnect(): Promise<void> {}
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public async close(): Promise<void> {}
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public async migrate(
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_config?: MigrationConfig,
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_opts?: DbOperationOptions
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): Promise<MigrationResult> {
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return { applied: 0, migrations: [] };
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}
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public async transaction<T>(
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fn: (tx: DatabaseLike) => Promise<T>,
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_opts?: DbOperationOptions
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): Promise<T> {
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return fn(this as unknown as DatabaseLike);
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}
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public async execute(
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sql: string,
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_params?: readonly unknown[],
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_opts?: DbOperationOptions
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): Promise<{ rowsAffected: number }> {
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this.callLog.push(`execute:${sql.trim().split(/\s+/, 2).join(" ")}`);
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return { rowsAffected: 0 };
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}
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public async query<T = Record<string, unknown>>(
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sql: string,
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params?: readonly unknown[],
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_opts?: DbOperationOptions
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): Promise<T[]> {
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this.callLog.push(`query:${sql.trim().slice(0, 80)}`);
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if (this.failNextQuery) {
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this.failNextQuery = false;
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throw new Error("Forced query failure");
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}
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return this.parseAndRun<T>(sql, params ?? []);
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}
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public async create<T extends Record<string, unknown>>(
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table: string,
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data: T,
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_opts?: DbOperationOptions
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): Promise<T & { id: string }> {
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this.callLog.push(`create:${table}`);
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const map = this.ensureTable(table);
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const id = `${table}:${String(++this.seq)}`;
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const row: Row = {
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...data,
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id,
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created_at: NOW(),
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updated_at: NOW(),
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};
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map.set(id, row);
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return row as T & { id: string };
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}
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public async select<T extends Record<string, unknown>>(
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table: string,
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id: string,
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_opts?: DbOperationOptions
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): Promise<T | null> {
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this.callLog.push(`select:${table}:${id}`);
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const map = this.tables.get(table);
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if (map === undefined) return null;
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const fullId = id.includes(":") ? id : `${table}:${id}`;
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const row = map.get(fullId);
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return row === undefined ? null : (row as unknown as T);
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}
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public async update<T extends Record<string, unknown>>(
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table: string,
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id: string,
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data: Partial<T>,
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_opts?: DbOperationOptions
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): Promise<T | null> {
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const fullId = id.includes(":") ? id : `${table}:${id}`;
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const map = this.tables.get(table);
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if (map === undefined) return null;
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const existing = map.get(fullId);
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if (existing === undefined) return null;
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const updated = { ...existing, ...data, updated_at: NOW() };
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map.set(fullId, updated as Row);
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return updated as unknown as T;
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}
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public async delete(
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table: string,
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id: string,
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_opts?: DbOperationOptions
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): Promise<void> {
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const fullId = id.includes(":") ? id : `${table}:${id}`;
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const map = this.tables.get(table);
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if (map !== undefined) map.delete(fullId);
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}
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public async selectAll<T extends Record<string, unknown>>(
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table: string,
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_opts?: DbOperationOptions
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): Promise<T[]> {
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const map = this.tables.get(table);
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if (map === undefined) return [];
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return Array.from(map.values()) as unknown as T[];
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}
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private ensureTable(table: string): Map<string, Row> {
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let map = this.tables.get(table);
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if (map === undefined) {
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map = new Map();
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this.tables.set(table, map);
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}
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return map;
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}
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private parseAndRun<T>(sql: string, params: readonly unknown[]): T[] {
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const trimmed = sql.replaceAll(/\s+/g, " ").trim();
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// UPDATE table:id SET ... — returns updated row
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const upd = trimmed.match(
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/^UPDATE\s+([a-z_]+):([^\s]+)\s+SET\s+(.+)$/i
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);
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if (upd !== null) {
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const table = upd[1];
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const id = `${table}:${upd[2]}`;
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const setClause = upd[3];
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const map = this.tables.get(table);
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if (map === undefined) return [];
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const row = map.get(id);
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if (row === undefined) return [];
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const updated: Row = { ...row };
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for (const part of setClause.split(",")) {
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const m = part
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.trim()
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.match(
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/^([a-z_]+)\s*=\s*(?:\$p(\d+)|([a-z_]+)\s*([+-])\s*\$p(\d+)|time::now\(\))/i
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);
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if (m === null) continue;
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const field = m[1];
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if (m[2] !== undefined) {
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updated[field] = params[Number(m[2])];
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} else if (m[3] !== undefined) {
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const cur = Number(updated[m[3]] ?? 0);
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const delta = Number(params[Number(m[5])]);
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updated[field] = m[4] === "+" ? cur + delta : cur - delta;
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} else {
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updated[field] = NOW();
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}
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}
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updated.updated_at = NOW();
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map.set(id, updated);
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return [updated as unknown as T];
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}
