fix(tests): group mem heavy tests together

Some tests make heavy use of `lru_cache`. Others are just memory hungry.
By grouping these tests onto a single xdist worker, we consolidate
caches and prevent multiple big-memory tests from running at the same
time.

In some _very_ rough benchmarks, I see a reduction in memory use of
about 1.2GB on my local machine.

Author: SamWilsn

tests/osaka/eip7825_transaction_gas_limit_cap/test_tx_gas_limit.py

@@ -208,6 +208,7 @@ def total_cost_floor_per_token(fork: Fork):
     return gas_costs.G_TX_DATA_FLOOR_TOKEN_COST
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.parametrize(
     "exceed_tx_gas_limit,correct_intrinsic_cost_in_transaction_gas_limit",
     [

tests/osaka/eip7934_block_rlp_limit/test_max_block_rlp_size.py

@@ -381,6 +381,7 @@ def _exact_size_transactions_impl(
     return transactions, final_gas
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.parametrize(
     "delta",
     [
@@ -440,6 +441,7 @@ def test_block_at_rlp_size_limit_boundary(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.with_all_typed_transactions
 @pytest.mark.verify_sync
 def test_block_rlp_size_at_limit_with_all_typed_transactions(
@@ -479,6 +481,7 @@ def test_block_rlp_size_at_limit_with_all_typed_transactions(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.verify_sync
 def test_block_at_rlp_limit_with_logs(
     blockchain_test: BlockchainTestFiller,

tests/prague/eip7702_set_code_tx/test_set_code_txs.py

@@ -1812,6 +1812,7 @@ def test_set_code_to_self_destructing_account_deployed_in_same_tx(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 def test_set_code_multiple_first_valid_authorization_tuples_same_signer(
     state_test: StateTestFiller,
     pre: Alloc,
@@ -1859,6 +1860,7 @@ def test_set_code_multiple_first_valid_authorization_tuples_same_signer(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 def test_set_code_multiple_valid_authorization_tuples_same_signer_increasing_nonce(
     state_test: StateTestFiller,
     pre: Alloc,
@@ -1906,6 +1908,7 @@ def test_set_code_multiple_valid_authorization_tuples_same_signer_increasing_non
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 def test_set_code_multiple_valid_authorization_tuples_same_signer_increasing_nonce_self_sponsored(
     state_test: StateTestFiller,
     pre: Alloc,
@@ -2001,6 +2004,7 @@ def test_set_code_multiple_valid_authorization_tuples_first_invalid_same_signer(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 def test_set_code_all_invalid_authorization_tuples(
     state_test: StateTestFiller,
     pre: Alloc,
@@ -2040,6 +2044,7 @@ def test_set_code_all_invalid_authorization_tuples(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 def test_set_code_using_chain_specific_id(
     state_test: StateTestFiller,
     pre: Alloc,
@@ -2088,6 +2093,7 @@ def test_set_code_using_chain_specific_id(
 SECP256K1N_OVER_2 = SECP256K1N // 2
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.parametrize(
     "v,r,s",
     [
@@ -2148,6 +2154,7 @@ def test_set_code_using_valid_synthetic_signatures(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.parametrize(
     "v,r,s",
     [

tests/prague/eip7702_set_code_tx/test_set_code_txs_2.py

@@ -1441,6 +1441,7 @@ class DelegationTo(Enum):
     RESET = 3
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.valid_from("Prague")
 @pytest.mark.parametrize(
     "first_delegation", [DelegationTo.CONTRACT_A, DelegationTo.CONTRACT_B, DelegationTo.RESET]
@@ -1536,6 +1537,7 @@ def test_double_auth(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.valid_from("Prague")
 def test_pointer_resets_an_empty_code_account_with_storage(
     blockchain_test: BlockchainTestFiller,
@@ -1754,6 +1756,7 @@ def test_set_code_type_tx_pre_fork(
 
 
 @pytest.mark.valid_from("Prague")
+@pytest.mark.xdist_group(name="bigmem")
 def test_delegation_replacement_call_previous_contract(
     state_test: StateTestFiller,
     pre: Alloc,

tests/shanghai/eip3855_push0/test_push0.py

@@ -29,6 +29,7 @@
 pytestmark = pytest.mark.valid_from("Shanghai")
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.parametrize(
     "contract_code,expected_storage",
     [
@@ -120,6 +121,7 @@ def push0_contract_caller(
         )
         return pre.deploy_contract(call_code)
 
+    @pytest.mark.xdist_group(name="bigmem")
     @pytest.mark.parametrize(
         "call_opcode",
         [

tests/shanghai/eip3860_initcode/test_initcode.py

@@ -117,6 +117,7 @@
 """
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.parametrize(
     "initcode",
     [
@@ -481,6 +482,7 @@ def create2_word_cost(self, opcode: Op, fork: Fork, initcode: Initcode) -> int:
         gas_costs = fork.gas_costs()
         return ceiling_division(len(initcode), 32) * gas_costs.G_KECCAK_256_WORD
 
+    @pytest.mark.xdist_group(name="bigmem")
     def test_create_opcode_initcode(
         self,
         state_test: StateTestFiller,

tests/shanghai/eip4895_withdrawals/test_withdrawals.py

@@ -651,6 +651,7 @@ def test_zero_amount(
     )
 
 
+@pytest.mark.xdist_group(name="bigmem")
 def test_large_amount(
     blockchain_test: BlockchainTestFiller,
     pre: Alloc,
@@ -690,6 +691,7 @@ def test_large_amount(
     blockchain_test(pre=pre, post=post, blocks=blocks)
 
 
+@pytest.mark.xdist_group(name="bigmem")
 @pytest.mark.parametrize("amount", [0, 1])
 @pytest.mark.with_all_precompiles
 def test_withdrawing_to_precompiles(