[ML] Increase API integration test coverage

[peteharverson]

Meta issue outlining the work to increase the API integration test coverage of the ML and Transform API routes.

• /api/ml/annotations (QN) ([ML] Add API integration testing for AD annotations #73068)
• /api/ml/anomaly_detectors
  • GET /api/ml/anomaly_detectors (DA) ([ML] API integration tests for GET anomaly detectors endpoints #65828)
  • GET /api/ml/anomaly_detectors/_stats (DA) ([ML] API integration tests for GET anomaly detectors endpoints #65828)
  • PUT /api/ml/anomaly_detectors ([ML] Adds API integration tests for data viz and fields endpoints #64165)
• /api/ml/calendars (QN) ([ML] Add API integration tests for /filters and /calendars #72564)
• /api/ml/data_frame/analytics (MA)
  • analytics jobs
    • GET /api/ml/data_frame/analytics ([ML] API integration tests for GET data frame analytics endpoints #66136)
    • GET /api/ml/data_frame/analytics/_stats ([ML] API integration tests for GET data frame analytics endpoints #66136)
    • PUT /api/ml/data_frame/analytics/{analyticsId} ([ML] Data Frame Analytics: adds api integration tests for job creation #92101)
    • POST /api/ml/data_frame/analytics/_explain ([ML] API Integration tests: adds test for Data Frame Analytics explain endpoint #98060)
    • POST /api/ml/data_frame/_evaluate ([ML] API Integration tests: adds test for Data Frame Analytics evaluate endpoint #97856)
    • POST /api/ml/data_frame/analytics/{analyticsId}/_stop ([ML] Data Frame Analytic: adds api integration tests for _start and _stop endpoints #92532)
    • POST /api/ml/data_frame/analytics/{analyticsId}/_start ([ML] Data Frame Analytic: adds api integration tests for _start and _stop endpoints #92532)
    • POST /api/ml/data_frame/analytics/{analyticsId}/_update ([ML] API integration tests for UPDATE data frame analytics endpoint #72710)
    • DELETE /api/ml/data_frame/analytics/{analyticsId} ([ML] Add optional ability to delete target index and index pattern when deleting DFA job #66934)
  • map
    • GET /data_frame/analytics/map/{id} ([ML] Add api integration test for analytics map endpoint  #105531)
  • trained models
    • GET /api/ml/trained_models/{modelId?} ([ML] Add integration tests for trained_models API  #104819)
    • GET /api/ml/trained_models/{modelId}/_stats ([ML] Add integration tests for trained_models API  #104819)
    • GET /api/ml/trained_models/{modelId}/pipelines ([ML] Add integration tests for trained_models API  #104819)
    • DELETE /api/ml/trained_models/{modelId} ([ML] Add integration tests for trained_models API  #104819)
• /api/ml/data_visualizer ([ML] Adds API integration tests for data viz and fields endpoints #64165)
• /api/ml/fields_service ([ML] Adds API integration tests for data viz and fields endpoints #64165)
• /api/ml/filters (QN) ([ML] Add API integration tests for /filters and /calendars #72564)
• /api/ml/indices (JG) [ML] Adding tests for ML's field caps endpoint #104315
• /api/ml/job_audit_messages (DA) ([ML] Add job audit messages API integration tests #110793)
• /api/ml/jobs (PH, JG)
  • /api/ml/jobs/categorization_field_examples
  • /api/ml/jobs_summary ([ML] Adds API integration tests for data viz and fields endpoints #64165)
  • /api/ml/jobs/datafeed_preview ([ML] Adding additional runtime mapping checks #94760)
  • /api/ml/jobs/force_start_datafeeds ([ML] Add API integration tests for start and stop datafeeds #110961)
  • /api/ml/jobs/stop_datafeeds ([ML] Add API integration tests for start and stop datafeeds #110961)
