add testcase

Author: zhiyuanliang-ms

test/requestTracing.test.ts

@@ -77,7 +77,7 @@ describe("request tracing", function () {
         expect(correlationContext.includes("UsesKeyVault")).eq(true);
     });
 
-    it("should have cdn tag in correlation-context header", async () => {
+    it("should have cdn tag in correlation-context header when loadFromCdn is used", async () => {
         try {
             await loadFromCdn(fakeEndpoint, {
                 clientOptions
@@ -89,6 +89,18 @@ describe("request tracing", function () {
         expect(correlationContext.includes("CDN")).eq(true);
     });
 
+    it("should not have cdn tag in correlation-context header when load is used", async () => {
+        try {
+            await load(createMockedConnectionString(fakeEndpoint), {
+                clientOptions
+            });
+        } catch (e) { /* empty */ }
+        expect(headerPolicy.headers).not.undefined;
+        const correlationContext = headerPolicy.headers.get("Correlation-Context");
+        expect(correlationContext).not.undefined;
+        expect(correlationContext.includes("CDN")).eq(false);
+    });
+
     it("should detect env in correlation-context header", async () => {
         process.env.NODE_ENV = "development";
         try {