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hono/runtime_tests/lambda/index.test.ts
TATSUNO “Taz” Yasuhiro ec3648d0c3
refactor(aws-lambda): merge custom-context into types (#2889)
* refactor(aws-lambda): merge custom-context into types so they are excluded from coverage

* refactor: custom-context.ts is not needed since it is hidden by reexport
2024-06-03 00:16:07 +09:00

970 lines
29 KiB
TypeScript

import { Readable } from 'stream'
import { handle, streamHandle } from '../../src/adapter/aws-lambda/handler'
import type { LambdaEvent } from '../../src/adapter/aws-lambda/handler'
import type {
ApiGatewayRequestContext,
ApiGatewayRequestContextV2,
LambdaContext,
} from '../../src/adapter/aws-lambda/types'
import { getCookie, setCookie } from '../../src/helper/cookie'
import { streamSSE } from '../../src/helper/streaming'
import { Hono } from '../../src/hono'
import { basicAuth } from '../../src/middleware/basic-auth'
import './mock'
type Bindings = {
event: LambdaEvent
lambdaContext: LambdaContext
requestContext: ApiGatewayRequestContext | ApiGatewayRequestContextV2
}
const testApiGatewayRequestContextV2 = {
accountId: '123456789012',
apiId: 'urlid',
authentication: null,
authorizer: {
iam: {
accessKey: 'AKIA...',
accountId: '111122223333',
callerId: 'AIDA...',
cognitoIdentity: null,
principalOrgId: null,
userArn: 'arn:aws:iam::111122223333:user/example-user',
userId: 'AIDA...',
},
},
domainName: 'example.com',
domainPrefix: '<url-id>',
http: {
method: 'POST',
path: '/my/path',
protocol: 'HTTP/1.1',
sourceIp: '123.123.123.123',
userAgent: 'agent',
},
requestId: 'id',
routeKey: '$default',
stage: '$default',
time: '12/Mar/2020:19:03:58 +0000',
timeEpoch: 1583348638390,
customProperty: 'customValue',
}
describe('AWS Lambda Adapter for Hono', () => {
const app = new Hono<{ Bindings: Bindings }>()
app.get('/', (c) => {
return c.text('Hello Lambda!')
})
app.get('/binary', (c) => {
return c.body('Fake Image', 200, {
'Content-Type': 'image/png',
})
})
app.post('/post', async (c) => {
const body = (await c.req.parseBody()) as { message: string }
return c.text(body.message)
})
app.post('/post/binary', async (c) => {
const body = await c.req.blob()
return c.text(`${body.size} bytes`)
})
const username = 'hono-user-a'
const password = 'hono-password-a'
app.use('/auth/*', basicAuth({ username, password }))
app.get('/auth/abc', (c) => c.text('Good Night Lambda!'))
app.get('/lambda-event', (c) => {
const event = c.env.event
return c.json(event)
})
app.get('/lambda-context', (c) => {
const fnctx = c.env.lambdaContext
return c.json(fnctx)
})
app.get('/custom-context/v1/apigw', (c) => {
const lambdaContext = c.env.requestContext
return c.json(lambdaContext)
})
app.get('/custom-context/apigw', (c) => {
const lambdaContext = c.env.event.requestContext
return c.json(lambdaContext)
})
app.get('/custom-context/v1/lambda', (c) => {
const lambdaContext = c.env.requestContext
return c.json(lambdaContext)
})
app.get('/custom-context/lambda', (c) => {
const lambdaContext = c.env.event.requestContext
return c.json(lambdaContext)
})
app.get('/query-params', (c) => {
const queryParams = c.req.query()
return c.json(queryParams)
})
app.get('/multi-query-params', (c) => {
const multiQueryParams = c.req.queries()
return c.json(multiQueryParams)
})
const testCookie1 = {
key: 'id',
value: crypto.randomUUID(),
get serialized() {
return `${this.key}=${this.value}; Path=/`
},
}
const testCookie2 = {
key: 'secret',
value: crypto.randomUUID(),
get serialized() {
return `${this.key}=${this.value}; Path=/`
},
}
app.post('/cookie', (c) => {
setCookie(c, testCookie1.key, testCookie1.value)
setCookie(c, testCookie2.key, testCookie2.value)
return c.text('Cookies Set')
})
app.get('/cookie', (c) => {
const validCookies =
getCookie(c, testCookie1.key) === testCookie1.value &&
getCookie(c, testCookie2.key) === testCookie2.value
if (!validCookies) {
