| 1 | 'use strict'
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| 2 |
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| 3 | const co = require('co')
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| 4 | const path = require('path')
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| 5 | const aglob = require('aglob')
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| 6 | const execcli = require('execcli')
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| 7 | const _mocha = require.resolve('mocha/bin/_mocha')
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| 8 |
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| 9 |
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| 10 | function coverage (pattern, options = {}) {
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| 11 | let {
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| 12 | dir = 'coverage',
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| 13 | timeout = 6000,
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| 14 | cwd = process.cwd()
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| 15 | } = options
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| 16 | return co(function * () {
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| 17 | let filenames = yield aglob(pattern, { cwd })
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| 18 | if (filenames.length === 0) {
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| 19 | throw new Error(`File not found with pattern: ${pattern}`)
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| 20 | }
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| 21 | let istanbul = require.resolve('istanbul/lib/cli.js')
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| 22 | return execcli(istanbul, [
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| 23 | 'cover', '--dir', dir, _mocha, '--', '-t', timeout, ...filenames
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| 24 | ], {
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| 25 | cwd,
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| 26 | notfound: 'try `npm install istanbul -g`'
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| 27 | })
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| 28 | })
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| 29 | }
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| 30 |
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| 31 | module.exports = coverage
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