用jsonschema和robotframework验证json

Question

有人能帮助我了解如何使用RobotFramework通过JSON-Schema验证json响应吗？

理想情况下，通过http请求外部引用json-schema：示例http://api-bl-uk.northeurope.cloudapp.azure.com/api/v1/crm/schemas/contact

pip install robotframework
pip install robotframework-jsonvalidator
pip install robotframework-jsonschemalibrary
robot .\mytest.robot

Library JsonValidator
Library JSONSchemaLibrary schemas
*** Test Cases ***
  My Test Case:
   Validate Json  service.schema.json  {"foo": "bar"}

当我做测试的时候...

$ robot .\mytest.robot
==============================================================================
Mytest
==============================================================================
My Test Case:                                                         | FAIL |
No keyword with name 'Validate Json' found.
------------------------------------------------------------------------------
Mytest                                                                | FAIL |
1 critical test, 0 passed, 1 failed
1 test total, 0 passed, 1 failed
==============================================================================
Output:  E:\GitLab\customer-api\test\output.xml
Log:     E:\GitLab\customer-api\test\log.html
Report:  E:\GitLab\customer-api\test\report.html

所以我似乎错过了一个相当基本的谜题：

找不到名为“Validate JSON”的关键字

*** Settings ***
Library  JSONSchemaLibrary  schemas

*** Test Cases ***
My Test Case:
    Validate Json  service.json  {"foo": "bar"}

Answer 1

我不确定这是否适用于您正在使用的库，但我正在使用库jsonschema(https://python-jsonschema.readthedocs.io/）。

我提出了两种从文件中使用模式的方法。我会选择第一个。

在virtualenv中，运行PIP install JSONSchema。

*** Settings ***
# For the "Get Binary File" task
Library     OperatingSystem
# For the "validate" task
Library    jsonschema


*** Test Cases ***
Load json schema from file, and validate json
    # Load the file as a string, usually sufficent for most methods, but not validate() below
    ${schema}    Get Binary File    ./mySchema.json
    # Load the string as a binary object, you could then use this like ${schema}[someProperty] if you wanted to
    ${schema}    evaluate    json.loads('''${schema}''')    json
    # Do a simple validation, using the schema, and your json data. Remember ${instance} needs to be a json object, not just some string
    ${instance}    evaluate    json.loads('''{"someField":[1,2,3]}''')    json
    validate    instance=${instance}    schema=${schema}

*** Settings ***
# For the "Get Binary File" task
Library     OperatingSystem
# For the "validate" task
Library    jsonschema


*** Test Cases ***
Load json schema from file, and validate
    # Create a schema
    ${schema}    concat
    ... {
    ...   "type": "object",
    ...   "properties": {"$ref": "file:/absolute/path/to/mySchema.json"}
    ... }
    ${schema}    evaluate    json.loads('''${schema}''')    json
    # Do a simple validation, using the schema, and your json data. Remember ${instance} needs to be a json object, not just some string
    ${instance}    evaluate    json.loads('''{"someField":[1,2,3]}''')    json
    validate    instance=${instance}    schema=${schema}

如果要从外部源获取架构文件，请查看请求库。类似于：

*** Settings ***
Library     RequestsLibrary

*** Test Cases ***
Test case
    Create Session    yourSession    http://localhost
    ${file}    Get Request    yourSession    /filename