"""Simple assertions which print the expected and received values on failure."""
+import os.path
import typing as T
+from pathlib import Path
from .log import log
raise ValueError(f'expected "{value}" to be truthy', value)
+def port(value: int) -> None:
+ """Check that value resembles a port."""
+ if not isinstance(value, int) or value < 1 or value > 65535:
+ raise ValueError(f'expected "{value}" to be be a port')
+
+
def equals(expected: Val, actual: Val) -> None:
"""Check that the two values are equal."""
if expected != actual:
raise ValueError(f"expected {text!r} to start with {prefix!r}")
+def greater(value: Num, than: Num) -> None:
+ """Check that value is greater than the other value."""
+ if value <= than:
+ raise ValueError(f"value {value} must be greater than {than}")
+
+
def in_range(value: Num, gte: Num, lte: Num) -> None:
"""Check that value lies in the range [min, max]."""
if not gte >= value >= lte:
if content0 != content1:
raise ValueError(f"expected files {path0} and {path1} to match")
+
+
+def file_exists(path: T.Union[str, Path]) -> None:
+ """Check that file or directory exists."""
+ if not os.path.exists(path):
+ raise ValueError("expected path '{path}' to exist")