WinAppDriver tests (#1371)

* added test project
* added FancyZonesSettings tests

src/tests/win-app-driver/README.md

@@ -0,0 +1,82 @@
+# PowerToys Tests
+
+The PowerToys tests are implemented using Appium and use the [Windows Application Driver](https://github.com/microsoft/WinAppDriver) as an Appium compatible server for Windows applications.
+
+## Prerequisites
+  - Install the latest stable version of Windows Application Driver in the test machine: [v1.1 Release](https://github.com/microsoft/WinAppDriver/releases/tag/v1.1)
+  - Install the ".Net desktop development" components in Visual Studio 2019. It should have support for "C#" and ".Net Framework 4.7.2".
+  - Install [PowerToys v0.15.2](https://github.com/microsoft/PowerToys/releases/download/v0.15.2/PowerToysSetup-0.15.2-x64.msix)
+  - Set Windows to "Developer Mode", by selecting `Developer mode` in `Settings > For developers > Use developer features` in Windows 10.
+
+If you have `PowerToys v0.15.2 (MSIX)` installed, it can be launched automatically. Otherwise you should start `PowerToys` before running tests. 
+
+### Preparing the test machine
+  - Start `PowerToys` if it is necessary.
+  - Run the "Windows Application Driver" in Administrator mode in the test machine. By default you can find it in `C:\Program Files (x86)\Windows Application Driver`
+
+  - Notice that notifications or other application windows that are shown above PowerToys settings window or tray can disrupt testing process.
+
+When testing on a remote machine, Firewall exceptions must be added and the IP and port must be passed when starting "Windows Application Driver". Here's how to do it from the [Windows Application Driver FAQ](https://github.com/microsoft/WinAppDriver/wiki/Frequently-Asked-Questions#running-on-a-remote-machine):
+
+#### Running on a Remote Machine
+
+Windows Application Driver can run remotely on any Windows 10 machine with `WinAppDriver.exe` installed and running. This *test machine* can then serve any JSON wire protocol commands coming from the *test runner* remotely through the network. Below are the steps to the one-time setup for the *test machine* to receive inbound requests:
+
+1. On the *test machine* you want to run the test application on, open up **Windows Firewall with Advanced Security**
+   - Select **Inbound Rules** -> **New Rule...**
+   - **Rule Type** -> **Port**
+   - Select **TCP**
+   - Choose specific local port (4723 is WinAppDriver standard)
+   - **Action** -> **Allow the connection**
+   - **Profile** -> select all
+   - **Name** -> optional, choose name for rule (e.g. WinAppDriver remote).
+
+   Below command when run in admin command prompt gives same result
+   ```shell
+   netsh advfirewall firewall add rule name="WinAppDriver remote" dir=in action=allow protocol=TCP localport=4723
+   ```
+
+2. Run `ipconfig.exe` to determine your machine's local IP address
+   > **Note**: Setting `*` as the IP address command line option will cause it to bind to all bound IP addresses on the machine
+3. Run `WinAppDriver.exe 10.X.X.10 4723/wd/hub` as **administrator** with command line arguments as seen above specifying local IP and port
+4. On the *test runner* machine where the runner and scripts are, update the test script to point to the IP of the remote *test machine*
+
+### Starting the tests in the Development Machine
+  - Open `powertoys.sln` in Visual Studio 2017.
+  - Build the `PowerToysTests` project.
+  - Select `Test > Windows > Test Explorer`.
+  - Select `Test > Run > All` tests in the menu bar.
+
+> Once the project is successfully built, you can use the **TestExplorer** to pick and choose the test scenario(s) to run
+
+> If Visual Studio fail to discover and run the test scenarios:
+> 1. Select **Tools** > **Options...** > **Test**
+> 2. Under *Active Solution*, uncheck *For improved performance, only use test adapters in test assembly folder or as specified in runsettings file*
+
+If a remote test machine is being used, the IP of the test machine must be used to replace the `WindowsApplicationDriverUrl` value in [PowerToysSession.cs](PowerToysSession.cs).
+
+### Extra tools and information
+
+For tests creation you will need a tool that enables you select any UI element and view the element's accessibility data. For this purpose you could use  [AccessibilityInsights](https://accessibilityinsights.io/docs/en/windows/overview) or [Inspect](https://docs.microsoft.com/ru-ru/windows/win32/winauto/inspect-objects?redirectedfrom=MSDN).
+
+* `inspect.exe` you can find installed at `C:\Program Files (x86)\Windows Kits\10\bin\<version>\<platform>\inspect.exe`
+* `AccessibilityInsights` you can download [here](https://aka.ms/accessibilityinsights-windows/download)
+
+##### How to use Inspect
+Open Inspect, find element you need to investigate (by clicking on element or finding it in a tree) and in the right part of inspector window you will see info about this element. 
+
+Examples for searching elements with values of `Name`, `AutomationId` and `ControlType`:
+```
+//use FindElementByAccessibilityId with AutomationId value
+session.FindElementByAccessibilityId("40001");
+session.FindElementByAccessibilityId("decrementZones");
+
+session.FindElementByName("PowerToys Settings");
+
+//with XPath you can search elements with more specific information 
+session.FindElementByXPath("//Pane[@Name=\"PowerToys Settings\"]");
+session.FindElementByXPath("//Edit[contains(@Name, \"hotkey\")]");
+session.FindElementByXPath("//Pane[@Name=\"PowerToys Settings\"]/*[@LocalizedControlType=\"toggleswitch\"]");
+```
+
+>One more thing to notice: close helper tools while running tests. Overlapping windows can affect test results.