feat: add test to tracing-node libs

libs/index.js

@@ -33,7 +33,14 @@ const { B3Propagator, B3InjectEncoding } = require('@opentelemetry/propagator-b3
 
 diag.setLogger(new DiagConsoleLogger(), DiagLogLevel.INFO);
 
-function setupTracing(serviceName, appName="application", endpoint=null) {
+/**
+* Sets up tracing for the application with OpenTelemetry.
+* @param {string} serviceName - The name of the service to trace.
+* @param {string} [appName="application"] - The name of the application.
+* @param {string|null} [endpoint=null] - The endpoint for the tracing collector.
+* @returns {Tracer} - The tracer instance for the service.
+*/
+module.exports.setupTracing = (serviceName, appName="application", endpoint=null) => {
   const provider = new NodeTracerProvider({
     resource: new Resource({
       [SemanticResourceAttributes.SERVICE_NAME]: serviceName,
@@ -92,5 +99,3 @@ function setupTracing(serviceName, appName="application", endpoint=null) {
   // Return the tracer for the service
   return provider.getTracer(serviceName);
 }
-
-module.exports.setupTracing = setupTracing;

libs/index.test.js

@@ -0,0 +1,44 @@
+const assert = require('assert');
+const sinon = require('sinon');
+
+// Mocking OpenTelemetry and its dependencies
+const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
+const { CompositePropagator, W3CBaggagePropagator, W3CTraceContextPropagator } = require('@opentelemetry/core');
+
+const { setupTracing } = require('./index');
+
+// Mocking OpenTelemetry and its dependencies
+sinon.stub(NodeTracerProvider.prototype, 'addSpanProcessor');
+sinon.stub(NodeTracerProvider.prototype, 'register');
+sinon.stub(CompositePropagator.prototype, 'constructor');
+sinon.stub(W3CBaggagePropagator.prototype, 'constructor');
+sinon.stub(W3CTraceContextPropagator.prototype, 'constructor');
+
+// Test case for setupTracing function
+function testSetupTracing() {
+  const serviceName = 'test-service';
+  const tracer = setupTracing(serviceName);
+
+  // Ensure that setupTracing returns a valid tracer
+  assert(tracer, 'Tracer should exist');
+
+  console.log('Setup Tracing test passed successfully');
+}
+
+// Test case for setupTracing function with optional parameters
+function testSetupTracingWithOptionalParams() {
+  const serviceName = 'test-service';
+  const appName = 'test-app';
+  const endpoint = 'https://your-collector-endpoint'; // Provide your collector endpoint here
+
+  const tracer = setupTracing(serviceName, appName, endpoint);
+
+  // Ensure that setupTracing with optional parameters returns a valid tracer
+  assert(tracer, 'Tracer should exist');
+
+  console.log('Setup Tracing with optional params test passed successfully');
+}
+
+// Run the tests
+testSetupTracing();
+testSetupTracingWithOptionalParams();

package.json

@@ -49,6 +49,7 @@
     "@opentelemetry/semantic-conventions": "^1.21.0"
   },
   "devDependencies": {
-    "eslint": "8.56.0"
+    "eslint": "8.56.0",
+    "sinon": "^17.0.1"
   }
 }