  • /api/ml/jobs/deleting_jobs_tasks (too high risk of being flaky as job likely to have been deleted before tests complete)
  • /api/ml/jobs/close_jobs ([ML] Adding additional job service endpoint tests #66892)
  • /api/ml/jobs/delete_jobs ([ML] Adding additional job service endpoint tests #66892)
• /api/ml/datafeeds
  • GET /api/ml/datafeeds
  • GET /api/ml/datafeeds/:datafeedId
  • GET /api/ml/datafeeds/_stats
  • GET /api/ml/datafeeds/:datafeedId/_stats
• /api/ml/modules ([ML] API integration tests - add recognize and setup module tests #61793)
  • /api/ml/modules/get_module
  • /api/ml/modules/recognize
    • uptime_heartbeat [ML] Functional tests - recognize and setup module tests for heartbeat and auditbeat #83796
    • auditbeat_process_hosts_ecs [ML] Functional tests - recognize and setup module tests for heartbeat and auditbeat #83796
  • /api/ml/modules/setup
• /api/ml/notification_settings (removed in 7.13 [ML] removing unused notification settings endpoint #98109 as no longer used)
• /api/ml/results
  • /api/ml/results/anomalies_table_data (DA) ([ML] API integration tests for fetching anomalies table data #65844)
• /api/ml/validate (DA)
  • /api/ml/validate/calculate_model_memory_limit
  • /api/ml/validate/cardinality ([ML] Cardinality validation API integration tests  #65971)
  • /api/ml/validate/estimate_bucket_span
  • /api/ml/validate/job ([ML] API integration tests for job validation #66265)
• system routes
  • /api/ml/ml_capabilities (JG) ([ML] Adding ml_capabilities api tests #92786)
• /api/transform (WR) ([ML] Transforms: API schemas and integration tests #75164)
  • /api/transform/transforms
  • /api/transform/transforms/{transformId}
  • /api/transform/transforms/{transformId}/_update
  • /api/transform/transforms/_nodes ([ML] Transforms: Fixes missing number of transform nodes and error reporting in stats bar. #93956)
  • /api/transform/transforms/_preview
  • /api/transform/transforms/_stats
  • /api/transform/delete_transforms ([ML] Transforms: Add ability to delete dest index & index pattern when deleting transform job #67922)
  • /api/transform/start_transforms
  • /api/transform/stop_transforms
• saved objects [ML] Initial API integration tests for ML jobs in spaces #84789
  • /api/ml/saved_objects/status
  • /api/ml/saved_objects/sync
  • /api/ml/saved_objects/initialize
  • /api/ml/saved_objects/assign_job_to_space
  • /api/ml/saved_objects/remove_job_from_space
  • /api/ml/saved_objects/jobs_spaces
  • /api/ml/saved_objects/can_delete_job
• Jobs in spaces [ML] Initial API integration tests for ML jobs in spaces #84789
  • anomaly_detectors
    • GET /api/ml/anomaly_detectors
    • PUT /api/ml/anomaly_detectors
    • POST /api/ml/anomaly_detectors (open)
    • POST /api/ml/anomaly_detectors (close)
    • DELETE /api/ml/anomaly_detectors
  • data_frame/analytics
    • GET /api/ml/data_frame/analytics
    • GET /api/ml/data_frame/analytics (stats)
    • POST /api/ml/data_frame/analytics (update)
    • DELETE /api/ml/data_frame/analytics
  • jobs
    • POST /api/ml/jobs/close_jobs
    • POST /api/ml/jobs/delete_jobs
    • POST /api/ml/jobs/jobs_exist
    • POST /api/ml/jobs/jobs_summary
• licenses
  • basic license [ML] Functional tests - add basic license tests #82147

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[walterra]

For reference, posting a link here with possible API integration test scenarios for anomaly detection/spaces: #82415 (comment)

[peteharverson]

Closing issue as tests have been added for all the endpoints listed for the initial coverage. Separate issues will be created for each release to increase the coverage further.