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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| // SPDX-License-Identifier: UNLICENSED | ||
| pragma solidity ^0.8.13; | ||
|
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| import { Test } from "forge-std/Test.sol"; | ||
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| import { MintableBurnableERC20 } from "../../src/predictionmarket/utils/MintableBurnableERC20.sol"; | ||
| import { MarketOutcome } from "../../src/predictionmarket/MarketResolver.sol"; | ||
| import { | ||
| Market, | ||
| MarketStatus, | ||
| NoValue, | ||
| ResolverOutcomeDecided, | ||
| PredictionMarket | ||
| } from "../../src/predictionmarket/PredictionMarket.sol"; | ||
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| import { TestResolver } from "./TestResolver.sol"; | ||
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| contract PredictionMarketTest is Test { | ||
| PredictionMarket public predictionMarket; | ||
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| function setUp() public { | ||
| predictionMarket = new PredictionMarket(); | ||
| } | ||
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| function test_newMarket_succeeds() public { | ||
| TestResolver testResolver = new TestResolver(); | ||
| predictionMarket.newMarket(testResolver); | ||
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| (MarketStatus status, MarketOutcome outcome, , , , ) = predictionMarket.markets(testResolver); | ||
| if (status != MarketStatus.OPEN) fail(); | ||
| if (outcome != MarketOutcome.UNDECIDED) fail(); | ||
| } | ||
|
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| function test_newMarket_addLiquidityWithValue_succeeds() public { | ||
| TestResolver testResolver = new TestResolver(); | ||
| predictionMarket.newMarket{ value: 1 ether }(testResolver); | ||
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| (, , MintableBurnableERC20 yesToken, MintableBurnableERC20 noToken, MintableBurnableERC20 lpToken, uint256 liquidity) = | ||
| predictionMarket.markets(testResolver); | ||
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| // eth balance is tracked | ||
| assertEq(liquidity, 1 ether); | ||
|
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| // lp and pool tokens at fair odds | ||
| assertEq(lpToken.balanceOf(address(this)), liquidity); | ||
| assertEq(yesToken.balanceOf(address(predictionMarket)), liquidity); | ||
| assertEq(noToken.balanceOf(address(predictionMarket)), liquidity); | ||
| } | ||
|
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| function test_newMarket_decidedOutcome_reverts() public { | ||
| TestResolver testResolver = new TestResolver(); | ||
| testResolver.setOutcome(MarketOutcome.YES); | ||
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| vm.expectRevert(ResolverOutcomeDecided.selector); | ||
| predictionMarket.newMarket(testResolver); | ||
| } | ||
|
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| function test_buyOutcome_succeeds() public { | ||
| // seed some liquidity | ||
| TestResolver testResolver = new TestResolver(); | ||
| predictionMarket.newMarket{ value: 1 ether }(testResolver); | ||
|
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| (, , MintableBurnableERC20 yesToken, , ,) = predictionMarket.markets(testResolver); | ||
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| // buy YES outcome with half of the available liquidity | ||
| uint256 expectedAmountOut = predictionMarket.calcOutcomeOut(testResolver, MarketOutcome.YES, 0.5 ether); | ||
| predictionMarket.buyOutcome{ value: 0.5 ether }(testResolver, MarketOutcome.YES); | ||
|
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| assertEq(yesToken.balanceOf(address(this)), expectedAmountOut); | ||
|
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| // Additional ETH is now winnable in this pool | ||
| (, , , , , uint256 liquidity) = predictionMarket.markets(testResolver); | ||
| assertEq(liquidity, 1.5 ether); | ||
| } | ||
|
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| function test_addLiquidity_succeeds() public { | ||
| TestResolver testResolver = new TestResolver(); | ||
| predictionMarket.newMarket{ value: 1 ether }(testResolver); | ||
|
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| // double the liquidity | ||
| predictionMarket.addLiquidity { value: 1 ether }(testResolver); | ||
|
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| (, , MintableBurnableERC20 yesToken, MintableBurnableERC20 noToken, MintableBurnableERC20 lpToken, uint256 liquidity) = | ||
| predictionMarket.markets(testResolver); | ||
|
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| assertEq(liquidity, 2 ether); | ||
|
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| // lp and pool tokens at fair odds | ||
| assertEq(lpToken.balanceOf(address(this)), liquidity); | ||
| assertEq(yesToken.balanceOf(address(predictionMarket)), liquidity); | ||
| assertEq(noToken.balanceOf(address(predictionMarket)), liquidity); | ||
| } | ||
|
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| function test_addLiquidity_noValue_reverts() public { | ||
| TestResolver testResolver = new TestResolver(); | ||
| predictionMarket.newMarket(testResolver); | ||
|
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| vm.expectRevert(NoValue.selector); | ||
| predictionMarket.addLiquidity(testResolver); | ||
| } | ||
|
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| function test_addLiquidity_atFairOdds_succeeds() public { | ||
| TestResolver testResolver = new TestResolver(); | ||
| predictionMarket.newMarket{ value: 1 ether }(testResolver); | ||
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| (, , MintableBurnableERC20 yesToken, MintableBurnableERC20 noToken, MintableBurnableERC20 lpToken, ) = | ||
| predictionMarket.markets(testResolver); | ||
|
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| // Perform a swap to skew the odds | ||
| predictionMarket.buyOutcome{ value: 0.5 ether }(testResolver, MarketOutcome.YES); | ||
|
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| uint256 yesBalance = yesToken.balanceOf(address(predictionMarket)); | ||
| uint256 noBalance = noToken.balanceOf(address(predictionMarket)); | ||
|
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| // add an additional ETH of liquidity via a new account | ||
| vm.prank(address(1)); vm.deal(address(1), 1 ether); | ||
| predictionMarket.addLiquidity{ value: 1 ether }(testResolver); | ||
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| uint256 newYesBalance = yesToken.balanceOf(address(predictionMarket)); | ||
| uint256 newNoBalance = noToken.balanceOf(address(predictionMarket)); | ||
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| // pool probabilities remain the same relative to lp supply -- added liquidity. (old 1eth, new 2eth) | ||
| assertEq(newYesBalance / 2 ether, yesBalance / 1 ether); | ||
| assertEq(newNoBalance / 2 ether, noBalance / 1 ether); | ||
|
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| // LP Supply should be equal between the two providers | ||
| assertEq(lpToken.balanceOf(address(this)), lpToken.balanceOf(address(1))); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| // SPDX-License-Identifier: UNLICENSED | ||
| pragma solidity 0.8.25; | ||
|
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| import { IMarketResolver, MarketOutcome } from "../../src/predictionmarket/MarketResolver.sol"; | ||
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| contract TestResolver is IMarketResolver { | ||
| MarketOutcome public outcome; | ||
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| function setOutcome(MarketOutcome _outcome) public { | ||
| outcome = _outcome; | ||
| } | ||
| } |