Jupyter Kernel Conformance

Protocol compliance test results for Jupyter kernels

Last tested April 11, 2026 at 03:26 PMd381b07
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ocaml-jupyter

ocaml-jupyter (OCaml) • Protocol 5.2

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9 tests failing

18/27 passing (67%)
Timeout(5)
comm_info_request, interrupt_request, execution_count_increments +2 more
Protocol error: Error deserializing content for msg_type `history_reply`: missing field `status`(1)
history_request
No input_request received on stdin channel(1)
stdin_input_request

Timeout failures often indicate the kernel doesn't implement certain message types. Check if these messages are supported in your kernel.

heartbeat_responds
Kernel responds to heartbeat ping within timeout
heartbeat
Pass
iopub_welcome
Kernel sends iopub_welcome on XPUB subscription (JEP 65)
iopub_welcome
Partial
kernel_info_reply_valid
Kernel returns valid kernel_info_reply with status ok
kernel_info_request
Pass
kernel_info_has_language_info
kernel_info_reply contains non-empty language_info.name
kernel_info_request
Pass
kernel_info_has_protocol_version
kernel_info_reply contains non-empty protocol_version
kernel_info_request
Pass
execute_stdout
Execute code that prints produces stream message on stdout
execute_request1ms
Pass
execute_stderr
Execute code that prints to stderr produces stream message
stream1ms
Pass
execute_reply_ok
Execute valid code returns execute_reply with status ok
execute_request1ms
Pass
status_busy_idle_lifecycle
Kernel broadcasts busy then idle status on iopub during execution
status2ms
Pass
execute_input_broadcast
Kernel broadcasts execute_input on iopub when executing
execute_input1ms
Pass
shutdown_reply
Kernel responds to shutdown request and terminates cleanly
shutdown_request10001ms
Fail

complete_request
Kernel responds to completion request with complete_reply
complete_request2ms
Pass
inspect_request
Kernel responds to inspection request with inspect_reply
inspect_request2ms
Pass
is_complete_complete
Kernel correctly identifies complete code as 'complete'
is_complete_request
Partial
is_complete_incomplete
Kernel correctly identifies incomplete code as 'incomplete'
is_complete_request
Pass
history_request
Kernel responds to history request with history_reply
history_request1ms
Fail
comm_info_request
Kernel responds to comm_info request with comm_info_reply
comm_info_request10001ms
Fail
error_handling
Kernel properly reports errors for invalid syntax
execute_request1ms
Pass

stdin_input_request
Kernel can request input from frontend via stdin channel
input_request204ms
Fail
comms_lifecycle
Kernel supports comm open/msg/close lifecycle
comm_open611ms
Pass
interrupt_request
Kernel responds to interrupt request on control channel
interrupt_request10000ms
Fail
execution_count_increments
Execution count increments with each execute_request
execute_request20028ms
Fail
parent_header_correlation
All response messages contain correct parent_header
parent_header10020ms
Fail