test_CMsgRecorderReadsLiveMessage

Regression tests for issues #338 and #1433.

A recorder attached to a C module’s C output message must read the module’s live message data, not a stale snapshot. The C-message read path reaches the payload by pointer arithmetic from the start of the {type}_C struct, so this test verifies end-to-end that the recorded payload tracks the values the module actually writes over time (and is not constant, which would indicate the recorder is bound to the wrong / a copied address).

The recorder also stores raw pointers into its Msg_C source. It must retain the object that owns that storage until the recorder is collected, including when config-owned storage transfers into a C-module wrapper.

test_CMsgRecorderReadsLiveMessage.test_cMsgRecorderReadsLiveMessage()

The C-message recorder must capture the module’s live, time-varying output.

test_CMsgRecorderReadsLiveMessage.test_configCMsgRecorderLeaseTransfersToWrapper()

A recorder lease follows config-owned storage into its C-module wrapper.

test_CMsgRecorderReadsLiveMessage.test_copiedCMsgRecorderKeepsSourceAlive()

A copied recorder inherits the original recorder’s source retention.

test_CMsgRecorderReadsLiveMessage.test_directCMsgRecorderConstructorKeepsSourceAlive()

The public recorder constructor retains a direct Msg_C argument.

test_CMsgRecorderReadsLiveMessage.test_directCppMsgRecorderConstructorKeepsSourceAlive()

The public recorder constructor retains a direct C++ message argument.

test_CMsgRecorderReadsLiveMessage.test_embeddedCMsgRecorderKeepsModuleOwnerAlive()

A recorder retains the module that owns an embedded Msg_C source.

test_CMsgRecorderReadsLiveMessage.test_standaloneCMsgRecorderKeepsSourceAlive()

A recorder retains its stand-alone Msg_C source until collection.