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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,169 @@ | ||
| // SPDX-License-Identifier: UNLICENSED | ||
| pragma solidity ^0.8.17; | ||
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| import {console2 as console} from "forge-std/console2.sol"; | ||
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| import {LinearIncreasingEscrow, IVotingEscrow, IEscrowCurve} from "src/escrow/increasing/LinearIncreasingEscrow.sol"; | ||
| import {IVotingEscrowIncreasing, ILockedBalanceIncreasing} from "src/escrow/increasing/interfaces/IVotingEscrowIncreasing.sol"; | ||
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| import {LinearCurveBase} from "./LinearBase.sol"; | ||
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| contract TestLinearIncreasingApplyTokenChange is LinearCurveBase { | ||
| function _copyNewToOld( | ||
| TokenPoint memory _new, | ||
| TokenPoint memory _old | ||
| ) internal pure returns (TokenPoint memory copied) { | ||
| _old.coefficients[0] = _new.coefficients[0]; | ||
| _old.coefficients[1] = _new.coefficients[1]; | ||
| _old.writtenTs = _new.writtenTs; | ||
| _old.checkpointTs = _new.checkpointTs; | ||
| _old.bias = _new.bias; | ||
| return _old; | ||
| } | ||
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| // when run on an empty global point, adds the user's own point | ||
| // deposit | ||
| function testEmptyGlobalDeposit() public { | ||
| vm.warp(100); | ||
| GlobalPoint memory globalPoint; | ||
| globalPoint.ts = block.timestamp; | ||
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| TokenPoint memory oldPoint; | ||
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| TokenPoint memory newPoint = curve.previewPoint(10 ether); | ||
| newPoint.checkpointTs = uint128(block.timestamp); | ||
| // write it | ||
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| globalPoint = curve.applyTokenUpdateToGlobal(0, oldPoint, newPoint, globalPoint); | ||
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| uint expectedBias = 10 ether; | ||
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| assertEq(uint(globalPoint.coefficients[0]) / 1e18, expectedBias); | ||
| assertEq(globalPoint.ts, block.timestamp); | ||
| assertEq(globalPoint.coefficients[1], newPoint.coefficients[1]); | ||
| } | ||
|
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| // change - same block | ||
| function testEmptyGlobalChangeSameBlock(uint128 _newBalance) public { | ||
| vm.warp(100); | ||
| GlobalPoint memory globalPoint; | ||
| globalPoint.ts = block.timestamp; | ||
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| TokenPoint memory oldPoint; | ||
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| TokenPoint memory newPoint0 = curve.previewPoint(10 ether); | ||
| newPoint0.checkpointTs = uint128(block.timestamp); | ||
| globalPoint = curve.applyTokenUpdateToGlobal(0, oldPoint, newPoint0, globalPoint); | ||
|
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| // copy the new to old point and redefine the new point | ||
| oldPoint = _copyNewToOld(newPoint0, oldPoint); | ||
|
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| TokenPoint memory newPoint1 = curve.previewPoint(_newBalance); | ||
| newPoint1.checkpointTs = uint128(block.timestamp); | ||
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| GlobalPoint memory newGlobalPoint = curve.applyTokenUpdateToGlobal( | ||
| 0, | ||
| oldPoint, | ||
| newPoint1, | ||
| globalPoint | ||
| ); | ||
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| assertEq(uint(newGlobalPoint.coefficients[0]) / 1e18, _newBalance); | ||
| assertEq(newGlobalPoint.ts, block.timestamp); | ||
| assertEq(newGlobalPoint.coefficients[1], newPoint1.coefficients[1]); | ||
| } | ||
|
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| // when run on an existing global point, increments the global point | ||
| // deposit | ||
| function testDepositOnExistingGlobalState() public { | ||
| vm.warp(100); | ||
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| GlobalPoint memory globalPoint; | ||
| globalPoint.ts = block.timestamp; | ||
|
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| // imagine the state is set with 100 ether total | ||
