improved coverage + changed file name of report

lucCoverageReport.txt

@@ -0,0 +1 @@
+{500: 1, 501: 1, 502: 1, 503: 2, 504: 2, 505: 4, 506: 4, 507: 2, 508: 1, 509: 0}

redbot/core/bank.py

@@ -357,7 +357,7 @@ async def set_balance(member: Union[discord.Member, discord.User], amount: int)
         coverage[506] += 1
         await group.name.set(member.display_name)
 
-    with open("blup.txt", "w") as file:
+    with open("lucCoverageReport.txt", "w") as file:
         file.write(str(coverage))
 
     return amount
@@ -405,7 +405,7 @@ async def withdraw_credits(member: discord.Member, amount: int) -> int:
     bal = await get_balance(member)
     if amount > bal: # 509
         coverage[509] += 1
-        with open("blup.txt", "w") as file:
+        with open("lucCoverageReport.txt", "w") as file:
             file.write(str(coverage))
         raise ValueError(
             "Insufficient funds {} > {}".format(
@@ -414,7 +414,7 @@ async def withdraw_credits(member: discord.Member, amount: int) -> int:
             )
         )
 
-    with open("blup.txt", "w") as file:
+    with open("lucCoverageReport.txt", "w") as file:
         file.write(str(coverage))
 
     return await set_balance(member, bal - amount)

tests/cogs/test_economy.py

@@ -85,6 +85,10 @@ async def test_bank_set(bank, member_factory):
 
     with pytest.raises(errors.BalanceTooHigh):
         await bank.set_balance(mbr,  2 ** 63)
+
+    await bank.set_global(True)
+    bank.set_balance(mbr, 100)
+    assert await bank.get_balance(mbr) == 100
 
 async def test_bank_withdraw(bank, member_factory):
     mbr = member_factory.get()