Add test class for APICallController

Author: surajp

force-app/main/default/classes/APICallController.cls

@@ -12,7 +12,6 @@ public with sharing class APICallController {
   ) {
     HttpRequest req = new HttpRequest();
     req.setEndpoint(endPoint);
-    system.debug('endpoint ' + endpoint);
     req.setMethod(method);
     if (method != 'GET') {
       req.setBody(bodyStr);
@@ -23,7 +22,6 @@ public with sharing class APICallController {
       }
     }
     HttpResponse resp = new Http().send(req);
-    system.debug('response ' + resp.getBody());
     Map<String, String> respHeaders = new Map<String, String>();
     for (String key : resp.getHeaderKeys()) {
       respHeaders.put(key, String.valueOf(resp.getHeader(key)));

force-app/main/default/classes/APICallControllerTest.cls

@@ -0,0 +1,38 @@
+@isTest
+public with sharing class APICallControllerTest {
+  @isTest
+  public static void testAPICall() {
+    Test.setMock(HttpCalloutMock.class, new APICallMock());
+    HttpResponseWrapper resp = APICallController.makeApiCall(
+      'https://api.example.com',
+      'POST',
+      '{"message":"sample_request"}',
+      new Map<String, String>{ 'Accept' => 'application/json', 'Content-Type' => 'application/json' }
+    );
+    system.assertEquals('{"message": "sample response"}', resp.body, 'Unexpected Response');
+    system.assertEquals(200, resp.statusCode, 'Incorrect value for status code');
+    system.assertEquals(2, resp.headers.size(), 'Mismatch in the number of response headers expected');
+    system.assertEquals('sample_value1', resp.headers.get('custom_header1'), 'Incorrect value for first header');
+    system.assertEquals('sample_value2', resp.headers.get('custom_header2'), 'Incorrect value for second header');
+  }
+
+  class APICallMock implements HttpCalloutMock {
+    public HttpResponse respond(HttpRequest req) {
+      HttpResponse resp = new HttpResponse();
+      if (
+        req.getBody() == '{"message":"sample_request"}' &&
+        req.getHeader('Accept') == 'application/json' &&
+        req.getHeader('Content-Type') == 'application/json'
+      ) {
+        resp.setBody('{"message": "sample response"}');
+        resp.setHeader('custom_header1', 'sample_value1');
+        resp.setHeader('custom_header2', 'sample_value2');
+        resp.setStatusCode(200);
+      } else {
+        resp.setStatusCode(400);
+        resp.setBody('{"message":"Bad Request"}');
+      }
+      return resp;
+    }
+  }
+}

force-app/main/default/classes/APICallControllerTest.cls-meta.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>48.0</apiVersion>
+    <status>Active</status>
+</ApexClass>