add country details for Estonia Ethiopia FalklandIslands and Eswatini (#57)

* add estonia

* initialize estonia

* add Ethiopia details

* rename estonia test class

* add ethiopia test class

* add FalklandIslands details

* add FalklandIslands tests

* add Eswatini

* add Eswatini test class

Author: selfmadecode

src/World.Net.UnitTests/Countries/EstoniaTest.cs

@@ -0,0 +1,40 @@
+namespace World.Net.UnitTests.Countries
+{
+    public sealed class EstoniaTest
+    {
+        private const string ESTONIA_NAME = "Estonia";
+        private const int ESTONIA_STATE_COUNT = 15;
+        private const string ESTONIA_OFFICIAL_NAME = "Republic of Estonia";
+        private const string ESTONIA_NATIVE_NAME = "Eesti";
+        private const string ESTONIA_CAPITAL = "Tallinn";
+        private const int ESTONIA_NUMERIC_CODE = 233;
+        private const string ESTONIA_ISO2_CODE = "EE";
+        private const string ESTONIA_ISO3_CODE = "EST";
+        private readonly string[] ESTONIA_CALLING_CODE = ["372"];
+        private static readonly string[] VALID_STATE_TYPES = { "County" };
+
+        [Fact]
+        public void GetCountry_ReturnsCorrectInformation_ForEstonia()
+        {
+            // Arrange
+            CountryIdentifier existingCountryId = CountryIdentifier.Estonia;
+
+            // Act
+            var country = CountryProvider.GetCountry(existingCountryId);
+
+            // Assert
+            Assert.Equal(existingCountryId, country.Id);
+            Assert.Equal(ESTONIA_NAME, country.Name);
+            Assert.NotNull(country.States);
+            Assert.Equal(ESTONIA_STATE_COUNT, country.States.Count());
+            Assert.Equal(ESTONIA_OFFICIAL_NAME, country.OfficialName);
+            Assert.Equal(ESTONIA_NATIVE_NAME, country.NativeName);
+            Assert.Equal(ESTONIA_CAPITAL, country.Capital);
+            Assert.Equal(ESTONIA_NUMERIC_CODE, country.NumericCode);
+            Assert.Equal(ESTONIA_ISO2_CODE, country.ISO2Code);
+            Assert.Equal(ESTONIA_ISO3_CODE, country.ISO3Code);
+            Assert.All(country.States, state => Assert.Contains(state.Type, VALID_STATE_TYPES));
+            Assert.Equal(ESTONIA_CALLING_CODE, country.CallingCode);
+        }
+    }
+}

src/World.Net.UnitTests/Countries/EswatiniTest.cs

@@ -0,0 +1,40 @@
+namespace World.Net.UnitTests.Countries
+{
+    public class EswatiniTest
+    {
+        private const string ESWATINI_NAME = "Eswatini";
+        private const int ESWATINI_STATE_COUNT = 4;
+        private const string ESWATINI_OFFICIAL_NAME = "Kingdom of Eswatini";
+        private const string ESWATINI_NATIVE_NAME = "eSwatini";
+        private const string ESWATINI_CAPITAL = "Mbabane";
+        private const int ESWATINI_NUMERIC_CODE = 748;
+        private const string ESWATINI_ISO2_CODE = "SZ";
+        private const string ESWATINI_ISO3_CODE = "SWZ";
+        private readonly string[] ESWATINI_CALLING_CODE = ["268"];
+        private static readonly string[] VALID_STATE_TYPES = { "Region" };
+
+        [Fact]
+        public void GetCountry_ReturnsCorrectInformation_ForEswatini()
+        {
+            // Arrange
+            CountryIdentifier existingCountryId = CountryIdentifier.Eswatini;
+
+            // Act
+            var country = CountryProvider.GetCountry(existingCountryId);
+
+            // Assert
+            Assert.Equal(existingCountryId, country.Id);
+            Assert.Equal(ESWATINI_NAME, country.Name);
+            Assert.NotNull(country.States);
+            Assert.Equal(ESWATINI_STATE_COUNT, country.States.Count());
+            Assert.Equal(ESWATINI_OFFICIAL_NAME, country.OfficialName);
+            Assert.Equal(ESWATINI_NATIVE_NAME, country.NativeName);
+            Assert.Equal(ESWATINI_CAPITAL, country.Capital);
+            Assert.Equal(ESWATINI_NUMERIC_CODE, country.NumericCode);
+            Assert.Equal(ESWATINI_ISO2_CODE, country.ISO2Code);
+            Assert.Equal(ESWATINI_ISO3_CODE, country.ISO3Code);
+            Assert.All(country.States, state => Assert.Contains(state.Type, VALID_STATE_TYPES));
+            Assert.Equal(ESWATINI_CALLING_CODE, country.CallingCode);
+        }
+    }
+}

