Test SSTORE Gas¶
Documentation for tests/amsterdam/eip8038_state_access_gas_cost_increase/test_sstore_gas.py@ffe48572.
Generate fixtures for these test cases for Bogota with:
Tests for EIP-8038: State-access gas cost update.
Covers the EIP-8038 SSTORE execution (non-state) gas schedule. The
state-creation charge for a zero-to-nonzero write is owned by EIP-8037
and is asserted separately; here every expectation is taken from the
execution_cost dimension only.
The execution SSTORE cost is the slot-access cost (COLD_STORAGE_ACCESS
when the key is cold, else WARM_SLOAD) plus, on the first change of the
slot in the transaction (original == current != new), the write cost
STORAGE_WRITE (modeled as COLD_STORAGE_WRITE - COLD_STORAGE_ACCESS).
Test Functions Overview¶
| Name | Type | Cases (Bogota) | Description |
|---|---|---|---|
test_sstore_cold_then_warm_same_slot |
state_test | 1 | A first SSTORE on a cold slot warms it; the second in-frame |
test_sstore_execution_gas |
state_test | 20 | Measure the execution SSTORE gas for each EIP-8038 row and assert it. |
test_sstore_stipend_sentry_boundary |
state_test | 4 | The EIP-2200 stipend sentry, not the slot's access cost, sets the |