使用mocha运行node.js，在docker上使用postgres数据库运行chai。 我使用yaml文件创建所有容器。我有一个用于处理其他事情的容器，但在这种情况下，基本上是一个用于测试的容器和一个用于数据库的容器。我有一个从我的literate-app容器调用的有效插入函数。但是，在我尝试过的所有方法中，我无法从用于测试的新容器中连接到该容器，而我正在尝试测试postgres中是否存在表
我尝试编写自己的代码。我尝试使用pg和pg-pool几种方式编写代码。编写并可以插入的当前代码无效。我试图创建一个名为test_user的新用户，可能是这种情况，但无济于事。
遇到我的错误
Attaching to literate-webapp_test_1
test_1 |
test_1 | > @ mocha /literate-app
test_1 | > mocha --reporter spec ./test/test/postgressFactoryTest.js
test_1 |
test_1 |
test_1 |
test_1 | PostGres
test_1 | tableExists
test_1 | 1) should be 0 before connecting
test_1 | inside connect
test_1 | 2) should be not 0 after connecting
test_1 | setName
test_1 | ✓ should be "None Set" before calling"
test_1 | ✓ should be "username" after calling
test_1 | getCookie
test_1 | 3) should return a valid cookie string
test_1 |
test_1 |
test_1 | 2 passing (318ms)
test_1 | 3 failing
test_1 |
test_1 | 1) PostGres
test_1 | tableExists
test_1 | should be 0 before connecting:
test_1 | AssertionError: expected 0 to equal undefined
test_1 | at Context.<anonymous> (test/test/postgressFactoryTest.js:18:10)
test_1 | at processImmediate (internal/timers.js:443:21)
test_1 |
test_1 | 2) PostGres
test_1 | tableExists
test_1 | should be not 0 after connecting:
test_1 | TypeError: Cannot read property 'then' of undefined
test_1 | at Context.<anonymous> (test/test/postgressFactoryTest.js:38:7)
test_1 | at processImmediate (internal/timers.js:443:21)
test_1 |
test_1 | 3) PostGres
test_1 | getCookie
test_1 | should return a valid cookie string:
test_1 | ReferenceError: document is not defined
test_1 | at PostGres.getCookie (literate-app/js/postgres.factory.js:273:43)
test_1 | at Context.<anonymous> (test/test/postgressFactoryTest.js:90:25)
test_1 | at processImmediate (internal/timers.js:443:21)
test_1 |
test_1 |
test_1 |
test_1 | (node:30) UnhandledPromiseRejectionWarning: Error: getaddrinfo ENOTFOUND postgres postgres:5432
test_1 | at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:58:26)
test_1 | (node:30) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
test_1 | (node:30) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will
terminate the Node.js process with a non-zero exit code.
test_1 | npm ERR! code ELIFECYCLE
test_1 | npm ERR! errno 3
test_1 | npm ERR! @ mocha: `mocha --reporter spec ./test/test/postgressFactoryTest.js`
test_1 | npm ERR! Exit status 3
test_1 | npm ERR!
test_1 | npm ERR! Failed at the @ mocha script.
test_1 | npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
test_1 |
test_1 | npm ERR! A complete log of this run can be found in:
test_1 | npm ERR! /root/.npm/_logs/2019-04-02T20_03_20_740Z-debug.log
在这里使用码头工人Yaml
version: '3'
services:
webapp:
build: ./literate-app
command: ["./wait-for-it.sh","postgres:5432","--","npm","start"]
depends_on:
- postgres
links:
- postgres
command: nodemon -e vue,js,css start.js
environment:
- DB_HOST=postgres
ports:
- "3000:3000"
networks:
- literate-net
server:
build: ./readability-server
command: nodemon -L --inspect=0.0.0.0:5555 server.js
networks:
- literate-net
redis_db:
image: redis:alpine
networks:
- literate-net
postgres:
restart: 'always'
#image: 'bitnami/postgresql:latest'
volumes:
- /bitnami
# - ./schema.sql:/docker-entrypoint-initdb.d/schema.sql
ports:
- "5432:5432"
networks:
- literate-net
environment:
- "FILLA_DB_USER=my_user"
- "FILLA_DB_PASSWORD=password123"
- "FILLA_DB_DATABASE=my_database"
- "POSTGRES_PASSWORD=password123"
build: './database-creation'
test:
image: node:latest
build: ./test
working_dir: /literate-app
volumes:
- .:/literate-app
command:
npm run mocha
links:
- postgres
depends_on:
- postgres
environment:
- DB_HOST=postgres
networks:
literate-net:
driver: bridge
在这里测试文件
describe('tableExists', function () {
it('should be 0 before connecting', function () {
var PostGres = new PostGresClass();
var config = [];
var value = PostGres.tableExists(config, 'alpharead');
assert.equal(0, value);
});
it('should be not 0 after connecting', function () {
var config = {
user: 'my_user',
host: 'postgres',
database: 'my_database',
password: 'password123',
port: 5432,
max: 20,
idleTimeoutMillis: 30000,
connectionTimeoutMillis: 2000,
};
var pool = new Pool(config);
pool.connect()
console.log("inside connect")
.then(client => {
console.log("querying client")
console.log("query return: " + client.query(`SELECT count(*) as cnt FROM pg_tables t WHERE tableowner=current_user and table_name= ${table_name} AND schema_name=my_database`))
return client.query(`SELECT count(*) as cnt FROM pg_tables t WHERE tableowner=current_user and table_name= ${table_name} AND schema_name=my_database`)
.then(res => {
console.log("returning res")
console.log(res)
client.release()
return release()
})
.catch(err => {
console.log("returning error")
console.log(err.stack)
return 0
})
})
/*var PostGres = new PostGresClass();
var config = {
user: 'my_user',
host: 'postgresql',
database: 'my_database',
password: 'password123',
port: 5432,
max: 20,
idleTimeoutMillis: 30000,
connectionTimeoutMillis: 2000,
};
//var pool = new Pool(config);
var value = PostGres.tableExists(config, `alpharead`);*/
assert.equal(1, value);
});
这里是实际连接和插入数据的代码
logEvent(eventType, eventData, eSid, ePid){
dt = new Date();
var utcDate = dt.toUTCString();
sid = eSid;
pid = ePid;
if(eventType == "Set Name/New Session"){
this.setName(eventData)
}
pool.connect()
.then(client => {
return client.query('INSERT INTO public.alphatwo(sessionid, queryid, timestamp, eventtype, eventdata) VALUES ($1, $2, $3, $4, $5)', [sid, pid, utcDate, eventType, eventData])
.then(res => {
console.log("successfully insterted data into alphatwo");
client.release();
})
.catch(e => {
console.log("didnt find database alphatwo or doesnt exist");
console.log(e);
client.release();
})
})
.catch(e => {
console.log("CAUGHT ERROR in connecting to database")
console.log(e)
client.release();
})
}
它具有相同的设置，只是不想复制很多评论。
所以问题是为什么我不能通过此容器连接到数据库。还有一些解决方法。我已经看过一些docker文件，但这确实存在并且依赖yaml。
答案 0 :(得分：0)
所以我找到了答案。
基本上在其中注明
测试： 图片：node：latest 构建：./ test working_dir：/ literate-app 数量： -。：/ literate-app 命令： npm运行摩卡 链接： -postgres 取决于： -postgres 环境： -DB_HOST = postgres
问题是这个
links:
-postgres
Docker现在改为使用网络。因此，将其替换为
networks:
- literate-net
解决了问题