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    Extend Firebase Test Lab with Cloud Functions

    Import the required modules

    To get started, import the modules required for handling Firebase Test Lab events:

    Node.js

       
 // The Cloud Functions for Firebase SDK to set up triggers and logging. 
 const 
  
 { 
 onTestMatrixCompleted 
 } 
  
 = 
  
 require 
 ( 
 "firebase-functions/testLab" 
 ); 
 const 
  
 { 
 logger 
 } 
  
 = 
  
 require 
 ( 
 "firebase-functions" 
 );

    Python

      # The Cloud Functions for Firebase SDK to set up triggers and logging. 
 from 
  
 firebase_functions 
  
 import 
 test_lab_fn 
 , 
 params 
 # The requests library to send web requests to Slack. 
 import 
  
 requests

    Trigger a function on TestMatrix completion

    To trigger a Firebase Test Lab function, define a handler for the test matrix completion event. In this example, the function triggers on test completion, retrieves the test matrix data from the CloudEvent object, and sends the corresponding test results to a Slack channel:

    Node.js

      exports 
 . 
 posttestresultstoslack 
  
 = 
  
 onTestMatrixCompleted 
 ( 
  
 { 
 secrets 
 : 
  
 [ 
 "SLACK_WEBHOOK_URL" 
 ]}, 
  
 async 
  
 ( 
 event 
 ) 
  
 = 
>  
 { 
  
 // Obtain Test Matrix properties from the CloudEvent 
  
 const 
  
 { 
 testMatrixId 
 , 
  
 state 
 , 
  
 outcomeSummary 
 } 
  
 = 
  
 event 
 . 
 data 
 ; 
  
 // Create the title of the message 
  
 const 
  
 title 
  
 = 
  
 ` 
 ${ 
 getSlackmoji 
 ( 
 state 
 ) 
 } 
  
 ${ 
 getSlackmoji 
 ( 
  
 outcomeSummary 
 , 
  
 ) 
 } 
  
 ${ 
 testMatrixId 
 } 
 ` 
 ; 
  
 // Create the details of the message 
  
 const 
  
 details 
  
 = 
  
 `Status: * 
 ${ 
 state 
 } 
 * 
 ${ 
 getSlackmoji 
 ( 
  
 state 
 , 
  
 ) 
 } 
 \nOutcome: * 
 ${ 
 outcomeSummary 
 } 
 * 
 ${ 
 getSlackmoji 
 ( 
 outcomeSummary 
 ) 
 } 
 ` 
 ; 
  
 // Post the message to slack 
  
 const 
  
 slackResponse 
  
 = 
  
 await 
  
 postToSlack 
 ( 
 title 
 , 
  
 details 
 ); 
  
 // Log the response 
  
 logger 
 . 
 log 
 ( 
 slackResponse 
 ); 
  
 });

    Python

      @test_lab_fn 
 . 
 on_test_matrix_completed 
 ( 
 secrets 
 = 
 [ 
 "SLACK_WEBHOOK_URL" 
 ]) 
 def 
  
 posttestresultstoslack 
 ( 
 event 
 : 
 test_lab_fn 
 . 
 CloudEvent 
 [ 
 test_lab_fn 
 . 
 TestMatrixCompletedData 
 ], 
 ) 
 - 
> None 
 : 
  
 """Posts a test matrix result to Slack.""" 
 # Obtain Test Matrix properties from the CloudEvent 
 test_matrix_id 
 = 
 event 
 . 
 data 
 . 
 test_matrix_id 
 state 
 = 
 event 
 . 
 data 
 . 
 state 
 outcome_summary 
 = 
 event 
 . 
 data 
 . 
 outcome_summary 
 # Create the title of the message 
 title 
 = 
 f 
 " 
 { 
 slackmoji 
 ( 
 state 
 ) 
 } 
  
 { 
 slackmoji 
 ( 
 outcome_summary 
 ) 
 } 
  
 { 
 test_matrix_id 
 } 
 " 
 # Create the details of the message 
 details 
 = 
 ( 
 f 
 "Status: * 
 { 
 state 
 } 
 * 
 { 
 slackmoji 
 ( 
 state 
 ) 
 } 
 \n 
 " 
 f 
 "Outcome: * 
 { 
 outcome_summary 
 } 
 * 
 { 
 slackmoji 
 ( 
 outcome_summary 
 ) 
 } 
 " 
 ) 
 # Post the message to Slack 
 response 
 = 
 post_to_slack 
 ( 
 title 
 , 
 details 
 ) 
 # Log the response 
 print 
 ( 
 response 
 . 
 status_code 
 , 
 response 
 . 
 text 
 )

    Access client details

    Test matrices may be created from different sources or workflows. It is therefore often desirable to create functions that perform different actions based on the source or other important context of the test. To help with this, gcloud allows you to pass arbitrary information when starting a test that can be accessed later in your function. For example:

     gcloud beta firebase test android run \
    --app=path/to/app.apk \
    --client-details testType=pr,link=<path/to/pull-request>

    And then to access the information in your function:

    Node.js

      const 
  
 testType 
  
 = 
  
 event 
 . 
 data 
 . 
 clientInfo 
 . 
 details 
 . 
 testType 
 ; 
 const 
  
 link 
  
 = 
  
 event 
 . 
 data 
 . 
 clientInfo 
 . 
 details 
 . 
 link 
 ;

    Python

      test_type 
 : 
 str 
 | 
 None 
 = 
 event 
 . 
 data 
 . 
 client_info 
 . 
 details 
 . 
 get 
 ( 
 "testType" 
 ) 
 link 
 : 
 str 
 | 
 None 
 = 
 event 
 . 
 data 
 . 
 client_info 
 . 
 details 
 . 
 get 
 ( 
 "link" 
 )
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