More tests are added.

trend/smma.go

@@ -33,17 +33,14 @@ type Smma[T helper.Number] struct {
 
 // NewSmma function initializes a new SMMA instance with the default parameters.
 func NewSmma[T helper.Number]() *Smma[T] {
-	return &Smma[T]{
-		Period: DefaultSmmaPeriod,
-	}
+	return NewSmmaWithPeriod[T](DefaultSmmaPeriod)
 }
 
 // NewSmmaWithPeriod function initializes a new SMMA instance with the given period.
 func NewSmmaWithPeriod[T helper.Number](period int) *Smma[T] {
-	smma := NewSmma[T]()
-	smma.Period = period
-
-	return smma
+	return &Smma[T]{
+		Period: period,
+	}
 }
 
 // Compute function takes a channel of numbers and computes the SMMA over the specified period.

trend/smma_test.go

@@ -38,3 +38,12 @@ func TestSmma(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+func TestSmmaString(t *testing.T) {
+	expected := "SMMA(10)"
+	actual := trend.NewSmmaWithPeriod[float64](10).String()
+
+	if actual != expected {
+		t.Fatalf("actual %v expected %v", actual, expected)
+	}
+}