bff049c7a3
- Created UniswapV2Parser with Swap event parsing - Manual ABI decoding for reliability and performance - Token extraction from pool cache - Proper decimal handling (6, 8, 18 decimals) - Mint/Burn events recognized but ignored for MVP - Receipt parsing for multi-event transactions - Comprehensive test suite with 14 test cases - Test helpers for reusable mock logger and ABI encoding - Factory registration via NewDefaultFactory() - Defensive programming (nil logger allowed) Coverage: 86.6% on uniswap_v2.go Tests: All 14 test cases passing Lines: ~240 implementation, ~400 tests Fast MVP: Week 1, Days 1-2 ✅ COMPLETE 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
38 lines
1.2 KiB
Go
38 lines
1.2 KiB
Go
package parsers
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import (
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"context"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"coppertone.tech/fraktal/mev-bot/pkg/observability"
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)
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// mockLogger implements a simple logger for testing
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type mockLogger struct{}
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func (m *mockLogger) Debug(msg string, args ...any) {}
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func (m *mockLogger) Info(msg string, args ...any) {}
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func (m *mockLogger) Warn(msg string, args ...any) {}
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func (m *mockLogger) Error(msg string, args ...any) {}
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func (m *mockLogger) With(args ...any) observability.Logger { return m }
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func (m *mockLogger) WithContext(ctx context.Context) observability.Logger { return m }
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// encodeSwapData encodes UniswapV2 swap data in ABI format for testing
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func encodeSwapData(amount0In, amount1In, amount0Out, amount1Out *big.Int) []byte {
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// Each uint256 is 32 bytes
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data := make([]byte, 128) // 4 * 32 bytes
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// amount0In
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copy(data[0:32], common.LeftPadBytes(amount0In.Bytes(), 32))
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// amount1In
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copy(data[32:64], common.LeftPadBytes(amount1In.Bytes(), 32))
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// amount0Out
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copy(data[64:96], common.LeftPadBytes(amount0Out.Bytes(), 32))
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// amount1Out
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copy(data[96:128], common.LeftPadBytes(amount1Out.Bytes(), 32))
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return data
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}
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