diff --git a/2019/intcode-processor/processor_test.go b/2019/intcode-processor/processor_test.go
new file mode 100644
index 0000000..0aaf045
--- /dev/null
+++ b/2019/intcode-processor/processor_test.go
@@ -0,0 +1,14 @@
+package intcode
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestNewProgram(t *testing.T) {
+	want := fmt.Sprintf("%v", []int{1})
+	p := NewProgram([]int{1})
+	if got := p.CodeString(); got != want {
+		t.Errorf("Program.CodeString() = %q, want %q", got, want)
+	}
+}