TNT-46700 Add proxy configuration

packages/target-nodejs-sdk/test/proxy.spec.js

@@ -0,0 +1,50 @@
+import { Agent } from "https";
+
+const { getFetchWithTelemetry } = require("@adobe/target-tools");
+const TargetClient = require("../src/index.server").default;
+
+describe("Target Client supports proxy configuration", () => {
+  it("By overriding the fetchApi during client initialization", async () => {
+    const proxyAgentSpy = jest.spyOn(Agent.prototype, "createConnection");
+
+    const fetchImpl = (url, options) => {
+      const fetchOptions = options || {};
+      fetchOptions.agent = new Agent({
+        keepAlive: true
+      });
+      const telemetryFetch = getFetchWithTelemetry();
+      return telemetryFetch(url, fetchOptions);
+    };
+
+    const client = TargetClient.create({
+      client: "adobesummit2018",
+      organizationId: "65453EA95A70434F0A495D34@AdobeOrg",
+      decisioningMethod: "server-side",
+      fetchApi: fetchImpl
+    });
+
+    const TARGET_REQUEST = {
+      prefetch: {
+        mboxes: [
+          {
+            name: "mbox-droptop",
+            index: 1
+          }
+        ]
+      }
+    };
+
+    await client.getOffers({
+      request: TARGET_REQUEST,
+      sessionId: "dummy_session"
+    });
+
+    const proxyAgentSpyCall = proxyAgentSpy.mock.calls[0][0];
+
+    expect(proxyAgentSpyCall.keepAlive).toEqual(true);
+    expect(proxyAgentSpyCall.servername).toEqual(
+      "adobesummit2018.tt.omtrdc.net"
+    );
+    expect(proxyAgentSpyCall.headers["X-EXC-SDK"]).toEqual("AdobeTargetNode");
+  });
+});