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getRecordedLogs

签名

struct Log {
  bytes32[] topics;
  bytes data;
  address emitter;
}

function getRecordedLogs()
external
returns (
  Log[] memory
);

描述

获取由 recordLogs 记录的发出的事件。

调用此函数将消耗记录的日志。

例子

/// event LogTopic1(
///   uint256 indexed topic1,
///   bytes data
/// );

/// event LogTopic12(
///   uint256 indexed topic1,
///   uint256 indexed topic2,
///   bytes data
/// );

/// bytes memory testData0 = "Some data";
/// bytes memory testData1 = "Other data";


// Start the recorder
vm.recordLogs();

emit LogTopic1(10, testData0);
emit LogTopic12(20, 30, testData1);

// Notice that your entries are <Interface>.Log[]
// as opposed to <instance>.Log[]
Vm.Log[] memory entries = vm.getRecordedLogs();

assertEq(entries.length, 2);

// Recall that topics[0] is the event signature
assertEq(entries[0].topics.length, 2);
assertEq(entries[0].topics[0], keccak256("LogTopic1(uint256,bytes)"));
assertEq(entries[0].topics[1], bytes32(uint256(10)));
// assertEq won't compare bytes variables. Try with strings instead.
assertEq(abi.decode(entries[0].data, (string)), string(testData0));

assertEq(entries[1].topics.length, 3);
assertEq(entries[1].topics[0], keccak256("LogTopic12(uint256,uint256,bytes)"));
assertEq(entries[1].topics[1], bytes32(uint256(20)));
assertEq(entries[1].topics[2], bytes32(uint256(30)));
assertEq(abi.decode(entries[1].data, (string)), string(testData1));

// Emit another event
emit LogTopic1(40, testData0);

// Your last read consumed the recorded logs,
// you will only get the latest emitted even after that call
entries = vm.getRecordedLogs();

assertEq(entries.length, 1);

assertEq(entries[0].topics.length, 2);
assertEq(entries[0].topics[0], keccak256("LogTopic1(uint256,bytes)"));
assertEq(entries[0].topics[1], bytes32(uint256(40)));
assertEq(abi.decode(entries[0].data, (string)), string(testData0));