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# 开发扩展
HttpRunner 除了作为命令行工具使用外,还可以作为软件包集成到你自己的项目中。
简单来说HttpRunner 提供了运行 YAML/JSON 格式测试用例的能力,并能返回详细的测试结果信息。
## HttpRunner class
HttpRunner 以 `类class` 的形式对外提供调用支持,类名`HttpRunner`,导入方式如下:
```python
from httprunner.api import HttpRunner
```
### 可用初始化参数
`HttpRunner` 内部用于驱动测试执行的是`unittest.TextTestRunner`,在初始化 `HttpRunner` 时可以使用 TextTestRunner 的所有可用参数(详情可阅读[官方文档][TextTestRunner])。除此之外,`HttpRunner`还额外支持一个参数,`http_client_session`,可用于指定不同的客户端类型。
通常情况下,初始化 `HttpRunner` 时常用的参数有如下几个:
- `resultclass`: HtmlTestResult/TextTestResult默认值为 HtmlTestResult
- `failfast`: 设置为 True 时,测试在首次遇到错误或失败时会停止运行;默认值为 False
- `http_client_session`: 传入`requests.Session()`时进行自动化测试(默认),传入`locust.client.Session()`时进行性能测试
例如,如需初始化 `HttpRunner` 时设置 `failfast` 为 False初始化方式如下所示:
```python
from httprunner.api import HttpRunner
runner = HttpRunner(failfast=False)
```
### 可用调用方法
`HttpRunner` 中,对外提供了两个方法:
- `run`: 运行测试用例
- `gen_html_report`: 生成 HTML 测试报告
### 可用属性
`HttpRunner` 中,对外提供了一个属性:
- `summary`: 测试执行结果
该属性需要在调用 `run` 方法后获取。
## 运行测试用例
`HttpRunner` 的 run 方法有三个参数:
- `path_or_testcases`: 指定要运行的测试用例支持传入两类参数YAML/JSON 格式测试用例文件路径,或者标准的测试用例结构体;
- `dot_env_path`(可选): 指定加载环境变量文件(.env的路径默认值为当前工作目录PWD中的 `.env` 文件
- `mapping`(可选): 变量映射,可用于对传入测试用例中的变量进行覆盖替换。
### 传入测试用例文件路径
指定测试用例文件路径支持三种形式:
- YAML/JSON 文件路径,支持绝对路径和相对路径
- 包含 YAML/JSON 文件的文件夹,支持绝对路径和相对路径
- 文件路径和文件夹路径的混合情况list/set
```python
# 文件路径
runner.run("docs/data/demo-quickstart-2.yml")
# 文件夹路径
runner.run("docs/data/")
# 混合情况
runner.run(["docs/data/", "files/demo-quickstart-2.yml"])
```
如需指定加载环境变量文件(.env的路径或者需要对测试用例中的变量进行覆盖替换则可使用 `dot_env_path``mapping` 参数。
```python
# dot_env_path
runner.run("docs/data/demo-quickstart-2.yml", dot_env_path="/path/to/.env")
# mapping
override_mapping = {
"device_sn": "XXX"
}
runner.run("docs/data/demo-quickstart-2.yml", mapping=override_mapping)
```
### 传入标准的测试用例结构体
除了传入测试用例文件路径,还可以直接传入标准的测试用例结构体。
以 [demo-quickstart-2.yml](/data/demo-quickstart-2.yml) 为例,对应的数据结构体如下所示:
```json
[
{
"config": {
"name": "testcase description",
"request": {
"base_url": "",
"headers": {
"User-Agent": "python-requests/2.18.4"
}
},
"variables": [],
"output": ["token"],
"path": "/abs-path/to/demo-quickstart-2.yml",
"refs": {
"env": {},
"debugtalk": {
"variables": {
"SECRET_KEY": "DebugTalk"
},
"functions": {
"gen_random_string": <function gen_random_string at 0x108596268>,
"get_sign": <function get_sign at 0x1085962f0>,
"get_user_id": <function get_user_id at 0x108596378>,
"get_account": <function get_account at 0x108596400>,
"get_os_platform": <function get_os_platform at 0x108596488>
}
},
"def-api": {},
"def-testcase": {}
}
},
"teststeps": [
{
"name": "/api/get-token",
"request": {
"url": "http://127.0.0.1:5000/api/get-token",
"method": "POST",
"headers": {"Content-Type": "application/json", "app_version": "2.8.6", "device_sn": "FwgRiO7CNA50DSU", "os_platform": "ios", "user_agent": "iOS/10.3"},
"json": {"sign": "9c0c7e51c91ae963c833a4ccbab8d683c4a90c98"}
},
"extract": [
{"token": "content.token"}
],
"validate": [
{"eq": ["status_code", 200]},
