Locust 类的使用

 HttpLocust类

可定义多个HttpLocust类，即多个用户可执行不同的任务或者相同的任务，但是执行频率不一样，用weight进行约定。

# coding:utf-8
from locust import HttpLocust, TaskSet, task
import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

class UserTask1(TaskSet):
    @task
    def task1(self):
        self.client.get("/", headers=header, verify=False)

class UserTask2(TaskSet):
    @task
    def task2(self):
        self.client.get("/belle-ls/", verify=False)

class UserOne(HttpLocust):
    weight = 1
    task_set = UserTask1

class UserTwo(HttpLocust):
    weight = 2
    task_set = UserTask2

终端命令：

 $ locust -f locustDemo2.py UserOne UserTwo --host=https://www.cnblogs.com
 [2019-03-07 14:55:49,299] LiuShuangdeiMac.local/INFO/locust.main: Starting web monitor at *:8089
 [2019-03-07 14:55:49,300] LiuShuangdeiMac.local/INFO/locust.main: Starting Locust 0.9.0
 [2019-03-07 14:55:58,657] LiuShuangdeiMac.local/INFO/locust.runners: Hatching and swarming 10 clients at the rate 10 clients/s...
 [2019-03-07 14:55:59,678] LiuShuangdeiMac.local/INFO/locust.runners: All locusts hatched: UserTwo: 7, UserOne: 3

运行结果如下，UserTwo 的执行频率是UserOne的两倍多

TaskSet类：执行频率的约定及嵌套

1. task修饰符 @task or @task(1)  1为权重，权重越高，执行比例越大

2. taskSet嵌套，需要用 interrupt()跳出

 写法1：

# coding:utf-8

from locust import HttpLocust, TaskSet, task
import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
class UserTask(TaskSet):
    @task(2)
    class stayMe(TaskSet):
        @task(2)
        def MyHome(self):
            self.client.get("/belle-ls/", verify=False)

        @task(4)
        def MyCote(self):
            self.client.get("/belle-ls/category/1412671.html", verify=False)

        @task(1)
        def Out(self):
            self.interrupt() #跳出当前TaskSet类，才有机会执行其他行为

    @task(1)
    def BlogHome(self):
        self.client.get("/", verify=False)
class User(HttpLocust):
    task_set = UserTask

写法2：

class stayMe(TaskSet):
    @task(2)
    def MyHome(self):
        self.client.get("/belle-ls/", verify=False)

    @task(4)
    def MyCote(self):
　　　　 self.client.get("/belle-ls/category/1412671.html", verify=False)

    @task(1)
    def Out(self):
        self.interrupt()

class UserTask(TaskSet):
    tasks= {stayMe:2}
    @task(1)
    def BlogHome(self):self.client.get("/", verify=False)class User(HttpLocust):
    task_set = UserTask

ResponseContextManager类：

class UserTask(TaskSet):
    @task(1)
    def BlogHome(self):
        with self.client.get("/", headers = header, catch_response = True, verify = False) as response:
            if response.status_code == 200:
                response.failure('Failed!')
            else:
                response.success()

class User(HttpLocust):
    task_set = UserTask

ResponseContextManger类是Response类的子类，多了两个failure()和success()方法。

上面的例子：使用with语句及catch_response参数可以截获原始响应，把所有status_code是200的响应都当做失败响应。这里success()和failure(str)的调用会体现在结果的统计上。

合并请求：

比如进入博客分类，其实属于一条测试用例，但是由于参数的不同，会再测试结果中显示两行，比如：

https://www.cnblogs.com/belle-ls/category/1412671.html

https://www.cnblogs.com/belle-ls/category/1411809.html

如何合并呢？可以在get请求参数中加个name参数来将统计叠加在一起，name也可以用来对Name显示为路径进行重命名

class UserTask(TaskSet):
    @task(1)
    def BlogHome(self):
        self.client.get("/belle-ls/category/1412671.html", headers=header, verify=False, name = "category")
        self.client.get("/belle-ls/category/1411809.html", headers=header, verify=False, name = "category")

class User(HttpLocust):
    task_set = UserTask

效果：

参考文章：https://blog.csdn.net/a464057216/article/details/48394213