---
phase: 1
slug: tradier-data-layer
status: draft
nyquist_compliant: false
wave_0_complete: false
created: 2026-03-29
---

# Phase 1 — Validation Strategy

> Per-phase validation contract for feedback sampling during execution.

---

## Test Infrastructure

| Property | Value |
|----------|-------|
| **Framework** | pytest >=8 |
| **Config file** | **None in Wave 0** — Wave 0 adds tests and dev deps only; no `pytest.ini` / `pyproject` `[tool.pytest]` block is required until markers grow. |
| **Quick run command** | `python -m pytest tests/unit/data/test_tradier.py -x -q` |
| **Full suite command** | `python -m pytest tests/ -q` |
| **Estimated runtime** | ~5 seconds |

**Tier / replay:** `tests/unit/data/test_tradier.py` is **Tier 2 (data layer)**. Use **vcrpy** (or pytest-vcr) to record/replay Tradier HTTP into `tests/fixtures/cassettes/tradier/` (or `tests/unit/data/cassettes/`).

---

## Sampling Rate

- **After every task commit:** Run `python -m pytest tests/unit/data/test_tradier.py -x -q`
- **After every plan wave:** Run `python -m pytest tests/ -q`
- **Before `/gsd:verify-work`:** Full suite must be green
- **Max feedback latency:** 5 seconds

---

## Per-Task Verification Map

| Task ID | Plan | Wave | Requirement | Test Type | Automated Command | File Exists | Status |
|---------|------|------|-------------|-----------|-------------------|-------------|--------|
| TBD | TBD | TBD | DATA-01 | unit | `python -m pytest tests/unit/data/test_tradier.py -k chain -q` | ❌ W0 | ⬜ pending |
| TBD | TBD | TBD | DATA-02 | unit | `python -m pytest tests/unit/data/test_tradier.py -k expirations -q` | ❌ W0 | ⬜ pending |
| TBD | TBD | TBD | DATA-03 | unit | `python -m pytest tests/unit/data/test_tradier.py -k greeks -q` | ❌ W0 | ⬜ pending |
| TBD | TBD | TBD | DATA-04 | unit | `python -m pytest tests/unit/data/test_tradier.py -k iv -q` | ❌ W0 | ⬜ pending |
| TBD | TBD | TBD | DATA-05 | unit | `python -m pytest tests/unit/data/test_tradier.py -k dte -q` | ❌ W0 | ⬜ pending |
| TBD | TBD | TBD | DATA-08 | integration | `python -m pytest tests/unit/data/test_tradier.py -k vendor -q` | ❌ W0 | ⬜ pending |

**DATA-06 / DATA-07:** Intentionally omitted here — validated in **Phase 2** (DATA-06) and **Phase 10** (DATA-07); see `.planning/REQUIREMENTS.md` traceability.

*Status: ⬜ pending · ✅ green · ❌ red · ⚠️ flaky*

---

## Wave 0 Requirements

- [ ] `tests/unit/data/test_tradier.py` — stubs/tests for DATA-01 through DATA-05 and DATA-08
- [ ] `tests/conftest.py` — shared fixtures; **vcrpy** cassette config for Tradier HTTP replay
- [ ] pytest + vcrpy dev install — `uv add --dev pytest>=8.0 vcrpy` (or equivalent)

*Aligned with the **Config file** row: Wave 0 does not add a pytest config file unless needed later.*

---

## Manual-Only Verifications

| Behavior | Requirement | Why Manual | Test Instructions |
|----------|-------------|------------|-------------------|
| Production Greeks accuracy | DATA-03 | Sandbox returns no Greeks; production API key required | Call chain for AAPL, verify delta/gamma/theta/vega/rho are non-null floats |

---

## Validation Sign-Off

- [ ] Every task has an **Automated Command** entry in the map above **or** an explicit Wave 0 dependency (no bare `<automated>` placeholders)
- [ ] Sampling continuity: no 3 consecutive tasks without automated verify
- [ ] Wave 0 covers all MISSING references
- [ ] No watch-mode flags
- [ ] Feedback latency < 5s
- [ ] `nyquist_compliant: true` set in frontmatter

**Approval:** pending