Use phase name constants for the fork names in test generators

tests/generators/bls/main.py

@@ -13,6 +13,7 @@ from gen_base import gen_runner, gen_typing
 from py_ecc import bls
 from hashlib import sha256
 
+from eth2spec.test.context import PHASE0
 
 def hash(x):
     return sha256(x).digest()
@@ -202,7 +203,7 @@ def create_provider(handler_name: str,
             print(data)
             (case_name, case_content) = data
             yield gen_typing.TestCase(
-                fork_name='phase0',
+                fork_name=PHASE0,
                 runner_name='bls',
                 handler_name=handler_name,
                 suite_name='small',

tests/generators/epoch_processing/main.py

@@ -13,6 +13,7 @@ from gen_base import gen_runner, gen_typing
 from gen_from_tests.gen import generate_from_tests
 from importlib import reload
 from eth2spec.config import config_util
+from eth2spec.test.context import PHASE0
 
 
 def create_provider(handler_name: str, tests_src, config_name: str) -> gen_typing.TestProvider:
@@ -28,7 +29,7 @@ def create_provider(handler_name: str, tests_src, config_name: str) -> gen_typin
             runner_name='epoch_processing',
             handler_name=handler_name,
             src=tests_src,
-            fork_name='phase0'
+            fork_name=PHASE0,
         )
 
     return gen_typing.TestProvider(prepare=prepare_fn, make_cases=cases_fn)

tests/generators/genesis/main.py

@@ -1,5 +1,6 @@
 from typing import Iterable
 
+from eth2spec.test.context import PHASE0
 from eth2spec.test.genesis import test_initialization, test_validity
 
 from gen_base import gen_runner, gen_typing
@@ -21,7 +22,7 @@ def create_provider(handler_name: str, tests_src, config_name: str) -> gen_typin
             runner_name='genesis',
             handler_name=handler_name,
             src=tests_src,
-            fork_name='phase0'
+            fork_name=PHASE0,
         )
 
     return gen_typing.TestProvider(prepare=prepare_fn, make_cases=cases_fn)

tests/generators/operations/main.py

@@ -15,6 +15,7 @@ from importlib import reload
 from eth2spec.config import config_util
 from eth2spec.phase0 import spec as spec_phase0
 from eth2spec.phase1 import spec as spec_phase1
+from eth2spec.test.context import PHASE0
 
 
 def create_provider(handler_name: str, tests_src, config_name: str) -> gen_typing.TestProvider:
@@ -30,7 +31,7 @@ def create_provider(handler_name: str, tests_src, config_name: str) -> gen_typin
             runner_name='operations',
             handler_name=handler_name,
             src=tests_src,
-            fork_name='phase0'
+            fork_name=PHASE0,
         )
 
     return gen_typing.TestProvider(prepare=prepare_fn, make_cases=cases_fn)

tests/generators/sanity/main.py

@@ -4,6 +4,7 @@ from importlib import reload
 from gen_base import gen_runner, gen_typing
 from gen_from_tests.gen import generate_from_tests
 
+from eth2spec.test.context import PHASE0
 from eth2spec.test.sanity import test_blocks, test_slots
 from eth2spec.config import config_util
 from eth2spec.phase0 import spec as spec_phase0
@@ -23,7 +24,7 @@ def create_provider(handler_name: str, tests_src, config_name: str) -> gen_typin
             runner_name='sanity',
             handler_name=handler_name,
             src=tests_src,
-            fork_name='phase0'
+            fork_name=PHASE0,
         )
 
     return gen_typing.TestProvider(prepare=prepare_fn, make_cases=cases_fn)

tests/generators/shuffling/main.py

@@ -6,6 +6,7 @@ from gen_base import gen_runner, gen_typing
 
 from eth2spec.config import config_util
 from eth2spec.phase0 import spec as spec
+from eth2spec.test.context import PHASE0
 
 
 def shuffling_case_fn(seed, count):
@@ -37,7 +38,7 @@ def create_provider(config_name: str) -> gen_typing.TestProvider:
     def cases_fn() -> Iterable[gen_typing.TestCase]:
         for (case_name, case_fn) in shuffling_test_cases():
             yield gen_typing.TestCase(
-                fork_name='phase0',
+                fork_name=PHASE0,
                 runner_name='shuffling',
                 handler_name='core',
                 suite_name='shuffle',

tests/generators/ssz_generic/main.py

@@ -6,6 +6,7 @@ import ssz_bitvector
 import ssz_boolean
 import ssz_uints
 import ssz_container
+from eth2spec.test.context import PHASE0
 
 
 def create_provider(handler_name: str, suite_name: str, case_maker) -> gen_typing.TestProvider:
@@ -16,7 +17,7 @@ def create_provider(handler_name: str, suite_name: str, case_maker) -> gen_typin
     def cases_fn() -> Iterable[gen_typing.TestCase]:
         for (case_name, case_fn) in case_maker():
             yield gen_typing.TestCase(
-                fork_name='phase0',
+                fork_name=PHASE0,
                 runner_name='ssz_generic',
                 handler_name=handler_name,
                 suite_name=suite_name,

tests/generators/ssz_static/main.py

@@ -8,6 +8,7 @@ from gen_base import gen_runner, gen_typing
 from eth2spec.debug import random_value, encode
 from eth2spec.config import config_util
 from eth2spec.phase0 import spec
+from eth2spec.test.context import PHASE0
 from eth2spec.utils.ssz.ssz_typing import Container
 from eth2spec.utils.ssz.ssz_impl import (
     hash_tree_root,
@@ -44,7 +45,7 @@ def ssz_static_cases(seed: int, name, ssz_type, mode: random_value.Randomization
 
     for i in range(count):
         yield gen_typing.TestCase(
-            fork_name='phase0',
+            fork_name=PHASE0,
             runner_name='ssz_static',
             handler_name=name,
             suite_name=f"ssz_{random_mode_name}{'_chaos' if chaos else ''}",