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SrkToolit.Common

A lot of stuff is described as unit tests. It makes it obvious to see what the code does.

String extensions

AddHtmlLineBreaks

[TestMethod]
public void WorksWithWindowsLines()
{
    string text = "aaa\r\nbbb\r\nccc";
    string expected = "aaa<br />\r\nbbb<br />\r\nccc";
    string actual = text.AddHtmlLineBreaks();
    Assert.AreEqual(expected, actual);
}

Works with \r, \n and \r\n.

ToUpperFirstLetters

[TestMethod]
public void ManyWords()
{
    string input = "hello wORLD";
    string expected = "Hello WORLD";

    string result = input.ToUpperFirstLetters();

    Assert.AreEqual(expected, result);
}

CapitalizeWords

[TestMethod]
public void ManyWords_LeavesOtherCharsAsIs()
{
    string input = "heLLo wORLd";
    string expected = "Hello World";

    string result = input.CapitalizeWords();

    Assert.AreEqual(expected, result);
}

RemoveDiacritics

[TestMethod]
public void French()
{
    string input =    "Là bas se trouvent une çédille et un œuf. L'été fût dur. Par la fenêtre. En grève ex æquo.";
    string expected = "La bas se trouvent une cedille et un oeuf. L'ete fut dur. Par la fenetre. En greve ex aequo.";

    string result = input.RemoveDiacritics();

    Assert.AreEqual(expected, result);
}

RemoveSpaces

[TestMethod]
public void SomeSpaces()
{
    string input = " \t\n\r\u00A0\u2002\u2003\u2004\u2005\u205F";
    string expected = "";

    string result = input.RemoveSpaces();

    Assert.AreEqual(expected, result);
}

MakeUrlFriendly

[TestMethod]
public void Test()
{
    string input = "German uses  the   umlauts    ä,     ö and ü. ";
    string expected = "german-uses-the-umlauts-a-o-and-u";

    string result = input.MakeUrlFriendly(false);

    Assert.AreEqual(expected, result);
}

[TestMethod]
public void PreserveCase()
{
    string input = "German uses  the   umlauts    ä,     ö AND ü. ";
    string expected = "German-uses-the-umlauts-a-o-AND-u";

    string result = input.MakeUrlFriendly(true);

    Assert.AreEqual(expected, result);
}

GetIncrementedString

[TestMethod]
public void Nothing()
{
    string input = "test";
    string expected = "test-1";

    string result = input.GetIncrementedString();

    Assert.AreEqual(expected, result);
}

[TestMethod]
public void After2Goes3()
{
    string input = "test-2";
    string expected = "test-3";

    string result = input.GetIncrementedString();

    Assert.AreEqual(expected, result);
}

You can pass a lambda as uniquenessCheck argument to check against a DB or something else.

many more...

NameValueCollection extensions

This old collection needs a few methods...

.ToDictionary() .AsEnumerable()

DateTime extensions

DateTime.UtcNow.ToPrecision(DateTimePrecision.Month)
DateTime.UtcNow.ToPrecision(DateTimePrecision.Minute)

var date1 = DateTime.UtcNow.ToPrecision(DateTimePrecision.Second)
date1.IsEqualTo(2, DateTimePrecision.Second)

var local = date1.AsLocal(); // changes the Kind to Local (does not convert)
var utc = local.AsUtc();     // changes the Kind to Utc (does not convert)

long unix = utc.ToUnixTime;

Array extensions

var a1 = new int[] { 0, 1, 2, };
var a2 = new int[] { 3, 4, };

var combined = a1.CombineWith(a2);
// 0, 1, 2, 3, 4

var combinedMore = a1.CombineWith(a2, combined, a1);
// 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0, 1, 2

ObservableCollection extensions

.AddRange()
.RemoveAll(x => x.Value == null)

Enum tools

EnumTool.GetDescription // gets a name from a resource dictionary

var desc = EnumTools.GetDescription(value, EnumStrings.ResourceManager);
var desc = EnumTools.GetDescription(value, EnumStrings.ResourceManager, null, "_Desc");

TimeZoneInfo extensions

ConvertToUtc & ConvertFromUtc

Converting DateTime to UTC is a little tricky with DateTime.Kind to handle. Calling a static method is not very friendly.

As I often convert to/from UTC, those 2 methods make it nicer.

// prepare
var date = new DateTime(1234, 5, 6, 7, 8, 9, 123, DateTimeKind.Utc);
var tz = TimeZoneInfo.FindSystemTimeZoneById("Romance Standard Time");

// before
TimeZoneInfo.ConvertTimeFromUtc(dateTime.AsUnspecified(), tz)
// after
var result = tz.ConvertFromUtc(tz, date);

// before
TimeZoneInfo.ConvertTimeToUtc(dateTime.AsUnspecified(), tz)
// after
result = tz.ConvertToUtc(tz, result);

DisposableOnce

Sometimes it is nice to use a using() { } block as an intuitive way to finaly{do-something}.

DisposableOnce allows you to create a disposable object that will call a delegate on dispose.

[TestMethod]
public void DelegateIsCalledOnceDispose()
{
    // prepare
    int disposed = 0;
    var target = new DisposableOnce(() => disposed++);

    // execute
    target.Dispose();

    // verify
    Assert.AreEqual(1, disposed);
}

CultureInfoHelper.GetCountries()

Lists countries from the .NET cultures.

SrkToolkit.IO.RecursiveDelete

Multi-threaded recursive file delete.

SrkToolkit.Common.Validation.EmailAddress

Decomposes and composes an email address (account + tag + domain).

var emailSimple = new EmailAddress("[email protected]");
Assert.AreEqual(email.Account, "someone.nice");
Assert.AreEqual(email.Tag, null);
Assert.AreEqual(email.Domain, "sometest.com");

var emailTag = new EmailAddress("[email protected]");
Assert.AreEqual(email.Account, "someone.nice");
Assert.AreEqual(email.Tag, "my-tag");
Assert.AreEqual(email.Domain, "sometest.com");
Assert.AreEqual(email.Value, "[email protected]");
Assert.AreEqual(email.ValueWithoutTag, "[email protected]");

SrkToolkit.Common.Validation.PhoneNumber

Makes nicer phone numbers

"00123456", "0012 (0) 3456", "+12 34-56", "0012-34-56" => "+123456"