✅ Implement UTs on Turn class

Sources/Tests/Model_UTs/TurnTest.cs

@@ -9,33 +9,74 @@ namespace Tests.Model_UTs
         [Fact]
         public void TestCreateWithSpecifiedTimeNotUTCThenValid()
         {
+            // Arrange
+            DateTime dateTime = new(year: 2018, month: 06, day: 15, hour: 16, minute: 30, second: 0, kind: DateTimeKind.Local);
+            Player player = new("Alice");
+            Assert.NotEqual(DateTimeKind.Utc, dateTime.Kind);
+
+            // Act
+            Turn turn = Turn.CreateWithSpecifiedTime(dateTime, player);
 
+            // Assert
+            Assert.Equal(DateTimeKind.Utc, turn.when.Kind);
+            Assert.Equal(dateTime.ToUniversalTime(), turn.when);
         }
 
         [Fact]
         public void TestCreateWithSpecifiedTimeUTCThenValid()
         {
+            // Arrange
+            DateTime dateTime = new(year: 2018, month: 06, day: 15, hour: 16, minute: 30, second: 0, kind: DateTimeKind.Utc);
+            Player player = new("Bobby");
+            Assert.Equal(DateTimeKind.Utc, dateTime.Kind);
+
+            // Act
+            Turn turn = Turn.CreateWithSpecifiedTime(dateTime, player);
 
+            // Assert
+            Assert.Equal(DateTimeKind.Utc, turn.when.Kind);
+            Assert.Equal(dateTime.ToUniversalTime(), turn.when);
         }
 
         [Fact]
         public void TestCreateWithSpecifiedTimeNullPlayerThenException()
         {
+            // Arrange
+            DateTime dateTime = new(year: 2018, month: 06, day: 15, hour: 16, minute: 30, second: 0, kind: DateTimeKind.Utc);
+
+            // Act
+            void action() => Turn.CreateWithSpecifiedTime(dateTime, null);
 
+            // Assert
+            Assert.Throws<ArgumentNullException>(action);
         }
 
         [Fact]
         public void TestCreateWithDefaultTimeThenValid()
         {
-            // check that the date (not the time part) is the same as today
-            // ... would fail tests at 11:59:59pm -- acceptable (?)
+            // Arrange
+            Player player = new("Chloe");
+
+            // Act
+            Turn turn = Turn.CreateWithDefaultTime(player);
 
+            // Assert
+            Assert.Equal(DateTimeKind.Utc, turn.when.Kind);
+            Assert.Equal(DateTime.Now.ToUniversalTime().Date, turn.when.Date);
+            /*** N.B.: might fail between 11:59:59PM and 00:00:00AM ***/
         }
 
         [Fact]
         public void TestCreateWithDefaultTimeNullPlayerThenException()
         {
+            // Arrange
+            Player player = new("Devon");
 
+            // Act
+            static void action() => Turn.CreateWithDefaultTime(null);
+
+            // Assert
+            Assert.Throws<ArgumentNullException>(action);
         }
 
         [Fact]