Develop Reference

Unable to open App Store from app programmatically

I had been trying to open/navigate App Store from my application when there is a version upgrade.
For that I have written customrender which works perfectly fine for android. But it's not working for iOS. Following is the code written for iOS customrenderer. I attached the screenshot of the code in an attachment.
public class OpenAppStore : UIViewController, ISKStoreProductViewControllerDelegate, IOpenStore
{
public void OpenStore()
{
bool isSimulator = Runtime.Arch == Arch.SIMULATOR;
if (!isSimulator)
{
var storeViewController = new SKStoreProductViewController();
storeViewController.Delegate = this;
var id = SKStoreProductParameterKey.ITunesItemIdentifier;
var productDictionaryKeys = new NSDictionary("SKStoreProductParameterITunesItemIdentifier", 1389696261);
var parameters = new StoreProductParameters(productDictionaryKeys);
storeViewController.LoadProduct(parameters, (bool loaded, NSError error) =>
{
if ((error == null) && loaded)
{
this.PresentViewController(storeViewController, true, () =>
{
Console.WriteLine("SKStoreProductViewController Completed");
});
}
if (error != null)
{
throw new NSErrorException(error);
}
});
}
else
{
var itunesLink = new NSUrl("https://itunes.apple.com/us/genre/ios/id36?mt=8");
UIApplication.SharedApplication.OpenUrl(itunesLink, new NSDictionary() { }, null);
}
}
}
Problem : It doesn't throw any error. PresentViewController is called but it doesn't navigate/open my app in the App Store.
Thank you

Firstly, you don't need a custom renderer for this. You should inject a simple helper class that will open the appropriate app store for each platform you support.
Secondly, the url you are using for the iOS App Store looks to be incorrect. Use something like:
var url = new NSUrl($"https://itunes.apple.com/us/app/apple-store/{myAppId}?mt=8");
The app store URL used above is from the Apple docs. You can then open that url.

How to run WebServices in a unit test

I created a function that verifies some rules. The function is supposed to return a bool whenever an element of a list matches an element of another list.
Here is the relevant code of the Rule Class
public override TestResult Execute()
{
Instrument ins = (Items.Length > 0) ? Items[0] as Instrument : null;
string errorInfo;
if (ins == null)
{
Result.Message = "Unable to perform test";
Result.Status = ResultStatus.Error;
return Result;
}
if (MPICSupportDB(ins))
{
Result.Message = "DB not supported by MPIC";
Result.Status = ResultStatus.Yellow;
}
else
{
Result.Status = ResultStatus.Green;
}
return Result;
}
private bool MPICSupportDB(Instrument ins)
{
IServiceProviderFactory serviceFactory = new WebServiceProviderFactory();
IInterfaceAssignmentService wService = serviceFactory.CreateInterfaceAssignmentService();
InterfaceAssignment wAssignments = wService.LoadAssignmentGroup("R4");
return ins.Connections.OfType<InterfaceConnection>()
.Where(conn => conn.Card.IsDB)
.Any(conn => wAssignments.PartMasters
.Any(partNumber => (conn.CardPartNumber == partNumber.PartNumber)));
}
I am trying to test the function MPICSupportDB in a unit test. So far I have started creating my unit test (below), but now I'm lost and I have no idea what to do.
[TestMethod]
public void TestForcompatibleDB()
{
var ins = new Instrument();
var serviceFactoryMock = new Mock<IServiceProviderFactory>();
var wserviceTest = new Mock<IInterfaceAssignmentService>();
var wassagnementTest = new Mock<InterfaceAssignment>();
// adding an MPIC card
ins.Connections.Add(AddCard(CardType.MPIC, "MA505400612268", "CARD1", 0, ins));
// adding an MPIC daughterboard
ins.Connections.Add(AddCard(CardType.GPIM_DB, "MA335022012268", "DB1", 1, ins));
var rule = new Rule026(RuleApplicability.Test, new object[] { ins });
var result = rule.Execute();
Assert.IsNotNull(result);
Assert.AreEqual(ResultStatus.Green, result.Status);
}
The problem is that classes like Webservice and factoryService cannot be run directly in a unit test.
Can someone explain to me how to properly mock these object and make my test run?