return c.text('Invalid Cookies')
}
return c.text('Valid Cookies')
})
app.post('/headers', (c) => {
if (c.req.header('foo')?.includes('bar')) {
return c.json({ message: 'ok' })
}
return c.json({ message: 'fail' }, 400)
})
const handler = handle(app)
const testApiGatewayRequestContext = {
accountId: '123456789012',
apiId: 'id',
authorizer: {
claims: null,
scopes: null,
},
domainName: 'example.com',
domainPrefix: 'id',
extendedRequestId: 'request-id',
httpMethod: 'GET',
identity: {
sourceIp: 'IP',
userAgent: 'user-agent',
},
path: '/my/path',
protocol: 'HTTP/1.1',
requestId: 'id=',
requestTime: '04/Mar/2020:19:15:17 +0000',
requestTimeEpoch: 1583349317135,
resourcePath: '/',
stage: '$default',
customProperty: 'customValue',
}
const testApiGatewayRequestContextV2 = {
accountId: '123456789012',
apiId: 'urlid',
authentication: null,
authorizer: {
iam: {
accessKey: 'AKIA...',
accountId: '111122223333',
callerId: 'AIDA...',
cognitoIdentity: null,
principalOrgId: null,
userArn: 'arn:aws:iam::111122223333:user/example-user',
userId: 'AIDA...',
},
},
domainName: 'example.com',
domainPrefix: '<url-id>',
http: {
method: 'POST',
path: '/my/path',
protocol: 'HTTP/1.1',
sourceIp: '123.123.123.123',
userAgent: 'agent',
},
requestId: 'id',
routeKey: '$default',
stage: '$default',
time: '12/Mar/2020:19:03:58 +0000',
timeEpoch: 1583348638390,
customProperty: 'customValue',
}
const testALBRequestContext = {
elb: {
targetGroupArn:
'arn:aws:elasticloadbalancing:us-east-1:123456789012:targetgroup/lambda-279XGJDqGZ5rsrHC2Fjr/49e9d65c45c6791a',
},
}
it('Should handle a GET request and return a 200 response', async () => {
const event = {
version: '1.0',
resource: '/',
httpMethod: 'GET',
headers: { 'content-type': 'text/plain' },
path: '/',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('Hello Lambda!')
expect(response.headers['content-type']).toMatch(/^text\/plain/)
expect(response.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 200 response with binary', async () => {
const event = {
version: '1.0',
resource: '/binary',
httpMethod: 'GET',
headers: {},
path: '/binary',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('RmFrZSBJbWFnZQ==')
expect(response.headers['content-type']).toMatch(/^image\/png/)
expect(response.isBase64Encoded).toBe(true)
})
it('Should handle a GET request and return a 200 response (LambdaFunctionUrlEvent)', async () => {
const event = {
version: '2.0',
routeKey: '$default',
headers: { 'content-type': 'text/plain' },
rawPath: '/',
rawQueryString: '',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContextV2,
}
testApiGatewayRequestContextV2.http.method = 'GET'
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('Hello Lambda!')
expect(response.headers['content-type']).toMatch(/^text\/plain/)
expect(response.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 200 response (ALBEvent)', async () => {
const event = {
headers: { 'content-type': 'text/plain' },
httpMethod: 'GET',
path: '/',
queryStringParameters: {
query: '1234ABCD',
},
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('Hello Lambda!')
expect(response.headers['content-type']).toMatch(/^text\/plain/)
expect(response.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 404 response', async () => {
const event = {
version: '1.0',
resource: '/nothing',
httpMethod: 'GET',
headers: { 'content-type': 'text/plain' },
path: '/nothing',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(404)
})
it('Should handle a POST request and return a 200 response', async () => {
const searchParam = new URLSearchParams()
searchParam.append('message', 'Good Morning Lambda!')
const event = {
version: '1.0',
resource: '/post',
httpMethod: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
path: '/post',
body: Buffer.from(searchParam.toString()).toString('base64'),
isBase64Encoded: true,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('Good Morning Lambda!')
