Dante caa6f89436 test(assets): add property-based tests for asset utility functions (#10619)
## Summary

Add property-based tests (using `fast-check`) for asset-related pure
utility functions, complementing existing example-based unit tests with
algebraic invariant checks across thousands of randomized inputs.

Fixes #10617

## Changes

- **What**: 4 new `*.property.test.ts` files covering
`assetFilterUtils`, `assetSortUtils`, `useAssetSelection`, and
`useOutputStacks` — 32 property-based tests total

## Why property-based testing (fast-check)?

### Gap in existing tests

The existing example-based unit tests (53 tests across 3 files) verify
behavior for **hand-picked inputs** — specific category names, known
sort orderings, fixed asset lists. This leaves two blind spots:

1. **Edge-case discovery**: Example tests only cover cases the author
anticipates. Property tests generate hundreds of randomized inputs per
run, probing boundaries the author didn't consider (e.g., empty strings,
single-char names, deeply nested tag paths, assets with `undefined`
metadata fields).

2. **Algebraic invariants**: Certain guarantees should hold for **all**
inputs, not just the handful tested. For example:
- "Filtering always produces a subset" — impossible to violate with 5
examples, easy to violate in production with unexpected metadata shapes
- "Sorting is idempotent" — an unstable sort bug would only surface with
specific duplicate patterns
- "Reconciled selection IDs are always within visible assets" — a
set-intersection bug might only appear with specific overlap patterns
between selection and visible sets

3. **No test coverage for `useOutputStacks`**: The composable had zero
tests before this PR.

### What these tests verify (invariant catalog)

| Module | # Properties | Key invariants |
|--------|-------------|----------------|
| `assetFilterUtils` | 10 | Filter result ⊆ input; `"all"` is identity;
ownership partitions into disjoint my/public; empty constraint is
identity |
| `assetSortUtils` | 8 | Never mutates input; output is permutation of
input; idempotent (sort∘sort = sort); adjacent pairs satisfy comparator;
`"default"` preserves order |
| `useAssetSelection` | 7 | After reconcile: selected ⊆ visible;
reconcile never adds new IDs; superset preserves all; empty visible
clears; `getOutputCount` ≥ 1; `getTotalOutputCount` ≥ len(assets) |
| `useOutputStacks` | 7 | Collapsed count = input count; items reference
input assets; unique keys; selectableAssets length = assetItems length;
no collapsed child flags; reactive ref updates |

### Quantitative impact

Each property runs 100 iterations by default → **3,200 randomized inputs
per test run** vs 53 hand-picked examples in existing tests.

**Coverage delta** (v8, measured against target modules):

| Module | Metric | Before (53 tests) | After (+32 property) | Delta |
|--------|--------|-------------------|---------------------|-------|
| `useAssetSelection.ts` | Branch | 76.92% | 94.87% | **+17.95pp** |
| `useAssetSelection.ts` | Stmts | 82.50% | 90.00% | **+7.50pp** |
| `useAssetSelection.ts` | Lines | 81.69% | 88.73% | **+7.04pp** |
| `useOutputStacks.ts` | Stmts | 0% | 37.50% | **+37.50pp** (new) |
| `useOutputStacks.ts` | Funcs | 0% | 75.00% | **+75.00pp** (new) |
| `assetFilterUtils.ts` | All | 97.5%+ | 97.5%+ | maintained |
| `assetSortUtils.ts` | All | 100% | 100% | maintained |

### Prior art

Follows the established pattern from
`src/platform/workflow/persistence/base/draftCacheV2.property.test.ts`.

## Review Focus

- Are the chosen invariants correct and meaningful (not just
change-detector tests)?
- Are the `fc.Arbitrary` generators representative of real-world asset
data shapes?

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10619-test-assets-add-property-based-tests-for-asset-utility-functions-3306d73d3650816985ebcd611bbe0837)
by [Unito](https://www.unito.io)
2026-03-28 10:26:55 +09:00
2026-03-26 19:56:32 -07:00
2026-01-27 17:59:19 -08:00

ComfyUI_frontend

Official front-end implementation of ComfyUI.

Website Discord Matrix

Release Schedule

The project follows a structured release process for each minor version, consisting of three distinct phases:

  1. Development Phase - 2 weeks

    • Active development of new features
    • Code changes merged to the development branch
  2. Feature Freeze - 2 weeks

    • No new features accepted
    • Only bug fixes are cherry-picked to the release branch
    • Testing and stabilization of the codebase
  3. Publication

    • Release is published at the end of the freeze period
    • Version is finalized and made available to all users

Nightly Releases

Nightly releases are published daily at https://github.com/Comfy-Org/ComfyUI_frontend/releases.

