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youch.spec.js
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youch.spec.js
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'use strict'
const test = require('japa')
const http = require('http')
const path = require('path')
const supertest = require('supertest')
const Youch = require('../src/Youch')
const DEFAULT_PORT = 8000
test.group('Youch', () => {
test('initiate a new instance by passing error object', (assert) => {
const error = new Error('foo')
const youch = new Youch(error, {})
assert.equal(youch.error.message, 'foo')
assert.deepEqual(youch.request, {})
})
test('parse the error into frames', (assert, done) => {
const error = new Error('foo')
const youch = new Youch(error, {})
youch
._parseError()
.then((stack) => {
assert.equal(stack[0].file, __filename.replace(/\\/g, '/'))
assert.equal(stack[0].native, false)
done()
}).catch(done)
})
test('convert error to JSON', (assert, done) => {
const error = new Error('foo')
const youch = new Youch(error, {})
youch
.toJSON()
.then(({ error }) => {
assert.equal(error.frames[0].filePath, __filename.replace(/\\/g, '/'))
assert.equal(error.frames[0].isNative, false)
done()
}).catch(done)
})
test('parse stack frame context to tokens', (assert, done) => {
const error = new Error('this is bar')
const youch = new Youch(error, {})
youch
._parseError()
.then((stack) => {
const context = youch._getContext(stack[0])
assert.equal(context.line.trim(), 'const error = new Error(\'this is bar\')')
done()
})
.catch(done)
})
// Source map package, webpack bundling, dynamic loading,
// there are many reasons why the filepath in the stack does not exist.
test('does not error on non-existing files', (assert, done) => {
const error = new Error('this is bar')
error.stack = error.stack.replace(__dirname, 'invalid-path')
const youch = new Youch(error, {})
youch
._parseError()
.then((stack) => {
const frame = stack.find(f => f.file.includes('invalid-path'))
return youch._getFrameSource(frame)
})
.then((source) => {
assert.deepEqual(source, null)
done()
})
.catch(done)
})
test('parse common Webpack scenario', (assert, done) => {
const error = new Error('this is bar')
error.stack = error.stack
.replace(__dirname, path.join(__dirname, ['dist', 'webpack:'].join(path.sep)))
const youch = new Youch(error, {})
youch
._parseError()
.then((stack) => {
const frame = stack.find(file => {
return file.file && file.file.includes(['dist', 'webpack:'].join('/'))
})
return youch._getFrameSource(frame)
})
.then((source) => {
assert.isObject(source)
assert.isString(source.line)
assert.isAbove(source.line.length, 10)
done()
})
.catch(done)
})
test('return native frame class when frame is native', (assert) => {
const error = new Error('this is bar')
const youch = new Youch(error, {})
const frame = {
isApp: false,
getFileName: () => './hello.js'
}
const classes = youch._getDisplayClasses(frame, 0)
assert.deepEqual(classes, ['native-frame'])
})
test('find if frame is a node_module or not', (assert) => {
const error = new Error('this is bar')
const youch = new Youch(error, {})
const frame = {
file: './node_modules/hello.js'
}
assert.isTrue(youch._isNodeModule(frame))
})
test('serialize http request', (assert, done) => {
const server = http.createServer((req, res) => {
const youch = new Youch({}, req)
res.writeHead(200, { 'content-type': 'application/json' })
res.write(JSON.stringify(youch._serializeRequest()))
res.end()
}).listen(DEFAULT_PORT)
supertest(server).get('/').end((error, response) => {
if (error) {
done(error)
return
}
assert.isArray(response.body.cookies)
assert.deepEqual(response.body.cookies, [])
assert.equal(response.body.url, '/')
assert.isArray(response.body.headers)
server.close()
done()
})
})
test('serialize http request and return cookies from it', (assert, done) => {
const server = http.createServer((req, res) => {
const youch = new Youch({}, req)
res.writeHead(200, { 'content-type': 'application/json' })
res.write(JSON.stringify(youch._serializeRequest()))
res.end()
}).listen(DEFAULT_PORT)
supertest(server).get('/').set('Cookie', 'name=virk; Path=/').end((error, response) => {
if (error) {
done(error)
return
}
assert.isArray(response.body.cookies)
assert.deepEqual(response.body.cookies, [{ key: 'name', value: 'virk' }, { key: 'Path', value: '/' }])
assert.equal(response.body.url, '/')
assert.isArray(response.body.headers)
done()
})
})
test('preLines/postLines should be affect number of frame context lines', (assert, done) => {
const error = new Error('this is bar')
const youch = new Youch(error, {}, {
preLines: 2,
postLines: 4
})
youch
._parseError()
.then((stack) => {
const frame = stack[0]
const context = youch._getContext(frame)
assert.equal(context.pre.split('\n').length, 2)
assert.equal(context.post.split('\n').length, 4)
done()
})
.catch(done)
})
test('default preLines/postLines should be 5', (assert, done) => {
const error = new Error('this is bar')
const youch = new Youch(error, {})
youch
._parseError()
.then((stack) => {
const frame = stack[0]
const context = youch._getContext(frame)
assert.equal(context.pre.split('\n').length, 5)
assert.equal(context.post.split('\n').length, 5)
done()
})
.catch(done)
})
test('serialize error cause', (assert, done) => {
const cause = new Error('The main error')
const error = new Error('foo', { cause })
const youch = new Youch(error, {})
youch
.toJSON()
.then(({ error }) => {
assert.equal(error.frames[0].filePath, __filename.replace(/\\/g, '/'))
assert.equal(error.frames[0].isNative, false)
assert.strictEqual(error.cause, cause)
done()
}).catch(done)
})
test('serialize error help', (assert, done) => {
const error = new Error('foo')
error.help = ['This is the error help text']
const youch = new Youch(error, {})
youch
.toJSON()
.then(({ error }) => {
assert.equal(error.frames[0].filePath, __filename.replace(/\\/g, '/'))
assert.equal(error.frames[0].isNative, false)
assert.deepEqual(error.help, ['This is the error help text'])
done()
}).catch(done)
})
test('convert error to HTML', (assert, done) => {
const error = new Error('foo')
const youch = new Youch(error, {})
youch
.toHTML()
.then((html) => {
assert.isTrue(html.startsWith('<!DOCTYPE html>'))
assert.isFalse(html.includes('<script type="text/javascript" nonce="foo">'))
assert.isFalse(html.includes('<style type="text/css" nonce="foo">'))
done()
}).catch(done)
})
test('pass csp nonce to script and style tags', (assert, done) => {
const error = new Error('foo')
const youch = new Youch(error, {})
youch
.toHTML({ cspNonce: 'foo' })
.then((html) => {
assert.isTrue(html.includes('<script type="text/javascript" nonce="foo">'))
assert.isTrue(html.includes('<style type="text/css" nonce="foo">'))
done()
}).catch(done)
})
})