Javascript Jest:测试函数时的逻辑问题
我想测试一个名为getRunningContainers的函数,它基本上返回系统上所有正在运行的容器。它在内部使用了两个函数,分别称为listContainers和getContainerJavascript Jest:测试函数时的逻辑问题,javascript,typescript,testing,jestjs,Javascript,Typescript,Testing,Jestjs,我想测试一个名为getRunningContainers的函数,它基本上返回系统上所有正在运行的容器。它在内部使用了两个函数,分别称为listContainers和getContainer async getRunningContainers(): Promise<ContainerInspectInfo[] | undefined> { const runningContainers: ContainerInspectInfo[] = []; const opt
async getRunningContainers(): Promise<ContainerInspectInfo[] | undefined> {
const runningContainers: ContainerInspectInfo[] = [];
const opts: any = {
filters: {
status: ['running'],
},
};
try {
const containers: ContainerInfo[] = await this.client.listContainers(
opts
);
for (const c of containers) {
const container: ContainerInterface = await this.client.getContainer(
c.Id
);
const containerInspect: ContainerInspectInfo = await container.inspect();
runningContainers.push(containerInspect);
}
return runningContainers;
} catch (err) {
console.log(`running containers error: ${err}`);
return;
}
}
我不确定是否需要更多的信息,所以如果需要,请随时告诉我。谢谢
import {
Container as ContainerInterface,
ContainerCreateOptions,
ContainerInfo,
ContainerInspectInfo,
HostConfig,
} from 'dockerode';
export class Container {
client: any;
constructor(client: any) {
this.client = client;
}
async create(
opts: any
): Promise<ContainerInterface | undefined> {
let container: ContainerInterface;
const { name, Image, Cmd, HostConfig, Labels, Entrypoint, Env } = opts;
try {
const createOpts: ContainerCreateOptions = {
name,
Image,
Cmd,
HostConfig,
Labels,
Entrypoint,
Env,
};
container = await this.client.createContainer(createOpts);
return container;
} catch (err) {
console.log(`create container error: ${err}`);
return;
}
}
async getRunningContainers(): Promise<ContainerInspectInfo[] | undefined> {
const runningContainers: ContainerInspectInfo[] = [];
const opts: any = {
filters: {
status: ['running'],
},
};
try {
const containers: ContainerInfo[] = await this.client.listContainers(
opts
);
for (const c of containers) {
const container: ContainerInterface = await this.client.getContainer(
c.Id
);
const containerInspect: ContainerInspectInfo = await container.inspect();
runningContainers.push(containerInspect);
}
return runningContainers;
} catch (err) {
console.log(`running containers error: ${err}`);
return;
}
}
static newContainerConfig(
oldContainer: ContainerInspectInfo,
newImage: string
): ContainerCreateOptions {
const config: ContainerCreateOptions = {
name: oldContainer['Name'].replace('/', ''),
Image: newImage,
Cmd: oldContainer['Config']['Cmd'],
HostConfig: oldContainer['HostConfig'],
Labels: oldContainer['Config']['Labels'],
Entrypoint: oldContainer['Config']['Entrypoint'],
Env: oldContainer['Config']['Env'],
};
return config;
}
}
导入{
容器作为容器接口,
ContainerCreateOptions,
集装箱信息,
ContainerInspectInfo,
主机配置,
}来自“dockerode”;
出口类集装箱{
客户:任何;
建造商(客户:任何){
this.client=client;
}
异步创建(
选择:任何
):承诺{
let容器:容器接口;
const{name,Image,Cmd,HostConfig,Labels,Entrypoint,Env}=opts;
试一试{
const createOpts:ContainerCreateOptions={
名称
形象,,
Cmd,
主机配置,
标签,
入口点,
环境,
};
container=等待this.client.createContainer(createOpts);
返回容器;
}捕捉(错误){
log(`create container error:${err}`);
返回;
}
}
异步getRunningContainers():承诺{
const runningContainers:ContainerInspectInfo[]=[];
常量选项:任意={
过滤器:{
状态:[“正在运行”],
},
};
试一试{
const containers:ContainerInfo[]=等待this.client.listContainers(
选择
);
用于(容器的常数c){
const container:ContainerInterface=等待this.client.getContainer(
c、 身份证
);
const containerInspect:ContainerInspectInfo=wait container.inspect();
运行容器。推送(容器检查);
}
返回运行容器;
}捕捉(错误){
log(`running containers error:${err}`);
返回;
}
}
静态newContainerConfig(
旧容器:ContainerInspectInfo,
newImage:string
):ContainerCreateOptions{
常量配置:ContainerCreateOptions={
名称:oldContainer['name'].替换('/',''),
图片:新图片,
Cmd:oldContainer['Config']['Cmd'],
HostConfig:oldContainer['HostConfig'],
标签:oldContainer['Config']['Labels'],
入口点:旧容器['Config']['Entrypoint'],
Env:oldContainer['Config']['Env'],
};
返回配置;
}
}
由于您的虚拟容器是JSON,您可能希望在MockDockerContainer
中实现您的getContainer
方法,如下所示:
const MockDockerClient = {
// ... current implementation ...
getContainer: (id: any) => new Promise((resolve, reject) => {
resolve({
inspect: () => new Promise(res => res(dummy_container)),
});
})
}
这是因为您正在等待getContainer()的结果。inspect()-因此inspect()需要是一个基于异步/承诺的函数,它将返回您期望的结果。我假设这是您容器的JSON,但这可能是错误的。容器类中有什么?您是否看到`console.log(运行容器错误:${err}
);`在控制台中被触发?不,我没有看到任何控制台。日志触发和容器类表示类似的东西是的-如果不查看容器的代码,就看不到任何问题。您可以尝试从getRunningContainers中的catch块返回一个不同的值,即123,以排除这是返回点-可能只是日志没有出现。我在问题中添加了container.ts。
const MockDockerClient = {
// ... current implementation ...
getContainer: (id: any) => new Promise((resolve, reject) => {
resolve({
inspect: () => new Promise(res => res(dummy_container)),
});
})
}