feat: 2.0 - Backend API - GET /api/habits
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Echo
207
dashboard/test_habits_api.py
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207
dashboard/test_habits_api.py
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#!/usr/bin/env python3
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"""
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Tests for GET /api/habits endpoint.
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Validates API response structure, status codes, and error handling.
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"""
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import json
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import urllib.request
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import urllib.error
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from pathlib import Path
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from datetime import datetime
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# API endpoint - assumes server is running on localhost:8088
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API_BASE = 'http://localhost:8088'
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HABITS_FILE = Path(__file__).parent / 'habits.json'
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def test_habits_endpoint_exists():
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"""Test that GET /api/habits endpoint exists and returns 200."""
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print("Testing endpoint exists and returns 200...")
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try:
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response = urllib.request.urlopen(f'{API_BASE}/api/habits', timeout=5)
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status_code = response.getcode()
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assert status_code == 200, f"Expected status 200, got {status_code}"
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print("✓ Endpoint returns 200 status")
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except urllib.error.HTTPError as e:
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raise AssertionError(f"Endpoint returned HTTP {e.code}: {e.reason}")
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except urllib.error.URLError as e:
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raise AssertionError(f"Could not connect to API server: {e.reason}")
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def test_habits_response_is_json():
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"""Test that response is valid JSON."""
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print("Testing response is valid JSON...")
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try:
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response = urllib.request.urlopen(f'{API_BASE}/api/habits', timeout=5)
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content = response.read().decode('utf-8')
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try:
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data = json.loads(content)
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print("✓ Response is valid JSON")
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return data
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except json.JSONDecodeError as e:
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raise AssertionError(f"Response is not valid JSON: {e}")
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except urllib.error.URLError as e:
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raise AssertionError(f"Could not connect to API server: {e.reason}")
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def test_habits_response_structure():
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"""Test that response has correct structure: habits array and lastUpdated."""
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print("Testing response structure...")
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data = test_habits_response_is_json()
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# Check for habits array
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assert 'habits' in data, "Response missing 'habits' field"
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assert isinstance(data['habits'], list), "'habits' field must be an array"
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print("✓ Response contains 'habits' array")
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# Check for lastUpdated timestamp
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assert 'lastUpdated' in data, "Response missing 'lastUpdated' field"
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print("✓ Response contains 'lastUpdated' field")
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def test_habits_lastupdated_is_iso():
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"""Test that lastUpdated is a valid ISO timestamp."""
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print("Testing lastUpdated is valid ISO timestamp...")
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data = test_habits_response_is_json()
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last_updated = data.get('lastUpdated')
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assert last_updated, "lastUpdated field is empty"
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try:
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# Try to parse as ISO datetime
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dt = datetime.fromisoformat(last_updated.replace('Z', '+00:00'))
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print(f"✓ lastUpdated is valid ISO timestamp: {last_updated}")
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except (ValueError, AttributeError) as e:
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raise AssertionError(f"lastUpdated is not a valid ISO timestamp: {e}")
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def test_empty_habits_returns_empty_array():
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"""Test that empty habits.json returns empty array, not error."""
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print("Testing empty habits file returns empty array...")
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# Backup original file
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backup = None
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if HABITS_FILE.exists():
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backup = HABITS_FILE.read_text()
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try:
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# Write empty habits file
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HABITS_FILE.write_text(json.dumps({
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'lastUpdated': datetime.now().isoformat(),
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'habits': []
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}))
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# Request habits
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response = urllib.request.urlopen(f'{API_BASE}/api/habits', timeout=5)
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data = json.loads(response.read().decode('utf-8'))
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assert data['habits'] == [], "Empty habits.json should return empty array"
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print("✓ Empty habits.json returns empty array (not error)")
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finally:
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# Restore backup
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if backup:
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HABITS_FILE.write_text(backup)
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def test_habits_with_data():
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"""Test that habits with data are returned correctly."""
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print("Testing habits with data are returned...")
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# Backup original file
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backup = None
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if HABITS_FILE.exists():
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backup = HABITS_FILE.read_text()
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try:
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# Write test habits
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test_data = {
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'lastUpdated': '2026-02-10T10:00:00.000Z',
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'habits': [
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{
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'id': 'test-habit-1',
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'name': 'Bazin',
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'frequency': 'daily',
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'createdAt': '2026-02-10T10:00:00.000Z',
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'completions': ['2026-02-10T10:00:00.000Z']
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}
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]
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}
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HABITS_FILE.write_text(json.dumps(test_data, indent=2))
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# Request habits
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response = urllib.request.urlopen(f'{API_BASE}/api/habits', timeout=5)
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data = json.loads(response.read().decode('utf-8'))
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assert len(data['habits']) == 1, "Should return 1 habit"
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habit = data['habits'][0]
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assert habit['name'] == 'Bazin', f"Expected habit name 'Bazin', got '{habit['name']}'"
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assert habit['frequency'] == 'daily', f"Expected frequency 'daily', got '{habit['frequency']}'"
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print("✓ Habits with data are returned correctly")
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finally:
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# Restore backup
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if backup:
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HABITS_FILE.write_text(backup)
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def run_all_tests():
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"""Run all tests and report results."""
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print("=" * 60)
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print("Running GET /api/habits endpoint tests")
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print("=" * 60)
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print()
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tests = [
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test_habits_endpoint_exists,
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test_habits_response_is_json,
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test_habits_response_structure,
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test_habits_lastupdated_is_iso,
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test_empty_habits_returns_empty_array,
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test_habits_with_data,
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]
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passed = 0
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failed = 0
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for test in tests:
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try:
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test()
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passed += 1
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print()
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except AssertionError as e:
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print(f"✗ FAILED: {e}")
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print()
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failed += 1
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except Exception as e:
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print(f"✗ ERROR: {e}")
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print()
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failed += 1
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print("=" * 60)
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print(f"Results: {passed} passed, {failed} failed")
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print("=" * 60)
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return failed == 0
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if __name__ == '__main__':
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import sys
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# Check if API server is running
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try:
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urllib.request.urlopen(f'{API_BASE}/api/status', timeout=2)
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except urllib.error.URLError:
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print("ERROR: API server is not running on localhost:8088")
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print("Start the server with: python3 dashboard/api.py")
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sys.exit(1)
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success = run_all_tests()
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sys.exit(0 if success else 1)
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