How do I test my logging behaviour?

Memento extends various base test macros for checking whether a log message was emitted or not.

using Memento
using Memento.TestUtils

# @test_log
logger = getlogger("test_log")
msg = "Hello!"
setlevel!(logger, "info")
@test_log(logger, "info", msg, Memento.info(logger, msg))

# Partial matches
msg = "Hello World!"
@test_log(logger, "info", "Hello", Memento.info(logger, msg))
@test_log(logger, "info", r"Hello*", Memento.info(logger, msg))
@test_log(logger, "info", ("Hello", "World"), Memento.info(logger, msg))
@test_log(logger, "info", x -> x == msg, Memento.info(logger, msg))

# @test_nolog
logger = getlogger("test_nolog")
setlevel!(logger, "info")

msg = "Hello!"
different_msg = "Goodbye"

@test_nolog(logger, "info", msg, nothing)
@test_nolog(logger, "info", msg, Memento.debug(logger, msg))
@test_nolog(logger, "info", msg, Memento.info(logger, different_msg))
@test_nolog(logger, "info", msg, Memento.warn(logger, different_msg))
@test_nolog(logger, "info", r".*foo.*", Memento.info(logger, "baz"))

# @test_warn
logger = getlogger("test_warn")
msg = "Hello!"
@test_warn(logger, msg, Memento.warn(logger, "Hello!"))

# @test_throws
logger = getlogger("test_log")
@test_throws(logger, ErrorException, error(logger, "Error!"))