You need to provide the IServiceProviderFactory to your Rule026 class, rather than constructing it within the class. This will allow you to use your Mocks that you're creating. The most common approach would be through constructor injection. You haven't provided the Constructor for your Rule class, but if you modify it to something like this:
public Rule026(/*otherArgs*/, IServiceProviderFactory scpFactory = null) {
if(null == scpFactory)
scpFactory = new ServiceProviderFactory();
}
_serviceProviderFactory = scpFactory;
}
Then you will be able to inject the factory from your tests, whilst not having to update all of the code currently constructing Rules. Moving to an IOC container to provide the dependencies, or removing the default and forcing the clients to create the factory in order to able to instantiate the Rule may be preferable, depending on your situation.
Once you can pass in your mocks, you just need to setup a return chain to allow the mocks to return each other. Something like:
var serviceFactoryMock = new Mock<IServiceProviderFactory>();
var wserviceTest = new Mock<IInterfaceAssignmentService>();
var wassagnementTest = new Mock<InterfaceAssignment>();
serviceFactoryMock.Setup(x=>x.CreateInterfaceAssignmentService())
.Returns(wserviceTest.Object);
wserviceTest.Setup(x=>x.CreateInterfaceAssignmentService())
.Returns(wassagnementTest.Object);
wassagnementTest.Setup(x=>x.LoadAssignmentGroup(It.IsAny<string>()))
.Returns(cannedInterfaceAssignmentResponse);
And then supply the mock when constructing your object:
var rule = new Rule026(RuleApplicability.Test,
new object[] { ins },
serviceFactoryMock.Object);
You may also want to add verification etc to your mocks, depending on what you're trying to test and your particular style of testing.

Rhino Mocks testing file system io

I have an application that takes a dictionary of files (file type, and list of file names) and copies the files from the original directory into another location.
I've already got the basic code for the copy process, but I need to do some unit tests so it is as robust as possible.
I have wrapper class that I am using so I can test that the System.IO methods are called as I expect, but I am having some difficulty figuring out how to form the tests as there are foreach and switch statements in the code.
Sample code below:
private IFileSystemIO _f;
public CopyFilesToDestination(IFileSystemIO f){
_f = f;
}
public void Cpy_Files(Dictionary<string, List<string>> files)
{
// get a list of the file types in the directory
var listOfFileTypes = new List<string>(files.Keys);
foreach (var fileType in listOfFileTypes){
var fileList = files[fileType].ToList();
foreach (var file in fileList){
switch(fileType){
case ".txt":
_f.Copy(file, #"c:\destination\text");
break;
case ".dat":
_.Copy(file, #"c:\destination\data");
break;
}
}
}
}
To test the above I had thought I would use a mock dictionary object, set up with a list of file types and paths:
public virtual Dictionary<string, List<string>> FakeFiles(){
return fakeDictionary = new Dictionary<string, List<string>>(){
{".txt", new List<string>(){
"c:\test\file1.txt",
"c:\test\file2.txt"
}
},
{".dat", new List<string>(){
"c:\test\file1.dat",
"c:\test\file2.dat"
}
};
}
}
The first test I came up with looks like this:
[Test]
public void Should_Copy_Text_Files(){
var dictionary = new FakeDictionary().FakeFiles();
var mockObject = MockRepository.GenerateMock<IFileSystemIO>();
var systemUnderTest = new CopyFileToDestination(mockObject);
systemUnderTest.Cpy_Files(dictionary);
// I think this means "test the operation, don't check the values in the arguments" but I also think I'm wrong
mockObject.AssertWasCalled(f => f.Copy("something", "something"), o => o.IgnoreArguments());
}
My first problem is: How do I test for a specific file type, such as ".txt"?
Then how do I test the loops? I know with the mocked dictionary that I only have two items, do I leverage this to form the test? How?
I think I may be close to a solution, but I am running out of time/patience hunting it down. Any help is greatly appreciated.
Thanks
Jim

