Add gcov-based test pruning with file-level coverage cache#1316

Merged

sbryngelson merged 10 commits intoMFlowCode:masterfrom

sbryngelson:gcov-test-pruning-v3-rebase

Mar 17, 2026

Commits on Mar 17, 2026

Add gcov-based test pruning with file-level coverage cache
sbryngelson
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Fix review findings: gcov error handling, diagnostics, comments
sbryngelson
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Add tests for load_coverage_cache and _compute_gcov_prefix_strip, clarify empty gcno_copies return
sbryngelson
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TEMP: disable cases.py staleness check and ALWAYS_RUN_ALL to test pruning
sbryngelson
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Wait for rebuild-cache when it runs, skip immediately when it doesn't
sbryngelson
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TEMP: bypass should_run_all_tests to test pruning on this PR
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Include example tests in coverage pruning and cache builds
sbryngelson
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Revert all TEMP changes: restore staleness check, ALWAYS_RUN_ALL, should_run_all_tests
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Fix _parse_gcov_json_output return type annotation to Optional[set]
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Fix lint: remove separator comments flagged by new source linter (#1193)
sbryngelson
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