Merge branch 'dev' into start-at-zero

Makefile

@@ -2,7 +2,6 @@ SPEC_DIR = ./specs
 SCRIPT_DIR = ./scripts
 TEST_LIBS_DIR = ./test_libs
 PY_SPEC_DIR = $(TEST_LIBS_DIR)/pyspec
-PY_TEST_DIR = ./py_tests
 YAML_TEST_DIR = ./yaml_tests
 GENERATOR_DIR = ./test_generators
 CONFIGS_DIR = ./configs
@@ -24,7 +23,7 @@ all: $(PY_SPEC_ALL_TARGETS) $(YAML_TEST_DIR) $(YAML_TEST_TARGETS)
 clean:
 	rm -rf $(YAML_TEST_DIR)
 	rm -rf $(GENERATOR_VENVS)
-	rm -rf $(PY_TEST_DIR)/venv $(PY_TEST_DIR)/.pytest_cache
+	rm -rf $(PY_SPEC_DIR)/venv $(PY_SPEC_DIR)/.pytest_cache
 	rm -rf $(PY_SPEC_ALL_TARGETS)
 
 # "make gen_yaml_tests" to run generators
@@ -32,7 +31,7 @@ gen_yaml_tests: $(YAML_TEST_DIR) $(YAML_TEST_TARGETS)
 
 # runs a limited set of tests against a minimal config
 test: $(PY_SPEC_ALL_TARGETS)
-	cd $(PY_TEST_DIR); python3 -m venv venv; . venv/bin/activate; pip3 install -r requirements.txt; pytest -m minimal_config .
+	cd $(PY_SPEC_DIR); python3 -m venv venv; . venv/bin/activate; pip3 install -r requirements.txt; python -m pytest -m minimal_config .
 
 # "make pyspec" to create the pyspec for all phases.
 pyspec: $(PY_SPEC_ALL_TARGETS)

README.md

@@ -37,6 +37,5 @@ The following are the broad design goals for Ethereum 2.0:
 
 Documentation on the different components used during spec writing can be found here:
 * [YAML Test Generators](test_generators/README.md)
-* [Executable Python Spec](test_libs/pyspec/README.md)
-* [Py-tests](py_tests/README.md)
+* [Executable Python Spec, with Py-tests](test_libs/pyspec/README.md)
 

configs/constant_presets/mainnet.yaml

@@ -62,8 +62,8 @@ SLOTS_PER_EPOCH: 64
 MIN_SEED_LOOKAHEAD: 1
 # 2**2 (= 4) epochs 25.6 minutes
 ACTIVATION_EXIT_DELAY: 4
-# 2**4 (= 16) epochs ~1.7 hours
-EPOCHS_PER_ETH1_VOTING_PERIOD: 16
+# 2**10 (= 1,024) slots ~1.7 hours
+SLOTS_PER_ETH1_VOTING_PERIOD: 1024
 # 2**13 (= 8,192) slots ~13 hours
 SLOTS_PER_HISTORICAL_ROOT: 8192
 # 2**8 (= 256) epochs ~27 hours

configs/constant_presets/minimal.yaml

@@ -63,7 +63,7 @@ MIN_SEED_LOOKAHEAD: 1
 # 2**2 (= 4) epochs 25.6 minutes
 ACTIVATION_EXIT_DELAY: 4
 # [customized] higher frequency new deposits from eth1 for testing
-EPOCHS_PER_ETH1_VOTING_PERIOD: 2
+SLOTS_PER_ETH1_VOTING_PERIOD: 16
 # [customized] smaller state
 SLOTS_PER_HISTORICAL_ROOT: 64
 # 2**8 (= 256) epochs ~27 hours

py_tests/README.md

@@ -1,30 +0,0 @@
-# ETH 2.0 py-tests
-
-These tests are not intended for client-consumption.
-These tests are sanity tests, to verify if the spec itself is consistent.
-
-There are ideas to port these tests to the YAML test suite,
- but we are still looking for inputs on how this should work.
-
-## How to run tests
-
-### Automated
-
-Run `make test` from the root of the spec repository.
-
-### Manual
-
-From within the py_tests folder:
-
-Install dependencies:
-```bash
-python3 -m venv venv
-. venv/bin/activate
-pip3 install -r requirements.txt
-```
-Note: make sure to run `make pyspec` from the root of the specs repository, to build the pyspec requirement.
-
-Run the tests:
-```
-pytest -m minimal_config .
-```

py_tests/requirements.txt

@@ -1,7 +0,0 @@
-eth-utils>=1.3.0,<2
-eth-typing>=2.1.0,<3.0.0
-oyaml==0.7
-pycryptodome==3.7.3
-py_ecc>=1.6.0
-pytest>=3.6,<3.7
-../test_libs/pyspec

