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2026-05-27 23:29:53 +01:00

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TypeScript

/**
* Test setup for @suaveplan/api-secrets-vault.
*
* Installs an in-memory OpenTelemetry MeterProvider BEFORE any source
* module imports so the meter resolved on first call binds to it. The
* helper `flushTestMetrics` collects every snapshot emitted since the
* previous call, which the OTel assertion tests use to verify counter
* emission without relying on real exporters.
*/
import { metrics } from "@opentelemetry/api";
import {
AggregationTemporality,
InMemoryMetricExporter,
MeterProvider,
PeriodicExportingMetricReader,
} from "@opentelemetry/sdk-metrics";
export const testInMemoryMetricExporter = new InMemoryMetricExporter(
AggregationTemporality.CUMULATIVE
);
const reader = new PeriodicExportingMetricReader({
exporter: testInMemoryMetricExporter,
exportIntervalMillis: 60_000,
});
export const testMeterProvider = new MeterProvider({ readers: [reader] });
metrics.setGlobalMeterProvider(testMeterProvider);
export async function flushTestMetrics() {
await testMeterProvider.forceFlush();
const collected = testInMemoryMetricExporter.getMetrics();
testInMemoryMetricExporter.reset();
return collected;
}