feat: move deleteusers tests to a separate file

__mocks__/gen-axios.mock.js

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+const axios = require("axios");
+const logger = require("../logger");
+const { isHttpStatusSuccess } = require("../v0/util");
+jest.mock("axios");
+
+/**
+ * Forms the mock axios client
+ * This client is used in cases where each response is returned almost immediately
+ * 
+ * **Limitations**:
+ * - This mock client would not be useful for scenarios where parallel requests will be made(with randomly responding to requests)
+ * - This mock client would not be useful in-case there are delays needed in responding to requests
+ *
+ * @param {Array<{type: 'constructor'|'get'|'post'|'delete', response: any }>} responsesData
+ * @returns
+ */
+const formAxiosMock = responsesData => {
+  const returnVal = ({ resp, mockInstance }) => {
+    if (isHttpStatusSuccess(resp.response.status)) {
+      mockInstance.mockResolvedValueOnce(resp.response);
+    } else {
+      mockInstance.mockRejectedValueOnce(resp.response);
+    }
+  };
+
+
+  if (Array.isArray(responsesData)) {
+    const constructorMock = jest.fn();
+    const postMock = jest.fn();
+    const getMock = jest.fn();
+    const deleteMock = jest.fn();
+    responsesData.flat().forEach(resp => {
+      let mockInstance;
+      switch (resp.type) {
+        case "constructor":
+          mockInstance = constructorMock;
+          break;
+        case "get":
+          mockInstance = getMock;
+          break;
+        case "delete":
+          mockInstance = deleteMock;
+          break;
+
+        default:
+          mockInstance = postMock;
+          break;
+      }
+      let methodParams = { resp, mockInstance };
+      // validateMockClientReqParams(methodParams);
+      returnVal(methodParams);
+    });
+    axios.get = getMock;
+    axios.post = postMock;
+    axios.delete = deleteMock;
+    axios.mockImplementation(constructorMock);
+  }
+  return axios;
+};
+
+const validateMockAxiosClientReqParams = ({ resp }) => {
+  let mockInstance;
+  switch (resp.type) {
+    case "constructor":
+      mockInstance = axios;
+      break;
+    case "get":
+      mockInstance = axios.get;
+      break;
+    case "delete":
+      mockInstance = axios.delete;
+      break;
+
+    default:
+      mockInstance = axios.post;
+      break;
+  }
+  if (Array.isArray(resp?.reqParams)) {
+    try {
+      expect(mockInstance).toHaveBeenCalledWith(...resp.reqParams);
+    } catch (error) {
+      logger.error(`Validate request parameters error ${resp.type} for mock axios client: ${error}`)
+    }
+  }
+}
+
+module.exports = { formAxiosMock, validateMockAxiosClientReqParams };

__tests__/deleteUsers/README.md

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+# DeleteUsers Tests
+
+All the tests data for deleteUsers are to be present in __tests__/data/deleteUsers/${destination}/
+
+### Files and their significance
+  - __`handler_input.json`__ - Input data for  `handleDeletionOfUsers` function in `versionedRouter.js`(alias for `_deleteUsers_proxy_input.json`)
+  - __`handler_output.json`__ - Output of `handleDeletionOfUsers` function in `versionedRouter.js`(alias for `_deleteUsers_proxy_output.json`)
+  - __`nw_client_data.json`__ - the mock http responses(An example can be seen in the case of `ga`)
+
+### Fields in new files
+
+#### nw_client_data.json
+
+- Type: Array<Array<object>>
+- The array of object is how many responses have to be sent back
+- Each of the object contains below mentioned fields
+   - type:
+     - Indicates what type of http client invocation it is
+     - Recommended to be sent
+     - Supported values: 
+       - post
+       - get
+       - delete
+       - constructor
+     - if nothing is mentioned, `post` is considered by default
+   - reqParams:
+     - Type: Array<any>
+     - Optional
+     - Indicates the expected arguments that are to be sent to the http client instance
+     - We would `recommend` to also add this as part of your `nw_client_data.json`
+   - response:
+     - Type: object
+     - Required
+     - The response that needs to be returned from the http client

