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test UnsupportedFlowInputs revert in flowInit #441

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thedavidmeister merged 1 commit into from
May 7, 2026
Merged

test UnsupportedFlowInputs revert in flowInit #441

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26 changes: 25 additions & 1 deletion test/src/concrete/Flow.construction.t.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ import {Vm} from "forge-std/Test.sol";

import {EvaluableConfigV3} from "rain.interpreter.interface/interface/IInterpreterCallerV2.sol";
import {FlowTest} from "test/abstract/FlowTest.sol";
import {EmptyFlowConfig} from "src/error/ErrFlow.sol";
import {EmptyFlowConfig, UnsupportedFlowInputs} from "src/error/ErrFlow.sol";

contract FlowConstructionTest is FlowTest {
function testFlowConstructionEmptyConfigReverts() external {
Expand All @@ -16,6 +16,30 @@ contract FlowConstructionTest is FlowTest {
I_CLONE_FACTORY.clone(impl, abi.encode(emptyConfig));
}

/// Reverts with `UnsupportedFlowInputs` when the deployer reports any
/// non-zero `flowInputs` byte in the IO string. Pinning this protects
/// against a future deployer behaviour change leaking non-zero inputs
/// through the guard at `Flow.flowInit`.
/// forge-config: default.fuzz.runs = 100
function testFlowConstructionRevertsOnNonZeroFlowInputs(
address expression,
bytes memory bytecode,
uint256[] memory constants,
uint8 flowInputs
) external {
vm.assume(flowInputs != 0);
// io: byte0 = flowInputs (non-zero), byte1 = 7 (>= MIN_FLOW_SENTINELS).
bytes memory io = abi.encodePacked(flowInputs, uint8(7));
expressionDeployerDeployExpression2MockCall(expression, io);

EvaluableConfigV3[] memory flowConfig = new EvaluableConfigV3[](1);
flowConfig[0] = EvaluableConfigV3(DEPLOYER, bytecode, constants);

address impl = deployFlowImplementation();
vm.expectRevert(UnsupportedFlowInputs.selector);
I_CLONE_FACTORY.clone(impl, abi.encode(flowConfig));
}

function testFlowConstructionInitialize(address expression, bytes memory bytecode, uint256[] memory constants)
external
{
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