[marketplace] tests for Failed state

contracts/AccountLocks.sol

@@ -64,25 +64,6 @@ contract AccountLocks {
     require(accountLocks.length == 0, "Account locked");
   }
 
-  /// Removes an account lock
-  function _removeAccountLock(address account, bytes32 lockId) internal {
-    require(accounts[account].locks.length > 0, "Account lock doesn't exist");
-    bytes32[] storage accountLocks = accounts[account].locks;
-    uint256 index = 0;
-    while (true) {
-      if (index >= accountLocks.length) {
-        return;
-      }
-      if (accountLocks[index] == lockId) {
-        accountLocks[index] = accountLocks[accountLocks.length - 1];
-        accountLocks.pop();
-      } else {
-        index++;
-      }
-    }
-
-  }
-
   function removeInactiveLocks(bytes32[] storage lockIds) private {
     uint256 index = 0;
     while (true) {

contracts/Marketplace.sol

@@ -55,8 +55,6 @@ contract Marketplace is Collateral, Proofs {
     RequestContext storage context = requestContexts[requestId];
     require(context.state == RequestState.Started, "Invalid state");
 
-    _removeAccountLock(slot.host, requestId);
-
     // TODO: burn host's slot collateral except for repair costs + mark proof
     // missing reward
     // Slot collateral is not yet implemented as the design decision was

contracts/TestCollateral.sol

@@ -23,8 +23,4 @@ contract TestCollateral is Collateral {
   function unlock(bytes32 id) public {
     _unlock(id);
   }
-
-  function removeAccountLock(address account, bytes32 lockId) public {
-    _removeAccountLock(account, lockId);
-  }
 }

test/Collateral.test.js

@@ -110,10 +110,5 @@ describe("Collateral", function () {
       await collateral.unlock(lock.id)
       await expect(collateral.withdraw()).not.to.be.reverted
     })
-
-    it("withdrawal succeeds when account lock has been removed", async function () {
-      await collateral.removeAccountLock(account0.address, lock.id)
-      await expect(collateral.withdraw()).not.to.be.reverted
-    })
   })
 })

test/Marketplace.test.js

@@ -4,7 +4,7 @@ const { expect } = require("chai")
 const { exampleRequest } = require("./examples")
 const { now, hours } = require("./time")
 const { requestId, slotId, askToArray } = require("./ids")
-const { waitUntilExpired, RequestState } = require("./marketplace")
+const { waitUntilExpired, waitUntilAllSlotsFilled, RequestState } = require("./marketplace")
 const { price, pricePerSlot } = require("./price")
 const {
   snapshot,
@@ -119,13 +119,6 @@ describe("Marketplace", function () {
       // await marketplace.fillSlot(slot.request, slot.index, proof)
     })
 
-    async function waitUntilAllSlotsFilled() {
-      const lastSlot = request.ask.slots - 1
-      for (let i = 0; i <= lastSlot; i++) {
-        await marketplace.fillSlot(slot.request, i, proof)
-      }
-    }
-
     it("fails to free slot when slot not filled", async function () {
       slot.index = 5
       let nonExistentId = slotId(slot)
@@ -140,19 +133,34 @@ describe("Marketplace", function () {
     })
 
     it("successfully frees slot", async function () {
-      await waitUntilAllSlotsFilled()
+      await waitUntilAllSlotsFilled(
+        marketplace,
+        request.ask.slots,
+        slot.request,
+        proof
+      )
       await expect(marketplace.freeSlot(id)).not.to.be.reverted
     })
 
     it("emits event once slot is freed", async function () {
-      await waitUntilAllSlotsFilled()
+      await waitUntilAllSlotsFilled(
+        marketplace,
+        request.ask.slots,
+        slot.request,
+        proof
+      )
       await expect(await marketplace.freeSlot(id))
         .to.emit(marketplace, "SlotFreed")
         .withArgs(slot.request, id)
     })
 
     it("cannot get slot once freed", async function () {
-      await waitUntilAllSlotsFilled()
+      await waitUntilAllSlotsFilled(
+        marketplace,
+        request.ask.slots,
+        slot.request,
+        proof
+      )
       await marketplace.freeSlot(id)
       await expect(marketplace.slot(id)).to.be.revertedWith("Slot empty")
     })
@@ -410,16 +418,34 @@ describe("Marketplace", function () {
       await expect(await marketplace.state(slot.request)).to.equal(
         RequestState.New
       )
-      // fill all slots, should change state to RequestState.Started
-      const lastSlot = request.ask.slots - 1
-      for (let i = 0; i <= lastSlot; i++) {
-        await marketplace.fillSlot(slot.request, i, proof)
-      }
+      await waitUntilAllSlotsFilled(
+        marketplace,
+        request.ask.slots,
+        slot.request,
+        proof
+      )
       await expect(await marketplace.state(slot.request)).to.equal(
         RequestState.Started
       )
     })
 
+    it("state is Failed once too many slots are freed", async function () {
+      await waitUntilAllSlotsFilled(
+        marketplace,
+        request.ask.slots,
+        slot.request,
+        proof
+      )
+      for (let i = 0; i <= request.ask.maxSlotLoss; i++) {
+        slot.index = i
+        let id = slotId(slot)
+        await marketplace.freeSlot(id)
+      }
+      await expect(await marketplace.state(slot.request)).to.equal(
+        RequestState.Failed
+      )
+    })
+
     it("changes state to Cancelled once request is cancelled", async function () {
       await waitUntilExpired(request.expiry)
       await expect(await marketplace.state(slot.request)).to.equal(

test/Storage.test.js

@@ -8,7 +8,7 @@ const { advanceTime, advanceTimeTo, currentTime, mine } = require("./evm")
 const { requestId, slotId } = require("./ids")
 const { periodic } = require("./time")
 const { price } = require("./price")
-const { waitUntilExpired } = require("./marketplace")
+const { waitUntilExpired, waitUntilAllSlotsFilled } = require("./marketplace")
 
 describe("Storage", function () {
   const proof = hexlify(randomBytes(42))
@@ -198,13 +198,6 @@ describe("Storage", function () {
       ;({ periodOf, periodEnd } = periodic(period))
     })
 
-    async function waitUntilAllSlotsFilled() {
-      const lastSlot = request.ask.slots - 1
-      for (let i = 0; i <= lastSlot; i++) {
-        await storage.fillSlot(slot.request, i, proof)
-      }
-    }
-
     async function waitUntilProofIsRequired(id) {
       await advanceTimeTo(periodEnd(periodOf(await currentTime())))
       while (
@@ -231,7 +224,12 @@ describe("Storage", function () {
     it("frees slot when collateral slashed below minimum threshold", async function () {
       const id = slotId(slot)
 
-      await waitUntilAllSlotsFilled()
+      await waitUntilAllSlotsFilled(
+        storage,
+        request.ask.slots,
+        slot.request,
+        proof
+      )
 
       while (true) {
         await markProofAsMissing(id)

test/marketplace.js

@@ -10,4 +10,11 @@ async function waitUntilExpired(expiry) {
   await ethers.provider.send("hardhat_mine", [ethers.utils.hexValue(expiry)])
 }
 
-module.exports = { waitUntilExpired, RequestState }
+async function waitUntilAllSlotsFilled(contract, numSlots, requestId, proof) {
+  const lastSlot = numSlots - 1
+  for (let i = 0; i <= lastSlot; i++) {
+    await contract.fillSlot(requestId, i, proof)
+  }
+}
+
+module.exports = { waitUntilExpired, waitUntilAllSlotsFilled }