Files
Codeman/test/session-pane-exit-ui.test.ts
T
Codeman maintainer cbd1fa639d fix(tmux): merge-time fixes for the exited-agent report (#466)
- docs/wiki/The-Dashboard.md: the tab-appearance table gains the exited
  state (muted dot plus an `exited (137)` badge) and explains the bare
  `exited` variant.
- The detailed sidebar and rail no longer pair the muted dot with an "idle"
  pill: an exited session's pill reads "exited" (neutral styling) and its
  since stamp measures from the observed exit. This is a label override on
  the row model, not a new state, so SESSION_ACTIVITY_RANK and the home
  screen order are untouched, and a pending alert still keeps its own pill.
  The row signature includes the flag so the incremental path repaints it.
- The exited badge is aria-hidden like its sibling badges, and the exit is
  appended to the tab's aria-label in both render paths through one helper.
- test/tmux-manager.test.ts re-adds the junk-trailing-field parser case
  against parsePaneRows.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-23 11:40:27 +02:00

379 lines
17 KiB
TypeScript

/**
* @fileoverview The exited-agent badge on a session tab (Ark0N/Codeman#446).
*
* The server publishes `session.paneExit` when the agent inside a local tmux
* pane has exited while `remain-on-exit` kept the pane. These cover the three
* things the browser owns: turning that field into a label, getting the label
* onto and off a tab, and what colour the tab's status dot ends up once the
* exit, the alert rules and the rich rail's own rules have all had a say.
*
* The incremental render path is the only one a live session ever reaches.
* Going from live to exited adds and removes no tab, so the full rebuild never
* runs for it, which is why `applyPaneExitBadge()` is a named function rather
* than a block inside the render loop.
*
* Port: N/A
*/
import { readFileSync } from 'node:fs';
import { resolve } from 'node:path';
import { JSDOM } from 'jsdom';
import postcss from 'postcss';
import { describe, expect, it } from 'vitest';
describe('the exited-agent tab label', () => {
const appJs = readFileSync(resolve(import.meta.dirname, '../src/web/public/app.js'), 'utf8');
const load = <T>(name: string) => {
const source = appJs.match(new RegExp(`function ${name}\\([\\s\\S]*?\\n\\}`))?.[0];
if (!source) throw new Error(`${name} not found in app.js`);
return new Function(`${source}\nreturn ${name};`)() as T;
};
const paneExitLabel = load<(p: unknown) => string>('paneExitLabel');
it('renders nothing for an unknown answer, which must never read as alive', () => {
expect(paneExitLabel(undefined)).toBe('');
expect(paneExitLabel(null)).toBe('');
});
it('names the exit code', () => {
expect(paneExitLabel({ status: 137, at: 1 })).toBe('exited (137)');
});
it('shows a clean exit as 0 rather than hiding it', () => {
expect(paneExitLabel({ status: 0, at: 1 })).toBe('exited (0)');
});
it('names a signal death, which the maintainer wants kept on screen', () => {
expect(paneExitLabel({ signal: 9, at: 1 })).toBe('exited (signal 9)');
});
it('says only "exited" when tmux knew the pane died but not how', () => {
// Measured on tmux 3.2a: a SIGKILLed pane reports neither status nor signal.
// Showing that as "exited (0)" would make an unexplained death look clean.
expect(paneExitLabel({ at: 1 })).toBe('exited');
});
});
describe('the exited-agent badge in a tab', () => {
// The incremental render path is the only one a live session reaches: going
// from live to exited adds and removes no tab, so the full rebuild never runs
// for it. These drive that path's DOM work against a real tab element.
