Handle API returning 404 for Adjudications

In the event the API returns a 404 we would throw an unhandled exception
which would stop the user completing the referral.

This change ensures that we handle this scenario and throw for anything
else.

The UI already handles the scenario of the adjudications array being
empty, we so we pass an empty array in this case.

server/form-pages/apply/assess-placement-risks-and-needs/prison-information/adjudications.test.ts

@@ -5,6 +5,7 @@ import { adjudicationFactory, applicationFactory, personFactory } from '../../..
 import { itShouldHaveNextValue, itShouldHavePreviousValue } from '../../../shared-examples'
 import { PageBodyAdjudication, mapAdjudicationsForPageBody } from '../../../utils'
 import Adjudications, { adjudicationResponse } from './adjudications'
+import { SanitisedError } from '../../../../sanitisedError'
 
 jest.mock('../../../../services/personService')
 jest.mock('../../../utils')
@@ -66,6 +67,24 @@ describe('Adjudications', () => {
       expect(getAdjudicationsMock).toHaveBeenCalledWith(callConfig, application.person.crn)
       expect(mapAdjudicationsForPageBody).toHaveBeenCalledWith(apiAdjudications)
     })
+
+    it('sets the number of adjudications to 0 if none are found', async () => {
+      const err = <SanitisedError>{ data: { status: 404 } }
+      const getAdjudicationsMock = jest.fn().mockImplementation(() => {
+        throw err
+      })
+
+      const personService = createMock<PersonService>({
+        getAdjudications: getAdjudicationsMock,
+      })
+
+      const page = await Adjudications.initialize({}, application, callConfig, { personService })
+
+      expect(page.body).toEqual({ adjudications })
+
+      expect(getAdjudicationsMock).toHaveBeenCalledWith(callConfig, application.person.crn)
+      expect(mapAdjudicationsForPageBody).toHaveBeenCalledWith([])
+    })
   })
 
   itShouldHavePreviousValue(new Adjudications({}, application), 'dashboard')

server/form-pages/apply/assess-placement-risks-and-needs/prison-information/adjudications.ts

@@ -43,7 +43,15 @@ export default class Adjudications implements TasklistPage {
     callConfig: CallConfig,
     dataServices: DataServices,
   ) {
-    const adjudications = await dataServices.personService.getAdjudications(callConfig, application.person.crn)
+    let adjudications: Adjudication[] = []
+
+    try {
+      adjudications = await dataServices.personService.getAdjudications(callConfig, application.person.crn)
+    } catch (e) {
+      if (e?.data?.status !== 404) {
+        throw e
+      }
+    }
 
     const page = new Adjudications({ adjudications: mapAdjudicationsForPageBody(adjudications) }, application)