token_test.gno
5.55 Kb ยท 191 lines
1package grc20
2
3import (
4 "math"
5 "std"
6 "testing"
7
8 "gno.land/p/demo/testutils"
9 "gno.land/p/demo/uassert"
10 "gno.land/p/demo/ufmt"
11 "gno.land/p/demo/urequire"
12)
13
14func TestTestImpl(t *testing.T) {
15 bank, _ := NewToken("Dummy", "DUMMY", 4)
16 urequire.False(t, bank == nil, "dummy should not be nil")
17}
18
19func TestToken(t *testing.T) {
20 var (
21 alice = testutils.TestAddress("alice")
22 bob = testutils.TestAddress("bob")
23 carl = testutils.TestAddress("carl")
24 )
25
26 bank, adm := NewToken("Dummy", "DUMMY", 6)
27
28 checkBalances := func(aliceEB, bobEB, carlEB int64) {
29 t.Helper()
30 exp := ufmt.Sprintf("alice=%d bob=%d carl=%d", aliceEB, bobEB, carlEB)
31 aliceGB := bank.BalanceOf(alice)
32 bobGB := bank.BalanceOf(bob)
33 carlGB := bank.BalanceOf(carl)
34 got := ufmt.Sprintf("alice=%d bob=%d carl=%d", aliceGB, bobGB, carlGB)
35 uassert.Equal(t, got, exp, "invalid balances")
36 }
37 checkAllowances := func(abEB, acEB, baEB, bcEB, caEB, cbEB int64) {
38 t.Helper()
39 exp := ufmt.Sprintf("ab=%d ac=%d ba=%d bc=%d ca=%d cb=%s", abEB, acEB, baEB, bcEB, caEB, cbEB)
40 abGB := bank.Allowance(alice, bob)
41 acGB := bank.Allowance(alice, carl)
42 baGB := bank.Allowance(bob, alice)
43 bcGB := bank.Allowance(bob, carl)
44 caGB := bank.Allowance(carl, alice)
45 cbGB := bank.Allowance(carl, bob)
46 got := ufmt.Sprintf("ab=%d ac=%d ba=%d bc=%d ca=%d cb=%s", abGB, acGB, baGB, bcGB, caGB, cbGB)
47 uassert.Equal(t, got, exp, "invalid allowances")
48 }
49
50 checkBalances(0, 0, 0)
51 checkAllowances(0, 0, 0, 0, 0, 0)
52
53 urequire.NoError(t, adm.Mint(alice, 1000))
54 urequire.NoError(t, adm.Mint(alice, 100))
55 checkBalances(1100, 0, 0)
56 checkAllowances(0, 0, 0, 0, 0, 0)
57
58 urequire.NoError(t, adm.Approve(alice, bob, 99999999))
59 checkBalances(1100, 0, 0)
60 checkAllowances(99999999, 0, 0, 0, 0, 0)
61
62 urequire.NoError(t, adm.Approve(alice, bob, 400))
63 checkBalances(1100, 0, 0)
64 checkAllowances(400, 0, 0, 0, 0, 0)
65
66 urequire.Error(t, adm.TransferFrom(alice, bob, carl, 100000000))
67 checkBalances(1100, 0, 0)
68 checkAllowances(400, 0, 0, 0, 0, 0)
69
70 urequire.NoError(t, adm.TransferFrom(alice, bob, carl, 100))
71 checkBalances(1000, 0, 100)
72 checkAllowances(300, 0, 0, 0, 0, 0)
73
74 urequire.Error(t, adm.SpendAllowance(alice, bob, 2000000))
75 checkBalances(1000, 0, 100)
76 checkAllowances(300, 0, 0, 0, 0, 0)
77
78 urequire.NoError(t, adm.SpendAllowance(alice, bob, 100))
79 checkBalances(1000, 0, 100)
80 checkAllowances(200, 0, 0, 0, 0, 0)
81}
82
83func TestMintOverflow(t *testing.T) {
84 alice := testutils.TestAddress("alice")
85 bob := testutils.TestAddress("bob")
86 tok, adm := NewToken("Dummy", "DUMMY", 6)
87
88 safeValue := int64(1 << 62)
89 urequire.NoError(t, adm.Mint(alice, safeValue))
90 urequire.Equal(t, tok.BalanceOf(alice), safeValue)
91
92 err := adm.Mint(bob, safeValue)
93 uassert.Error(t, err, "expected ErrMintOverflow")
94}
95
