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core/vm: update tests

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This commit is contained in:
Felix Lange 2025-07-07 10:51:18 +02:00
parent 8c72226321
commit 891ae31ad2
1 changed files with 5 additions and 7 deletions
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12
core/vm/instructions_test.go
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@ -974,18 +974,18 @@ func TestPush(t *testing.T) {
}
func TestOpCLZ(t *testing.T) {
// set up once
evm := NewEVM(BlockContext{}, nil, params.TestChainConfig, Config{})
tests := []struct {
name string
inputHex string // hexadecimal input for clarity
inputHex string
want uint64 // expected CLZ result
}{
{"zero", "0x0", 256},
{"one", "0x1", 255},
{"all-ones (256 bits)", "0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 0},
{"low-10-bytes ones", "0xffffffffff", 216}, // 10 bytes = 80 bits, so 256-80=176? Actually input is 0xffffffffff = 40 bits so 256-40=216
{"low-40-bits", "0xffffffffff", 216}, // 40 bits, so 256-40 = 216
{"low-11-bits", "0x6ff", 245}, // 0x6ff = 0b11011111111 (11 bits), so 256-11 = 245
}
for _, tc := range tests {
@ -996,9 +996,8 @@ func TestOpCLZ(t *testing.T) {
// parse input
val := new(uint256.Int)
if _, err := fmt.Sscan(tc.inputHex, val); err != nil {
// fallback: try hex
val.SetFromHex(tc.inputHex)
if err := val.SetFromHex(tc.inputHex); err != nil {
t.Fatal("invalid hex uint256:", tc.inputHex)
}
stack.push(val)
@ -1008,7 +1007,6 @@ func TestOpCLZ(t *testing.T) {
t.Fatalf("stack length = %d; want 1", gotLen)
}
result := stack.pop()
if got := result.Uint64(); got != tc.want {
t.Fatalf("clz(%q) = %d; want %d", tc.inputHex, got, tc.want)
}