{"eq": ["headers.Content-Type", "application/json"]},
{"eq": ["content.success", true]}
]
},
{
"name": "/api/users/1000",
"request": {"url": "http://127.0.0.1:5000/api/users/1000", "method": "POST", "headers": {"Content-Type": "application/json", "device_sn": "FwgRiO7CNA50DSU", "token": "$token"},
"json": {"name": "user1", "password": "123456"}},
"validate": [
{"eq": ["status_code", 201]},
{"eq": ["headers.Content-Type", "application/json"]},
{"eq": ["content.success", true]},
{"eq": ["content.msg", "user created successfully."]}
]
}
]
},
{...} # another testcase
]
```
传入测试用例结构体时支持传入单个结构体dict或者多个结构体list of dict
```python
# 运行单个结构体
runner.run(testcase)
# 运行多个结构体
runner.run([testcase1, testcase2])
```
### 加载 `debugtalk.py` && `.env`
通过传入测试用例文件路径运行测试用例时,HttpRunner 会自动以指定测试用例文件路径为起点,向上搜索 `debugtalk.py` 文件,并将 `debugtalk.py` 文件所在的文件目录作为当前工作目录PWD
同时HttpRunner 会在当前工作目录PWD搜索 `.env` 文件,以及 `api``testcases` 文件夹,并自动进行加载。
最终加载得到的存储结构如下所示:
```json
{
"env": {},
"debugtalk": {
"variables": {
"SECRET_KEY": "DebugTalk"
},
"functions": {
"gen_random_string": <function gen_random_string at 0x108596268>,
"get_sign": <function get_sign at 0x1085962f0>,
"get_user_id": <function get_user_id at 0x108596378>,
"get_account": <function get_account at 0x108596400>,
"get_os_platform": <function get_os_platform at 0x108596488>
}
},
"def-api": {},
"def-testcase": {}
}
```
其中,`env` 对应的是 `.env` 文件中的环境变量,`debugtalk` 对应的是 `debugtalk.py` 文件中定义的变量和函数,`def-api` 对应的是 `api` 文件夹下定义的接口描述,`def-testcase` 对应的是 `testcases` 文件夹下定义的测试用例。
通过传入标准的测试用例结构体执行测试时,传入的数据应包含所有信息,包括 `debugtalk.py``.env`、依赖的 api 和 测试用例等;因此也无需再使用 `dot_env_path``mapping` 参数,所有信息都要通过 `refs` 传入。
## 返回详细测试结果数据
运行完成后,通过 `summary` 属性可获取详尽的运行结果数据。
```python
# get result summary
summary = runner.summary
```
其数据结构为:
```json
{
"success": true,
"stat": {
"testsRun": 2,
"failures": 0,
"errors": 0,
"skipped": 0,
"expectedFailures": 0,
"unexpectedSuccesses": 0,
"successes": 2
},
"time": {
"start_at": 1538449655.944404,
"duration": 0.03181314468383789
},
"platform": {
"httprunner_version": "1.5.14",
"python_version": "CPython 3.6.5+",
"platform": "Darwin-17.6.0-x86_64-i386-64bit"
},
"details": [
{
"success": true,
"name": "testcase description",
"base_url": "",
"stat": {"testsRun": 2, "failures": 0, "errors": 0, "skipped": 0, "expectedFailures": 0, "unexpectedSuccesses": 0, "successes": 2},
"time": {"start_at": 1538449655.944404, "duration": 0.03181314468383789},
"records": [
{
"name": "/api/get-token",
"status": "success",
"attachment": "",
"meta_data": {
"request": {
"url": "http://127.0.0.1:5000/api/get-token",
"method": "POST",
"headers": {"User-Agent": "python-requests/2.18.4", "Accept-Encoding": "gzip, deflate", "Accept": "*/*", "Connection": "keep-alive", "Content-Type": "application/json", "app_version": "2.8.6", "device_sn": "FwgRiO7CNA50DSU", "os_platform": "ios", "user_agent": "iOS/10.3", "Content-Length": "52"},
"start_timestamp": 1538449655.944801,
"json": {"sign": "9c0c7e51c91ae963c833a4ccbab8d683c4a90c98"},
"body": b'{"sign": "9c0c7e51c91ae963c833a4ccbab8d683c4a90c98"}'
},
"response": {
"status_code": 200,
