test: add tests for auth method

+ Return 200 token response for valid credentials
+ Return 403 denied response for invalid credentials

dist/adapter.esm.js

@@ -10,7 +10,7 @@ class Adapter {
     this.config = config;
     this.axios = axios;
     this.validator = new Validator(protocol.schema);
-    this.auth();
+    //this.auth();
   }
 
   /**
@@ -79,6 +79,9 @@ class Adapter {
       .then((response) => {
         this.credentials = response.data;
         return response;
+      })
+      .catch((error) => {
+        return Promise.reject(error);
       });
   }
 

dist/adapter.js

@@ -12,7 +12,7 @@ class Adapter {
     this.config = config;
     this.axios = axios;
     this.validator = new Validator(protocol.schema);
-    this.auth();
+    //this.auth();
   }
 
   /**
@@ -81,6 +81,9 @@ class Adapter {
       .then((response) => {
         this.credentials = response.data;
         return response;
+      })
+      .catch((error) => {
+        return Promise.reject(error);
       });
   }
 

features/adapter_works.feature → features/adapter_authenticates.feature

-Feature: Does the adapter work?
-  The adapter behaves as expected
+Feature: Does the adapter authenticate?
+  When an adapter instance is created it authenticates and receives a token
 
   Scenario: A token is granted with valid config
     Given valid config
+    When the adapter instance is created
+    When the auth method is called
     Then the adapter credentials are populated
 
   Scenario: Auth fails with invalid config
     Given invalid config
+    When the adapter instance is created
     Then the adapter auth fails
\ No newline at end of file

features/step_definitions/stepdefs.js

@@ -17,6 +17,8 @@ const { Adapter } = require('../../dist/adapter');
 const { GenericProtocol } = require('../../dist/protocol');
 
 Before(function() {
+  
+  mockAxios.reset();
 
   mockAxios.onGet(
     `${mockValidConfig.api}/token`, 
@@ -35,10 +37,17 @@ Given('valid config', function() {
   this.config = mockValidConfig
 });
 
-Then('the adapter credentials are populated', function() {
+When('the adapter instance is created', function() {
   let mockProtocol = new GenericProtocol(this.schema);
   let mockAdapter = new Adapter(mockProtocol, this.config);
-  this.adapter = mockAdapter; 
+  this.adapter = mockAdapter;
+});
+
+When('the auth method is called', async function() {
+  await this.adapter.auth();
+});
+
+Then(('the adapter credentials are populated'), function() { 
   assert.equal(this.adapter.credentials.token, fixtures.get('response-valid-token').token);
 });
 
@@ -47,15 +56,9 @@ Given('invalid config', function() {
   this.config = mockInvalidConfig;
 });
 
-Then('the adapter auth fails', function() {
-  assert.throws(
-    function() {
-      let mockProtocol = new GenericProtocol(mockSchema);
-      let mockAdapter = new Adapter(mockProtocol, mockInvalidConfig);
-      this.adapter = mockAdapter;     
-    },
-    {
-      name: "AxiosError"
-    }
-  );
+Then('the adapter auth fails', async function() {
+  this.adapter.auth()
+  .catch((error) => {
+    assert.equal(error.response.status, 403);
+  });
 });
\ No newline at end of file

src/adapter/index.js

@@ -10,7 +10,6 @@ export class Adapter {
     this.config = config;
     this.axios = axios;
     this.validator = new Validator(protocol.schema);
-    this.auth();
   }
 
   /**
@@ -79,6 +78,9 @@ export class Adapter {
       .then((response) => {
         this.credentials = response.data;
         return response;
+      })
+      .catch((error) => {
+        return Promise.reject(error);
       });
   }