Add storeState NORMAL_RATCHET_SPEED update unit test

test/unit/Ramm/storeState.js

@@ -37,4 +37,28 @@ describe('storeState', function () {
     expect(after.eth).to.be.equal(newEth);
     expect(after.timestamp).to.be.equal(nextBlockTimestamp);
   });
+  it('should update ratchetSpeed to NORMAL_RATCHET_SPEED if budget is 0', async function () {
+    const fixture = await loadFixture(setup);
+    const { ramm } = fixture.contracts;
+    const [member] = fixture.accounts.members;
+    const [governance] = fixture.accounts.governanceContracts;
+
+    // set budget to 0
+    const governanceSigner = await ethers.provider.getSigner(governance.address);
+    await ramm.connect(governanceSigner).removeBudget();
+    const before = await ramm.loadState();
+
+    // do a swap to trigger storeState
+    const ethIn = parseEther('1');
+    const minTokensOut = parseEther('28');
+    const tx = await ramm.connect(member).swap(0, minTokensOut, { value: ethIn });
+    await tx.wait();
+
+    const EXPECTED_NORMAL_RATCHET_SPEED = 400;
+    const after = await ramm.loadState();
+
+    // check storeState correctly updated ratchetSpeed
+    expect(before.ratchetSpeed).to.be.not.equal(EXPECTED_NORMAL_RATCHET_SPEED);
+    expect(after.ratchetSpeed).to.be.equal(EXPECTED_NORMAL_RATCHET_SPEED);
+  });
 });