const appJs = readFileSync(resolve(import.meta.dirname, '../src/web/public/app.js'), 'utf8');
const source = [
appJs.match(/function paneExitLabel\([\s\S]*?\n\}/)?.[0],
appJs.match(/function paneExitAriaLabel\([\s\S]*?\n\}/)?.[0],
appJs.match(/function applyPaneExitBadge\([\s\S]*?\n\}/)?.[0],
].join('\n');
const dom = new JSDOM('<!DOCTYPE html><html><body></body></html>');
const applyPaneExitBadge = new Function('document', `${source}\nreturn applyPaneExitBadge;`)(dom.window.document) as (
tab: unknown,
paneExit: unknown
) => void;
const makeTab = () => {
const tab = dom.window.document.createElement('div');
tab.className = 'session-tab';
tab.setAttribute('aria-label', 'w1-case session');
tab.innerHTML = '<span class="tab-name" data-full-name="w1-case">w1-case</span>';
return tab;
};
const badge = (tab: { querySelector: (s: string) => { textContent: string | null } | null }) =>
tab.querySelector('.tab-exited-badge');
it('draws no badge while the answer is unknown', () => {
const tab = makeTab();
applyPaneExitBadge(tab, undefined);
expect(badge(tab)).toBeNull();
});
it('adds the badge after the name once the agent exits', () => {
const tab = makeTab();
applyPaneExitBadge(tab, { status: 137, at: 1 });
expect(badge(tab)?.textContent).toBe('exited (137)');
expect(tab.querySelector('.tab-name')?.nextElementSibling?.className).toBe('tab-exited-badge');
});
it('marks the badge data-i18n-skip, like the other generated status text', () => {
const tab = makeTab();
applyPaneExitBadge(tab, { status: 0, at: 1 });
expect(badge(tab)?.hasAttribute('data-i18n-skip')).toBe(true);
});
it('hides the badge from assistive technology, like its sibling badges', () => {
const tab = makeTab();
applyPaneExitBadge(tab, { status: 0, at: 1 });
expect(badge(tab)?.getAttribute('aria-hidden')).toBe('true');
});
it('carries the exit on the tab accessible name instead, and drops it again', () => {
// The tab's aria-label overrides its contents, so the badge alone would leave
// a screen reader announcing an exited tab exactly like a live one.
const tab = makeTab();
applyPaneExitBadge(tab, { status: 137, at: 1 });
expect(tab.getAttribute('aria-label')).toBe('w1-case session, agent exited (137)');
applyPaneExitBadge(tab, undefined);
expect(tab.getAttribute('aria-label')).toBe('w1-case session');
});
it('builds the full render path accessible name from the same helper', () => {
expect(appJs).toContain('aria-label="${escapeHtml(paneExitAriaLabel(name, paneExitBadge))}"');
expect(appJs).toContain('<span class="tab-exited-badge" data-i18n-skip aria-hidden="true">');
});
it('updates the text in place rather than stacking a second badge', () => {
const tab = makeTab();
applyPaneExitBadge(tab, { status: 0, at: 1 });
const first = badge(tab);
applyPaneExitBadge(tab, { status: 137, at: 2 });
expect(tab.querySelectorAll('.tab-exited-badge')).toHaveLength(1);
expect(badge(tab)).toBe(first);
expect(badge(tab)?.textContent).toBe('exited (137)');
});
it('marks the tab so the status dot can be quieted', () => {
// The dot renders from `status`, which stays `idle` or `busy` for an exited
// pane by design, so the tab carries the exit as a class and CSS does the
// rest. Without it a green or pulsing dot sits beside the badge.
const tab = makeTab();
applyPaneExitBadge(tab, { status: 0, at: 1 });
expect(tab.classList.contains('tab-agent-exited')).toBe(true);
});
it('unmarks the tab when the pane comes back', () => {
const tab = makeTab();
applyPaneExitBadge(tab, { status: 0, at: 1 });
applyPaneExitBadge(tab, undefined);
expect(tab.classList.contains('tab-agent-exited')).toBe(false);
});
it('removes the badge when the pane comes back', () => {
// The retraction half: a respawned pane must not keep reading "exited".
const tab = makeTab();
applyPaneExitBadge(tab, { status: 0, at: 1 });
applyPaneExitBadge(tab, undefined);
expect(badge(tab)).toBeNull();
});
it('is what the incremental render path calls', () => {
expect(appJs).toContain('applyPaneExitBadge(tab, session.paneExit)');
});
});
describe('the rich row pill of an exited session', () => {
// The detailed sidebar and rail classify rows through `_mobileOverviewState()`,
// which reads `status` and knows nothing about the exit, so without an override
// the muted dot sat beside a pill saying "idle".
