987 lines
28 KiB
TypeScript

import { describe, test, expect, mock, beforeEach } from 'bun:test'
import type { TmuxConfig } from '../../config/schema'
import type { WindowState, PaneAction } from './types'
import type { ActionResult, ExecuteContext } from './action-executor'
import type { TmuxUtilDeps } from './manager'
type ExecuteActionsResult = {
success: boolean
spawnedPaneId?: string
results: Array<{ action: PaneAction; result: ActionResult }>
}
const mockQueryWindowState = mock<(paneId: string) => Promise<WindowState | null>>(
async () => ({
windowWidth: 212,
windowHeight: 44,
mainPane: { paneId: '%0', width: 106, height: 44, left: 0, top: 0, title: 'main', isActive: true },
agentPanes: [],
})
)
const mockPaneExists = mock<(paneId: string) => Promise<boolean>>(async () => true)
const mockExecuteActions = mock<(
actions: PaneAction[],
ctx: ExecuteContext
) => Promise<ExecuteActionsResult>>(async () => ({
success: true,
spawnedPaneId: '%mock',
results: [],
}))
const mockExecuteAction = mock<(
action: PaneAction,
ctx: ExecuteContext
) => Promise<ActionResult>>(async () => ({ success: true }))
const mockIsInsideTmux = mock<() => boolean>(() => true)
const mockGetCurrentPaneId = mock<() => string | undefined>(() => '%0')
const mockTmuxDeps: TmuxUtilDeps = {
isInsideTmux: mockIsInsideTmux,
getCurrentPaneId: mockGetCurrentPaneId,
}
mock.module('./pane-state-querier', () => ({
queryWindowState: mockQueryWindowState,
paneExists: mockPaneExists,
getRightmostAgentPane: (state: WindowState) =>
state.agentPanes.length > 0
? state.agentPanes.reduce((r, p) => (p.left > r.left ? p : r))
: null,
getOldestAgentPane: (state: WindowState) =>
state.agentPanes.length > 0
? state.agentPanes.reduce((o, p) => (p.left < o.left ? p : o))
: null,
}))
mock.module('./action-executor', () => ({
executeActions: mockExecuteActions,
executeAction: mockExecuteAction,
executeActionWithDeps: mockExecuteAction,
}))
mock.module('../../shared/tmux', () => {
const { isInsideTmux, getCurrentPaneId } = require('../../shared/tmux/tmux-utils')
const { POLL_INTERVAL_BACKGROUND_MS, SESSION_TIMEOUT_MS, SESSION_MISSING_GRACE_MS } = require('../../shared/tmux/constants')
return {
isInsideTmux,
getCurrentPaneId,
POLL_INTERVAL_BACKGROUND_MS,
SESSION_TIMEOUT_MS,
SESSION_MISSING_GRACE_MS,
SESSION_READY_POLL_INTERVAL_MS: 100,
SESSION_READY_TIMEOUT_MS: 500,
}
})
const trackedSessions = new Set<string>()
function createMockContext(overrides?: {
sessionStatusResult?: { data?: Record<string, { type: string }> }
sessionMessagesResult?: { data?: unknown[] }
}) {
return {
serverUrl: new URL('http://localhost:4096'),
client: {
session: {
status: mock(async () => {
if (overrides?.sessionStatusResult) {
return overrides.sessionStatusResult
}
const data: Record<string, { type: string }> = {}
for (const sessionId of trackedSessions) {
data[sessionId] = { type: 'running' }
}
return { data }
}),
messages: mock(async () => {
if (overrides?.sessionMessagesResult) {
return overrides.sessionMessagesResult
}
return { data: [] }
}),
},
},
} as any
}
function createSessionCreatedEvent(
id: string,
parentID: string | undefined,
title: string
) {
return {
type: 'session.created',
properties: {
info: { id, parentID, title },
},
}
}
function createWindowState(overrides?: Partial<WindowState>): WindowState {
return {
windowWidth: 220,
windowHeight: 44,
mainPane: { paneId: '%0', width: 110, height: 44, left: 0, top: 0, title: 'main', isActive: true },
agentPanes: [],
...overrides,
}
}
describe('TmuxSessionManager', () => {
beforeEach(() => {
mockQueryWindowState.mockClear()
mockPaneExists.mockClear()
mockExecuteActions.mockClear()
mockExecuteAction.mockClear()
mockIsInsideTmux.mockClear()
mockGetCurrentPaneId.mockClear()
trackedSessions.clear()
mockQueryWindowState.mockImplementation(async () => createWindowState())
mockExecuteActions.mockImplementation(async (actions) => {
