baffling-birthdays: fix flaky test (#2418)

ErikSchierboom · web-flow · commit 9e52b1470998 · 2025-04-23T15:26:57.000+02:00
diff --git a/exercises/practice/baffling-birthdays/.meta/Example.cs b/exercises/practice/baffling-birthdays/.meta/Example.cs
@@ -9,7 +9,10 @@ private static DateOnly RandomBirthdate(int year)
 
     public static DateOnly[] RandomBirthdates(int numberOfBirthdays)
     {
-        var year = Random.Shared.Next(1900, DateTime.Now.Year + 1);
+        var year = Random.Shared.Next(1900, DateTime.Now.Year);
+        if (DateTime.IsLeapYear(year))
+            year -= 1;
+
         return Enumerable.Range(0, numberOfBirthdays).Select(_ => RandomBirthdate(year)).ToArray();
     }
 

Original file line number	Diff line number	Diff line change
`@@ -9,7 +9,10 @@ private static DateOnly RandomBirthdate(int year)`
`9`	`9`
`10`	`10`	`public static DateOnly[] RandomBirthdates(int numberOfBirthdays)`
`11`	`11`	`{`
`12`		`- var year = Random.Shared.Next(1900, DateTime.Now.Year + 1);`
	`12`	`+ var year = Random.Shared.Next(1900, DateTime.Now.Year);`
	`13`	`+ if (DateTime.IsLeapYear(year))`
	`14`	`+ year -= 1;`
	`15`	`+`
`13`	`16`	`return Enumerable.Range(0, numberOfBirthdays).Select(_ => RandomBirthdate(year)).ToArray();`
`14`	`17`	`}`
`15`	`18`