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Deterministic fixtures for stats calculations #43

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opened 2026-09-26 13:58:42 +00:00 by belvedere · 0 comments
belvedere commented 2026-09-26 13:58:42 +00:00
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Objective: Stats are where silent wrongness hides; pin them down.

Files:

  • Create: test/support/review_fixtures.ex
  • Create: test/first_thousand_words/study/stats_test.exs

Steps:

  1. A builder that generates reviews across a known date range with known grades.
  2. Assert mastery buckets, retention, streak and forecast buckets against hand-computed values.
  3. Include a timezone-boundary case for Europe/London.

Verify: mix test test/first_thousand_words/study/stats_test.exs — all pass.

**Objective:** Stats are where silent wrongness hides; pin them down. **Files:** - Create: `test/support/review_fixtures.ex` - Create: `test/first_thousand_words/study/stats_test.exs` **Steps:** 1. A builder that generates reviews across a known date range with known grades. 2. Assert mastery buckets, retention, streak and forecast buckets against hand-computed values. 3. Include a timezone-boundary case for Europe/London. **Verify:** `mix test test/first_thousand_words/study/stats_test.exs` — all pass.
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area
auth
 Authentication and authorisation

  
area
data
 Word frequency + translation import pipeline

  
area
domain
 Ash resources, domains, policies, migrations

  
area
infra
 Releases, deployment, CI

  
area
stats
 Progress tracking, dashboards, analytics

  
area
study
 Spaced-repetition engine, decks, cards, reviews

  
area
tooling
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area
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duplicate
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nickkeers/first-thousand-words#43
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