test First()

2025-11-04 17:19:45 -10:00 · 2025-11-04 17:19:45 -10:00 · cfbddb3f39
commit cfbddb3f39
parent f5f7691de0
1 changed files with 7 additions and 0 deletions
--- a/list/list_test.go
+++ b/list/list_test.go
@ -71,3 +71,10 @@ func TestRestDecreasesLengthForNonEmptyList(t *testing.T) {
 		assert.Equal(t, myList.Len()-1, myList.Rest().Len())
 	})
 }
+
+func TestFirstIsNilWhenEmpty(t *testing.T) {
+	rapid.Check(t, func(t *rapid.T) {
+		myList := intListGen().Draw(t, "myList")
+		assert.Equal(t, myList.IsEmpty(), myList.First() == nil)
+	})
+}