#28: Synergy.Contracts: Extracted dedicated test classes for DateTime…

… failures.

Contracts/Synergy.Contracts.Test/Failures/Dates/Fail.IfDateEmpty.cs

@@ -0,0 +1,45 @@
+using System;
+using Xunit;
+
+namespace Synergy.Contracts.Test.Failures.Dates;
+
+public class IfDateEmptyTest
+{
+    [Fact]
+    public void IfDateEmptyWithName()
+    {
+        // ARRANGE
+        DateTime minDate = DateTime.MinValue;
+
+        // ACT
+        var exception = Assert.Throws<DesignByContractViolationException>(
+            () => Fail.IfEmpty(minDate, nameof(minDate))
+        );
+
+        // ASSERT
+        Assert.Equal("'minDate' is empty = 01/01/0001 00:00:00", exception.Message);
+    }
+
+    [Fact]
+    public void IfDateEmptyWithCallerArgumentExpression()
+    {
+        // ARRANGE
+        DateTime minDate = DateTime.MinValue;
+
+        // ACT
+        var exception = Assert.Throws<DesignByContractViolationException>(
+            () => Fail.IfEmpty(minDate)
+        );
+
+        // ASSERT
+        Assert.Equal("'minDate' is empty = 01/01/0001 00:00:00", exception.Message);
+    }
+
+    [Fact]
+    public void IfDateEmptySuccess()
+    {
+        // ACT
+        Fail.IfEmpty(DateTime.Today, nameof(DateTime.Today));
+        Fail.IfEmpty(DateTime.Today);
+    }
+}

Contracts/Synergy.Contracts.Test/Failures/Dates/var.FailIfEmpty.cs

@@ -0,0 +1,48 @@
+using System;
+using Xunit;
+
+namespace Synergy.Contracts.Test.Failures.Dates;
+
+public class FailIfEmptyTest
+{
+    [Fact]
+    public void FailIfDateEmpty()
+    {
+        // ARRANGE
+        DateTime minDate = DateTime.MinValue;
+
+        // ACT
+        var exception = Assert.Throws<DesignByContractViolationException>(
+            () => minDate.FailIfEmpty(nameof(minDate))
+        );
+
+        // ASSERT
+        Assert.Equal("'minDate' is empty = 01/01/0001 00:00:00", exception.Message);
+    }
+
+    [Fact]
+    public void FailIfDateEmptyCallerArgumentExpression()
+    {
+        // ARRANGE
+        DateTime minDate = DateTime.MinValue;
+
+        // ACT
+        var exception = Assert.Throws<DesignByContractViolationException>(
+            () => minDate.FailIfEmpty()
+        );
+
+        // ASSERT
+        Assert.Equal("'minDate' is empty = 01/01/0001 00:00:00", exception.Message);
+    }
+
+    [Fact]
+    public void FailIfDateEmptySuccess()
+    {
+        // ACT
+        // ReSharper disable once UnusedVariable
+        var date1 = DateTime.Today.FailIfEmpty(nameof(DateTime.Today));
+        // ReSharper disable once UnusedVariable
+        var date2 = DateTime.Today.FailIfEmpty();
+    }
+
+}

Contracts/Synergy.Contracts.Test/Failures/Dates/var.FailIfNotDateTest.cs

@@ -5,7 +5,6 @@ namespace Synergy.Contracts.Test.Failures.Dates;
 
 public class FailIfNotDateTest
 {
-
     [Theory]
     [MemberData(nameof(DateTimeTestData.GetDatesWithTime), MemberType = typeof(DateTimeTestData))]
     public void FailIfNotDate(DateTime dateTime)
@@ -44,5 +43,4 @@ public void FailIfNotDateSuccess(DateTime date)
         // ASSERT
         Assert.Equal(date, returned);
     }
-
 }