| globalPoint.coefficients[0] = curve.previewPoint(100 ether).coefficients[0]; | ||
| globalPoint.coefficients[1] = curve.previewPoint(100 ether).coefficients[1]; | ||
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| TokenPoint memory oldPoint; // 0 | ||
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| TokenPoint memory newPoint = curve.previewPoint(10 ether); | ||
| newPoint.checkpointTs = uint128(block.timestamp); | ||
|
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| int cachedSlope = globalPoint.coefficients[1]; | ||
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| globalPoint = curve.applyTokenUpdateToGlobal(0, oldPoint, newPoint, globalPoint); | ||
|
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| // expectation: bias && slope incremented | ||
| assertEq(uint(globalPoint.coefficients[0]) / 1e18, 110 ether); | ||
| assertEq(globalPoint.ts, block.timestamp); | ||
| assertEq(globalPoint.coefficients[1], cachedSlope + newPoint.coefficients[1]); | ||
| } | ||
|
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| // change - elapsed | ||
| function testChangeOnExistingGlobalStateElapsedTime() public { | ||
| vm.warp(100); | ||
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| GlobalPoint memory globalPoint; | ||
| globalPoint.ts = block.timestamp; | ||
|
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| // imagine the state is set with 100 ether total | ||
| globalPoint.coefficients[0] = curve.previewPoint(100 ether).coefficients[0]; | ||
| globalPoint.coefficients[1] = curve.previewPoint(100 ether).coefficients[1]; | ||
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| TokenPoint memory oldPoint; // 0 | ||
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| TokenPoint memory newPoint0 = curve.previewPoint(10 ether); | ||
| newPoint0.checkpointTs = uint128(block.timestamp); | ||
|
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| globalPoint = curve.applyTokenUpdateToGlobal(0, oldPoint, newPoint0, globalPoint); | ||
| int cachedCoeff0 = globalPoint.coefficients[0]; | ||
|
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| // copy the new to old point and redefine the new point | ||
| oldPoint = _copyNewToOld(newPoint0, oldPoint); | ||
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| vm.warp(200); | ||
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| TokenPoint memory newPoint1 = curve.previewPoint(20 ether); | ||
| newPoint1.checkpointTs = uint128(block.timestamp); | ||
|
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| // define a new global point by evaluating it over the elapsed time | ||
| globalPoint.coefficients[0] = curve.getBiasUnbound(100, globalPoint.coefficients); | ||
| globalPoint.ts = block.timestamp; | ||
|
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| GlobalPoint memory newGlobalPoint = curve.applyTokenUpdateToGlobal( | ||
| 0, | ||
| oldPoint, | ||
| newPoint1, | ||
| globalPoint | ||
| ); | ||
|
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| // we would now expect that the new global point is: | ||
| // 110 ether evaled over 100 seconds - (10 ether evaled over 100 seconds) + (20 ether) | ||
| uint expectedCoeff0 = curve.getBias(100, 110 ether) - | ||
| curve.getBias(100, 10 ether) + | ||
| 20 ether; | ||
| int expectedCoeff1 = globalPoint.coefficients[1] - | ||
| newPoint0.coefficients[1] + | ||
| newPoint1.coefficients[1]; | ||
|
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| assertEq(uint(newGlobalPoint.coefficients[0]) / 1e18, uint(expectedCoeff0)); | ||
| assertEq(newGlobalPoint.ts, block.timestamp); | ||
| assertEq(newGlobalPoint.coefficients[1], expectedCoeff1); | ||
| } | ||
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| // decrease | ||
| // exit | ||
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| // same block change | ||
| // deposit | ||
| // increase | ||
| // decrease | ||
| // exit | ||
|
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| // TODO a few extra tests here | ||
|
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| // change - future? | ||
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| // correctly maxes out based on the lockStart | ||
| } |
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