golang框架的自动化测试方法：如何处理异步请求

package httpclient

import (
    "context"
    "sync"
    "testing"
    "time"

    "github.com/gin-gonic/gin"
    "github.com/onsi/gomega"
)

type AsyncHTTPClient struct {
    sync.Mutex
    response *gin.Context
}

func (c *AsyncHTTPClient) Call(ctx context.Context, method, url string) {
    time.Sleep(200 * time.Millisecond)

    r := gin.NewContext(nil)
    r.Request = c.requestBody(method, url)
    c.Lock()
    c.response = r
    c.Unlock()
}

func TestAsyncHTTPGet(t *testing.T) {
    g := gomega.NewGomegaWithT(t)

    var httpClient AsyncHTTPClient
    url := "http://example.com"

    go func() {
        ctx := context.Background()
        httpClient.Call(ctx, "GET", url)
    }()

    g.Eventually(
        func() *gin.Context { httpClient.GetResponse() },
        1*time.Second,
        100*time.Millisecond,
    ).Should(gomega.Equal(requestWithMethodAndURL("GET", url)))
}

func (c *AsyncHTTPClient) GetResponse() *gin.Context {
    c.Lock()
    defer c.Unlock()
    return c.response
}

func requestWithMethodAndURL(method, url string) gomega.OmegaMatcher {
    return gomega.And(
        gomega.HaveField("Request", gomega.BeComparable()),
        gomega.HaveField("Request.Method", gomega.Equal(method)),
        gomega.HaveField("Request.URL", gomega.BeComparable()),
        gomega.HaveField("Request.URL.Path", gomega.Equal(url)),
    )
}