token_test.gno
5.52 Kb ยท 190 lines
1package grc20
2
3import (
4 "math"
5 "testing"
6
7 "gno.land/p/nt/testutils"
8 "gno.land/p/nt/uassert"
9 "gno.land/p/nt/ufmt"
10 "gno.land/p/nt/urequire"
11)
12
13func TestTestImpl(t *testing.T) {
14 bank, _ := NewToken("Dummy", "DUMMY", 4)
15 urequire.False(t, bank == nil, "dummy should not be nil")
16}
17
18func TestToken(t *testing.T) {
19 var (
20 alice = testutils.TestAddress("alice")
21 bob = testutils.TestAddress("bob")
22 carl = testutils.TestAddress("carl")
23 )
24
25 bank, adm := NewToken("Dummy", "DUMMY", 6)
26
27 checkBalances := func(aliceEB, bobEB, carlEB int64) {
28 t.Helper()
29 exp := ufmt.Sprintf("alice=%d bob=%d carl=%d", aliceEB, bobEB, carlEB)
30 aliceGB := bank.BalanceOf(alice)
31 bobGB := bank.BalanceOf(bob)
32 carlGB := bank.BalanceOf(carl)
33 got := ufmt.Sprintf("alice=%d bob=%d carl=%d", aliceGB, bobGB, carlGB)
34 uassert.Equal(t, got, exp, "invalid balances")
35 }
36 checkAllowances := func(abEB, acEB, baEB, bcEB, caEB, cbEB int64) {
37 t.Helper()
38 exp := ufmt.Sprintf("ab=%d ac=%d ba=%d bc=%d ca=%d cb=%s", abEB, acEB, baEB, bcEB, caEB, cbEB)
39 abGB := bank.Allowance(alice, bob)
40 acGB := bank.Allowance(alice, carl)
41 baGB := bank.Allowance(bob, alice)
42 bcGB := bank.Allowance(bob, carl)
43 caGB := bank.Allowance(carl, alice)
44 cbGB := bank.Allowance(carl, bob)
45 got := ufmt.Sprintf("ab=%d ac=%d ba=%d bc=%d ca=%d cb=%s", abGB, acGB, baGB, bcGB, caGB, cbGB)
46 uassert.Equal(t, got, exp, "invalid allowances")
47 }
48
49 checkBalances(0, 0, 0)
50 checkAllowances(0, 0, 0, 0, 0, 0)
51
52 urequire.NoError(t, adm.Mint(alice, 1000))
53 urequire.NoError(t, adm.Mint(alice, 100))
54 checkBalances(1100, 0, 0)
55 checkAllowances(0, 0, 0, 0, 0, 0)
56
57 urequire.NoError(t, adm.Approve(alice, bob, 99999999))
58 checkBalances(1100, 0, 0)
59 checkAllowances(99999999, 0, 0, 0, 0, 0)
60
61 urequire.NoError(t, adm.Approve(alice, bob, 400))
62 checkBalances(1100, 0, 0)
63 checkAllowances(400, 0, 0, 0, 0, 0)
64
65 urequire.Error(t, adm.TransferFrom(alice, bob, carl, 100000000))
66 checkBalances(1100, 0, 0)
67 checkAllowances(400, 0, 0, 0, 0, 0)
68
69 urequire.NoError(t, adm.TransferFrom(alice, bob, carl, 100))
70 checkBalances(1000, 0, 100)
71 checkAllowances(300, 0, 0, 0, 0, 0)
72
73 urequire.Error(t, adm.SpendAllowance(alice, bob, 2000000))
74 checkBalances(1000, 0, 100)
75 checkAllowances(300, 0, 0, 0, 0, 0)
76
77 urequire.NoError(t, adm.SpendAllowance(alice, bob, 100))
78 checkBalances(1000, 0, 100)
79 checkAllowances(200, 0, 0, 0, 0, 0)
80}
81
82func TestMintOverflow(t *testing.T) {
83 alice := testutils.TestAddress("alice")
84 bob := testutils.TestAddress("bob")
85 tok, adm := NewToken("Dummy", "DUMMY", 6)
86
87 safeValue := int64(1 << 62)
88 urequire.NoError(t, adm.Mint(alice, safeValue))
89 urequire.Equal(t, tok.BalanceOf(alice), safeValue)
90
91 err := adm.Mint(bob, safeValue)
92 uassert.Error(t, err, "expected ErrMintOverflow")
