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import Hooks from '../hooks'
import Fixtures from './fixtures'
tier('prepend')
describe('register', () => {
test(
'under an MCP allowlist a plugin the person installed may not add a tool',
{
plugins: [
Fixtures.registering('suite', 'prepend'),
Fixtures.registering('mine'),
Fixtures.registering('bundled', 'builtin'),
],
},
async ($, on) => {
on('settings.read', () => ({ value: Fixtures.ALLOWLIST }))
const registered = Fixtures.toolsRegistered(on)
await $.session.start(Fixtures.SESSION)
expect(registered).toEqual(['suite', 'bundled'])
},
)
test(
'with no allowlist, a plugin the person installed adds its tool',
{ plugins: [Fixtures.registering('mine')] },
async ($, on) => {
on('settings.read', () => ({ value: Fixtures.NO_ALLOWLIST }))
const registered = Fixtures.toolsRegistered(on)
await $.session.start(Fixtures.SESSION)
expect(registered).toEqual(['mine'])
},
)
test(
"an organization's registration passes over a refusing user plugin",
{
plugins: [
Fixtures.registering('suite', 'prepend'),
Fixtures.denying,
Fixtures.registering('bundled', 'builtin'),
],
},
async ($, on) => {
on('settings.read', () => ({ value: Fixtures.MANAGED_POLICY }))
const registered = Fixtures.toolsRegistered(on)
await $.session.start(Fixtures.SESSION)
expect(
registered,
"a built-in's registration still meets the user's deny",
).toEqual(['suite'])
},
)
test(
'a policy that cannot be read counts as one in force',
{ plugins: [Fixtures.registering('mine')] },
async ($, on) => {
on('settings.read', () => ({ deny: 'managed settings unreadable' }))
const registered = Fixtures.toolsRegistered(on)
await $.session.start(Fixtures.SESSION)
expect(registered).toEqual([])
},
)
test(
'the organization tools are listed as its tiers listed them',
{ plugins: [Fixtures.relabeling, Fixtures.listing] },
async ($, on) => {
on('settings.read', () => ({ value: Fixtures.ALLOWLIST }))
on('tool.list', () => ({ value: [...Fixtures.TOOLS] }))
const { text } = await $.command.run(Fixtures.TOOLS_COMMAND)
expect(text?.split('\n')).toEqual([
'mcp__corp__search: Searches the corp wiki.',
'Bash: relabeled',
])
},
)
test(
'a server policy delivers itself counts as a tool policy, unlisted',
{ plugins: [Fixtures.relabeling, Fixtures.listing] },
async ($, on) => {
on('settings.read', () => ({ value: Fixtures.SERVER_POLICY }))
on('tool.list', () => ({ value: [...Fixtures.TOOLS] }))
const { text } = await $.command.run(Fixtures.TOOLS_COMMAND)
expect(text?.split('\n')).toEqual([
'mcp__corp__search: Searches the corp wiki.',
'Bash: relabeled',
])
},
)
test(
"with no policy to read the organization's listing stands whole",
{ plugins: [Fixtures.relabeling, Fixtures.listing] },
async ($, on) => {
on('settings.read', () => ({ deny: 'settings unreadable' }))
on('tool.list', () => ({ value: [...Fixtures.TOOLS] }))
const { text } = await $.command.run(Fixtures.TOOLS_COMMAND)
expect(text?.split('\n')).toEqual([
'mcp__corp__search: Searches the corp wiki.',
'Bash: Runs a command.',
])
},
)
test(
'a prompt section passes over the plugins the person installed',
{ plugins: [Fixtures.dropping, Fixtures.signing] },
async ($, on) => {
on('prompt.section', ($, e) => ({ text: e.text }))
expect(await $.prompt.section(Fixtures.MEMORY)).toEqual({
text: 'the org says hi (signed)',
})
},
)
test(
"a user plugin's rewrite of policy is skipped for every other reader",
{
plugins: [
Fixtures.stripping,
Fixtures.reading,