})
it('Should handle a POST request and return a 200 response (LambdaFunctionUrlEvent)', async () => {
const searchParam = new URLSearchParams()
searchParam.append('message', 'Good Morning Lambda!')
const event = {
version: '2.0',
routeKey: '$default',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
rawPath: '/post',
rawQueryString: '',
body: Buffer.from(searchParam.toString()).toString('base64'),
isBase64Encoded: true,
requestContext: testApiGatewayRequestContextV2,
}
testApiGatewayRequestContextV2.http.method = 'POST'
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('Good Morning Lambda!')
})
it('Should handle a POST request with binary and return a 200 response', async () => {
const array = new Uint8Array([0xc0, 0xff, 0xee])
const buffer = Buffer.from(array)
const event = {
version: '1.0',
resource: '/post/binary',
httpMethod: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded',
},
path: '/post/binary',
body: buffer.toString('base64'),
isBase64Encoded: true,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('3 bytes')
})
it('Should handle a request and return a 401 response with Basic auth', async () => {
const event = {
version: '1.0',
resource: '/auth/abc',
httpMethod: 'GET',
headers: {
'Content-Type': 'plain/text',
},
path: '/auth/abc',
body: null,
isBase64Encoded: true,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(401)
})
it('Should handle a request and return a 200 response with Basic auth', async () => {
const credential = 'aG9uby11c2VyLWE6aG9uby1wYXNzd29yZC1h'
const event = {
version: '1.0',
resource: '/auth/abc',
httpMethod: 'GET',
headers: {
'Content-Type': 'plain/text',
Authorization: `Basic ${credential}`,
},
path: '/auth/abc',
body: null,
isBase64Encoded: true,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(response.body).toBe('Good Night Lambda!')
})
it('Should handle a GET request and return custom context', async () => {
const event = {
version: '1.0',
resource: '/custom-context/apigw',
httpMethod: 'GET',
headers: { 'content-type': 'application/json' },
path: '/custom-context/apigw',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const response = await handler(event)
expect(response.statusCode).toBe(200)
expect(JSON.parse(response.body).customProperty).toEqual('customValue')
})
it('Should handle a GET request and context', async () => {
const event = {
version: '1.0',
resource: '/lambda-context',
httpMethod: 'GET',
headers: { 'content-type': 'application/json' },
path: '/lambda-context',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const context: LambdaContext = {
callbackWaitsForEmptyEventLoop: false,
functionName: 'myLambdaFunction',
functionVersion: '1.0.0',
invokedFunctionArn: 'arn:aws:lambda:us-west-2:123456789012:function:myLambdaFunction',
memoryLimitInMB: '128',
awsRequestId: 'c6af9ac6-a7b0-11e6-80f5-76304dec7eb7',
logGroupName: '/aws/lambda/myLambdaFunction',
logStreamName: '2016/11/14/[$LATEST]f2d4b21cfb33490da2e8f8ef79a483s4',
getRemainingTimeInMillis: () => {
return 60000 // 60 seconds
},
}
const response = await handler(event, context)
expect(response.statusCode).toBe(200)
expect(JSON.parse(response.body).callbackWaitsForEmptyEventLoop).toEqual(false)
})
it('Should handle a POST request and return a 200 response with cookies set (APIGatewayProxyEvent V1 and V2)', async () => {
const apiGatewayEvent = {
version: '1.0',
resource: '/cookie',
httpMethod: 'POST',
headers: { 'content-type': 'text/plain' },
path: '/cookie',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const apiGatewayResponse = await handler(apiGatewayEvent)
expect(apiGatewayResponse.statusCode).toBe(200)
expect(apiGatewayResponse.multiValueHeaders).toHaveProperty('set-cookie', [
testCookie1.serialized,
testCookie2.serialized,
])
const apiGatewayEventV2 = {
version: '2.0',
routeKey: '$default',
httpMethod: 'POST',
headers: { 'content-type': 'text/plain' },
rawPath: '/cookie',
rawQueryString: '',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContextV2,
}
const apiGatewayResponseV2 = await handler(apiGatewayEventV2)
expect(apiGatewayResponseV2.statusCode).toBe(200)
expect(apiGatewayResponseV2).toHaveProperty('cookies', [
testCookie1.serialized,
testCookie2.serialized,
])
})
describe('headers', () => {
describe('single-value headers', () => {
it('Should extract single-value headers and return 200 (ALBProxyEvent)', async () => {
const event = {
body: '{}',
httpMethod: 'POST',
isBase64Encoded: false,
