USA 2021: Add Juneteenth federal holiday

src/PublicHoliday/Properties/AssemblyInfo.cs

@@ -10,7 +10,7 @@
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Martin Willey")]
 [assembly: AssemblyProduct("Holiday")]
-[assembly: AssemblyCopyright("Copyright © Martin Willey 2020")]
+[assembly: AssemblyCopyright("Copyright © Martin Willey 2021")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("2.4.0.0")]
-[assembly: AssemblyFileVersion("2.4.0.0")]
+[assembly: AssemblyVersion("2.5.0.0")]
+[assembly: AssemblyFileVersion("2.5.0.0")]

src/PublicHoliday/PublicHoliday.csproj

@@ -17,7 +17,8 @@
 2.1.0: South Africa added (thanks @cltw666)
 2.2.0: Japan 2020 error (thanks @overstimulated)
 2.3.0: UK 2022 Queen's Platinum Jubilee
-2.4.0: Scotland, Northern Island holidays (thanks @stuart-lawrence)</PackageReleaseNotes>
+2.4.0: Scotland, Northern Island holidays (thanks @stuart-lawrence)
+2.5.0: US 2021 Juneteenth added</PackageReleaseNotes>
     <PackageProjectUrl>https://github.com/martinjw/Holiday</PackageProjectUrl>
     <PackageLicenseUrl>http://opensource.org/licenses/MIT</PackageLicenseUrl>
     <RepositoryType>git</RepositoryType>
@@ -31,7 +32,7 @@
     <GenerateAssemblyCopyrightAttribute>false</GenerateAssemblyCopyrightAttribute>
     <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
     <GenerateAssemblyFileVersionAttribute>false</GenerateAssemblyFileVersionAttribute>
-    <Version>2.4.0</Version>
+    <Version>2.5.0</Version>
   </PropertyGroup>
   <PropertyGroup>
     <FrameworkPathOverride Condition="'$(TargetFramework)' == 'net35'">C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v3.5\Profile\Client</FrameworkPathOverride>

src/PublicHoliday/USAPublicHoliday.cs

@@ -70,6 +70,18 @@ public static Holiday MemorialDay(int year)
             return new Holiday(hol, hol);
         }
 
+        /// <summary>
+        /// 19th June
+        /// </summary>
+        /// <param name="year">The year.</param>
+        /// <returns></returns>
+        public static Holiday Juneteenth(int year)
+        {
+            var hol = new DateTime(year, 6, 19);
+            var observed = FixWeekend(hol);
+            return new Holiday(hol, observed);
+        }
+
         /// <summary>
         /// Independence Day
         /// </summary>
@@ -153,6 +165,10 @@ public override IList<DateTime> PublicHolidays(int year)
             bHols.Add(MartinLutherKing(year)); // Third Monday in January
             bHols.Add(PresidentsDay(year)); //Third Monday in February
             bHols.Add(MemorialDay(year)); //Last Monday in May
+            if (year >= 2021)
+            {
+                bHols.Add(Juneteenth(year)); //19th June, from 2021
+            }
             bHols.Add(IndependenceDay(year)); //4 July
             bHols.Add(LaborDay(year)); //First Monday in September
             bHols.Add(ColumbusDay(year)); //Second Monday in October
@@ -174,6 +190,10 @@ public override IList<Holiday> PublicHolidaysInformation(int year)
             bHols.Add(MartinLutherKing(year)); // Third Monday in January
             bHols.Add(PresidentsDay(year)); //Third Monday in February
             bHols.Add(MemorialDay(year)); //Last Monday in May
+            if (year >= 2021)
+            {
+                bHols.Add(Juneteenth(year)); //19th June, from 2021
+            }
             bHols.Add(IndependenceDay(year)); //4 July
             bHols.Add(LaborDay(year)); //First Monday in September
             bHols.Add(ColumbusDay(year)); //Second Monday in October
@@ -195,6 +215,10 @@ public override IDictionary<DateTime, string> PublicHolidayNames(int year)
             bHols.Add(MartinLutherKing(year), "Martin Luther King Day"); // Third Monday in January
             bHols.Add(PresidentsDay(year), "President's Day"); //Third Monday in February
             bHols.Add(MemorialDay(year), "Memorial Day"); //Last Monday in May
+            if (year >= 2021)
+            {
+                bHols.Add(Juneteenth(year), "Juneteenth"); //19th June, from 2021
+            }
             bHols.Add(IndependenceDay(year), "Independence Day"); //4 July
             bHols.Add(LaborDay(year), "Labor Day"); //First Monday in September
             bHols.Add(ColumbusDay(year), "Columbus Day"); //Second Monday in October
@@ -230,6 +254,10 @@ public override bool IsPublicHoliday(DateTime dt)
                     if (MemorialDay(year) == date)
                         return true;
                     break;
+                case 6:
+                    if (year >= 2021 && Juneteenth(year) == date)
+                        return true;
+                    break;
                 case 7:
                     if (IndependenceDay(year) == date)
                         return true;

tests/PublicHolidayTests/TestUSPublicHoliday.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using PublicHoliday;
 
@@ -207,6 +208,23 @@ public void TestNextWorkingDay()
             Assert.AreEqual(new DateTime(1999, 11, 26), result);
         }
 
+        [TestMethod]
+        public void TestJuneteenth2021()
+        {
+            var juneteenth = new DateTime(2021, 6, 19);
+            var result = USAPublicHoliday.Juneteenth(2021);
+            Assert.AreEqual(juneteenth, result.HolidayDate);
+
+            var federalHolidays = new USAPublicHoliday().PublicHolidaysInformation(2021);
+            //19 June 2021 is Saturday, so would normally be observed on Friday
+            var june19 = federalHolidays.FirstOrDefault(x => x.HolidayDate == juneteenth);
+            Assert.IsNotNull(june19);
+
+            //Was made a federal holiday in 2021, so it should not appear in 2020 list (although many states and companies observed it)
+            federalHolidays = new USAPublicHoliday().PublicHolidaysInformation(2020);
+            june19 = federalHolidays.FirstOrDefault(x => x.HolidayDate == juneteenth);
+            Assert.IsNull(june19);
+        }
 
         [TestMethod]
         public void TestNextWorkingDayColumbus()