1 files changed, 104 insertions, 0 deletions
diff --git a/packages/core/src/telemetry/sdk.test.ts b/packages/core/src/telemetry/sdk.test.ts
new file mode 100644
index 00000000..a583bc38
--- /dev/null
+++ b/packages/core/src/telemetry/sdk.test.ts
@@ -0,0 +1,104 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
+import { Config } from '../config/config.js';
+import { initializeTelemetry, shutdownTelemetry } from './sdk.js';
+import { OTLPTraceExporter } from '@opentelemetry/exporter-trace-otlp-grpc';
+import { OTLPLogExporter } from '@opentelemetry/exporter-logs-otlp-grpc';
+import { OTLPMetricExporter } from '@opentelemetry/exporter-metrics-otlp-grpc';
+import { OTLPTraceExporter as OTLPTraceExporterHttp } from '@opentelemetry/exporter-trace-otlp-http';
+import { OTLPLogExporter as OTLPLogExporterHttp } from '@opentelemetry/exporter-logs-otlp-http';
+import { OTLPMetricExporter as OTLPMetricExporterHttp } from '@opentelemetry/exporter-metrics-otlp-http';
+import { NodeSDK } from '@opentelemetry/sdk-node';
+
+vi.mock('@opentelemetry/exporter-trace-otlp-grpc');
+vi.mock('@opentelemetry/exporter-logs-otlp-grpc');
+vi.mock('@opentelemetry/exporter-metrics-otlp-grpc');
+vi.mock('@opentelemetry/exporter-trace-otlp-http');
+vi.mock('@opentelemetry/exporter-logs-otlp-http');
+vi.mock('@opentelemetry/exporter-metrics-otlp-http');
+vi.mock('@opentelemetry/sdk-node');
+
+describe('Telemetry SDK', () => {
+  let mockConfig: Config;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    mockConfig = {
+      getTelemetryEnabled: () => true,
+      getTelemetryOtlpEndpoint: () => 'http://localhost:4317',
+      getTelemetryOtlpProtocol: () => 'grpc',
+      getTelemetryOutfile: () => undefined,
+      getDebugMode: () => false,
+      getSessionId: () => 'test-session',
+    } as unknown as Config;
+  });
+
+  afterEach(async () => {
+    await shutdownTelemetry(mockConfig);
+  });
+
+  it('should use gRPC exporters when protocol is grpc', () => {
+    initializeTelemetry(mockConfig);
+
+    expect(OTLPTraceExporter).toHaveBeenCalledWith({
+      url: 'http://localhost:4317',
+      compression: 'gzip',
+    });
+    expect(OTLPLogExporter).toHaveBeenCalledWith({
+      url: 'http://localhost:4317',
+      compression: 'gzip',
+    });
+    expect(OTLPMetricExporter).toHaveBeenCalledWith({
+      url: 'http://localhost:4317',
+      compression: 'gzip',
+    });
+    expect(NodeSDK.prototype.start).toHaveBeenCalled();
+  });
+
+  it('should use HTTP exporters when protocol is http', () => {
+    vi.spyOn(mockConfig, 'getTelemetryEnabled').mockReturnValue(true);
+    vi.spyOn(mockConfig, 'getTelemetryOtlpProtocol').mockReturnValue('http');
+    vi.spyOn(mockConfig, 'getTelemetryOtlpEndpoint').mockReturnValue(
+      'http://localhost:4318',
+    );
+
+    initializeTelemetry(mockConfig);
+
+    expect(OTLPTraceExporterHttp).toHaveBeenCalledWith({
+      url: 'http://localhost:4318/',
+    });
+    expect(OTLPLogExporterHttp).toHaveBeenCalledWith({
+      url: 'http://localhost:4318/',
+    });
+    expect(OTLPMetricExporterHttp).toHaveBeenCalledWith({
+      url: 'http://localhost:4318/',
+    });
+    expect(NodeSDK.prototype.start).toHaveBeenCalled();
+  });
+
+  it('should parse gRPC endpoint correctly', () => {
+    vi.spyOn(mockConfig, 'getTelemetryOtlpEndpoint').mockReturnValue(
+      'https://my-collector.com',
+    );
+    initializeTelemetry(mockConfig);
+    expect(OTLPTraceExporter).toHaveBeenCalledWith(
+      expect.objectContaining({ url: 'https://my-collector.com' }),
+    );
+  });
+
+  it('should parse HTTP endpoint correctly', () => {
+    vi.spyOn(mockConfig, 'getTelemetryOtlpProtocol').mockReturnValue('http');
+    vi.spyOn(mockConfig, 'getTelemetryOtlpEndpoint').mockReturnValue(
+      'https://my-collector.com',
+    );
+    initializeTelemetry(mockConfig);
+    expect(OTLPTraceExporterHttp).toHaveBeenCalledWith(
+      expect.objectContaining({ url: 'https://my-collector.com/' }),
+    );
+  });
+});