Assert ROS 2 log messages published on /rosout.
expect_log/2 matches the log text with an exact string or regular expression.
Use :level, :name, :file, :function, and :line to constrain metadata.
expect_log ~r/connection .* failed/,
level: :error,
name: ~r/^robot./,
file: ~r/navigator.ex$/,
function: "handle_event",
line: 42
Summary
Functions
Assert that a ROS 2 log message matching message and optional metadata arrives.
Functions
Assert that a ROS 2 log message matching message and optional metadata arrives.
message, :name, :file, and :function accept an exact string or a
regular expression. :level accepts a ROS numeric level or one of :debug,
:info, :warn, :error, or :fatal; :line is an exact integer.
Pass :timeout as an additional option. Log collection starts automatically
with each scenario and retains a bounded buffer configured with
scenario ..., log_buffer_size: 100.