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MCP Server Part 9: Background callbacks #1362

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MCP Server Part 9: Background callbacks

MCP Server Part 9: Background callbacks #1362

Triggered via pull request May 7, 2026 17:36
@KoolADE85KoolADE85
opened #3766
feature/mcp-background-callbacks
Status Failure
Total duration 18m 31s
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testing.yml

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Matrix: html-test
Matrix: background-callbacks
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41 errors, 16 warnings, and 1 notice
Lint & Unit Tests (Python 3.12)
Process completed with exit code 1.
Typing Tests
Process completed with exit code 1.
Run Background & Async Callback Tests (Python 3.12)
Process completed with exit code 1.
Run Background & Async Callback Tests (Python 3.9)
Process completed with exit code 1.
pytest ► bgtests.tests.background_callback.test_basic_long_callback001 ► test_lcbc001_fast_input[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f0404eb9d30>
pytest ► bgtests.tests.background_callback.test_basic_long_callback002 ► test_lcbc002_long_callback_running[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040e49a930>
pytest ► bgtests.tests.background_callback.test_basic_long_callback003 ► test_lcbc003_long_callback_running_cancel[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040e330a40>
pytest ► bgtests.tests.background_callback.test_basic_long_callback004 ► test_lcbc004_long_callback_progress[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040e1dde80>
pytest ► bgtests.tests.background_callback.test_basic_long_callback006 ► test_lcbc006_long_callback_caching_multi[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040df64140>
pytest ► bgtests.tests.background_callback.test_basic_long_callback007 ► test_lcbc007_validation_layout[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040dc9e390>
pytest ► bgtests.tests.background_callback.test_basic_long_callback008 ► test_lcbc008_long_callbacks_error[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040da063c0>
pytest ► bgtests.tests.background_callback.test_basic_long_callback009 ► test_lcbc009_short_interval[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040da87680>
pytest ► bgtests.tests.background_callback.test_basic_long_callback010 ► test_lcbc010_side_updates[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040d802030>
pytest ► bgtests.tests.background_callback.test_basic_long_callback011 ► test_lcbc011_long_pattern_matching[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040d9a3650>
pytest ► bgtests.tests.background_callback.test_basic_long_callback012 ► test_lcbc012_long_callback_ctx[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: dash_duo = <dash.testing.composite.DashComposite object at 0x7f040d6da030>
pytest ► bgtests.tests.background_callback.test_basic_long_callback013 ► test_lcbc013_unordered_state_input[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040d619c70>
pytest ► bgtests.tests.background_callback.test_basic_long_callback014 ► test_lcbc014_progress_delete[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040d67ab70>
pytest ► bgtests.tests.background_callback.test_basic_long_callback015 ► test_lcbc015_diff_outputs_same_func[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040d3ae2a0>
pytest ► bgtests.tests.background_callback.test_basic_long_callback016 ► test_lcbc016_multi_page_cancel[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f0410431970>
pytest ► bgtests.tests.background_callback.test_basic_long_callback017 ► test_lcbc017_long_callback_set_props[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040d1bf980>
pytest ► bgtests.tests.background_callback.test_basic_long_callback018 ► test_lcbc018_background_callback_on_error[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040d0853d0>
pytest ► bgtests.tests.background_callback.test_ctx_cookies ► test_lcbc019_ctx_cookies[celery]: test-results/background-test-results-py3.12/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.12/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f040cf81280>
pytest ► bgtests.tests.background_callback.test_basic_long_callback001 ► test_lcbc001_fast_input[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f958880a670>
pytest ► bgtests.tests.background_callback.test_basic_long_callback002 ► test_lcbc002_long_callback_running[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9591dfa3a0>
pytest ► bgtests.tests.background_callback.test_basic_long_callback003 ► test_lcbc003_long_callback_running_cancel[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9591e50e20>
pytest ► bgtests.tests.background_callback.test_basic_long_callback004 ► test_lcbc004_long_callback_progress[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9592ef4eb0>
pytest ► bgtests.tests.background_callback.test_basic_long_callback006 ► test_lcbc006_long_callback_caching_multi[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9592c1ec40>
pytest ► bgtests.tests.background_callback.test_basic_long_callback007 ► test_lcbc007_validation_layout[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9592911ac0>
pytest ► bgtests.tests.background_callback.test_basic_long_callback008 ► test_lcbc008_long_callbacks_error[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f95926c5b80>
pytest ► bgtests.tests.background_callback.test_basic_long_callback009 ► test_lcbc009_short_interval[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9592542f40>
pytest ► bgtests.tests.background_callback.test_basic_long_callback010 ► test_lcbc010_side_updates[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f95924dbd60>
pytest ► bgtests.tests.background_callback.test_basic_long_callback011 ► test_lcbc011_long_pattern_matching[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f95923b7d00>
pytest ► bgtests.tests.background_callback.test_basic_long_callback012 ► test_lcbc012_long_callback_ctx[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: dash_duo = <dash.testing.composite.DashComposite object at 0x7f95922826a0>
pytest ► bgtests.tests.background_callback.test_basic_long_callback013 ► test_lcbc013_unordered_state_input[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f95922121c0>
pytest ► bgtests.tests.background_callback.test_basic_long_callback014 ► test_lcbc014_progress_delete[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f95920e4970>
pytest ► bgtests.tests.background_callback.test_basic_long_callback015 ► test_lcbc015_diff_outputs_same_func[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f959200fd90>
pytest ► bgtests.tests.background_callback.test_basic_long_callback016 ► test_lcbc016_multi_page_cancel[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9591a4cb80>
pytest ► bgtests.tests.background_callback.test_basic_long_callback017 ► test_lcbc017_long_callback_set_props[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f959190db50>
pytest ► bgtests.tests.background_callback.test_basic_long_callback018 ► test_lcbc018_background_callback_on_error[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f9591817340>
pytest ► bgtests.tests.background_callback.test_ctx_cookies ► test_lcbc019_ctx_cookies[celery]: test-results/background-test-results-py3.9/junit_background.xml#L0
Failed test found in: test-results/background-test-results-py3.9/junit_background.xml Error: self = <dash.testing.composite.DashComposite object at 0x7f95916afac0>
Consolidated Test Report
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Main Dash Tests (Python 3.12, Group 1)
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Main Dash Tests (Python 3.8, Group 2)
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Main Dash Tests (Python 3.12, Group 2)
Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/download-artifact@v4, actions/setup-node@v4, actions/setup-python@v5, actions/upload-artifact@v4, browser-actions/setup-chrome@v1. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
Run Background & Async Callback Tests (Python 3.12)
Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/download-artifact@v4, actions/setup-node@v4, actions/setup-python@v5, actions/upload-artifact@v4, browser-actions/setup-chrome@v1. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
Run Background & Async Callback Tests (Python 3.9)
Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/download-artifact@v4, actions/setup-node@v4, actions/setup-python@v5, actions/upload-artifact@v4, browser-actions/setup-chrome@v1. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
Consolidated Test Report
Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/download-artifact@v4, dorny/test-reporter@v1. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/
Build on Windows
NOTICE: windows-2025 requests are being redirected to windows-2025-vs2026 by May 12, 2026

Artifacts

Produced during runtime
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