path: '/headers',
headers: {
host: 'localhost',
foo: 'bar',
},
requestContext: testALBRequestContext,
}
const albResponse = await handler(event)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.headers).toEqual(
expect.objectContaining({
'content-type': 'application/json; charset=UTF-8',
})
)
})
it('Should extract single-value headers and return 200 (APIGatewayProxyEvent)', async () => {
const apigatewayProxyEvent = {
version: '1.0',
resource: '/headers',
httpMethod: 'POST',
headers: {
host: 'localhost',
foo: 'bar',
},
path: '/headers',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const apiGatewayResponseV2 = await handler(apigatewayProxyEvent)
expect(apiGatewayResponseV2.statusCode).toBe(200)
})
it('Should extract single-value headers and return 200 (APIGatewayProxyEventV2)', async () => {
const apigatewayProxyV2Event = {
version: '2.0',
routeKey: '$default',
headers: {
host: 'localhost',
foo: 'bar',
},
rawPath: '/headers',
rawQueryString: '',
requestContext: testApiGatewayRequestContextV2,
resource: '/headers',
body: null,
isBase64Encoded: false,
}
const apiGatewayResponseV2 = await handler(apigatewayProxyV2Event)
expect(apiGatewayResponseV2.statusCode).toBe(200)
})
})
describe('multi-value headers', () => {
it('Should extract multi-value headers and return 200 (ALBProxyEvent)', async () => {
const event = {
body: '{}',
httpMethod: 'POST',
isBase64Encoded: false,
path: '/headers',
multiValueHeaders: {
host: ['localhost'],
foo: ['bar'],
},
requestContext: testALBRequestContext,
}
const albResponse = await handler(event)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.multiValueHeaders).toBeDefined()
expect(albResponse.multiValueHeaders).toEqual(
expect.objectContaining({
'content-type': ['application/json; charset=UTF-8'],
})
)
})
it('Should extract multi-value headers and return 200 (APIGatewayProxyEvent)', async () => {
const apigatewayProxyEvent = {
version: '1.0',
resource: '/headers',
httpMethod: 'POST',
headers: {},
multiValueHeaders: {
host: ['localhost'],
foo: ['bar'],
},
path: '/headers',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const apiGatewayResponseV2 = await handler(apigatewayProxyEvent)
expect(apiGatewayResponseV2.statusCode).toBe(200)
})
})
})
it('Should handle a POST request and return a 200 response if cookies match (APIGatewayProxyEvent V1 and V2)', async () => {
const apiGatewayEvent = {
version: '1.0',
resource: '/cookie',
httpMethod: 'GET',
headers: {
'content-type': 'text/plain',
cookie: [testCookie1.serialized, testCookie2.serialized].join('; '),
},
path: '/cookie',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContext,
}
const apiGatewayResponse = await handler(apiGatewayEvent)
expect(apiGatewayResponse.statusCode).toBe(200)
expect(apiGatewayResponse.body).toBe('Valid Cookies')
expect(apiGatewayResponse.headers['content-type']).toMatch(/^text\/plain/)
expect(apiGatewayResponse.isBase64Encoded).toBe(false)
const apiGatewayEventV2 = {
version: '2.0',
routeKey: '$default',
headers: { 'content-type': 'text/plain' },
rawPath: '/cookie',
cookies: [testCookie1.serialized, testCookie2.serialized],
rawQueryString: '',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContextV2,
}
testApiGatewayRequestContextV2.http.method = 'GET'
const apiGatewayResponseV2 = await handler(apiGatewayEventV2)
expect(apiGatewayResponseV2.statusCode).toBe(200)
expect(apiGatewayResponseV2.body).toBe('Valid Cookies')
expect(apiGatewayResponseV2.headers['content-type']).toMatch(/^text\/plain/)
expect(apiGatewayResponseV2.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 200 response if cookies match (ALBProxyEvent) with default headers', async () => {
const albEventDefaultHeaders = {
version: '1.0',
resource: '/cookie',
httpMethod: 'GET',
headers: {
'content-type': 'text/plain',
cookie: [testCookie1.serialized, testCookie2.serialized].join('; '),
},
path: '/cookie',
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const albResponse = await handler(albEventDefaultHeaders)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.body).toBe('Valid Cookies')
expect(albResponse.headers['content-type']).toMatch(/^text\/plain/)
expect(albResponse.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 200 response if cookies match (ALBProxyEvent) with multi value headers', async () => {
const albEventMultiValueHeaders = {
version: '1.0',
resource: '/cookie',
httpMethod: 'GET',
multiValueHeaders: {
'content-type': ['text/plain'],
