Macro assert_command_stderr_string_contains_as_result 

macro_rules! assert_command_stderr_string_contains_as_result {
    ($command:expr, $containee:expr $(,)?) => { ... };
}

Assert a command stderr string contains a given containee.

Pseudocode:
(command ⇒ stderr ⇒ string) contains (expr into string)

• If true, return Result Ok(command ⇒ stderr ⇒ string).

• Otherwise, return Result Err(message).

This macro is useful for runtime checks, such as checking parameters, or sanitizing inputs, or handling different results in different ways.

Module macros

• assert_command_stderr_string_contains
• assert_command_stderr_string_contains_as_result
• debug_assert_command_stderr_string_contains