e803ef09ad
Fixes so that `push0` opcode is correctly reported as `true` by the `IsPush` function --------- Co-authored-by: Martin Holst Swende <martin@swende.se>
59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package asm
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import (
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"testing"
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"encoding/hex"
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)
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// Tests disassembling instructions
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func TestInstructionIterator(t *testing.T) {
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for i, tc := range []struct {
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want int
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code string
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wantErr string
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}{
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{2, "61000000", ""}, // valid code
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{0, "6100", "incomplete push instruction at 0"}, // invalid code
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{2, "5900", ""}, // push0
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{0, "", ""}, // empty
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} {
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var (
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have int
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code, _ = hex.DecodeString(tc.code)
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it = NewInstructionIterator(code)
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)
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for it.Next() {
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have++
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}
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var haveErr = ""
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if it.Error() != nil {
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haveErr = it.Error().Error()
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}
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if haveErr != tc.wantErr {
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t.Errorf("test %d: encountered error: %q want %q", i, haveErr, tc.wantErr)
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continue
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}
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if have != tc.want {
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t.Errorf("wrong instruction count, have %d want %d", have, tc.want)
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}
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}
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}
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