borrow and maxborrow tests

x/leverage/keeper/msg_server_test.go

@@ -1310,6 +1310,13 @@ func (s *IntegrationTestSuite) TestMsgBorrow() {
  // collateral value is $50 (current) or $100 (historic)
  // collateral weights are always 0.25 in testing
 
+ // create an UMEE borrower using STABLE collateral
+ stableUmeeBorrower := s.newAccount(coin.New(stableDenom, 40_000000))
+ s.supply(stableUmeeBorrower, coin.New(stableDenom, 40_000000))
+ s.collateralize(stableUmeeBorrower, coin.New("u/"+stableDenom, 40_000000))
+ s.borrow(stableUmeeBorrower, coin.New(umeeDenom, 3_000000))
+ // UMEE and STABLE have the same price but different collateral weights
+
  tcs := []testCase{
  {
  "uToken",
@@ -1332,14 +1339,19 @@ func (s *IntegrationTestSuite) TestMsgBorrow() {
  coin.New(umeeDenom, 70_000000),
  nil,
  }, {
- "additional borrow",
- borrower,
- coin.New(umeeDenom, 20_000000),
+ "stable umee borrower (acceptable)",
+ stableUmeeBorrower,
+ coin.New(umeeDenom, 17_000000),
  nil,
+ }, {
+ "stable umee borrower (borrow factor limit)",
+ stableUmeeBorrower,
+ coin.New(umeeDenom, 1_000000),
+ types.ErrUndercollaterized,
  }, {
  "max supply utilization",
  borrower,
- coin.New(umeeDenom, 10_000000),
+ coin.New(umeeDenom, 9_000000),
  types.ErrMaxSupplyUtilization,
  }, {
  "atom borrow",
@@ -1457,6 +1469,13 @@ func (s *IntegrationTestSuite) TestMsgMaxBorrow() {
  // collateral value is $50 (current) or $100 (historic)
  // collateral weights are always 0.25 in testing
 
+ // create an UMEE borrower using STABLE collateral
+ stableUmeeBorrower := s.newAccount(coin.New(stableDenom, 100_000000))
+ s.supply(stableUmeeBorrower, coin.New(stableDenom, 100_000000))
+ s.collateralize(stableUmeeBorrower, coin.New("u/"+stableDenom, 100_000000))
+ s.borrow(stableUmeeBorrower, coin.New(umeeDenom, 30_000000))
+ // UMEE and STABLE have the same price but different collateral weights
+
  tcs := []struct {
  msg string
  addr sdk.AccAddress
@@ -1498,6 +1517,11 @@ func (s *IntegrationTestSuite) TestMsgMaxBorrow() {
  pumpborrower,
  coin.New(pumpDenom, 6_250000),
  nil,
+ }, {
+ "stable umee borrower",
+ stableUmeeBorrower,
+ coin.New(umeeDenom, 20_000000),
+ nil,
  },
  }