44 lines
1.5 KiB
TypeScript
44 lines
1.5 KiB
TypeScript
/**
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* Test-environment setup for @suaveplan/license.
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*
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* Wires a real in-memory OpenTelemetry `MeterProvider` BEFORE any
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* source module is imported, so the meter resolved by `instruments.ts`
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* at module load is the real provider's meter — not the noop fallback.
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* Tests that inspect emitted metrics can read them out of
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* `testInMemoryMetricExporter`.
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*
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* Node ≥18 already exposes `crypto.subtle` and `crypto.getRandomValues`
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* globally, so no crypto polyfill is required.
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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, // tests flush manually via `flushTestMetrics`
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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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/**
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* Force a flush of the test meter provider, returning the collected
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* `ResourceMetrics` snapshots captured by the in-memory exporter so
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* far. Resets the exporter's buffer.
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*/
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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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