Fixtures.registering('mine'),
],
},
async ($, on) => {
on('settings.read', () => ({ value: Fixtures.MANAGED_POLICY }))
const registered = Fixtures.toolsRegistered(on)
const { text } = await $.command.run(Fixtures.POLICY_COMMAND)
await $.session.start(Fixtures.SESSION)
expect(
JSON.parse(text ?? 'null'),
"another user plugin's read sees the allowlist the stripper hides",
).toEqual(Fixtures.MANAGED_POLICY)
expect(
registered,
"sec-default's own tool.register hook still reads the allowlist",
).toEqual([])
},
)
test(
"an organization provider's subject passes over the user plugins",
{ plugins: [Fixtures.marking] },
async ($, on) => {
Fixtures.subjectsEchoed(on)
for (const provider of Fixtures.ORG_PROVIDERS) {
expect(
await $.tool.describe(
Fixtures.toolDescribed('mcp__corp__search', provider),
),
).toEqual({ description: 'd' })
expect(
(
await $.command.describe(
Fixtures.commandDescribed('suite:deploy', provider),
)
).isHidden,
).toBe(false)
expect(
await $.agent.offer(
Fixtures.agentOffered('suite:reviewer', provider),
),
).toEqual({ isOffered: true })
expect(await $.agent.spawn(Fixtures.agentSpawned(provider))).toEqual({
model: 'core',
})
}
for (const provider of Fixtures.USER_REACHABLE_PROVIDERS) {
expect(
await $.tool.describe(
Fixtures.toolDescribed('mcp__mine__search', provider),
),
).toEqual({ description: 'user: d' })
expect(
(
await $.command.describe(
Fixtures.commandDescribed('mine:deploy', provider),
)
).isHidden,
).toBe(true)
expect(
await $.agent.offer(Fixtures.agentOffered('reviewer', provider)),
).toEqual({ isOffered: false })
expect(await $.agent.spawn(Fixtures.agentSpawned(provider))).toEqual({
model: 'user',
})
}
},
)
test(
'an odd provider passes over the user plugins: it fails closed',
{ plugins: [Fixtures.marking] },
async ($, on) => {
Fixtures.subjectsEchoed(on)
for (const provider of Fixtures.ODD_PROVIDERS) {
expect(
await $.tool.describe(Fixtures.toolDescribed('Bash', provider)),
).toEqual({ description: 'd' })
expect(await $.agent.spawn(Fixtures.agentSpawned(provider))).toEqual({
model: 'core',
})
}
},
)
test(
'a subject decision reads no policy; a burst of listings reads once',
{ plugins: [Fixtures.listing] },
async ($, on) => {
const reads = Fixtures.policyReads(on, Fixtures.MANAGED_POLICY)
Fixtures.subjectsEchoed(on)
on('tool.list', () => ({ value: [...Fixtures.TOOLS] }))
for (const provider of Fixtures.ORG_PROVIDERS) {
await $.tool.describe(Fixtures.toolDescribed('mcp__corp__x', provider))
await $.agent.spawn(Fixtures.agentSpawned(provider))
}
expect(reads()).toBe(0)
await Promise.all([
$.command.run(Fixtures.TOOLS_COMMAND),
$.command.run(Fixtures.TOOLS_COMMAND),
$.command.run(Fixtures.TOOLS_COMMAND),
])
expect(reads()).toBe(1)
},
)
test(
'the refusal a user-tier caller reads names the allowlist',
{
plugins: [
{
name: 'asking',
register(on) {
on('command.run', { command: 'greet' }, $ =>
$.tool
.register({
name: 'greet',
description: 'Says hello.',
inputSchema: { type: 'object' },
})
.then(
() => ({ text: 'registered' }),
(error: unknown) => ({ text: String(error) }),
),
)
},
},
],
},
async ($, on) => {
on('settings.read', () => ({ value: Fixtures.ALLOWLIST }))
const { text } = await $.command.run({
command: 'greet',
args: '',
origin: { kind: 'composer' },
presentation: Fixtures.FULLSCREEN,
})
expect(text).toEndWith(
`asking: $.tool.register: ${Hooks.TOOL_REGISTER_REFUSAL}`,
)
},
)
})
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