133 lines
3.5 KiB
Python
133 lines
3.5 KiB
Python
import random
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from eth_utils import (
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to_tuple,
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)
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import ssz
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from ssz.sedes import (
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UInt,
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)
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from renderers import (
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render_test,
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render_test_case,
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)
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random.seed(0)
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BIT_SIZES = [i for i in range(8, 512 + 1, 8)]
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RANDOM_TEST_CASES_PER_BIT_SIZE = 10
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RANDOM_TEST_CASES_PER_LENGTH = 3
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def get_random_bytes(length):
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return bytes(random.randint(0, 255) for _ in range(length))
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def generate_uint_bounds_test():
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test_cases = generate_uint_bounds_test_cases() + generate_uint_out_of_bounds_test_cases()
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return render_test(
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title="UInt Bounds",
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summary="Integers right at or beyond the bounds of the allowed value range",
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fork="phase0-0.2.0",
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test_cases=test_cases,
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)
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def generate_uint_random_test():
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test_cases = generate_random_uint_test_cases()
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return render_test(
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title="UInt Random",
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summary="Random integers chosen uniformly over the allowed value range",
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fork="phase0-0.2.0",
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test_cases=test_cases,
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)
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def generate_uint_wrong_length_test():
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test_cases = generate_uint_wrong_length_test_cases()
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return render_test(
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title="UInt Wrong Length",
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summary="Serialized integers that are too short or too long",
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fork="phase0-0.2.0",
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test_cases=test_cases,
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)
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@to_tuple
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def generate_random_uint_test_cases():
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for bit_size in BIT_SIZES:
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sedes = UInt(bit_size)
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for _ in range(RANDOM_TEST_CASES_PER_BIT_SIZE):
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value = random.randrange(0, 2 ** bit_size)
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serial = ssz.encode(value, sedes)
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# note that we need to create the tags in each loop cycle, otherwise ruamel will use
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# YAML references which makes the resulting file harder to read
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tags = tuple(["atomic", "uint", "random"])
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yield render_test_case(
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sedes=sedes,
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valid=True,
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value=value,
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serial=serial,
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tags=tags,
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)
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@to_tuple
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def generate_uint_wrong_length_test_cases():
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for bit_size in BIT_SIZES:
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sedes = UInt(bit_size)
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lengths = sorted({
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0,
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sedes.length // 2,
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sedes.length - 1,
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sedes.length + 1,
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sedes.length * 2,
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})
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for length in lengths:
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for _ in range(RANDOM_TEST_CASES_PER_LENGTH):
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tags = tuple(["atomic", "uint", "wrong_length"])
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yield render_test_case(
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sedes=sedes,
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valid=False,
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serial=get_random_bytes(length),
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tags=tags,
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)
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@to_tuple
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def generate_uint_bounds_test_cases():
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common_tags = ("atomic", "uint")
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for bit_size in BIT_SIZES:
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sedes = UInt(bit_size)
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for value, tag in ((0, "uint_lower_bound"), (2 ** bit_size - 1, "uint_upper_bound")):
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serial = ssz.encode(value, sedes)
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yield render_test_case(
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sedes=sedes,
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valid=True,
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value=value,
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serial=serial,
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tags=common_tags + (tag,),
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)
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@to_tuple
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def generate_uint_out_of_bounds_test_cases():
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common_tags = ("atomic", "uint")
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for bit_size in BIT_SIZES:
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sedes = UInt(bit_size)
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for value, tag in ((-1, "uint_underflow"), (2 ** bit_size, "uint_overflow")):
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yield render_test_case(
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sedes=sedes,
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valid=False,
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value=value,
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tags=common_tags + (tag,),
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)
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