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// DELETE table WHERE ... RETURN BEFORE
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const del = trimmed.match(
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/^DELETE\s+([a-z_]+)\s+WHERE\s+(.+?)\s+RETURN\s+BEFORE$/i
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);
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if (del !== null) {
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const table = del[1];
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const map = this.tables.get(table);
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if (map === undefined) return [];
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const removed: Row[] = [];
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const filter = this.parseWhereExpression(del[2], params);
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for (const [id, row] of Array.from(map.entries())) {
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if (filter(row)) {
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removed.push(row);
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map.delete(id);
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}
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}
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return removed as unknown as T[];
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}
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// SELECT count() AS count FROM table [WHERE ...] GROUP ALL
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const cnt = trimmed.match(
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/^SELECT\s+count\(\)\s+AS\s+count\s+FROM\s+([a-z_]+)(?:\s+WHERE\s+(.+?))?\s+GROUP\s+ALL$/i
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);
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if (cnt !== null) {
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const table = cnt[1];
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const map = this.tables.get(table);
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if (map === undefined) return [{ count: 0 } as unknown as T];
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const where = cnt[2];
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if (where === undefined) {
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return [{ count: map.size } as unknown as T];
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}
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const filter = this.parseWhereExpression(where, params);
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let n = 0;
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for (const row of map.values()) if (filter(row)) n++;
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return [{ count: n } as unknown as T];
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}
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// SELECT * FROM table [WHERE ...] [ORDER BY created_at DESC] [LIMIT n START m]
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const sel = trimmed.match(
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/^SELECT\s+(?:id|\*)\s+FROM\s+([a-z_]+)(?:\s+WHERE\s+(.+?))?(?:\s+ORDER\s+BY\s+created_at\s+DESC)?(?:\s+LIMIT\s+(\d+)\s+START\s+(\d+))?(?:\s+LIMIT\s+(\d+))?$/i
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);
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if (sel !== null) {
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const table = sel[1];
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const where = sel[2];
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const limit = sel[3] ?? sel[5];
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const start = sel[4];
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const map = this.tables.get(table);
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if (map === undefined) return [];
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let rows = Array.from(map.values());
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if (where !== undefined) {
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const filter = this.parseWhereExpression(where, params);
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rows = rows.filter(filter);
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}
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if (/ORDER\s+BY\s+created_at\s+DESC/i.test(trimmed)) {
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rows = rows.sort((a, b) =>
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String(b.created_at).localeCompare(String(a.created_at))
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);
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}
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if (start !== undefined) {
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rows = rows.slice(Number(start));
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}
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if (limit !== undefined) {
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rows = rows.slice(0, Number(limit));
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}
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return rows as unknown as T[];
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}
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return [];
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}
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private parseWhereExpression(
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expr: string,
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params: readonly unknown[]
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): (row: Row) => boolean {
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const clauses = expr.split(/\s+AND\s+/i).map((c) => c.trim());
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const predicates: ((row: Row) => boolean)[] = [];
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for (const c of clauses) {
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const eq = c.match(/^([a-z_]+)\s*=\s*\$p(\d+)$/i);
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if (eq !== null) {
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const f = eq[1];
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const v = params[Number(eq[2])];
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predicates.push((r) => r[f] === v);
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continue;
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}
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const neq = c.match(/^([a-z_]+)\s*!=\s*\$p(\d+)$/i);
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if (neq !== null) {
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const f = neq[1];
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const v = params[Number(neq[2])];
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predicates.push((r) => r[f] !== v);
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continue;
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}
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const cont = c.match(
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/^string::lowercase\(\s*([a-z_]+)\s*\)\s+CONTAINS\s+string::lowercase\(\s*\$p(\d+)\s*\)$/i
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);
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if (cont !== null) {
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const f = cont[1];
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const v = String(params[Number(cont[2])] ?? "").toLowerCase();
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predicates.push((r) =>
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String(r[f] ?? "")
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.toLowerCase()
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.includes(v)
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);
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}
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}
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return (row) => predicates.every((p) => p(row));
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}
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}
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34
packages/api/api-plugin-banking/tests/setup/polyfills.ts
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34
packages/api/api-plugin-banking/tests/setup/polyfills.ts
Normal file
@@ -0,0 +1,34 @@
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/**
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* Test setup for @suaveplan/api-plugin-banking.
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*
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* Installs a real in-memory OpenTelemetry MeterProvider BEFORE any
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* source module imports so the meter resolved on first call binds to
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* it. Tests that need fresh metric state per case call
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* `resetBankingInstruments()` and `flushTestMetrics()` themselves.
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*/
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import { metrics } from "@opentelemetry/api";
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import {
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AggregationTemporality,
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InMemoryMetricExporter,
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MeterProvider,
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PeriodicExportingMetricReader,
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} from "@opentelemetry/sdk-metrics";
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export const testInMemoryMetricExporter = new InMemoryMetricExporter(
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AggregationTemporality.CUMULATIVE
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);
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const reader = new PeriodicExportingMetricReader({
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exporter: testInMemoryMetricExporter,
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exportIntervalMillis: 60_000,
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});
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export const testMeterProvider = new MeterProvider({ readers: [reader] });
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metrics.setGlobalMeterProvider(testMeterProvider);
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export async function flushTestMetrics() {
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await testMeterProvider.forceFlush();
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const collected = testInMemoryMetricExporter.getMetrics();
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testInMemoryMetricExporter.reset();
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return collected;
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}
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