specs/core/0_beacon-chain.md

@@ -25,7 +25,6 @@
             - [`Fork`](#fork)
             - [`Crosslink`](#crosslink)
             - [`Eth1Data`](#eth1data)
-            - [`Eth1DataVote`](#eth1datavote)
             - [`AttestationData`](#attestationdata)
             - [`AttestationDataAndCustodyBit`](#attestationdataandcustodybit)
             - [`IndexedAttestation`](#indexedattestation)
@@ -116,7 +115,6 @@
             - [Helper functions](#helper-functions-1)
             - [Justification](#justification)
             - [Crosslinks](#crosslinks)
-            - [Eth1 data](#eth1-data)
             - [Rewards and penalties](#rewards-and-penalties)
                 - [Justification and finalization](#justification-and-finalization)
                 - [Crosslinks](#crosslinks-1)
@@ -227,7 +225,7 @@ These configurations are updated for releases, but may be out of sync during `de
 | `SLOTS_PER_EPOCH` | `2**6` (= 64) | slots | 6.4 minutes |
 | `MIN_SEED_LOOKAHEAD` | `2**0` (= 1) | epochs | 6.4 minutes |
 | `ACTIVATION_EXIT_DELAY` | `2**2` (= 4) | epochs | 25.6 minutes |
-| `EPOCHS_PER_ETH1_VOTING_PERIOD` | `2**4` (= 16) | epochs | ~1.7 hours |
+| `SLOTS_PER_ETH1_VOTING_PERIOD` | `2**10` (= 1,024) | slots | ~1.7 hours |
 | `SLOTS_PER_HISTORICAL_ROOT` | `2**13` (= 8,192) | slots | ~13 hours |
 | `MIN_VALIDATOR_WITHDRAWABILITY_DELAY` | `2**8` (= 256) | epochs | ~27 hours |
 | `PERSISTENT_COMMITTEE_PERIOD` | `2**11` (= 2,048)  | epochs | 9 days  |
@@ -323,17 +321,6 @@ The types are defined topologically to aid in facilitating an executable version
 }
 ```
 
-#### `Eth1DataVote`
-
-```python
-{
-    # Data being voted for
-    'eth1_data': Eth1Data,
-    # Vote count
-    'vote_count': 'uint64',
-}
-```
-
 #### `AttestationData`
 
 ```python
@@ -613,7 +600,7 @@ The types are defined topologically to aid in facilitating an executable version
 
     # Ethereum 1.0 chain data
     'latest_eth1_data': Eth1Data,
-    'eth1_data_votes': [Eth1DataVote],
+    'eth1_data_votes': [Eth1Data],
     'deposit_index': 'uint64',
 }
 ```
@@ -1757,21 +1744,6 @@ def process_crosslinks(state: BeaconState) -> None:
                 )
 ```
 
-#### Eth1 data
-
-Run the following function:
-
-```python
-def maybe_reset_eth1_period(state: BeaconState) -> None:
-    if (get_current_epoch(state) + 1) % EPOCHS_PER_ETH1_VOTING_PERIOD == 0:
-        for eth1_data_vote in state.eth1_data_votes:
-            # If a majority of all votes were for a particular eth1_data value,
-            # then set that as the new canonical value
-            if eth1_data_vote.vote_count * 2 > EPOCHS_PER_ETH1_VOTING_PERIOD * SLOTS_PER_EPOCH:
-                state.latest_eth1_data = eth1_data_vote.eth1_data
-        state.eth1_data_votes = []
-```
-
 #### Rewards and penalties
 
 First, we define some additional helpers:
@@ -1964,6 +1936,9 @@ Run the following function:
 def finish_epoch_update(state: BeaconState) -> None:
     current_epoch = get_current_epoch(state)
     next_epoch = current_epoch + 1
+    # Reset eth1 data votes
+    if state.slot % SLOTS_PER_ETH1_VOTING_PERIOD == 0:
+        state.eth1_data_votes = []
     # Set active index root
     index_root_position = (next_epoch + ACTIVATION_EXIT_DELAY) % LATEST_ACTIVE_INDEX_ROOTS_LENGTH
     state.latest_active_index_roots[index_root_position] = hash_tree_root(
@@ -2045,13 +2020,9 @@ def process_randao(state: BeaconState, block: BeaconBlock) -> None:
 
 ```python
 def process_eth1_data(state: BeaconState, block: BeaconBlock) -> None:
-    for eth1_data_vote in state.eth1_data_votes:
-        # If someone else has already voted for the same hash, add to its counter
-        if eth1_data_vote.eth1_data == block.body.eth1_data:
-            eth1_data_vote.vote_count += 1
-            return
-    # If we're seeing this hash for the first time, make a new counter
-    state.eth1_data_votes.append(Eth1DataVote(eth1_data=block.body.eth1_data, vote_count=1))
+    state.eth1_data_votes.append(block.body.eth1_data)
+    if state.eth1_data_votes.count(block.body.eth1_data) * 2 > SLOTS_PER_ETH1_VOTING_PERIOD:
+        state.latest_eth1_data = block.body.eth1_data
 ```
 
 #### Operations

test_libs/pyspec/README.md

@@ -7,6 +7,7 @@ With this executable spec,
  test-generators can easily create test-vectors for client implementations,
  and the spec itself can be verified to be consistent and coherent, through sanity tests implemented with pytest.
 
