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const t = require('tap')
const fs = require('fs')
const path = require('path')
const completionScript = fs
.readFileSync(path.resolve(__dirname, '../../../lib/utils/completion.sh'), { encoding: 'utf8' })
.replace(/^#!.*?\n/, '')
const { load: _loadMockNpm } = require('../../fixtures/mock-npm')
const mockGlobals = require('../../fixtures/mock-globals')
const loadMockCompletion = async (t, o = {}) => {
const { globals, windows, ...options } = o
let resetGlobals = {}
if (globals) {
resetGlobals = mockGlobals(t, globals).reset
}
const res = await _loadMockNpm(t, {
mocks: {
'../../lib/utils/is-windows-shell.js': !!windows,
...options.mocks,
},
...options,
})
const completion = await res.npm.cmd('completion')
return {
resetGlobals,
completion,
...res,
}
}
const loadMockCompletionComp = async (t, word, line) =>
loadMockCompletion(t, {
globals: {
'process.env.COMP_CWORD': word,
'process.env.COMP_LINE': line,
'process.env.COMP_POINT': line.length,
},
})
t.test('completion', async t => {
t.test('completion completion', async t => {
const { outputs, completion, prefix } = await loadMockCompletion(t, {
testdir: {
'.bashrc': 'aaa',
'.zshrc': 'aaa',
},
})
mockGlobals(t, { 'process.env.HOME': prefix })
await completion.completion({ w: 2 })
t.matchSnapshot(outputs, 'both shells')
})
t.test('completion completion no known shells', async t => {
const { outputs, completion, prefix } = await loadMockCompletion(t)
mockGlobals(t, { 'process.env.HOME': prefix })
await completion.completion({ w: 2 })
t.matchSnapshot(outputs, 'no responses')
})
t.test('completion completion wrong word count', async t => {
const { outputs, completion } = await loadMockCompletion(t)
await completion.completion({ w: 3 })
t.matchSnapshot(outputs, 'no responses')
})
t.test('dump script when completion is not being attempted', async t => {
let errorHandler, data
const { completion, resetGlobals } = await loadMockCompletion(t, {
globals: {
'process.stdout.on': (event, handler) => {
errorHandler = handler
resetGlobals['process.stdout.on']()
},
'process.stdout.write': (chunk, callback) => {
data = chunk
process.nextTick(() => {
callback()
errorHandler({ errno: 'EPIPE' })
})
resetGlobals['process.stdout.write']()
},
},
})
await completion.exec({})
t.equal(data, completionScript, 'wrote the completion script')
})
t.test('dump script exits correctly when EPIPE is emitted on stdout', async t => {
let errorHandler, data
const { completion, resetGlobals } = await loadMockCompletion(t, {
globals: {
'process.stdout.on': (event, handler) => {
if (event === 'error') {
errorHandler = handler
}
resetGlobals['process.stdout.on']()
},
'process.stdout.write': (chunk, callback) => {
data = chunk
process.nextTick(() => {
errorHandler({ errno: 'EPIPE' })
callback()
})
resetGlobals['process.stdout.write']()
},
},
})
await completion.exec({})
t.equal(data, completionScript, 'wrote the completion script')
})
t.test('single command name', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 1, 'npm conf')
await completion.exec(['npm', 'conf'])
t.matchSnapshot(outputs, 'single command name')
})
t.test('multiple command names', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 1, 'npm a')
await completion.exec(['npm', 'a'])
t.matchSnapshot(outputs, 'multiple command names')
})
t.test('completion of invalid command name does nothing', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 1, 'npm compute')
await completion.exec(['npm', 'compute'])
t.matchSnapshot(outputs, 'no results')
})
t.test('subcommand completion', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 2, 'npm access ')
await completion.exec(['npm', 'access', ''])
t.matchSnapshot(outputs, 'subcommands')
})
t.test('filtered subcommands', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 2, 'npm access p')
await completion.exec(['npm', 'access', 'p'])
t.matchSnapshot(outputs, 'filtered subcommands')
})
t.test('commands with no completion', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 2, 'npm adduser ')
// quotes around adduser are to ensure coverage when unescaping commands
await completion.exec(['npm', "'adduser'", ''])
t.matchSnapshot(outputs, 'no results')
})
t.test('flags', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 2, 'npm install --v')
await completion.exec(['npm', 'install', '--v'])
t.matchSnapshot(outputs, 'flags')
})
t.test('--no- flags', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 2, 'npm install --no-v')
await completion.exec(['npm', 'install', '--no-v'])
t.matchSnapshot(outputs, 'flags')
})
t.test('double dashes escape from flag completion', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 2, 'npm -- install --')
await completion.exec(['npm', '--', 'install', '--'])
t.matchSnapshot(outputs, 'full command list')
})
t.test('completion cannot complete options that take a value in mid-command', async t => {
const { outputs, completion } = await loadMockCompletionComp(t, 2, 'npm --registry install')
await completion.exec(['npm', '--registry', 'install'])
t.matchSnapshot(outputs, 'does not try to complete option arguments in the middle of a command')
})
})
t.test('windows without bash', async t => {
const { outputs, completion } = await loadMockCompletion(t, { windows: true })
await t.rejects(
completion.exec({}),
{ code: 'ENOTSUP', message: /completion supported only in MINGW/ },
'returns the correct error'
)
t.matchSnapshot(outputs, 'no output')
})
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