To use the latest nightly release, add the following command line argument to your ComfyUI launch script:

--front-end-version Comfy-Org/ComfyUI_frontend@latest

Overlapping Release Cycles

The development of successive minor versions overlaps. For example, while version 1.1 is in feature freeze, development for version 1.2 begins simultaneously. Each feature has approximately 4 weeks from merge to ComfyUI stable release (2 weeks on main, 2 weeks frozen on RC).

Example Release Cycle

Week Date Range Version 1.1 Version 1.2 Version 1.3 Patch Releases
1-2 Mar 1-14 Development - - -
3-4 Mar 15-28 Feature Freeze Development - 1.1.0 through 1.1.13 (daily)
5-6 Mar 29-Apr 11 Released Feature Freeze Development 1.1.14+ (daily)
1.2.0 through 1.2.13 (daily)
7-8 Apr 12-25 - Released Feature Freeze 1.2.14+ (daily)
1.3.0 through 1.3.13 (daily)

Release Summary

Major features

v1.5: Native translation (i18n)

ComfyUI now includes built-in translation support, replacing the need for third-party translation extensions. Select your language in Comfy > Locale > Language to translate the interface into English, Chinese (Simplified), Russian, Japanese, Korean, or Arabic. This native implementation offers better performance, reliability, and maintainability compared to previous solutions.

More details available here: https://blog.comfy.org/p/native-localization-support-i18n

v1.4: New mask editor

https://github.com/Comfy-Org/ComfyUI_frontend/pull/1284 implements a new mask editor.

image

v1.3.22: Integrated server terminal

Press Ctrl + ` to toggle integrated terminal.

https://github.com/user-attachments/assets/eddedc6a-07a3-4a83-9475-63b3977f6d94

v1.3.7: Keybinding customization

Basic UI

image

Reset button

image

Edit Keybinding

image image

rec.webm

v1.2.4: Node library sidebar tab

Drag & Drop

https://github.com/user-attachments/assets/853e20b7-bc0e-49c9-bbce-a2ba7566f92f

Filter

https://github.com/user-attachments/assets/4bbca3ee-318f-4cf0-be32-a5a5541066cf

v1.2.0: Queue/History sidebar tab

https://github.com/user-attachments/assets/86e264fe-4d26-4f07-aa9a-83bdd2d02b8f

QoL changes

v1.3.32: **Litegraph** Nested group

https://github.com/user-attachments/assets/f51adeb1-028e-40af-81e4-0ac13075198a

v1.3.24: **Litegraph** Group selection

https://github.com/user-attachments/assets/e6230a94-411e-4fba-90cb-6c694200adaa

v1.3.4: **Litegraph** Auto widget to input conversion

Dropping a link of correct type on node widget will automatically convert the widget to input.

rec.webm

v1.3.4: **Litegraph** Canvas pan mode

The canvas becomes readonly in pan mode. Pan mode is activated by clicking the pan mode button on the canvas menu or by holding the space key.

rec.webm

v1.2.62: **Litegraph** Show optional input slots as donuts

GYEIRidb0AYGO-v

v1.2.44: **Litegraph** Double click group title to edit

https://github.com/user-attachments/assets/5bf0e2b6-8b3a-40a7-b44f-f0879e9ad26f

v1.2.39: **Litegraph** Group selected nodes with Ctrl + G

https://github.com/user-attachments/assets/7805dc54-0854-4a28-8bcd-4b007fa01151

v1.2.38: **Litegraph** Double click node title to edit

https://github.com/user-attachments/assets/d61d5d0e-f200-4153-b293-3e3f6a212b30

v1.1.8: **Litegraph** hides text overflow on widget value

https://github.com/user-attachments/assets/5696a89d-4a47-4fcc-9e8c-71e1264943f2

Developer APIs

v1.6.13: prompt/confirm/alert replacements for ComfyUI desktop

Several browser-only APIs are not available in ComfyUI desktop's electron environment.

  • window.prompt
  • window.confirm
  • window.alert

Please use the following APIs as replacements.