src/World.Net.UnitTests/Countries/EthiopiaTest.cs

@@ -0,0 +1,40 @@
+namespace World.Net.UnitTests.Countries
+{
+    public sealed class EthiopiaTest
+    {
+        private const string ETHIOPIA_NAME = "Ethiopia";
+        private const int ETHIOPIA_STATE_COUNT = 12;
+        private const string ETHIOPIA_OFFICIAL_NAME = "Federal Democratic Republic of Ethiopia";
+        private const string ETHIOPIA_NATIVE_NAME = "ኢትዮጵያ";
+        private const string ETHIOPIA_CAPITAL = "Addis Ababa";
+        private const int ETHIOPIA_NUMERIC_CODE = 231;
+        private const string ETHIOPIA_ISO2_CODE = "ET";
+        private const string ETHIOPIA_ISO3_CODE = "ETH";
+        private readonly string[] ETHIOPIA_CALLING_CODE = ["251"];
+        private static readonly string[] VALID_STATE_TYPES = { "Region", "Administration" };
+
+        [Fact]
+        public void GetCountry_ReturnsCorrectInformation_ForEthiopia()
+        {
+            // Arrange
+            CountryIdentifier existingCountryId = CountryIdentifier.Ethiopia;
+
+            // Act
+            var country = CountryProvider.GetCountry(existingCountryId);
+
+            // Assert
+            Assert.Equal(existingCountryId, country.Id);
+            Assert.Equal(ETHIOPIA_NAME, country.Name);
+            Assert.NotNull(country.States);
+            Assert.Equal(ETHIOPIA_STATE_COUNT, country.States.Count());
+            Assert.Equal(ETHIOPIA_OFFICIAL_NAME, country.OfficialName);
+            Assert.Equal(ETHIOPIA_NATIVE_NAME, country.NativeName);
+            Assert.Equal(ETHIOPIA_CAPITAL, country.Capital);
+            Assert.Equal(ETHIOPIA_NUMERIC_CODE, country.NumericCode);
+            Assert.Equal(ETHIOPIA_ISO2_CODE, country.ISO2Code);
+            Assert.Equal(ETHIOPIA_ISO3_CODE, country.ISO3Code);
+            Assert.All(country.States, state => Assert.Contains(state.Type, VALID_STATE_TYPES));
+            Assert.Equal(ETHIOPIA_CALLING_CODE, country.CallingCode);
+        }
+    }
+}

src/World.Net.UnitTests/Countries/FalklandIslandsTest.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace World.Net.UnitTests.Countries
+{
+    public sealed class FalklandIslandsTest
+    {
+        private const string FALKLANDS_NAME = "FalklandIslands";
+        private const string FALKLANDS_OFFICIAL_NAME = "Falkland Islands";
+        private const string FALKLANDS_NATIVE_NAME = "Falkland Islands";
+        private const string FALKLANDS_CAPITAL = "Stanley";
+        private const int FALKLANDS_NUMERIC_CODE = 238;
+        private const string FALKLANDS_ISO2_CODE = "FK";
+        private const string FALKLANDS_ISO3_CODE = "FLK";
+        private readonly string[] FALKLANDS_CALLING_CODE = ["500"];
+        private static readonly string[] VALID_STATE_TYPES = { "Overseas Territory" };
+
+        [Fact]
+        public void GetCountry_ReturnsCorrectInformation_ForFalklandIslands()
+        {
+            // Arrange
+            CountryIdentifier existingCountryId = CountryIdentifier.FalklandIslands;
+
+            // Act
+            var country = CountryProvider.GetCountry(existingCountryId);
+
+            // Assert
+            Assert.Equal(existingCountryId, country.Id);
+            Assert.Equal(FALKLANDS_NAME, country.Name);
+            Assert.NotNull(country.States);
+            Assert.Single(country.States);
+            Assert.Equal(FALKLANDS_OFFICIAL_NAME, country.OfficialName);
+            Assert.Equal(FALKLANDS_NATIVE_NAME, country.NativeName);
+            Assert.Equal(FALKLANDS_CAPITAL, country.Capital);
+            Assert.Equal(FALKLANDS_NUMERIC_CODE, country.NumericCode);
+            Assert.Equal(FALKLANDS_ISO2_CODE, country.ISO2Code);
+            Assert.Equal(FALKLANDS_ISO3_CODE, country.ISO3Code);
+            Assert.All(country.States, state => Assert.Contains(state.Type, VALID_STATE_TYPES));
+            Assert.Equal(FALKLANDS_CALLING_CODE, country.CallingCode);
+        }
+    }
+}