for (const action of actions) {
if (action.type === 'spawn') {
trackedSessions.add(action.sessionId)
}
}
return {
success: true,
spawnedPaneId: '%mock',
results: [],
}
})
})
describe('constructor', () => {
test('enabled when config.enabled=true and isInsideTmux=true', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext({
sessionStatusResult: {
data: {
ses_1: { type: 'running' },
ses_2: { type: 'running' },
ses_3: { type: 'running' },
},
},
})
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
// when
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
// then
expect(manager).toBeDefined()
})
test('disabled when config.enabled=true but isInsideTmux=false', async () => {
// given
mockIsInsideTmux.mockReturnValue(false)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext({
sessionStatusResult: {
data: {
ses_once: { type: 'running' },
},
},
})
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
// when
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
// then
expect(manager).toBeDefined()
})
test('disabled when config.enabled=false', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: false,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
// when
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
// then
expect(manager).toBeDefined()
})
})
describe('onSessionCreated', () => {
test('first agent spawns from source pane via decision engine', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
mockQueryWindowState.mockImplementation(async () => createWindowState())
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
const event = createSessionCreatedEvent(
'ses_child',
'ses_parent',
'Background: Test Task'
)
// when
await manager.onSessionCreated(event)
// then
expect(mockQueryWindowState).toHaveBeenCalledTimes(1)
expect(mockExecuteActions).toHaveBeenCalledTimes(1)
const call = mockExecuteActions.mock.calls[0]
expect(call).toBeDefined()
const actionsArg = call![0]
expect(actionsArg).toHaveLength(1)
expect(actionsArg[0].type).toBe('spawn')
if (actionsArg[0].type === 'spawn') {
expect(actionsArg[0].sessionId).toBe('ses_child')
expect(actionsArg[0].description).toBe('Background: Test Task')
expect(actionsArg[0].targetPaneId).toBe('%0')
expect(actionsArg[0].splitDirection).toBe('-h')
}
})
test('second agent spawns with correct split direction', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
let callCount = 0
mockQueryWindowState.mockImplementation(async () => {
callCount++
if (callCount === 1) {
return createWindowState()
}
return createWindowState({
agentPanes: [
{
paneId: '%1',
width: 40,
height: 44,
left: 100,
top: 0,
title: 'omo-subagent-Task 1',
isActive: false,
},
],
})
})
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
// when - first agent
await manager.onSessionCreated(
createSessionCreatedEvent('ses_1', 'ses_parent', 'Task 1')
)
mockExecuteActions.mockClear()
// when - second agent
await manager.onSessionCreated(
createSessionCreatedEvent('ses_2', 'ses_parent', 'Task 2')
)
// then
expect(mockExecuteActions).toHaveBeenCalledTimes(1)
const call = mockExecuteActions.mock.calls[0]
expect(call).toBeDefined()
const actionsArg = call![0]
expect(actionsArg).toHaveLength(1)
expect(actionsArg[0].type).toBe('spawn')
})
test('does NOT spawn pane when session has no parentID', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
const event = createSessionCreatedEvent('ses_root', undefined, 'Root Session')
// when
await manager.onSessionCreated(event)
// then
expect(mockExecuteActions).toHaveBeenCalledTimes(0)
})
test('does NOT spawn pane when disabled', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: false,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
const event = createSessionCreatedEvent(
'ses_child',
'ses_parent',
'Background: Test Task'
)
// when
await manager.onSessionCreated(event)
// then
expect(mockExecuteActions).toHaveBeenCalledTimes(0)
})