I tried using Roberts solution, but as I stated, I have too many different file types to set up each test case individually. The next thing I tried was setting up a TestCaseSource, but every time I ran the test for that it marked the test as ignored:
[Test, TestCaseSource(typeof(FakeDictionary), "TestFiles")]
public void Cpy_Files_ShouldCopyAllFilesInDictionary(string extension, string fielName) {
// Arrange
var mockObject = MockRepository.GenerateMock<IFileSystemIO>();
var systemUnderTest = new CopyFileToDestination(mockObject);
// Act
systemUnderTest.Cpy_Files(dictionary);
// Assert
mockObject.AssertWasCalled(f => f.Copy(extension, fileName));
}
The data source is below:
public static Dictionary<string, string> TestFiles{
get
{
return new Dictionary<string, string>()
{
{".txt",
"C:\\test\\test1.txt"},
{".txt",
"c:\\test\\test2.txt"}
};
}
}
What I finally worked out uses the times to repeat option in Rhino and is really pretty simple:
[Test]
public void Cpy_Files_ShouldCopyAllFilesInDictionary(){
// Arrange
var mockObject = MockRepository.GenerateMock<IFileSystemIO>();
var systemUnderTest = new CopyFileToDestination(mockObject);
// Act
systemUnderTest.Cpy_Files(dictionary);
// Assert
// I know how many objects are in my fake dictionary so I set the times to repeat as a const
const int timesToRepeat = 2;
// now I just set the values below. I am not testing file names so the test will ignore arguments
mockObject.AssertWasCalled(f => f.Copy("",""), options => options.Repeat.Times(timesToRepeat).IgnoreArguments());
}
I hope this helps someone else with a similar problem.

I would try making use of the TestCase attribute:
[TestCase(".txt", "c:\test\file1.txt")]
[TestCase(".txt", "c:\test\file2.txt")]
[TestCase(".dat", "c:\test\file1.dat")]
[TestCase(".dat", "c:\test\file2.dat")]
public void Should_Copy_Text_Files(string extension, string fileName){
var dictionary = new FakeDictionary().FakeFiles();
var mockObject = MockRepository.GenerateMock<IFileSystemIO>();
var systemUnderTest = new CopyFileToDestination(mockObject);
systemUnderTest.Cpy_Files(dictionary);
mockObject.AssertWasCalled(f => f.Copy(extension, fileName));
}
This will run the test separately for each TestCase attribute, passing the parameters it contains into the test method. That way you can test that each item in your dictionary was "copied" without using multiple asserts in the same test.

Get current ClickOnce's application publisher name?

Is it possible to read the publisher name of the currently running ClickOnce application (the one you set at Project Properties -> Publish -> Options -> Publisher name in Visual Studio)?
The reason why I need it is to run another instance of the currently running application as described in this article and pass parameters to it.
Of course I do know my application's publisher name, but if I hard code it and later on I decide to change my publisher's name I will most likely forget to update this piece of code.

Here is another option. Note that it will only get the publisher name for the currently running application, which is all I need.
I'm not sure if this is the safest way to parse the XML.
public static string GetPublisher()
{
XDocument xDocument;
using (MemoryStream memoryStream = new MemoryStream(AppDomain.CurrentDomain.ActivationContext.DeploymentManifestBytes))
using (XmlTextReader xmlTextReader = new XmlTextReader(memoryStream))
{
xDocument = XDocument.Load(xmlTextReader);
}
var description = xDocument.Root.Elements().Where(e => e.Name.LocalName == "description").First();
var publisher = description.Attributes().Where(a => a.Name.LocalName == "publisher").First();
return publisher.Value;
}

