from typing import Dict, List, NewType

TestName = NewType('TestName', str)
TestStep = NewType('TestStep', str)
TestResult = NewType('TestResult', str)
TestCase = Dict[TestName: Dict[TestStep: TestResult]]
TestCases = Dict[TestName: Dict[TestStep: List[TestResult]]]

def merge(first: TestCase, second: TestCase) -> TestCases:

T = TypeVar('T')

def linear_contains(iterable: Iterable[T], key: T) -> bool:
    for item in iterable:
        if item == key:
            return True
    return False

C = TypeVar("C", bound="Comparable")

class Comparable(Protocol):
    def __eq__(self, other: Any) -> bool:
        ...

    def __lt__(self: C, other: C) -> bool:
        ...

    def __gt__(self: C, other: C) -> bool:
        return (not self < other) and self != other

    def __le__(self: C, other: C) -> bool:
        return self < other or self == other

    def __ge__(self: C, other: C) -> bool:
        return not self < other