Add initial support for TestCases

[lesaltzm]

Fix #52

This is early support. I think a mixture of server and tool changes can improve the experience by cleaning up some of these name/displayname/guid/json issues.

Example:

  'a050de8b-caa1-4092-9de2-8bad55f6aa8a' As TestSuite:
    DisplayName: ="Suite"
    Description: =""

    '06c8b692-98f2-49b9-a79d-424d968505c4' As TestCase:
      DisplayName: ="Case"
      Description: =""
      TestStepsMetadata: |-
        ="[{""Description"":""Select 'Button1'"",""Rule"":""Step1"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step2"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step3"",""ScreenId"":""3""},{""Description"":""Select 'Label1'"",""Rule"":""Step4"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step5"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step6"",""ScreenId"":""3""},{""Description"":""Select 'Label1'"",""Rule"":""Step7"",""ScreenId"":""3""}]"
      Step1: =Select('Button1')
      Step2: =Select('Button1')
      Step3: =Select('Button1')
      Step4: =Assert('Label1'.Text = "3", "Value is 3")
      Step5: =Select('Button1')
      Step6: =Select('Button1')
      Step7: =Assert('Label1'.Text= "5", "Value is 5"   /* comment here */)

    'a46b12b7-dd69-41d0-8711-55e982a93a6f' As TestCase:
      DisplayName: ="Case (1)"
      Description: =""
      TestStepsMetadata: |-
        ="[{""Description"":""Select 'Button1'"",""Rule"":""Step1"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step2"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step3"",""ScreenId"":""3""},{""Description"":""Select 'Label1'"",""Rule"":""Step4"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step5"",""ScreenId"":""3""},{""Description"":""Select 'Button1'"",""Rule"":""Step6"",""ScreenId"":""3""},{""Description"":""Select 'Label1'"",""Rule"":""Step7"",""ScreenId"":""3""}]"
      Step1: =Select('Button1')
      Step2: =Select('Button1')
      Step3: =Select('Button1')
      Step4: =Assert('Label1'.Text = "3", "Value is 3")
      Step5: =Select('Button1')
      Step6: =Select('Button1')
      Step7: =Assert('Label1'.Text= "6", "Value is 5"   /* wrong? */)

[lesaltzm]

Example is now out of date, see file added to SrcBaselines/

[carlosfigueira]

In a scenario where we have one test case only with 3 steps, the TestCase template will have 3 behavior properties (Step1, Step2, Step3). If while editing the test offline we add 2 more steps, we need to update the TestCase template to add the additional properties (Step4, Step5).

[lesaltzm]

In a scenario where we have one test case only with 3 steps, the TestCase template will have 3 behavior properties (Step1, Step2, Step3). If while editing the test offline we add 2 more steps, we need to update the TestCase template to add the additional properties (Step4, Step5).

Looks like studio tries to handle it in TestManager, but I think it can be improved slightly. The GetMaxTestStepCount method relies on the # of behavior properties, but we're moving away from serializing the property kind since the template should contain that information. I'll update it to rely on the # of properties named Step[N]

[carlosfigueira]

The changes look good; let me know if you need help testing this E2E (i.e., actually running the tests)