const appJs = readFileSync(resolve(import.meta.dirname, '../src/web/public/app.js'), 'utf8');
const fn = (re: RegExp, name: string) => {
const m = appJs.match(re)?.[0];
if (!m) throw new Error(`${name} not found in app.js`);
return m;
};
type Row = { state: string; exited: boolean; pill: string; since: { key: string; at: number } | null };
const host = new Function(
`${fn(/function paneExitLabel\([\s\S]*?\n\}/, 'paneExitLabel')}
return {
${fn(/ {2}_sidebarRichPillLabel\(state\) \{[\s\S]*?\n {2}\}/, '_sidebarRichPillLabel')},
${fn(/ {2}_sidebarRichRow\(id, session\) \{[\s\S]*?\n {2}\}/, '_sidebarRichRow')},
_mobileOverviewState(session, hooks) {
if (hooks && hooks.has('permission_prompt')) return 'needs';
if (hooks && hooks.has('idle_prompt')) return 'waiting';
return session.status === 'busy' ? 'working' : 'idle';
},
_mobileOverviewSince(state, session) {
return { key: state, at: session.lastActivityAt };
},
};`
)() as { pendingHooks?: Map<string, Set<string>>; _sidebarRichRow: (id: string, s: unknown) => Row };
it('says exited, measured from when the exit was observed', () => {
const row = host._sidebarRichRow('s1', { status: 'idle', lastActivityAt: 5, paneExit: { status: 137, at: 42 } });
expect(row.state).toBe('idle');
expect(row.exited).toBe(true);
expect(row.pill).toBe('exited');
expect(row.since).toEqual({ key: 'exited', at: 42 });
});
it('keeps the classified state for sorting, so the home-screen order is unchanged', () => {
const row = host._sidebarRichRow('s1', { status: 'busy', lastActivityAt: 5, paneExit: { at: 42 } });
expect(row.state).toBe('working');
expect(row.pill).toBe('exited');
});
it('lets a pending permission dialog keep its own pill', () => {
host.pendingHooks = new Map([['s1', new Set(['permission_prompt'])]]);
try {
const row = host._sidebarRichRow('s1', { status: 'idle', lastActivityAt: 5, paneExit: { status: 0, at: 42 } });
expect(row.exited).toBe(false);
expect(row.pill).toBe('needs you');
} finally {
host.pendingHooks = undefined;
}
});
it('reads idle for a live session', () => {
const row = host._sidebarRichRow('s1', { status: 'idle', lastActivityAt: 5 });
expect(row.exited).toBe(false);
expect(row.pill).toBe('idle');
expect(row.since).toEqual({ key: 'idle', at: 5 });
});
it('styles the exited pill on both rich surfaces', () => {
const css = readFileSync(resolve(import.meta.dirname, '../src/web/public/styles.css'), 'utf8');
expect(css).toContain('html[data-sidebar-detail="rich"] .session-sidebar .tab-pill--exited');
expect(css).toContain('.tab-rail .tab-pill--exited');
});
});
describe('what colour the status dot ends up', () => {
/*
* The dot renders from `status`, which stays `idle` or `busy` for an exited
* pane, so the mute is a CSS rule keyed on the `tab-agent-exited` class. It
* competes with two other families of rule over the same dot, and this tree
* has lost that competition before: the alert rules and the rich-rail state
* rules already exclude each other by hand rather than by cascade.
*
* So the cascade is resolved rather than asserted from selector text. Every
* rule in styles.css that paints `.tab-status` goes into a real document and
* a real engine answers, which is what makes a rule moved up the file or a
* selector given one more class fail here.
*
* ⚠ In styles.css the rules inside an at-rule are skipped, so the desktop
* cases describe a wide viewport with motion allowed. mobile.css is loaded
* separately for the phone cases, and there its @media blocks are FLATTENED
* rather than skipped, because that file is phone-and-tablet-only and its
* whole content sits inside them. jsdom reports a custom property
* unresolved, so the expected values are the `var(--x)` tokens the
* stylesheets write.
*/
const readRules = (file: string, flattenMedia: boolean): string[] => {
const out: string[] = [];
postcss.parse(readFileSync(resolve(import.meta.dirname, `../src/web/public/${file}`), 'utf8')).walkRules((rule) => {
if (!rule.selector.includes('.tab-status')) return;
const parents: string[] = [];
let insideAtRule = false;
for (let p = rule.parent; p && p.type !== 'root'; p = p.parent) {
if (p.type === 'rule') parents.unshift(p.selector);
else insideAtRule = true;
}
if (insideAtRule && !flattenMedia) return;
const decls: string[] = [];
rule.each((node) => {
if (node.type === 'decl') decls.push(`${node.prop}: ${node.value}${node.important ? ' !important' : ''};`);
});
if (decls.length === 0) return;
const selectors = rule.selectors.map((sel) => (parents.length ? `${parents.join(' ')} ${sel}` : sel));
out.push(`${selectors.join(',')} { ${decls.join(' ')} }`);
});
return out;
};
const dotRules = readRules('styles.css', false);
// index.html loads mobile.css after styles.css, so it goes last here too.