test('does NOT spawn pane for non session.created event type', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
const event = {
type: 'session.deleted',
properties: {
info: { id: 'ses_child', parentID: 'ses_parent', title: 'Task' },
},
}
// when
await manager.onSessionCreated(event)
// then
expect(mockExecuteActions).toHaveBeenCalledTimes(0)
})
test('defers attach when unsplittable (small window)', async () => {
// given - small window where split is not possible
mockIsInsideTmux.mockReturnValue(true)
mockQueryWindowState.mockImplementation(async () =>
createWindowState({
windowWidth: 160,
windowHeight: 11,
agentPanes: [
{
paneId: '%1',
width: 40,
height: 11,
left: 80,
top: 0,
title: 'omo-subagent-Task 1',
isActive: false,
},
],
})
)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 120,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
// when
await manager.onSessionCreated(
createSessionCreatedEvent('ses_new', 'ses_parent', 'New Task')
)
// then - with small window, manager defers instead of replacing
expect(mockExecuteActions).toHaveBeenCalledTimes(0)
expect((manager as any).deferredQueue).toEqual(['ses_new'])
})
test('keeps deferred queue idempotent for duplicate session.created events', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
mockQueryWindowState.mockImplementation(async () =>
createWindowState({
windowWidth: 160,
windowHeight: 11,
agentPanes: [
{
paneId: '%1',
width: 80,
height: 11,
left: 80,
top: 0,
title: 'old',
isActive: false,
},
],
})
)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 120,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
// when
await manager.onSessionCreated(
createSessionCreatedEvent('ses_dup', 'ses_parent', 'Duplicate Task')
)
await manager.onSessionCreated(
createSessionCreatedEvent('ses_dup', 'ses_parent', 'Duplicate Task')
)
// then
expect((manager as any).deferredQueue).toEqual(['ses_dup'])
})
test('auto-attaches deferred sessions in FIFO order', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
mockQueryWindowState.mockImplementation(async () =>
createWindowState({
windowWidth: 160,
windowHeight: 11,
agentPanes: [
{
paneId: '%1',
width: 80,
height: 11,
left: 80,
top: 0,
title: 'old',
isActive: false,
},
],
})
)
const attachOrder: string[] = []
mockExecuteActions.mockImplementation(async (actions) => {
for (const action of actions) {
if (action.type === 'spawn') {
attachOrder.push(action.sessionId)
trackedSessions.add(action.sessionId)
return {
success: true,
spawnedPaneId: `%${action.sessionId}`,
results: [{ action, result: { success: true, paneId: `%${action.sessionId}` } }],
}
}
}
return { success: true, results: [] }
})
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 120,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
await manager.onSessionCreated(createSessionCreatedEvent('ses_1', 'ses_parent', 'Task 1'))
await manager.onSessionCreated(createSessionCreatedEvent('ses_2', 'ses_parent', 'Task 2'))
await manager.onSessionCreated(createSessionCreatedEvent('ses_3', 'ses_parent', 'Task 3'))
expect((manager as any).deferredQueue).toEqual(['ses_1', 'ses_2', 'ses_3'])
// when
mockQueryWindowState.mockImplementation(async () => createWindowState())
await (manager as any).tryAttachDeferredSession()
await (manager as any).tryAttachDeferredSession()
await (manager as any).tryAttachDeferredSession()
// then
expect(attachOrder).toEqual(['ses_1', 'ses_2', 'ses_3'])
expect((manager as any).deferredQueue).toEqual([])
})
test('does not attach deferred session more than once across repeated retries', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
mockQueryWindowState.mockImplementation(async () =>
createWindowState({
windowWidth: 160,
windowHeight: 11,
agentPanes: [
{
paneId: '%1',
width: 80,
height: 11,
left: 80,
top: 0,
title: 'old',
isActive: false,
},
],
})
)
let attachCount = 0
mockExecuteActions.mockImplementation(async (actions) => {