"headers": {"Content-Type": "application/json", "Content-Length": "46", "Server": "Werkzeug/0.14.1 Python/3.6.5+", "Date": "Tue, 02 Oct 2018 03:07:35 GMT"},
"content_size": 46,
"response_time_ms": 12.87,
"elapsed_ms": 6.955,
"encoding": null,
"content": b'{"success": true, "token": "CcQ7dBjZZbjIXRkG"}',
"content_type": "application/json",
"ok": true,
"url": "http://127.0.0.1:5000/api/get-token",
"reason": "OK",
"cookies": {},
"text": '{"success": true, "token": "CcQ7dBjZZbjIXRkG"}',
"json": {"success": true, "token": "CcQ7dBjZZbjIXRkG"}
},
"validators": [
{"check": "status_code", "expect": 200, "comparator": "eq", "check_value": 200, "check_result": "pass"},
{"check": "headers.Content-Type", "expect": "application/json", "comparator": "eq", "check_value": "application/json", "check_result": "pass"},
{"check": "content.success", "expect": true, "comparator": "eq", "check_value": true, "check_result": "pass"}
]
}
},
{
"name": "/api/users/1000",
"status": "success",
"attachment": "",
"meta_data": {
"request": {
"url": "http://127.0.0.1:5000/api/users/1000",
"method": "POST",
"headers": {"User-Agent": "python-requests/2.18.4", "Accept-Encoding": "gzip, deflate", "Accept": "*/*", "Connection": "keep-alive", "Content-Type": "application/json", "device_sn": "FwgRiO7CNA50DSU", "token": "CcQ7dBjZZbjIXRkG", "Content-Length": "39"},
"start_timestamp": 1538449655.958944,
"json": {"name": "user1", "password": "123456"},
"body": b'{"name": "user1", "password": "123456"}'
},
"response": {
"status_code": 201,
"headers": {"Content-Type": "application/json", "Content-Length": "54", "Server": "Werkzeug/0.14.1 Python/3.6.5+", "Date": "Tue, 02 Oct 2018 03:07:35 GMT"},
"content_size": 54,
"response_time_ms": 3.34,
"elapsed_ms": 2.16,
"encoding": null,
"content": b'{"success": true, "msg": "user created successfully."}',
"content_type": "application/json",
"ok": true,
"url": "http://127.0.0.1:5000/api/users/1000",
"reason": "CREATED",
"cookies": {},
"text": '{"success": true, "msg": "user created successfully."}',
"json": {"success": true, "msg": "user created successfully."}
},
"validators": [
{"check": "status_code", "expect": 201, "comparator": "eq", "check_value": 201, "check_result": "pass"},
{"check": "headers.Content-Type", "expect": "application/json", "comparator": "eq", "check_value": "application/json", "check_result": "pass"},
{"check": "content.success", "expect": true, "comparator": "eq", "check_value": true, "check_result": "pass"},
{"check": "content.msg", "expect": "user created successfully.", "comparator": "eq", "check_value": "user created successfully.", "check_result": "pass"}
]
}
}
],
"in_out": {
"in": {"SECRET_KEY": "DebugTalk"},
"out": {"token": "CcQ7dBjZZbjIXRkG"}
}
}
]
}
```
## 生成 HTML 测试报告
如需生成 HTML 测试报告,可调用 `gen_html_report` 方法。
```python
# generate html report
runner.gen_html_report(
html_report_name="demo",
html_report_template="/path/to/custom_report_template"
)
# => reports/demo/demo-1532078874.html
```
关于测试报告的详细内容,请查看[测试报告](/run-tests/report/)部分。
[TextTestRunner]: https://docs.python.org/3.6/library/unittest.html#unittest.TextTestRunner