connect4_test.gno

  1package connect4
  2
  3import (
  4	"strings"
  5	"testing"
  6
  7	"gno.land/p/nt/avl/v0"
  8	"gno.land/p/nt/testutils/v0"
  9	"gno.land/p/nt/uassert/v0"
 10)
 11
 12var (
 13	alice = testutils.TestAddress("alice") // 🔴
 14	bob   = testutils.TestAddress("bob")   // 🟡
 15	carol = testutils.TestAddress("carol")
 16)
 17
 18func resetState() {
 19	games = avl.NewTree()
 20	nextID = 0
 21}
 22
 23// TestVerticalWin plays 🔴 stacking column 0 four high while 🟡 plays column 1.
 24func TestVerticalWin(cur realm, t *testing.T) {
 25	resetState()
 26
 27	testing.SetRealm(testing.NewUserRealm(alice))
 28	id := NewGame(cross(cur), bob)
 29	uassert.Equal(t, int64(1), id)
 30
 31	for i := 0; i < 3; i++ {
 32		testing.SetRealm(testing.NewUserRealm(alice))
 33		Drop(cross(cur), id,0)
 34		testing.SetRealm(testing.NewUserRealm(bob))
 35		Drop(cross(cur), id,1)
 36	}
 37	// alice's 4th disc in column 0 -> vertical win
 38	testing.SetRealm(testing.NewUserRealm(alice))
 39	Drop(cross(cur), id,0)
 40
 41	g, err := getGame(id)
 42	uassert.NoError(t, err)
 43	uassert.True(t, g.Finished)
 44	uassert.Equal(t, red, g.Winner)
 45
 46	out := Render("1")
 47	uassert.True(t, strings.Contains(out, "🔴 Red wins!"))
 48}
 49
 50// TestTurnOrderAndErrors covers turn enforcement, non-player, full-column and range checks.
 51func TestTurnOrderAndErrors(cur realm, t *testing.T) {
 52	resetState()
 53
 54	testing.SetRealm(testing.NewUserRealm(alice))
 55	id := NewGame(cross(cur), bob)
 56
 57	// bob cannot move first (red starts)
 58	testing.SetRealm(testing.NewUserRealm(bob))
 59	uassert.AbortsWithMessage(t, cur,"not your turn", func() {
 60		Drop(cross(cur), id,0)
 61	})
 62
 63	// stranger cannot play
 64	testing.SetRealm(testing.NewUserRealm(carol))
 65	uassert.AbortsWithMessage(t, cur,"caller is not a player in this game", func() {
 66		Drop(cross(cur), id,0)
 67	})
 68
 69	// out-of-range column
 70	testing.SetRealm(testing.NewUserRealm(alice))
 71	uassert.AbortsWithMessage(t, cur,"column out of range (0-6)", func() {
 72		Drop(cross(cur), id,7)
 73	})
 74
 75	// fill column 3: alice & bob alternate, 6 discs total
 76	col := 3
 77	for i := 0; i < 3; i++ {
 78		testing.SetRealm(testing.NewUserRealm(alice))
 79		Drop(cross(cur), id,col)
 80		testing.SetRealm(testing.NewUserRealm(bob))
 81		Drop(cross(cur), id,col)
 82	}
 83	// column now full; whoever is on turn overflows it
 84	g, _ := getGame(id)
 85	var mover address
 86	if g.Turn == red {
 87		mover = alice
 88	} else {
 89		mover = bob
 90	}
 91	testing.SetRealm(testing.NewUserRealm(mover))
 92	uassert.AbortsWithMessage(t, cur,"column is full", func() {
 93		Drop(cross(cur), id,col)
 94	})
 95}
 96
 97// TestHorizontalWin: 🔴 across columns 0-3 on the bottom row.
 98func TestHorizontalWin(cur realm, t *testing.T) {
 99	resetState()
100
101	testing.SetRealm(testing.NewUserRealm(alice))
102	id := NewGame(cross(cur), bob)
103
104	// alice drops cols 0,1,2 ; bob answers on row above (col 0,1,2)
105	for c := 0; c < 3; c++ {
106		testing.SetRealm(testing.NewUserRealm(alice))
107		Drop(cross(cur), id,c)
108		testing.SetRealm(testing.NewUserRealm(bob))
109		Drop(cross(cur), id,c)
110	}
111	// alice completes col 3 on bottom row -> 0,1,2,3 horizontal
112	testing.SetRealm(testing.NewUserRealm(alice))
113	Drop(cross(cur), id,3)
114
115	g, err := getGame(id)
116	uassert.NoError(t, err)
117	uassert.True(t, g.Finished)
118	uassert.Equal(t, red, g.Winner)
119}
120
121// TestRenderList checks the listing view renders created games.
122func TestRenderList(cur realm, t *testing.T) {
123	resetState()
124
125	testing.SetRealm(testing.NewUserRealm(alice))
126	NewGame(cross(cur), bob)
127
128	out := Render("")
129	uassert.True(t, strings.Contains(out, "Connect Four"))
130	uassert.True(t, strings.Contains(out, "to move"))
131}