const phoneRules = [...dotRules, ...readRules('mobile.css', true)];
/** Paint the dot of one tab and read back what the cascade decided. */
const dot = (opts: { tab: string; dotState?: string; rail?: boolean; phone?: boolean }) => {
const railAttrs = opts.rail ? ` data-tab-orientation="vertical" data-tab-rail-detail="rich"` : '';
const container = opts.rail ? 'tab-rail' : 'session-tabs';
const rules = opts.phone ? phoneRules : dotRules;
const dom = new JSDOM(
`<!DOCTYPE html><html${railAttrs}><head><style>${rules.join('\n')}</style></head><body>` +
`<div class="${container}"><div class="session-tab ${opts.tab}">` +
`<span id="dot" class="tab-status ${opts.dotState ?? 'idle'}"></span></div></div></body></html>`
);
const style = dom.window.getComputedStyle(dom.window.document.getElementById('dot')!);
return {
background: style.background,
opacity: style.opacity,
boxShadow: style.boxShadow,
animation: style.animation,
};
};
it('finds the rules it is meant to be resolving', () => {
// A selector rename that emptied this list would make every case below pass
// against a stylesheet with no rules in it.
expect(dotRules.some((rule) => rule.includes('tab-agent-exited'))).toBe(true);
expect(dotRules.some((rule) => rule.includes('tab-alert-action'))).toBe(true);
});
it('mutes the dot of an exited session', () => {
expect(dot({ tab: 'tab-agent-exited' })).toMatchObject({ background: 'var(--text-muted)', opacity: '0.5' });
});
it('leaves a live session green', () => {
expect(dot({ tab: '' }).background).toBe('var(--green)');
});
it('keeps a pending permission dialog RED on an exited session', () => {
// The one the maintainer asked for: the exit must not quiet an alert. A
// board that says two things at once is a board people stop trusting, and
// between "the agent is gone" and "this session is blocked on you", the
// one that needs a human wins.
expect(dot({ tab: 'tab-agent-exited tab-alert-action' }).background).toBe('var(--red)');
});
it('keeps a pending idle alert YELLOW on an exited session', () => {
expect(dot({ tab: 'tab-agent-exited tab-alert-idle' }).background).toBe('var(--yellow)');
});
it('mutes a dot the exit caught mid-turn, and stops it pulsing', () => {
// `.tab-status.busy` animates `pulse`, so muting the colour alone would
// leave a grey dot breathing as if the agent were still working.
expect(dot({ tab: 'tab-agent-exited', dotState: 'busy' })).toMatchObject({
background: 'var(--text-muted)',
opacity: '0.5',
animation: 'none',
});
});
it('mutes the dot on a rich tab rail too, halo included', () => {
// The rail's own state rules are far more specific than the strip's mute
// (measured: an exited session kept a full green dot AND the working halo),
// so the mute carries a rail twin that must stay below them in source order.
expect(dot({ tab: 'tab-agent-exited tab-state-working', dotState: 'busy', rail: true })).toMatchObject({
background: 'var(--text-muted)',
opacity: '0.5',
boxShadow: 'none',
});
expect(dot({ tab: 'tab-agent-exited tab-state-idle', rail: true }).background).toBe('var(--text-muted)');
});
it('leaves an errored dot red, which is the state that offers a restart', () => {
// `status: 'error'` is the PTY-exit breaker's value and the browser answers
// it with a "restart it?" confirm, so it is a needs-you colour by the same
// argument that protects the two alert classes. Reachable when a restart of
// a dead pane keeps failing: the breaker trips while the pane stays dead.
expect(dot({ tab: 'tab-agent-exited', dotState: 'error' }).background).toBe('var(--red)');
});
it('mutes the dot on a phone, glow and all', () => {
// mobile.css enlarges the working dot to 9px and gives it a green glow with
// !important, and `status` stays `busy` for a pane whose agent died
// mid-turn — so without a phone-side rule this renders a grey dot wearing a
// green halo beside a badge reading "exited".
expect(dot({ tab: 'tab-agent-exited', dotState: 'busy', phone: true })).toMatchObject({
background: 'var(--text-muted)',
boxShadow: 'none',
});
});
it('keeps an alert red on a phone as well', () => {
expect(dot({ tab: 'tab-agent-exited tab-alert-action', dotState: 'busy', phone: true }).background).toBe(
'var(--red)'
);
});
it('finds the phone rules it is meant to be resolving', () => {
// Same self-guard as the desktop one: if mobile.css stopped contributing
// rules, every phone case above would pass against the desktop cascade.
expect(phoneRules.length).toBeGreaterThan(dotRules.length);
});
it('still keeps an alert red on the rich tab rail', () => {
expect(
dot({ tab: 'tab-agent-exited tab-alert-action tab-state-working', dotState: 'busy', rail: true }).background
).toBe('var(--red)');
});
});