__tests__/deleteUsers/data/ga/handler_input.json

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+[
+  {
+    "getValue": {
+      "x-rudder-dest-info": "{\"secret\": { \"access_token\": \"valid_token\" }}"
+    },
+    "request": {
+      "body": [
+        {
+          "destType": "GA",
+          "userAttributes": [
+            {
+              "userId": "test_user_1"
+            },
+            {
+              "userId": "test_user_2"
+            }
+          ],
+          "config": {
+            "trackingID": "UA-123456789-5",
+            "useNativeSDK": false
+          }
+        }
+      ]
+    }
+  },
+  {
+    "getValue": {
+      "x-rudder-dest-info": "{\"secret\": { \"access_token\": \"expired_token\" }}"
+    },
+    "request": {
+      "body": [
+        {
+          "destType": "GA",
+          "userAttributes": [
+            {
+              "userId": "test_user_3"
+            },
+            {
+              "userId": "test_user_4"
+            }
+          ],
+          "config": {
+            "trackingID": "UA-123456789-6",
+            "useNativeSDK": false
+          }
+        }
+      ]
+    }
+  }
+]

__tests__/deleteUsers/data/ga/handler_output.json

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+[
+  [
+    {
+      "statusCode": 200,
+      "status": "successful"
+    }
+  ],
+  [
+    {
+      "statusCode": 500,
+      "authErrorCategory": "REFRESH_TOKEN",
+      "error": "[GA] invalid credentials"
+    }
+  ]
+]

__tests__/deleteUsers/data/ga/nw_client_data.json

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+[
+  [
+    {
+      "type": "post",
+      "reqParams": [
+        "https://www.googleapis.com/analytics/v3/userDeletion/userDeletionRequests:upsert",
+        {
+          "kind": "analytics#userDeletionRequest",
+          "id": {
+            "type": "USER_ID",
+            "userId": "test_user_1"
+          },
+          "webPropertyId": "UA-123456789-5"
+        },
+        {
+          "headers": {
+            "Authorization": "Bearer valid_token",
+            "Accept": "application/json",
+            "Content-Type": "application/json"
+          }
+        }
+      ],
+      "response": {
+        "data": {
+          "kind": "analytics#userDeletionRequest",
+          "id": {
+            "type": "USER_ID",
+            "userId": "test_user_1"
+          },
+          "webPropertyId": "UA-123456789-5",
+          "deletionRequestTime": "2022-11-04T10:39:57.933Z"
+        },
+        "status": 200,
+        "statusText": "OK"
+      }
+    },
+    {
+      "type": "post",
+      "reqParams": [
+        "https://www.googleapis.com/analytics/v3/userDeletion/userDeletionRequests:upsert",
+        {
+          "kind": "analytics#userDeletionRequest",
+          "id": {
+            "type": "USER_ID",
+            "userId": "test_user_1"
+          },
+          "webPropertyId": "UA-123456789-5"
+        },
+        {
+          "headers": {
+            "Authorization": "Bearer valid_token",
+            "Accept": "application/json",
+            "Content-Type": "application/json"
+          }
+        }
+      ],
+      "response": {
+        "data": {
+          "kind": "analytics#userDeletionRequest",
+          "id": {
+            "type": "USER_ID",
+            "userId": "test_user_2"
+          },
+          "webPropertyId": "UA-123456789-5",
+          "deletionRequestTime": "2022-11-04T10:39:57.933Z"
+        },
+        "status": 200,
+        "statusText": "OK"
+      }
+    }
+  ],
+  [
+    {
+      "type": "post",
+      "reqParams": [
+        "https://www.googleapis.com/analytics/v3/userDeletion/userDeletionRequests:upsert",
+        {
+          "kind": "analytics#userDeletionRequest",
+          "id": {
+            "type": "USER_ID",
+            "userId": "test_user_3"
+          },
+          "webPropertyId": "UA-123456789-6"
+        },
+        {
+          "headers": {
+            "Authorization": "Bearer expired_token",
+            "Accept": "application/json",
+            "Content-Type": "application/json"
+          }
+        }
+      ],
+      "response": {
+        "data": {
+          "error": {
+            "code": 401,
+            "message": "Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.",
+            "status": "UNAUTHENTICATED"
+          }
+        },
+        "status": 200,
+        "statusText": "OK"
+      }
+    },
+    {
+      "type": "post",
+      "reqParams": [
+        "https://www.googleapis.com/analytics/v3/userDeletion/userDeletionRequests:upsert",
+        {
+          "kind": "analytics#userDeletionRequest",
+          "id": {
+            "type": "USER_ID",
+            "userId": "test_user_4"
+          },
+          "webPropertyId": "UA-123456789-6"
+        },
+        {
+          "headers": {
+            "Authorization": "Bearer expired_token",
+            "Accept": "application/json",
+            "Content-Type": "application/json"
+          }
+        }
+      ],
+      "response": {
+        "data": {
+          "error": {
+            "code": 401,
+            "message": "Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.",
+            "status": "UNAUTHENTICATED"
+          }
+        },
+        "status": 200,
+        "statusText": "OK"
+      }
+    }
+  ]
+]