refactor: massive refactor to have only one binary to call

internal/2020/DayTwo/code_test.go

@@ -0,0 +1,26 @@
+package daytwo
+
+import "testing"
+
+var testInput = []string{
+	"1-3 a: abcde",
+	"1-3 b: cdefg",
+	"2-9 c: ccccccccc",
+}
+
+func TestPartOne(t *testing.T) {
+	expected := 2
+	got := PartOne(testInput)
+	if got != expected {
+		t.Errorf("PartOne() = %d, want %d", got, expected)
+	}
+}
+
+func TestPartTwo(t *testing.T) {
+	expected := 1
+	got := PartTwo(testInput)
+	if got != expected {
+		t.Errorf("PartTwo() = %d, want %d", got, expected)
+	}
+}
+