// window.prompt
window['app'].extensionManager.dialog
  .prompt({
    title: 'Test Prompt',
    message: 'Test Prompt Message'
  })
  .then((value: string) => {
    // Do something with the value user entered
  })

image

// window.confirm
window['app'].extensionManager.dialog
  .confirm({
    title: 'Test Confirm',
    message: 'Test Confirm Message'
  })
  .then((value: boolean) => {
    // Do something with the value user entered
  })

image

// window.alert
window['app'].extensionManager.toast.addAlert('Test Alert')

image

v1.3.34: Register about panel badges
app.registerExtension({
  name: 'TestExtension1',
  aboutPageBadges: [
    {
      label: 'Test Badge',
      url: 'https://example.com',
      icon: 'pi pi-box'
    }
  ]
})

image

v1.3.22: Register bottom panel tabs
app.registerExtension({
  name: 'TestExtension',
  bottomPanelTabs: [
    {
      id: 'TestTab',
      title: 'Test Tab',
      type: 'custom',
      render: (el) => {
        el.innerHTML = '<div>Custom tab</div>'
      }
    }
  ]
})

image

v1.3.22: New settings API

Legacy settings API.

// Register a new setting
app.ui.settings.addSetting({
  id: 'TestSetting',
  name: 'Test Setting',
  type: 'text',
  defaultValue: 'Hello, world!'
})

// Get the value of a setting
const value = app.ui.settings.getSettingValue('TestSetting')

// Set the value of a setting
app.ui.settings.setSettingValue('TestSetting', 'Hello, universe!')

New settings API.

// Register a new setting
app.registerExtension({
  name: 'TestExtension1',
  settings: [
    {
      id: 'TestSetting',
      name: 'Test Setting',
      type: 'text',
      defaultValue: 'Hello, world!'
    }
  ]
})

// Get the value of a setting
const value = app.extensionManager.setting.get('TestSetting')

// Set the value of a setting
app.extensionManager.setting.set('TestSetting', 'Hello, universe!')
v1.3.7: Register commands and keybindings

Extensions can call the following API to register commands and keybindings. Do note that keybindings defined in core cannot be overwritten, and some keybindings are reserved by the browser.

app.registerExtension({
  name: 'TestExtension1',
  commands: [
    {
      id: 'TestCommand',
      function: () => {
        alert('TestCommand')
      }
    }
  ],
  keybindings: [
    {
      combo: { key: 'k' },
      commandId: 'TestCommand'
    }
  ]
})
v1.3.1: Extension API to register custom topbar menu items

Extensions can call the following API to register custom topbar menu items.

app.registerExtension({
  name: 'TestExtension1',
  commands: [
    {
      id: 'foo-id',
      label: 'foo',
      function: () => {
        alert(1)
      }
    }
  ],
  menuCommands: [
    {
      path: ['ext', 'ext2'],
      commands: ['foo-id']
    }
  ]
})

image

v1.2.27: Extension API to add toast messagei

Extensions can call the following API to add toast messages.

app.extensionManager.toast.add({
  severity: 'info',
  summary: 'Loaded!',
  detail: 'Extension loaded!',
  life: 3000
})

Documentation of all supported options can be found here: https://primevue.org/toast/#api.toast.interfaces.ToastMessageOptions

image

v1.2.4: Extension API to register custom sidebar tab

Extensions now can call the following API to register a sidebar tab.

app.extensionManager.registerSidebarTab({
  id: 'search',
  icon: 'pi pi-search',
  title: 'search',
  tooltip: 'search',
  type: 'custom',
  render: (el) => {
    el.innerHTML = '<div>Custom search tab</div>'
  }
})

The list of supported icons can be found here: https://primevue.org/icons/#list

We will support custom icons later.

image

v1.10.9: Selection Toolbox API

Extensions can register commands that appear in the selection toolbox when specific items are selected on the canvas.

app.registerExtension({
  name: 'TestExtension1',
  commands: [
    {
      id: 'test.selection.command',
      label: 'Test Command',
      icon: 'pi pi-star',
      function: () => {
        // Command logic here
      }
    }
  ],
  // Return an array of command IDs to show in the selection toolbox
  // when an item is selected
  getSelectionToolboxCommands: (selectedItem) => ['test.selection.command']
})

The selection toolbox will display the command button when items are selected: Image

Contributing

We welcome contributions to ComfyUI Frontend! Please see our Contributing Guide for:

  • Ways to contribute (code, documentation, testing, community support)
  • Development setup and workflow
  • Code style guidelines
  • Testing requirements
  • How to submit pull requests
  • Backporting fixes to release branches

Development

For detailed development setup, testing procedures, and technical information, please refer to CONTRIBUTING.md.

i18n

See locales/README.md for details.

Storybook

See .storybook/README.md for component development and visual testing documentation.

Troubleshooting

For comprehensive troubleshooting and technical support, please refer to our official documentation:

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Official front-end implementation of ComfyUI
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