refactored exception formatting and added tests

Author: katzy687

.gitignore

@@ -1,3 +1,4 @@
 .idea/
 .pytest_cache/
-*.egg
+*.egg
+tests/.env

cloudshell/sandbox_rest/__pycache__/sandbox_components.cpython-37.pyc

@@ -0,0 +1,28 @@
+from requests import Response
+
+
+class SandboxRestException(Exception):
+    """ Base Exception Class inside Rest client class """
+    def __init__(self, msg: str, response: Response = None):
+        self.msg = msg
+        self.response = response
+
+    def __str__(self):
+        return self._format_err_msg(self.msg, self.response)
+
+    def _format_err_msg(self, custom_err_msg="Failed Api Call", response: Response = None) -> str:
+        err_msg = f"Sandbox API Error: {custom_err_msg}"
+
+        if response:
+            err_msg += f"\n{self._format_response_msg(response)}"
+
+    @staticmethod
+    def _format_response_msg(response: Response):
+        return (f"Response: {response.status_code}, Reason: {response.reason}\n"
+                f"Request URL: {response.request.url}\n"
+                f"Request Headers: {response.request.headers}")
+
+
+class SandboxRestAuthException(SandboxRestException):
+    """ Failed auth action """
+    pass