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Version: 1.0.0b1
For the complete Mojo documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /docs/manual/basics.md).

assert_true

assert_true[T: Boolable, //](val: T, msg: String = "condition was unexpectedly False", *, location: Optional[SourceLocation] = None)

Asserts that the input value is True and raises an Error if it's not.

Parameters:

  • ​T (Boolable): The type of the value argument.

Args:

  • ​val (T): The value to assert to be True.
  • ​msg (String): The message to be printed if the assertion fails.
  • ​location (Optional[SourceLocation]): The location of the error (defaults to call_location).

Raises:

An Error with the provided message if assert fails and None otherwise.

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