Added overloaded support for array * int

evaluator/evaluator_test.go

@@ -481,6 +481,25 @@ func TestArrayLiterals(t *testing.T) {
 	testIntegerObject(t, result.Elements[2], 6)
 }
 
+func TestArrayDuplication(t *testing.T) {
+	input := "[1] * 3"
+
+	evaluated := testEval(input)
+	result, ok := evaluated.(*object.Array)
+	if !ok {
+		t.Fatalf("object is not Array. got=%T (%+v)", evaluated, evaluated)
+	}
+
+	if len(result.Elements) != 3 {
+		t.Fatalf("array has wrong num of elements. got=%d",
+			len(result.Elements))
+	}
+
+	testIntegerObject(t, result.Elements[0], 1)
+	testIntegerObject(t, result.Elements[1], 1)
+	testIntegerObject(t, result.Elements[2], 1)
+}
+
 func TestArrayIndexExpressions(t *testing.T) {
 	tests := []struct {
 		input    string