cookie: [testCookie1.serialized, testCookie2.serialized],
},
path: '/cookie',
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const albResponse = await handler(albEventMultiValueHeaders)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.body).toBe('Valid Cookies')
expect(albResponse.headers['content-type']).toMatch(/^text\/plain/)
expect(albResponse.isBase64Encoded).toBe(false)
})
it('Should handle a POST request and return a 200 response with cookies (ALBProxyEvent) with default headers', async () => {
const albEventDefaultHeaders = {
version: '1.0',
resource: '/cookie',
httpMethod: 'POST',
headers: {
'content-type': 'text/plain',
cookie: [testCookie1.serialized, testCookie2.serialized].join(', '),
},
path: '/cookie',
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const albResponse = await handler(albEventDefaultHeaders)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.body).toBe('Cookies Set')
expect(albResponse.headers['content-type']).toMatch(/^text\/plain/)
expect(albResponse.multiValueHeaders).toBeUndefined()
expect(albResponse.headers['set-cookie']).toEqual(
[testCookie1.serialized, testCookie2.serialized].join(', ')
)
expect(albResponse.isBase64Encoded).toBe(false)
})
it('Should handle a POST request and return a 200 response with cookies (ALBProxyEvent) with multi value headers', async () => {
const albEventDefaultHeaders = {
version: '1.0',
resource: '/cookie',
httpMethod: 'POST',
multiValueHeaders: {
'content-type': ['text/plain'],
cookie: [testCookie1.serialized, testCookie2.serialized],
},
path: '/cookie',
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const albResponse = await handler(albEventDefaultHeaders)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.body).toBe('Cookies Set')
expect(albResponse.headers['content-type']).toMatch(/^text\/plain/)
expect(albResponse.multiValueHeaders).toBeDefined()
expect(albResponse.multiValueHeaders && albResponse.multiValueHeaders['set-cookie']).toEqual(
expect.arrayContaining([testCookie1.serialized, testCookie2.serialized])
)
expect(albResponse.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 200 response with queryStringParameters (ALBProxyEvent)', async () => {
const albEventDefaultHeaders = {
resource: '/query-params',
httpMethod: 'GET',
headers: {
'content-type': 'application/json',
},
queryStringParameters: {
key1: 'value1',
key2: 'value2',
},
path: '/query-params',
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const albResponse = await handler(albEventDefaultHeaders)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.body).toContain(
JSON.stringify({
key1: 'value1',
key2: 'value2',
})
)
expect(albResponse.headers['content-type']).toMatch(/^application\/json/)
expect(albResponse.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 200 response with single value multiQueryStringParameters (ALBProxyEvent)', async () => {
const albEventDefaultHeaders = {
resource: '/query-params',
httpMethod: 'GET',
multiValueHeaders: {
'content-type': ['application/json'],
},
multiValueQueryStringParameters: {
key1: ['value1'],
key2: ['value2'],
},
path: '/query-params',
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const albResponse = await handler(albEventDefaultHeaders)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.body).toContain(
JSON.stringify({
key1: 'value1',
key2: 'value2',
})
)
expect(albResponse.headers['content-type']).toMatch(/^application\/json/)
expect(albResponse.isBase64Encoded).toBe(false)
})
it('Should handle a GET request and return a 200 response with multi value multiQueryStringParameters (ALBProxyEvent)', async () => {
const albEventDefaultHeaders = {
resource: '/query-params',
httpMethod: 'GET',
multiValueHeaders: {
'content-type': ['application/json'],
},
multiValueQueryStringParameters: {
key1: ['value1'],
key2: ['value2', 'otherValue2'],
},
path: '/multi-query-params',
body: null,
isBase64Encoded: false,
requestContext: testALBRequestContext,
}
const albResponse = await handler(albEventDefaultHeaders)
expect(albResponse.statusCode).toBe(200)
expect(albResponse.body).toContain(
JSON.stringify({
key1: ['value1'],
key2: ['value2', 'otherValue2'],
})
)
expect(albResponse.headers['content-type']).toMatch(/^application\/json/)
expect(albResponse.isBase64Encoded).toBe(false)
})
})
describe('streamHandle function', () => {
const app = new Hono<{ Bindings: Bindings }>()
app.get('/', (c) => {
return c.text('Hello Lambda!')
