add connection test

Author: chadcarlson

test/testdata/PLATFORM_RELATIONSHIPS.json

@@ -52,5 +52,18 @@
          "hostname" : "dg3c6xro44gl5tuxqbqf5flvhu.solr.service._.eu-3.platformsh.site",
          "scheme" : "solr"
       }
+   ],
+   "headless": [
+      {
+          "service": "headless",
+          "ip": "169.254.16.215",
+          "hostname": "vjteswvo72bpyb33rgijkpooja.headless.service._.eu-3.platformsh.site",
+          "cluster": "moqwtrvgc63mo-pr-5-kehpj4q",
+          "host": "headless.internal",
+          "rel": "http",
+          "scheme": "http",
+          "type": "chrome-headless:73",
+          "port": 9222
+      }
    ]
 }

test/tests.js

@@ -345,7 +345,17 @@ describe("Config tests", () => {
             });
         });
 
+        it('formatts a puppeteer connection', () => {
+            let c = new psh.Config(mockEnvironmentRuntime);
 
-    });
+            let formatted = c.formattedCredentials('headless', 'puppeteer')
+
+            assert.deepEqual(formatted, {
+                host: 'headless.internal',
+                port: 9222,
+                ip: "169.254.16.215"
+            });
+        });
+     });
 
 });