for (const action of actions) {
if (action.type === 'spawn') {
attachCount += 1
trackedSessions.add(action.sessionId)
return {
success: true,
spawnedPaneId: `%${action.sessionId}`,
results: [{ action, result: { success: true, paneId: `%${action.sessionId}` } }],
}
}
}
return { success: true, results: [] }
})
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 120,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
await manager.onSessionCreated(
createSessionCreatedEvent('ses_once', 'ses_parent', 'Task Once')
)
// when
mockQueryWindowState.mockImplementation(async () => createWindowState())
await (manager as any).tryAttachDeferredSession()
await (manager as any).tryAttachDeferredSession()
// then
expect(attachCount).toBe(1)
expect((manager as any).deferredQueue).toEqual([])
})
test('removes deferred session when session is deleted before attach', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
mockQueryWindowState.mockImplementation(async () =>
createWindowState({
windowWidth: 160,
windowHeight: 11,
agentPanes: [
{
paneId: '%1',
width: 80,
height: 11,
left: 80,
top: 0,
title: 'old',
isActive: false,
},
],
})
)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 120,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
await manager.onSessionCreated(
createSessionCreatedEvent('ses_pending', 'ses_parent', 'Pending Task')
)
expect((manager as any).deferredQueue).toEqual(['ses_pending'])
// when
await manager.onSessionDeleted({ sessionID: 'ses_pending' })
// then
expect((manager as any).deferredQueue).toEqual([])
expect(mockExecuteAction).toHaveBeenCalledTimes(0)
})
})
describe('onSessionDeleted', () => {
test('does not track session when readiness timed out', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
let stateCallCount = 0
mockQueryWindowState.mockImplementation(async () => {
stateCallCount++
if (stateCallCount === 1) {
return createWindowState()
}
return createWindowState({
agentPanes: [
{
paneId: '%mock',
width: 40,
height: 44,
left: 100,
top: 0,
title: 'omo-subagent-Timeout Task',
isActive: false,
},
],
})
})
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext({ sessionStatusResult: { data: {} } })
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
await manager.onSessionCreated(
createSessionCreatedEvent('ses_timeout', 'ses_parent', 'Timeout Task')
)
mockExecuteAction.mockClear()
// when
await manager.onSessionDeleted({ sessionID: 'ses_timeout' })
// then
expect(mockExecuteAction).toHaveBeenCalledTimes(1)
})
test('closes pane when tracked session is deleted', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
let stateCallCount = 0
mockQueryWindowState.mockImplementation(async () => {
stateCallCount++
if (stateCallCount === 1) {
return createWindowState()
}
return createWindowState({
agentPanes: [
{
paneId: '%mock',
width: 40,
height: 44,
left: 100,
top: 0,
title: 'omo-subagent-Task',
isActive: false,
},
],
})
})
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
await manager.onSessionCreated(
createSessionCreatedEvent(
'ses_child',
'ses_parent',
'Background: Test Task'
)
)
mockExecuteAction.mockClear()
// when
await manager.onSessionDeleted({ sessionID: 'ses_child' })
// then
expect(mockExecuteAction).toHaveBeenCalledTimes(1)
const call = mockExecuteAction.mock.calls[0]
expect(call).toBeDefined()
expect(call![0]).toEqual({
type: 'close',
paneId: '%mock',
sessionId: 'ses_child',
})
})
test('does nothing when untracked session is deleted', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
// when
await manager.onSessionDeleted({ sessionID: 'ses_unknown' })
// then
expect(mockExecuteAction).toHaveBeenCalledTimes(0)
})
})
describe('cleanup', () => {
test('closes all tracked panes', async () => {
// given
mockIsInsideTmux.mockReturnValue(true)
let callCount = 0
mockExecuteActions.mockImplementation(async (actions) => {
callCount++
for (const action of actions) {
