number letter count

17_number_letter_count/number_letter_count_test.go

@@ -0,0 +1,93 @@
+package main
+
+import (
+	"testing"
+)
+
+func TestCountNumberLetter(t *testing.T) {
+	tt := []struct {
+		name  string
+		input int
+		want  int
+	}{
+		{
+			"1",
+			1,
+			3,
+		},
+		{
+			"15",
+			15,
+			7,
+		},
+		{
+			"90",
+			90,
+			6,
+		},
+		{
+			"100",
+			100,
+			10,
+		},
+		{
+			"300",
+			300,
+			12,
+		},
+		{
+			"23",
+			23,
+			11,
+		},
+		{
+			"123",
+			123,
+			24,
+		},
+		{
+			"120",
+			120,
+			19,
+		},
+		{
+			"115",
+			115,
+			20,
+		},
+		{
+			"320",
+			320,
+			21,
+		},
+		{
+			"444",
+			444,
+			23,
+		},
+		{
+			"499",
+			499,
+			24,
+		},
+		{
+			"342",
+			342,
+			23,
+		},
+		{
+			"110",
+			110,
+			16,
+		},
+	}
+
+	for _, tc := range tt {
+		t.Run(tc.name, func(t *testing.T) {
+			got := CountNumberLetter(tc.input)
+			if got != tc.want {
+				t.Errorf("CountNumberLetter(%d)=%d, want %d", tc.input, got, tc.want)
+			}
+		})
+	}
+}