fix activeVersion is null issue when updating application failed

packages/lu/src/parser/lubuild/builder.ts

@@ -306,7 +306,7 @@ export class Builder {
   async updateApplication(currentApp: any, luBuildCore: LuBuildCore, recognizer: Recognizer, delayDuration: number, deleteOldVersion: boolean) {
     await delay(delayDuration)
     const appInfo = await luBuildCore.getApplicationInfo(recognizer.getAppId())
-    recognizer.versionId = appInfo.activeVersion
+    recognizer.versionId = appInfo.activeVersion || appInfo.endpoints.PRODUCTION.versionId
 
     await delay(delayDuration)
     const existingApp = await luBuildCore.exportApplication(recognizer.getAppId(), recognizer.versionId)

packages/luis/test/commands/luis/build.test.ts

@@ -792,4 +792,74 @@ describe('luis:build create a new application successfully with locale set to it
       expect(ctx.stdout).to.contain('publishing finished')
       expect(ctx.stdout.includes('personName is not available for the requested locale: it-it')).to.be.false
     })
+})
+
+describe('luis:build update application succeed when activeVersion is null', () => {
+  const existingLuisApp = require('./../../fixtures/testcases/lubuild/sandwich/luis/test(development)-sandwich.utteranceAdded.en-us.lu.json')
+  before(function () {
+    nock('https://westus.api.cognitive.microsoft.com')
+      .get(uri => uri.includes('apps'))
+      .reply(200, [{
+        name: 'test(development)-sandwich.en-us.lu',
+        id: 'f8c64e2a-8635-3a09-8f78-39d7adc76ec5'
+      }])
+
+    nock('https://westus.api.cognitive.microsoft.com')
+      .get(uri => uri.includes('apps'))
+      .reply(200, {
+        name: 'test(development)-sandwich.en-us.lu',
+        id: 'f8c64e2a-8635-3a09-8f78-39d7adc76ec5',
+        activeVersion: null,
+        endpoints: {
+          PRODUCTION: {
+            versionId: '0.1'
+          }
+        }
+      })
+
+    nock('https://westus.api.cognitive.microsoft.com')
+      .get(uri => uri.includes('export'))
+      .reply(200, existingLuisApp)
+
+    nock('https://westus.api.cognitive.microsoft.com')
+      .post(uri => uri.includes('import'))
+      .reply(201, '0.2')
+
+    nock('https://westus.api.cognitive.microsoft.com')
+      .post(uri => uri.includes('train'))
+      .reply(202, {
+        statusId: 2,
+        status: 'UpToDate'
+      })
+
+    nock('https://westus.api.cognitive.microsoft.com')
+      .get(uri => uri.includes('train'))
+      .reply(200, [{
+        modelId: '99999',
+        details: {
+          statusId: 0,
+          status: 'Success',
+          exampleCount: 0
+        }
+      }])
+
+    nock('https://westus.api.cognitive.microsoft.com')
+      .post(uri => uri.includes('publish'))
+      .reply(201, {
+        versionId: '0.2',
+        isStaging: true
+      })
+  })
+
+  test
+    .stdout()
+    .command(['luis:build', '--in', './test/fixtures/testcases/lubuild/sandwich/lufiles/sandwich.en-us.lu', '--authoringKey', uuidv1(), '--botName', 'test', '--log', '--suffix', 'development'])
+    .it('should update a luis application when activeVersion is null', ctx => {
+      expect(ctx.stdout).to.contain('Handling applications...')
+      expect(ctx.stdout).to.contain('creating version=0.2')
+      expect(ctx.stdout).to.contain('training version=0.2')
+      expect(ctx.stdout).to.contain('waiting for training for version=0.2')
+      expect(ctx.stdout).to.contain('publishing version=0.2')
+      expect(ctx.stdout).to.contain('publishing finished')
+    })
 })