You would think this would be trivial, but I don't see anything in the framework that gives you this info.
If you want a hack, you can get the publisher from the registry.
Disclaimer - Code is ugly and untested...
...
var publisher = GetPublisher("My App Name");
...
public static string GetPublisher(string application)
{
using (var key = Registry.CurrentUser.OpenSubKey(#"Software\Microsoft\Windows\CurrentVersion\Uninstall"))
{
var appKey = key.GetSubKeyNames().FirstOrDefault(x => GetValue(key, x, "DisplayName") == application);
if (appKey == null) { return null; }
return GetValue(key, appKey, "Publisher");
}
}
private static string GetValue(RegistryKey key, string app, string value)
{
using (var subKey = key.OpenSubKey(app))
{
if (!subKey.GetValueNames().Contains(value)) { return null; }
return subKey.GetValue(value).ToString();
}
}
If you find a better solution, please follow-up.

I dont know about ClickOnce, but normally, you can read the assembly-info using the System.Reflection framework:
public string AssemblyCompany
{
get
{
object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyCompanyAttribute), false);
if (attributes.Length == 0)
{
return "";
}
return ((AssemblyCompanyAttribute)attributes[0]).Company;
}
}
Unfortunately, theres no "publisher" custom-attribute, just throwing this out as a possible work-around

Is it possible to use fluent migrator in application_start?

I'm using fluent migrator to manage my database migrations, but what I'd like to do is have the migrations run at app start. The closest I have managed is this:
public static void MigrateToLatest(string connectionString)
{
using (var announcer = new TextWriterAnnouncer(Console.Out)
{
ShowElapsedTime = true,
ShowSql = true
})
{
var assembly = typeof(Runner).Assembly.GetName().Name;
var migrationContext = new RunnerContext(announcer)
{
Connection = connectionString,
Database = "SqlServer2008",
Target = assembly
};
var executor = new TaskExecutor(migrationContext);
executor.Execute();
}
}
I'm sure I had this working, but I've not looked at it for sometime (hobby project) and it's now throwing null reference exceptions when it gets to the Execute line. Sadly there are no docs for this and I've been banging my head on it for ages.
Has anyone managed to get this kind of thing working with FluentMigrator?

PM> Install-Package FluentMigrator.Tools
Manually add a reference to:
packages\FluentMigrator.Tools.1.6.1\tools\AnyCPU\40\FluentMigrator.Runner.dll
Note that the folder name will vary on version number, this illustration uses the current 1.6.1 release. If you need the .NET 3.5 runner use the \35\ directory.
public static class Runner
{
public class MigrationOptions : IMigrationProcessorOptions
{
public bool PreviewOnly { get; set; }
public string ProviderSwitches { get; set; }
public int Timeout { get; set; }
}
public static void MigrateToLatest(string connectionString)
{
// var announcer = new NullAnnouncer();
var announcer = new TextWriterAnnouncer(s => System.Diagnostics.Debug.WriteLine(s));
var assembly = Assembly.GetExecutingAssembly();
var migrationContext = new RunnerContext(announcer)
{
Namespace = "MyApp.Sql.Migrations"
};
var options = new MigrationOptions { PreviewOnly=false, Timeout=60 };
var factory =
new FluentMigrator.Runner.Processors.SqlServer.SqlServer2008ProcessorFactory();
using (var processor = factory.Create(connectionString, announcer, options))
{
var runner = new MigrationRunner(assembly, migrationContext, processor);
runner.MigrateUp(true);
}
}
}
Note the SqlServer2008ProcessorFactory this is configurable dependent upon your database, there is support for: 2000, 2005, 2008, 2012, and 2014.

I have actually accomplished running migrations in the application_start however it is hard to tell from that code what could be wrong... Since it is open source I would just grab the code and pull it into your solution and build it to find out what the Execute method is complaining about. I found that the source code for Fluent Migrator is organized pretty well.
One thing that you might have to be concerned about if this is a web app is making sure that no one uses the database while you are migrating. I used a strategy of establishing a connection, setting the database to single user mode, running the migrations, setting the database to multi user mode, then closing the connection. This also handles the scenario of a load balanced web application on multiple servers so 2 servers don't try to run migrations against the same database.