Author and run the Ceedling build system for C unit testing - the canonical build orchestration on top of Unity (assertions) + CMock (mocks) + CException (exceptions). Covers ceedling new scaffolding, the project.yml schema (:project / :paths / :files / :defines / :flags / :tools / :test_runner / :cmock / :unity / :cexception / :gcov / :plugins), the task surface (test:all, test:{name}, test:pattern, test:path, release, clean / clobber, gcov:all, module:create, environment, dumpconfig), JUnit XML via the report_tests_* plugins, gcov integration, host vs cross-build flow, and CI wiring. CMock semantics - the generated Expect / Ignore / IgnoreArg / ReturnThruPtr / AddCallback / Stub / ExpectAndThrow family, cmock.yml :plugins, mock naming, tearDown verification, strict-vs-ignore matching - are in references/cmock.md. Use when a C project wants the ThrowTheSwitch trio bundled by one build command, or when authoring / reading CMock mocks. For the Unity assertion API see unity-test-framework-c.
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Per CeedlingPacket.md, the canonical top-level sections. Copy-paste template:
:project:
:build_root: build/
:release_build: TRUE
:use_mocks: TRUE
:use_exceptions: TRUE
:use_test_preprocessor: :all
:test_file_prefix: test_
:paths:
:test:
- test/**
:source:
- src/**
:include:
- inc/**
:support: []
:libraries: []
:files:
# .c, .h, .o extension mappings - usually default values
:defines:
:test:
- UNITY_INCLUDE_DOUBLE
:release:
- NDEBUG
:flags:
:release:
:compile:
'*':
- -O2
- -Wall
:link:
'*':
- -Wl,--gc-sections
:test:
:compile:
'*':
- -O0
- -g
- --coverage
:link:
'*':
- --coverage
:tools:
# Override compiler / linker / preprocessor executables here
:test_runner:
:includes:
- "Mock*.h"
:unity:
:defines:
- UNITY_INCLUDE_DOUBLE
:cmock:
:when_no_prototypes: :warn
:enforce_strict_ordering: TRUE
:plugins:
- :ignore
- :ignore_arg
- :expect_any_args
- :array
- :callback
- :return_thru_ptr
:cexception:
:defines:
- CEXCEPTION_T='signed char'
:gcov:
:reports:
- HtmlDetailed
- Cobertura
:gcovr:
:report_root: src/
:plugins:
:enabled:
- report_tests_pretty_stdout
- report_tests_junit_xml
- gcov
- module_generator:project holds the global on/off switches: :use_mocks, :use_exceptions, :test_file_prefix, :build_root.:paths supports glob patterns; '*' under :flags matches all files.:defines splits test-only vs release-only -D symbols (UNITY_INCLUDE_DOUBLE is a test-only define).:tools is where a cross-build overrides the compiler to arm-none-eabi-gcc.:unity sets Unity build-time defines, e.g. UNITY_INT_WIDTH=16 for 16-bit MCUs.:cmock plugin list - see cmock.md.:cexception type override; default is int, some MCUs prefer signed char.:gcov report formats: HtmlDetailed, Cobertura, SonarQube.| Plugin | Effect |
|---|---|
report_tests_pretty_stdout | Coloured terminal report |
report_tests_junit_xml | JUnit XML at build/artifacts/test/report.xml - feeds CI dashboards |
report_tests_log_factory | Generic reporter - emit multiple formats at once |
gcov | Coverage via gcov + gcovr (see embedded-coverage-strategy-reference) |
module_generator | Powers ceedling module:create[<name>] |
command_hooks | Run shell commands at pre/post lifecycle points |