diff --git a/nullable_whennothing_test.go b/nullable_whennothing_test.go
new file mode 100644
index 0000000..7a65182
--- /dev/null
+++ b/nullable_whennothing_test.go
@@ -0,0 +1,139 @@
+package nul_test
+
+import (
+	"testing"
+
+	"sourcecode.social/reiver/go-nul"
+)
+
+func TestNullable_WhenNothing(t *testing.T) {
+
+
+	tests := []struct{
+		Nullable interface{WhenNothing(func())}
+	}{
+		{
+			Nullable: nul.Nothing[string](),
+		},
+
+
+
+		{
+			Nullable: nul.Nothing[int](),
+		},
+		{
+			Nullable: nul.Nothing[int8](),
+		},
+		{
+			Nullable: nul.Nothing[int16](),
+		},
+		{
+			Nullable: nul.Nothing[int32](),
+		},
+		{
+			Nullable: nul.Nothing[int64](),
+		},
+
+
+
+		{
+			Nullable: nul.Nothing[uint](),
+		},
+		{
+			Nullable: nul.Nothing[uint8](),
+		},
+		{
+			Nullable: nul.Nothing[uint16](),
+		},
+		{
+			Nullable: nul.Nothing[uint32](),
+		},
+		{
+			Nullable: nul.Nothing[uint64](),
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		var worked bool = false
+
+		test.Nullable.WhenNothing(func(){
+
+			worked = true
+		})
+
+		if !worked {
+			t.Errorf("For test #%d, the call to the method did not seem work.", testNumber)
+			t.Logf("WORKED: %t", worked)
+			t.Logf("NULLABLE: (%T) %#v", test.Nullable, test.Nullable)
+	//////////////// CONTINUE
+			continue
+		}
+	}
+}
+
+func TestNullable_WhenNothing_something(t *testing.T) {
+
+
+	tests := []struct{
+		Nullable interface{WhenNothing(func())}
+	}{
+		{
+			Nullable: nul.Something[string]("once twice thrice fource"),
+		},
+
+
+
+		{
+			Nullable: nul.Something[int](-1),
+		},
+		{
+			Nullable: nul.Something[int8](-101),
+		},
+		{
+			Nullable: nul.Something[int16](-10101),
+		},
+		{
+			Nullable: nul.Something[int32](-1010101),
+		},
+		{
+			Nullable: nul.Something[int64](-101010101),
+		},
+
+
+
+		{
+			Nullable: nul.Something[uint](1),
+		},
+		{
+			Nullable: nul.Something[uint8](101),
+		},
+		{
+			Nullable: nul.Something[uint16](10101),
+		},
+		{
+			Nullable: nul.Something[uint32](1010101),
+		},
+		{
+			Nullable: nul.Something[uint64](101010101),
+		},
+	}
+
+	for testNumber, test := range tests {
+
+		var worked bool = false
+
+		test.Nullable.WhenNothing(func(){
+
+			worked = true
+		})
+
+		if worked {
+			t.Errorf("For test #%d, the call to the method worked, but it should not have.", testNumber)
+			t.Logf("WORKED: %t", worked)
+			t.Logf("NULLABLE: (%T) %#v", test.Nullable, test.Nullable)
+	//////////////// CONTINUE
+			continue
+		}
+	}
+}