})
app.get('/stream/text', async (c) => {
return c.streamText(async (stream) => {
for (let i = 0; i < 3; i++) {
await stream.writeln(`${i}`)
await stream.sleep(1)
}
})
})
app.get('/sse', async (c) => {
return streamSSE(c, async (stream) => {
let id = 0
const maxIterations = 2
while (id < maxIterations) {
const message = `Message\nIt is ${id}`
await stream.writeSSE({ data: message, event: 'time-update', id: String(id++) })
await stream.sleep(10)
}
})
})
const handler = streamHandle(app)
it('Should streamHandle a GET request and return a 200 response (LambdaFunctionUrlEvent)', async () => {
const event = {
headers: { 'content-type': ' binary/octet-stream' },
rawPath: '/stream/text',
rawQueryString: '',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContextV2,
}
testApiGatewayRequestContextV2.http.method = 'GET'
const mockReadableStream = new Readable({
// eslint-disable-next-line @typescript-eslint/no-empty-function
read() {},
})
mockReadableStream.push('0\n')
mockReadableStream.push('1\n')
mockReadableStream.push('2\n')
mockReadableStream.push('3\n')
mockReadableStream.push(null) // EOF
await handler(event, mockReadableStream)
const chunks = []
for await (const chunk of mockReadableStream) {
chunks.push(chunk)
}
expect(chunks.join('')).toContain('0\n1\n2\n3\n')
})
it('Should handle a GET request for an SSE stream and return the correct chunks', async () => {
const event = {
headers: { 'content-type': 'text/event-stream' },
rawPath: '/sse',
rawQueryString: '',
body: null,
isBase64Encoded: false,
requestContext: testApiGatewayRequestContextV2,
}
testApiGatewayRequestContextV2.http.method = 'GET'
const mockReadableStream = new Readable({
// eslint-disable-next-line @typescript-eslint/no-empty-function
read() {},
})
const initContentType = {
'Content-Type': 'application/vnd.awslambda.http-integration-response',
}
mockReadableStream.push(JSON.stringify(initContentType))
// Send JSON formatted response headers, followed by 8 NULL characters as a separator
const httpResponseMetadata = {
statusCode: 200,
headers: { 'Custom-Header': 'value' },
cookies: ['session=abcd1234'],
}
const jsonResponsePrelude = JSON.stringify(httpResponseMetadata) + Buffer.alloc(8, 0).toString()
mockReadableStream.push(jsonResponsePrelude)
mockReadableStream.push('data: Message\ndata: It is 0\n\n')
mockReadableStream.push('data: Message\ndata: It is 1\n\n')
mockReadableStream.push(null) // EOF
await handler(event, mockReadableStream)
const chunks = []
for await (const chunk of mockReadableStream) {
chunks.push(chunk)
}
// If you have chunks, you might want to convert them to strings before checking
const output = Buffer.concat(chunks).toString()
expect(output).toContain('data: Message\ndata: It is 0\n\n')
expect(output).toContain('data: Message\ndata: It is 1\n\n')
// Assertions for the newly added header and prelude
expect(output).toContain('application/vnd.awslambda.http-integration-response')
expect(output).toContain('Custom-Header')
expect(output).toContain('session=abcd1234')
// Check for JSON prelude and NULL sequence
const nullSequence = '\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000'
expect(output).toContain(jsonResponsePrelude.replace(nullSequence, ''))
})
})