mirror of https://github.com/ConsenSys/mythril
blockchainethereumsmart-contractssoliditysecurityprogram-analysissecurity-analysissymbolic-execution
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108 lines
2.5 KiB
108 lines
2.5 KiB
import pytest
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from mythril.laser.ethereum.state import MachineState
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memory_extension_test_data = [
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(0, 0, 10),
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(0, 30, 10),
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(100, 22, 8)
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]
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@pytest.mark.parametrize("initial_size,start,extension_size", memory_extension_test_data)
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def test_memory_extension(initial_size, start, extension_size):
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# Arrange
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machine_state = MachineState(0)
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machine_state.memory = [0] * initial_size
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# Act
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machine_state.mem_extend(start, extension_size)
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# Assert
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assert machine_state.memory_size == len(machine_state.memory)
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assert machine_state.memory_size == max(initial_size, start + extension_size)
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stack_pop_too_many_test_data = [
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(0, 1),
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(0, 2),
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(5, 1),
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(5, 10)
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]
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@pytest.mark.parametrize("initial_size,overflow", stack_pop_too_many_test_data)
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def test_stack_pop_too_many(initial_size, overflow):
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# Arrange
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machine_state = MachineState(0)
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machine_state.stack = [42] * initial_size
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# Act + Assert
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with pytest.raises(IndexError):
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machine_state.pop(initial_size + overflow)
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stack_pop_test_data = [
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([1, 2, 3], 2, [3, 2]),
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([1, 3, 4, 7, 7, 1, 2], 5, [2, 1, 7, 7, 4])
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]
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@pytest.mark.parametrize("initial_stack,amount,expected", stack_pop_test_data)
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def test_stack_multiple_pop(initial_stack, amount, expected):
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# Arrange
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machine_state = MachineState(0)
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machine_state.stack = initial_stack[:]
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# Act
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results = machine_state.pop(amount)
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# Assert
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assert results == initial_stack[-amount:][::-1]
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assert results == expected
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assert len(machine_state.stack) == len(initial_stack) - amount
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def test_stack_multiple_pop_():
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# Arrange
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machine_state = MachineState(0)
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machine_state.stack = [1, 2, 3]
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# Act
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a, b = machine_state.pop(2)
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# Assert
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assert a == 3
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assert b == 2
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def test_stack_single_pop():
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# Arrange
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machine_state = MachineState(0)
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machine_state.stack = [1,2,3]
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# Act
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result = machine_state.pop()
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# Assert
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assert isinstance(result, int)
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memory_write_test_data = [
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(5, 10, [1, 2, 3]),
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(0, 0, [3, 4]),
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(20, 1, [2, 4, 10])
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]
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@pytest.mark.parametrize("initial_size, memory_offset, data", memory_write_test_data)
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def test_memory_write(initial_size, memory_offset, data):
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# Arrange
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machine_state = MachineState(0)
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machine_state.memory = [0]*initial_size
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# Act
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machine_state.memory_write(memory_offset, data)
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# Assert
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assert len(machine_state.memory) == max(initial_size, memory_offset+len(data))
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assert machine_state.memory[memory_offset:memory_offset+len(data)] == data
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