src/World.Net/Countries/Estonia.cs

@@ -0,0 +1,43 @@
+
+namespace World.Net.Countries
+{
+    internal sealed class Estonia : ICountry
+    {
+        public CountryIdentifier Id => CountryIdentifier.Estonia;
+
+        public string Name => nameof(Estonia);
+
+        public string OfficialName => "Republic of Estonia";
+
+        public string NativeName => "Eesti";
+
+        public string Capital => "Tallinn";
+
+        public int NumericCode => 233;
+
+        public string ISO2Code => "EE";
+
+        public string ISO3Code => "EST";
+
+        public string[] CallingCode => ["372"];
+
+        public IEnumerable<State> States =>
+        [
+            new("Harju", "37", "County"),
+            new("Hiiu", "39", "County"),
+            new("Ida-Viru", "44", "County"),
+            new("Jõgeva", "49", "County"),
+            new("Järva", "51", "County"),
+            new("Lääne", "57", "County"),
+            new("Lääne-Viru", "59", "County"),
+            new("Põlva", "65", "County"),
+            new("Pärnu", "67", "County"),
+            new("Rapla", "70", "County"),
+            new("Saare", "74", "County"),
+            new("Tartu", "78", "County"),
+            new("Valga", "82", "County"),
+            new("Viljandi", "84", "County"),
+            new("Võru", "86", "County")
+        ];
+    }
+}

src/World.Net/Countries/Eswatini.cs

@@ -0,0 +1,32 @@
+namespace World.Net.Countries
+{
+    internal sealed class Eswatini : ICountry
+    {
+        public CountryIdentifier Id => CountryIdentifier.Eswatini;
+
+        public string Name => nameof(Eswatini);
+
+        public string OfficialName => "Kingdom of Eswatini";
+
+        public string NativeName => "eSwatini";
+
+        public string Capital => "Mbabane";
+
+        public int NumericCode => 748;
+
+        public string ISO2Code => "SZ";
+
+        public string ISO3Code => "SWZ";
+
+        public string[] CallingCode => ["268"];
+
+        public IEnumerable<State> States =>
+        [
+            new State("Hhohho", "HH", "Region"),
+            new State("Lubombo", "LU", "Region"),
+            new State("Manzini", "MA", "Region"),
+            new State("Shiselweni", "SH", "Region")
+        ];
+    }
+
+}

src/World.Net/Countries/Ethiopia.cs

@@ -0,0 +1,39 @@
+namespace World.Net.Countries
+{
+    internal sealed class Ethiopia : ICountry
+    {
+        public CountryIdentifier Id => CountryIdentifier.Ethiopia;
+
+        public string Name => nameof(Ethiopia);
+
+        public string OfficialName => "Federal Democratic Republic of Ethiopia";
+
+        public string NativeName => "ኢትዮጵያ";
+
+        public string Capital => "Addis Ababa";
+
+        public int NumericCode => 231;
+
+        public string ISO2Code => "ET";
+
+        public string ISO3Code => "ETH";
+
+        public string[] CallingCode => ["251"];
+
+        public IEnumerable<State> States =>
+        [
+            new("Addis Ababa", "AA", "Administration"),
+            new("Afar", "AF", "Region"),
+            new("Amhara", "AM", "Region"),
+            new("Benishangul-Gumuz", "BE", "Region"),
+            new("Dire Dawa", "DD", "Administration"),
+            new("Gambela", "GA", "Region"),
+            new("Harari", "HA", "Region"),
+            new("Oromia", "OR", "Region"),
+            new("Sidama", "SI", "Region"),
+            new("Somali", "SO", "Region"),
+            new("Southern Nations, Nationalities, and Peoples' Region", "SN", "Region"),
+            new("Tigray", "TI", "Region")
+        ];
+    }
+}

src/World.Net/Countries/FalklandIslands.cs

@@ -0,0 +1,29 @@
+namespace World.Net.Countries
+{
+    internal sealed class FalklandIslands : ICountry
+    {
+        public CountryIdentifier Id => CountryIdentifier.FalklandIslands;
+
+        public string Name => nameof(FalklandIslands);
+
+        public string OfficialName => "Falkland Islands";
+
+        public string NativeName => "Falkland Islands";
+
+        public string Capital => "Stanley";
+
+        public int NumericCode => 238;
+
+        public string ISO2Code => "FK";
+
+        public string ISO3Code => "FLK";
+
+        public string[] CallingCode => ["500"];
+
+        public IEnumerable<State> States =>
+        [
+            new("Falkland Islands", "FK", "Overseas Territory")
+        ];
+    }
+
+}

src/World.Net/Helpers/CountryInitializer.cs

@@ -71,6 +71,10 @@ public static Dictionary<CountryIdentifier, ICountry> Initialize()
             { CountryIdentifier.TimorLeste, new TimorLeste() },
             { CountryIdentifier.Ecuador, new Ecuador() },
             { CountryIdentifier.Egypt, new Egypt() },
+            { CountryIdentifier.Estonia, new Estonia() },
+            { CountryIdentifier.Ethiopia, new Ethiopia() },
+            { CountryIdentifier.Eswatini, new Eswatini() },
+            { CountryIdentifier.FalklandIslands, new FalklandIslands() },
             { CountryIdentifier.FaroeIslands, new FaroeIslands() },
             { CountryIdentifier.FijiIslands, new FijiIslands() },
             { CountryIdentifier.Finland, new Finland() },