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in a client script we have this try/catch we are trying to write tests but are having very little luck
```catch (e) {
      if (typeof log !== "undefined") {
        
        log.error({
          title: `rate checkup Failed `,
          details: e.message || JSON.stringify(e) || "No Meaningful message",
        });
      } else {
        console.log(
          `Rate checkup failed: ${
            e.message || JSON.stringify(e) || "No meaningful message"
          }`
        );
      }
    }
  }```

probably need to share more on the test side and what issues you are facing

```describe('shipmentrates function', () =&gt; {
  it('should log an error if <http://https.post|https.post> throws an error', () =&gt; {
    // Mock the error object
    const error = new Error('Network error');

    // Mock the <http://https.post|https.post> function to throw an error
    jest.spyOn(https, 'post').mockImplementation(() =&gt; { throw error; });

    // Spy on log.error
    jest.spyOn(log, 'error');

    // Call the function
    const result = shipment.shipmentrates(10, { shipaddress1: 'Address', city: 'City', state: 'State', zip: '12345' }, 'SKU');

    // Check if log.error is called with the correct parameters
    expect(log.error).toHaveBeenCalledWith({
      title: 'rate checkup Failed',
      details: error.message || JSON.stringify(error) || 'No Meaningful message',
    });

    // Restore the original implementation of <http://https.post|https.post>
    https.post.mockRestore();
  });
});```

Your test suite needs to mock the Log module and then export the mock to Jest's <https://archive.jestjs.io/docs/en/configuration#globals-object|globals>. Some <https://www.grzegorowski.com/how-to-mock-global-window-with-jest|examples> using Jest's global `global` object

Typically ends up looking something like
```const log = require('N/log')
jest.mock(log, ...)
global.log = log```

In the past I usually set up the Jest config file to automatically load my mocks of the implied modules (`log`, `util`, etc), but sadly I don't own that code so I can't share it offhand