+
 ## Building
 
 All the dynamic parts of the spec can be build at once with `make pyspec`.
@@ -15,12 +16,42 @@ Alternatively, you can build a sub-set of the pyspec: `make phase0`.
 
 Or, to build a single file, specify the path, e.g. `make test_libs/pyspec/eth2spec/phase0/spec.py`
 
+
+## Py-tests
+
+These tests are not intended for client-consumption.
+These tests are sanity tests, to verify if the spec itself is consistent.
+
+### How to run tests
+
+#### Automated
+
+Run `make test` from the root of the spec repository.
+
+#### Manual
+
+From within the `pyspec` folder:
+
+Install dependencies:
+```bash
+python3 -m venv venv
+. venv/bin/activate
+pip3 install -r requirements.txt
+```
+Note: make sure to run `make pyspec` from the root of the specs repository,
+ to build the parts of the pyspec module derived from the markdown specs.
+
+Run the tests:
+```
+pytest -m minimal_config .
+```
+
+
 ## Contributing
 
 Contributions are welcome, but consider implementing your idea as part of the spec itself first.
 The pyspec is not a replacement.
-If you see opportunity to include any of the `pyspec/eth2spec/utils/` code in the spec,
- please submit an issue or PR.
+
 
 ## License
 

test_libs/pyspec/eth2spec/phase0/state_transition.py

@@ -93,7 +93,6 @@ def process_block(state: BeaconState,
 def process_epoch_transition(state: BeaconState) -> None:
     spec.update_justification_and_finalization(state)
     spec.process_crosslinks(state)
-    spec.maybe_reset_eth1_period(state)
     spec.apply_rewards(state)
     spec.process_balance_driven_status_transitions(state)
     spec.update_registry(state)

test_libs/pyspec/requirements.txt

@@ -2,3 +2,4 @@ eth-utils>=1.3.0,<2
 eth-typing>=2.1.0,<3.0.0
 pycryptodome==3.7.3
 py_ecc>=1.6.0
+pytest>=3.6,<3.7

test_libs/pyspec/setup.py

@@ -3,6 +3,7 @@ from setuptools import setup, find_packages
 setup(
     name='pyspec',
     packages=find_packages(),
+    tests_require=["pytest"],
     install_requires=[
         "eth-utils>=1.3.0,<2",
         "eth-typing>=2.1.0,<3.0.0",

test_libs/pyspec/tests/block_processing/test_process_attestation.py

@@ -11,7 +11,7 @@ from eth2spec.phase0.spec import (
     process_attestation,
     slot_to_epoch,
 )
-from phase0.helpers import (
+from tests.helpers import (
     build_empty_block_for_next_slot,
     get_valid_attestation,
 )

test_libs/pyspec/tests/block_processing/test_process_attester_slashing.py

@@ -7,7 +7,7 @@ from eth2spec.phase0.spec import (
     get_beacon_proposer_index,
     process_attester_slashing,
 )
-from phase0.helpers import (
+from tests.helpers import (
     get_valid_attester_slashing,
     next_epoch,
 )

test_libs/pyspec/tests/block_processing/test_process_block_header.py

@@ -8,7 +8,7 @@ from eth2spec.phase0.spec import (
     advance_slot,
     process_block_header,
 )
-from phase0.helpers import (
+from tests.helpers import (
     build_empty_block_for_next_slot,
     next_slot,
 )

test_libs/pyspec/tests/block_processing/test_process_deposit.py

@@ -8,7 +8,7 @@ from eth2spec.phase0.spec import (
     ZERO_HASH,
     process_deposit,
 )
-from phase0.helpers import (
+from tests.helpers import (
     build_deposit,
     privkeys,
     pubkeys,

test_libs/pyspec/tests/block_processing/test_process_proposer_slashing.py

@@ -7,7 +7,7 @@ from eth2spec.phase0.spec import (
     get_current_epoch,
     process_proposer_slashing,
 )
-from phase0.helpers import (
+from tests.helpers import (
     get_valid_proposer_slashing,
 )
 

test_libs/pyspec/tests/block_processing/test_voluntary_exit.py

@@ -9,7 +9,7 @@ from eth2spec.phase0.spec import (
     get_current_epoch,
     process_voluntary_exit,
 )
-from phase0.helpers import (
+from tests.helpers import (
     build_voluntary_exit,
     pubkey_to_privkey,
 )