在 Robot Framework 中实例化 C# 对象

Question

我希望使用 Robot Framework 来测试 .NET 应用程序，并且我正在努力了解 Robot Framework 如何实例化 C# 对象以用于测试。

我正在玩的 C# 应用程序非常简单：

SystemUnderTest solution
|_ DataAccess project (uses Entity Framework to connect to database)
|  |_ SchoolContext class
|
|_ Models project
   |_ Student class
|
|_ SchoolGrades project (class library)
   |_ SchoolRoll class
      |_ AddStudent(Student) method

我想从 Robot Framework 执行 AddStudent 方法，传入一个应该保存到数据库的 Student 对象。

我在 Python 中编写了一个测试库，它使用 Python for .NET (pythonnet) 调用 .NET 应用程序：

import clr
import sys

class SchoolGradesLibrary (object):

    def __init__(self, application_path, connection_string):

        self._application_path = application_path
        sys.path.append(application_path)

        # Need application directory on sys path before we can add references to the DLLs.
        clr.AddReference("SchoolGrades")
        clr.AddReference("DataAccess")
        clr.AddReference("Models")

        from SchoolGrades import SchoolRoll
        from DataAccess import SchoolContext
        from Models import Student

        context = SchoolContext(connection_string)
        self._schoolRoll = SchoolRoll(context)

    def add_student(self, student):

        self._schoolRoll.AddStudent(student)

从 Python 调用它有效：

from SchoolGradesLibrary import SchoolGradesLibrary
import clr

application_path = r"C:\...\SchoolGrades\bin\Debug"
connection_string = r"Data Source=...;Initial Catalog=...;Integrated Security=True"

schoolLib = SchoolGradesLibrary(application_path, connection_string)

# Have to wait to add reference until after initializing SchoolGradesLibrary, 
# as that adds the application directory to sys path.
clr.AddReference("Models")
from Models import Student

student = Student()
student.StudentName = "Python Student"
schoolLib.add_student(student)

我有点不知道如何从 Robot Framework 做同样的事情。这是我到目前为止得到的：

*** Variables ***
${APPLICATION_PATH} =    C:\...\SchoolGrades\bin\Debug
${CONNECTION_STRING} =   Data Source=...;Initial Catalog=...;Integrated Security=True

*** Settings ***
Library    SchoolGradesLibrary    ${APPLICATION_PATH}    ${CONNECTION_STRING}

*** Test Cases ***
Add Student To Database
    ${student} =           Student
    ${student.StudentName} =    RF Student
    Add Student            ${student}

当我运行它失败并显示错误消息：No keyword with name 'Student' found.

如何在 Robot Framework 中创建 Student 对象，以传递给 Add Student 关键字？测试还有其他明显的问题吗？

C#应用程序使用.NET 4.5.1编写，Python版本为3.5，Robot Framework版本为3.0。

Answer 1

您可能无法在没有辅助实用程序的情况下直接在机器人中实例化 Student，因为 Student 是 class 而不是关键字。

最简单的解决方案是在创建学生的 SchoolGradesLibrary 中创建关键字：

...
import clr
clr.AddReference("Models")
from Models import Student
...

class SchoolGradesLibrary (object):
    ...
    def create_student(name=None):
        student = Student()
        if name is not None:
            student.StudentName = name
        return student
    ...

然后您可以像普通关键字一样在测试用例中使用它。

${student}=    create student    Inigo Montoya

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