code kata 230808

int_to_string_230807/main_test.go

@@ -0,0 +1,43 @@
+package main
+
+import "testing"
+
+func IntToString(n int) string {
+	ret := make([]rune, 0)
+	for n > 0 {
+		num := n % 10
+		ret = append(ret, '0'+rune(num))
+		n /= 10
+	}
+	return ReverseString(ret)
+}
+
+func ReverseString(input []rune) string {
+	l := len(input)
+	for i := 0; i < l/2; i++ {
+		input[i], input[l-i-1] = input[l-i-1], input[i]
+	}
+	return string(input)
+}
+
+func TestIntToString(t *testing.T) {
+	tt := []struct {
+		name  string
+		input int
+		want  string
+	}{
+		{"1", 1, "1"},
+		{"11", 11, "11"},
+		{"112", 112, "112"},
+		{"1123789", 1123789, "1123789"},
+	}
+
+	for _, tc := range tt {
+		t.Run(tc.name, func(t *testing.T) {
+			got := IntToString(tc.input)
+			if got != tc.want {
+				t.Errorf("IntToString(%d) = %s, want %s", tc.input, got, tc.want)
+			}
+		})
+	}
+}