[diffs] Tests Audit#801

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amadeus/tests-audit

Jun 10, 2026

Commits on Jun 10, 2026

test(diffs): extract shared DOM harness

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test(diffs): add projection helpers; restructure virtualization tests

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test(diffs): replace renderer snapshots with behavioral projections

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test(diffs): replace parser snapshots with digests and invariants

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test(diffs): designate FileRenderer canary; fix filler AST assertions

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test(diffs): fix remaining vacuous assertions and magic numbers

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docs(diffs): record test conventions and coverage backlog

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PR feedback fix
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