test: add trader joe burner test

.github/workflows/main.yaml

@@ -40,4 +40,7 @@ jobs:
       run: pip install -r requirements.txt
 
     - name: Run Tests
-      run: brownie test tests/fork --network=mainnet-fork
+      run: brownie test tests/fork --network=mainnet-fork
+
+    - name: Run Avalanche Tests
+      run: brownie test tests/avalanche-fork --network=avax-main-fork

tests/avalanche-fork/Burners/test_traderjoe_burner.py

@@ -0,0 +1,63 @@
+# import brownie
+import pytest
+
+from abi.ERC20 import ERC20
+
+
+@pytest.fixture(scope="module")
+def burner(TraderJoeBurner, alice, receiver):
+    yield TraderJoeBurner.deploy(receiver, receiver, alice, alice, {"from": alice})
+
+
+WAVAX = "0xB31f66AA3C1e785363F0875A1B74E27b85FD66c7"
+USDT = "0xc7198437980c041c805A1EDcbA50c1Ce5db95118"
+WETH = "0x49D5c2BdFfac6CE2BFdB6640F4F80f226bc10bAB"
+DAI = "0xd586E7F844cEa2F87f50152665BCbc2C279D8d70"
+WBTC = "0x50b7545627a5162F82A992c33b87aDc75187B218"
+USDC_OLD = "0xb97ef9ef8734c71904d8002f8b6bc66dd9c48a6e"
+LINK = "0x5947BB275c521040051D82396192181b413227A3"
+
+TOKENS = [
+    (WAVAX, "0xdfe521292ece2a4f44242efbcd66bc594ca9714b"),
+    (USDT, "0x532e6537fea298397212f09a61e03311686f548e"),
+    (WETH, "0x53f7c5869a859f0aec3d334ee8b4cf01e3492f21"),
+    (DAI, "0x47afa96cdc9fab46904a55a6ad4bf6660b53c38a"),
+    (WBTC, "0x686bef2417b6dc32c50a3cbfbcc3bb60e1e9a15d"),
+    (USDC_OLD, "0xbf14db80d9275fb721383a77c00ae180fc40ae98"),
+    (LINK, "0x2842a5d74a0374a4749784477c686d27f82a9e03"),
+]
+
+
+@pytest.mark.parametrize("token,whale", TOKENS)
+def test_burn(MintableTestToken, USDC, alice, receiver, burner, token, whale):
+    token = MintableTestToken.from_abi("token", token, abi=ERC20)
+    amount = 1000 * (10 ** token.decimals())
+    token.transfer(alice, amount, {"from": whale})
+
+    token.approve(burner, 2 ** 256 - 1, {"from": alice})
+
+    burner.burn(token, {"from": alice})
+
+    assert token.balanceOf(alice) == 0
+    assert token.balanceOf(burner) == 0
+    assert token.balanceOf(receiver) == 0
+
+    assert USDC.balanceOf(alice) == 0
+    assert USDC.balanceOf(burner) == 0
+    assert USDC.balanceOf(receiver) > 0
+
+
+"""
+def test_burn_unburnable(MintableTestToken, USDC, alice, burner):
+    # CMC Rank 500 coin, not available in either sushi or uniswap
+    turtle = MintableTestToken.from_abi(
+        "turtle", "0xf3afdc2525568ffe743801c8c54bdea1704c9adb", abi=ERC20
+    )
+
+    amount = 10 ** turtle.decimals()
+
+    turtle._mint_for_testing(alice, amount, {"from": alice})
+    turtle.approve(burner, 2 ** 256 - 1, {"from": alice})
+    with brownie.reverts("neither Uniswap nor Sushiswap has liquidity pool for this token"):
+        burner.burn(turtle, {"from": alice})
+"""

tests/avalanche-fork/conftest.py

@@ -0,0 +1,21 @@
+import pytest
+from brownie_tokens import MintableForkToken
+
+from abi.ERC20 import ERC20
+
+
+class _MintableTestToken(MintableForkToken):
+    def __init__(self, address):
+        super().__init__(address)
+
+
+@pytest.fixture(scope="session")
+def MintableTestToken():
+    yield _MintableTestToken
+
+
+@pytest.fixture(scope="module")
+def USDC():
+    yield _MintableTestToken.from_abi(
+        "USDC", "0xA7D7079b0FEaD91F3e65f86E8915Cb59c1a4C664", abi=ERC20
+    )