Feature: integration testing

Add integration tests with testify/suite. Moved some structs
outside of controller funcs so we can re-use them in the testing
package. Add CI workflow for running tests on every push.

controllers/auth.ctrl.go

@@ -19,20 +19,24 @@ func NewAuthController(svc *service.LndhubService) *AuthController {
 	}
 }
 
+type AuthRequestBody struct {
+	Login        string `json:"login"`
+	Password     string `json:"password"`
+	RefreshToken string `json:"refresh_token"`
+}
+type AuthResponseBody struct {
+	RefreshToken string `json:"refresh_token"`
+	AccessToken  string `json:"access_token"`
+}
+
 // Auth : Auth Controller
 func (controller *AuthController) Auth(c echo.Context) error {
-	type RequestBody struct {
-		Login        string `json:"login"`
-		Password     string `json:"password"`
-		RefreshToken string `json:"refresh_token"`
-	}
 
-	var body RequestBody
+	var body AuthRequestBody
 
 	if err := c.Bind(&body); err != nil {
 		return err
 	}
-
 	if err := c.Validate(&body); err != nil {
 		return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
 	}
@@ -42,8 +46,8 @@ func (controller *AuthController) Auth(c echo.Context) error {
 		return err
 	}
 
-	return c.JSON(http.StatusOK, echo.Map{
-		"refresh_token": refreshToken,
-		"access_token":  accessToken,
+	return c.JSON(http.StatusOK, &AuthResponseBody{
+		RefreshToken: refreshToken,
+		AccessToken:  accessToken,
 	})
 }