93}
94
95func TestTransferFromAtomicity(t *testing.T) {
96 var (
97 owner = testutils.TestAddress("owner")
98 spender = testutils.TestAddress("spender")
99
100 invalidRecipient = address("")
101 )
102
103 token, admin := NewToken("Test", "TEST", 6)
104
105 // owner has 100 tokens, spender has 50 allowance
106 initialBalance := int64(100)
107 initialAllowance := int64(50)
108
109 urequire.NoError(t, admin.Mint(owner, initialBalance))
110 urequire.NoError(t, admin.Approve(owner, spender, initialAllowance))
111
112 // transfer to an invalid address to force a transfer failure
113 transferAmount := int64(30)
114 err := admin.TransferFrom(owner, spender, invalidRecipient, transferAmount)
115 uassert.Error(t, err, "transfer should fail due to invalid address")
116
117 ownerBalance := token.BalanceOf(owner)
118 uassert.Equal(t, ownerBalance, initialBalance, "owner balance should remain unchanged")
119
120 // check if allowance was incorrectly reduced
121 remainingAllowance := token.Allowance(owner, spender)
122 uassert.Equal(t, remainingAllowance, initialAllowance,
123 "allowance should not be reduced when transfer fails")
124}
125
126func TestMintUntilOverflow(t *testing.T) {
127 alice := testutils.TestAddress("alice")
128 bob := testutils.TestAddress("bob")
129 tok, adm := NewToken("Dummy", "DUMMY", 6)
130
131 tests := []struct {
132 name string
133 addr address
134 amount int64
135 expectedError error
136 expectedSupply int64
137 description string
138 }{
139 {
140 name: "mint negative value",
141 addr: alice,
142 amount: -1,
143 expectedError: ErrInvalidAmount,
144 expectedSupply: 0,
145 description: "minting a negative number should fail with ErrInvalidAmount",
146 },
147 {
148 name: "mint MaxInt64",
149 addr: alice,
150 amount: math.MaxInt64 - 1000,
151 expectedError: nil,
152 expectedSupply: math.MaxInt64 - 1000,
153 description: "minting almost MaxInt64 should succeed",
154 },
155 {
156 name: "mint small value",
157 addr: bob,
158 amount: 1000,
159 expectedError: nil,
160 expectedSupply: math.MaxInt64,
161 description: "minting a small value when close to MaxInt64 should succeed",
162 },
163 {
164 name: "mint value that would exceed MaxInt64",
165 addr: bob,
166 amount: 1,
167 expectedError: ErrMintOverflow,
168 expectedSupply: math.MaxInt64,
169 description: "minting any value when at MaxInt64 should fail with ErrMintOverflow",
170 },
171 }
172
173 for _, tt := range tests {
174 t.Run(tt.name, func(t *testing.T) {
175 err := adm.Mint(tt.addr, tt.amount)
176
177 if tt.expectedError != nil {
178 uassert.Error(t, err, tt.description)
179 if err == nil || err.Error() != tt.expectedError.Error() {
180 t.Errorf("expected error %v, got %v", tt.expectedError, err)
181 }
182 } else {
183 uassert.NoError(t, err, tt.description)
184 }
185
186 totalSupply := tok.TotalSupply()
187 uassert.Equal(t, totalSupply, tt.expectedSupply, "totalSupply should match expected value")
188 })
189 }
190}
