add tests for awsConfigCredentials methods

lib/plugins/aws/configCredentials/awsConfigCredentials.test.js

@@ -216,4 +216,61 @@ describe('AwsConfigCredentials', () => {
       });
     });
   });
+
+  describe('#getCredentials()', () => {
+    it('should load credentials file and return the credentials lines', () => {
+      fse.outputFileSync(credentialsFilePath, credentialsFileContent);
+      const credentials = awsConfigCredentials.getCredentials();
+
+      expect(credentials[0]).to.equal('[my-profile]');
+      expect(credentials[1]).to.equal('aws_access_key_id = my-old-profile-key');
+    });
+
+    it('should return an empty array if the file is empty', () => {
+      const credentials = awsConfigCredentials.getCredentials();
+
+      expect(credentials.length).to.equal(0);
+    });
+  });
+
+  describe('#getProfileBoundaries()', () => {
+    it('should return the start and end numbers of the profile', () => {
+      awsConfigCredentials.options.profile = 'my-profile';
+      awsConfigCredentials.credentials = [
+        '[my-profile]',
+        'aws_access_key_id = my-other-profile-key',
+      ];
+
+      const profileBoundaries = awsConfigCredentials.getProfileBoundaries();
+
+      expect(profileBoundaries.start).to.equal(0);
+      expect(profileBoundaries.end).to.equal(2);
+    });
+
+    it('should set the start property to -1 if the profile was not found', () => {
+      awsConfigCredentials.options.profile = 'my-not-yet-saved-profile';
+      awsConfigCredentials.credentials = [
+        '[my-profile]',
+        'aws_access_key_id = my-other-profile-key',
+      ];
+
+      const profileBoundaries = awsConfigCredentials.getProfileBoundaries();
+
+      expect(profileBoundaries.start).to.equal(-1);
+    });
+
+    it('should set the end to the credentials lentgh if no other profile was found', () => {
+      awsConfigCredentials.options.profile = 'my-profile';
+      awsConfigCredentials.credentials = [
+        '[my-profile]',
+        'aws_access_key_id = my-other-profile-key',
+        '# a comment',
+        'aws_secret_access_key = my-profile-secret',
+      ];
+
+      const profileBoundaries = awsConfigCredentials.getProfileBoundaries();
+
+      expect(profileBoundaries.end).to.equal(4);
+    });
+  });
 });