Update command & tests for API error

src/commands/ai/models/list.ts

@@ -1,5 +1,6 @@
 import {ux} from '@oclif/core'
 import {ModelList} from '../../../lib/ai/types'
+import {CLIError} from '@oclif/core/lib/errors'
 import Command from '../../../lib/base'
 
 const displayModels = (models: any) => {
@@ -28,13 +29,14 @@ export default class List extends Command {
 
     const herokuAIClient = this.herokuAI
     const urlPath = '/available-models'
-    const {body: availableModels} = await herokuAIClient.get<ModelList>(urlPath)
 
-    if (availableModels.length > 0) {
+    try {
+      const {body: availableModels} = await herokuAIClient.get<ModelList>(urlPath)
       displayModels(availableModels)
       ux.log('\nSee https://devcenter.heroku.com/articles/rainbow-unicorn-princess-models for more info.')
-    } else {
-      ux.warn('Failed to retrieve the list of available models. Check the Heroku Status page https://status.heroku.com/ for system outages. After all incidents have resolved, try again. You can also see a list of models at https://devcenter.heroku.com/articles/rainbow-unicorn-princess-models.')
+    } catch (error) {
+      const {message} = error as CLIError
+      ux.error(message, {exit: 1})
     }
   }
 }

test/commands/ai/models/list.test.ts

@@ -3,7 +3,8 @@ import {stderr, stdout} from 'stdout-stderr'
 import Cmd from '../../../../src/commands/ai/models/list'
 import stripAnsi from '../../../helpers/strip-ansi'
 import {runCommand} from '../../../run-command'
-import {availableModels} from '../../../helpers/fixtures'
+import {availableModels, mockAPIErrors} from '../../../helpers/fixtures'
+import {CLIError} from '@oclif/core/lib/errors'
 import nock from 'nock'
 
 describe('ai:models:list', function () {
@@ -41,12 +42,16 @@ describe('ai:models:list', function () {
 
     herokuAI
       .get('/available-models')
-      .reply(200, [])
-
-    await runCommand(Cmd)
-      .then(() => expect(stdout.output).to.eq(''))
-      .then(() => expect(stripAnsi(stderr.output)).to.contain('Failed to retrieve the list of available models.'))
-      .then(() => expect(stripAnsi(stderr.output)).to.contain(statusURL))
-      .then(() => expect(stripAnsi(stderr.output)).to.contain(modelsDevCenterURL))
+      .reply(500, mockAPIErrors.modelsListErrors)
+
+    try {
+      await runCommand(Cmd)
+    } catch (error) {
+      const {message, oclif} = error as CLIError
+      expect(stripAnsi(message)).to.contains('Failed to retrieve the list of available models.')
+      expect(stripAnsi(message)).to.contains(statusURL)
+      expect(stripAnsi(message)).to.contains(modelsDevCenterURL)
+      expect(oclif.exit).to.equal(1)
+    }
   })
 })

test/helpers/fixtures.ts

@@ -31,6 +31,13 @@ export const availableModels = [
   },
 ]
 
+export const mockAPIErrors = {
+  modelsListErrors: {
+    id: 'error',
+    message: 'Failed to retrieve the list of available models. Check the Heroku Status page https://status.heroku.com/ for system outages. After all incidents have resolved, try again. You can also see a list of models at https://devcenter.heroku.com/articles/rainbow-unicorn-princess-models.',
+  },
+}
+
 export const addon1: Heroku.AddOn = {
   addon_service: {
     id: '4b46be3f-d0e6-4b3f-b616-0a857115d71d',