96func TestTransferFromAtomicity(t *testing.T) {
97 var (
98 owner = testutils.TestAddress("owner")
99 spender = testutils.TestAddress("spender")
100
101 invalidRecipient = std.Address("")
102 )
103
104 token, admin := NewToken("Test", "TEST", 6)
105
106 // owner has 100 tokens, spender has 50 allowance
107 initialBalance := int64(100)
108 initialAllowance := int64(50)
109
110 urequire.NoError(t, admin.Mint(owner, initialBalance))
111 urequire.NoError(t, admin.Approve(owner, spender, initialAllowance))
112
113 // transfer to an invalid address to force a transfer failure
114 transferAmount := int64(30)
115 err := admin.TransferFrom(owner, spender, invalidRecipient, transferAmount)
116 uassert.Error(t, err, "transfer should fail due to invalid address")
117
118 ownerBalance := token.BalanceOf(owner)
119 uassert.Equal(t, ownerBalance, initialBalance, "owner balance should remain unchanged")
120
121 // check if allowance was incorrectly reduced
122 remainingAllowance := token.Allowance(owner, spender)
123 uassert.Equal(t, remainingAllowance, initialAllowance,
124 "allowance should not be reduced when transfer fails")
125}
126
127func TestMintUntilOverflow(t *testing.T) {
128 alice := testutils.TestAddress("alice")
129 bob := testutils.TestAddress("bob")
130 tok, adm := NewToken("Dummy", "DUMMY", 6)
131
132 tests := []struct {
133 name string
134 address_XXX std.Address
135 amount int64
136 expectedError error
137 expectedSupply int64
138 description string
139 }{
140 {
141 name: "mint negative value",
142 address_XXX: alice,
143 amount: -1,
144 expectedError: ErrInvalidAmount,
145 expectedSupply: 0,
146 description: "minting a negative number should fail with ErrInvalidAmount",
147 },
148 {
149 name: "mint MaxInt64",
150 address_XXX: alice,
151 amount: math.MaxInt64 - 1000,
152 expectedError: nil,
153 expectedSupply: math.MaxInt64 - 1000,
154 description: "minting almost MaxInt64 should succeed",
155 },
156 {
157 name: "mint small value",
158 address_XXX: bob,
159 amount: 1000,
160 expectedError: nil,
161 expectedSupply: math.MaxInt64,
162 description: "minting a small value when close to MaxInt64 should succeed",
163 },
164 {
165 name: "mint value that would exceed MaxInt64",
166 address_XXX: bob,
167 amount: 1,
168 expectedError: ErrMintOverflow,
169 expectedSupply: math.MaxInt64,
170 description: "minting any value when at MaxInt64 should fail with ErrMintOverflow",
171 },
172 }
173
174 for _, tt := range tests {
175 t.Run(tt.name, func(t *testing.T) {
176 err := adm.Mint(tt.address_XXX, tt.amount)
177
178 if tt.expectedError != nil {
179 uassert.Error(t, err, tt.description)
180 if err == nil || err.Error() != tt.expectedError.Error() {
181 t.Errorf("expected error %v, got %v", tt.expectedError, err)
182 }
183 } else {
184 uassert.NoError(t, err, tt.description)
185 }
186
187 totalSupply := tok.TotalSupply()
188 uassert.Equal(t, totalSupply, tt.expectedSupply, "totalSupply should match expected value")
189 })
190 }
191}
