Fix cover diagnostic messages to distinguish from assertions#413
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MikaelMayer wants to merge 8 commits intomainfrom
Open
Fix cover diagnostic messages to distinguish from assertions#413MikaelMayer wants to merge 8 commits intomainfrom
MikaelMayer wants to merge 8 commits intomainfrom
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- Test that cover failures produce 'cover property is not satisfiable' - Test that assert failures produce 'assertion does not hold' - Test that passing statements produce no diagnostics - Extract only messages to avoid unstable byteIdx in test expectations
Tests that same expression (x > 0) produces no diagnostic for cover (satisfiable) but produces 'assertion could not be proved' for assert (unprovable)
Tests that same expression (x > 0) produces no diagnostic for cover (satisfiable) but produces 'assertion could not be proved' for assert (unprovable)
aqjune-aws
reviewed
Feb 12, 2026
| some { | ||
| fileRange := default | ||
| message := s!"Internal error: diagnostics without position! Metadata value for fileRange key was not a fileRange. obligation label: {repr vcr.obligation.label}" | ||
| } |
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I wonder how the line numbers in CorePrelude.lean were recorded - do they have fileRange metadata?
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Summary
The
toDiagnosticModelfunction was not cover-aware - it always reported "assertion does not hold" even for cover statement failures.Changes
.failresults: report "cover property is not satisfiable" for cover statements, "assertion does not hold" for asserts.unknownresults on cover statements: only report diagnostic in debug mode (verbosity > normal), since it's informational rather than an error.unknownresults on asserts: always report "assertion could not be proved"Testing
The change affects diagnostic message generation only.