rps_test.gno

 1package rps
 2
 3import (
 4	"testing"
 5
 6	"gno.land/p/nt/uassert/v0"
 7)
 8
 9func TestParse(t *testing.T) {
10	cases := []struct {
11		in   string
12		want Move
13		ok   bool
14	}{
15		{"rock", Rock, true},
16		{"Rock", Rock, true},
17		{" r ", Rock, true},
18		{"PAPER", Paper, true},
19		{"p", Paper, true},
20		{" scissors ", Scissors, true},
21		{"S", Scissors, true},
22		{"lizard", 0, false},
23		{"", 0, false},
24		{"ro", 0, false},
25	}
26	for _, c := range cases {
27		got, ok := Parse(c.in)
28		uassert.Equal(t, c.ok, ok, c.in)
29		uassert.Equal(t, int(c.want), int(got), c.in)
30	}
31}
32
33func TestString(t *testing.T) {
34	uassert.Equal(t, "rock", Rock.String())
35	uassert.Equal(t, "paper", Paper.String())
36	uassert.Equal(t, "scissors", Scissors.String())
37	uassert.Equal(t, "?", Move(3).String())
38	uassert.Equal(t, "?", Move(-1).String())
39}
40
41func TestBeats(t *testing.T) {
42	cases := []struct {
43		a, b Move
44		want int
45	}{
46		{Rock, Rock, 0},
47		{Paper, Paper, 0},
48		{Scissors, Scissors, 0},
49		{Paper, Rock, 1},
50		{Scissors, Paper, 1},
51		{Rock, Scissors, 1},
52		{Rock, Paper, 2},
53		{Paper, Scissors, 2},
54		{Scissors, Rock, 2},
55	}
56	for _, c := range cases {
57		uassert.Equal(t, c.want, Beats(c.a, c.b), c.a.String()+" vs "+c.b.String())
58	}
59}
60
61// Every move parses back from its own name.
62func TestRoundTrip(t *testing.T) {
63	for _, m := range []Move{Rock, Paper, Scissors} {
64		got, ok := Parse(m.String())
65		uassert.True(t, ok)
66		uassert.Equal(t, int(m), int(got))
67	}
68}