if (action.type === 'spawn') {
trackedSessions.add(action.sessionId)
}
}
return {
success: true,
spawnedPaneId: `%${callCount}`,
results: [],
}
})
const { TmuxSessionManager } = await import('./manager')
const ctx = createMockContext()
const config: TmuxConfig = {
enabled: true,
layout: 'main-vertical',
main_pane_size: 60,
main_pane_min_width: 80,
agent_pane_min_width: 40,
}
const manager = new TmuxSessionManager(ctx, config, mockTmuxDeps)
await manager.onSessionCreated(
createSessionCreatedEvent('ses_1', 'ses_parent', 'Task 1')
)
await manager.onSessionCreated(
createSessionCreatedEvent('ses_2', 'ses_parent', 'Task 2')
)
mockExecuteAction.mockClear()
// when
await manager.cleanup()
// then
expect(mockExecuteAction).toHaveBeenCalledTimes(2)
})
})
})
describe('DecisionEngine', () => {
describe('calculateCapacity', () => {
test('calculates correct 2D grid capacity', async () => {
// given
const { calculateCapacity } = await import('./decision-engine')
// when
const result = calculateCapacity(212, 44)
// then - availableWidth=106, cols=(106+1)/(52+1)=2, rows=(44+1)/(11+1)=3 (accounting for dividers)
expect(result.cols).toBe(2)
expect(result.rows).toBe(3)
expect(result.total).toBe(6)
})
test('returns 0 cols when agent area too narrow', async () => {
// given
const { calculateCapacity } = await import('./decision-engine')
// when
const result = calculateCapacity(100, 44)
// then - availableWidth=50, cols=50/53=0
expect(result.cols).toBe(0)
expect(result.total).toBe(0)
})
})
describe('decideSpawnActions', () => {
test('returns spawn action with splitDirection when under capacity', async () => {
// given
const { decideSpawnActions } = await import('./decision-engine')
const state: WindowState = {
windowWidth: 212,
windowHeight: 44,
mainPane: {
paneId: '%0',
width: 106,
height: 44,
left: 0,
top: 0,
title: 'main',
isActive: true,
},
agentPanes: [],
}
// when
const decision = decideSpawnActions(
state,
'ses_1',
'Test Task',
{ mainPaneMinWidth: 120, agentPaneWidth: 40 },
[]
)
// then
expect(decision.canSpawn).toBe(true)
expect(decision.actions).toHaveLength(1)
expect(decision.actions[0].type).toBe('spawn')
if (decision.actions[0].type === 'spawn') {
expect(decision.actions[0].sessionId).toBe('ses_1')
expect(decision.actions[0].description).toBe('Test Task')
expect(decision.actions[0].targetPaneId).toBe('%0')
expect(decision.actions[0].splitDirection).toBe('-h')
}
})
test('returns canSpawn=false when split not possible', async () => {
// given - small window where split is never possible
const { decideSpawnActions } = await import('./decision-engine')
const state: WindowState = {
windowWidth: 160,
windowHeight: 11,
mainPane: {
paneId: '%0',
width: 80,
height: 11,
left: 0,
top: 0,
title: 'main',
isActive: true,
},
agentPanes: [
{
paneId: '%1',
width: 80,
height: 11,
left: 80,
top: 0,
title: 'omo-subagent-Old',
isActive: false,
},
],
}
const sessionMappings = [
{ sessionId: 'ses_old', paneId: '%1', createdAt: new Date('2024-01-01') },
]
// when
const decision = decideSpawnActions(
state,
'ses_new',
'New Task',
{ mainPaneMinWidth: 120, agentPaneWidth: 40 },
sessionMappings
)
// then - agent area (80) < MIN_SPLIT_WIDTH (105), so attach is deferred
expect(decision.canSpawn).toBe(false)
expect(decision.actions).toHaveLength(0)
expect(decision.reason).toContain('defer')
})
test('returns canSpawn=false when window too small', async () => {
// given
const { decideSpawnActions } = await import('./decision-engine')
const state: WindowState = {
windowWidth: 60,
windowHeight: 5,
mainPane: {
paneId: '%0',
width: 30,
height: 5,
left: 0,
top: 0,
title: 'main',
isActive: true,
},
agentPanes: [],
}
// when
const decision = decideSpawnActions(
state,
'ses_1',
'Test Task',
{ mainPaneMinWidth: 120, agentPaneWidth: 40 },
[]
)
// then
expect(decision.canSpawn).toBe(false)
expect(decision.reason).toContain('too small')
})
})
})