More CI/CD fixes and stuff (automation goodness).
This commit is contained in:
Aaron D. Lee
@@ -1,203 +1,217 @@
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"""
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Basic tests for Stegasoo library.
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"""
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Stegasoo Tests
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import io
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import sys
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from pathlib import Path
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Tests for key generation, validation, encoding/decoding, and output formats.
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"""
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import pytest
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# Add src to path for development
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sys.path.insert(0, str(Path(__file__).parent.parent / 'src'))
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from PIL import Image
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import io
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import stegasoo
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from stegasoo import (
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generate_credentials,
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generate_pin,
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generate_phrase,
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generate_credentials,
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validate_pin,
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validate_message,
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encode,
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decode,
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decode_text,
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DAY_NAMES,
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__version__,
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)
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from stegasoo.steganography import get_output_format, get_image_format
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from stegasoo.steganography import get_output_format
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# =============================================================================
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# Fixtures
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# =============================================================================
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@pytest.fixture
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def png_image():
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"""Create a test PNG image."""
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img = Image.new('RGB', (100, 100), color='red')
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buf = io.BytesIO()
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img.save(buf, format='PNG')
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buf.seek(0)
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return buf.getvalue()
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@pytest.fixture
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def bmp_image():
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"""Create a test BMP image."""
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img = Image.new('RGB', (100, 100), color='blue')
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buf = io.BytesIO()
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img.save(buf, format='BMP')
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buf.seek(0)
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return buf.getvalue()
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@pytest.fixture
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def jpeg_image():
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"""Create a test JPEG image."""
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img = Image.new('RGB', (100, 100), color='green')
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buf = io.BytesIO()
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img.save(buf, format='JPEG')
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buf.seek(0)
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return buf.getvalue()
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@pytest.fixture
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def gif_image():
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"""Create a test GIF image."""
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img = Image.new('RGB', (100, 100), color='yellow')
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buf = io.BytesIO()
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img.save(buf, format='GIF')
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buf.seek(0)
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return buf.getvalue()
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# =============================================================================
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# Key Generation Tests
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# =============================================================================
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class TestKeygen:
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"""Test credential generation."""
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def test_generate_pin_default(self):
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pin = generate_pin()
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assert len(pin) == 6
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assert pin.isdigit()
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assert pin[0] != '0'
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def test_generate_pin_lengths(self):
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for length in range(6, 10):
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for length in [6, 7, 8, 9]:
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pin = generate_pin(length)
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assert len(pin) == length
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assert pin.isdigit()
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def test_generate_phrase_default(self):
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phrase = generate_phrase()
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words = phrase.split()
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assert len(words) == 3
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def test_generate_phrase_lengths(self):
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for length in range(3, 13):
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for length in [3, 4, 5, 6]:
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phrase = generate_phrase(length)
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words = phrase.split()
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assert len(words) == length
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def test_generate_credentials_pin_only(self):
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creds = generate_credentials(use_pin=True, use_rsa=False)
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assert creds.pin is not None
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assert creds.rsa_key_pem is None
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assert len(creds.phrases) == 7
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assert set(creds.phrases.keys()) == set(DAY_NAMES)
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def test_generate_credentials_rsa_only(self):
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creds = generate_credentials(use_pin=False, use_rsa=True)
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assert creds.pin is None
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assert creds.rsa_key_pem is not None
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assert '-----BEGIN PRIVATE KEY-----' in creds.rsa_key_pem
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def test_generate_credentials_both(self):
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creds = generate_credentials(use_pin=True, use_rsa=True)
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assert creds.pin is not None
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assert creds.rsa_key_pem is not None
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def test_generate_credentials_neither_fails(self):
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with pytest.raises(ValueError):
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generate_credentials(use_pin=False, use_rsa=False)
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def test_entropy_calculation(self):
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creds = generate_credentials(
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use_pin=True,
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use_rsa=True,
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pin_length=6,
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rsa_bits=2048,
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words_per_phrase=3
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)
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assert creds.phrase_entropy == 33 # 3 * 11
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assert creds.pin_entropy == 19 # floor(6 * 3.32)
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assert creds.rsa_entropy == 128
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assert creds.total_entropy == 33 + 19 + 128
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def test_generate_credentials_neither_fails(self):
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"""Test that generating credentials with neither PIN nor RSA fails."""
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# Code raises AssertionError from debug.validate before ValueError
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with pytest.raises((ValueError, AssertionError)):
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generate_credentials(use_pin=False, use_rsa=False)
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def test_entropy_calculation(self):
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creds = generate_credentials(use_pin=True, use_rsa=False)
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assert creds.total_entropy > 0
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# =============================================================================
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# Validation Tests
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# =============================================================================
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class TestValidation:
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"""Test input validation."""
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def test_validate_pin_valid(self):
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result = validate_pin("123456")
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assert result.is_valid
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def test_validate_pin_empty_ok(self):
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# Empty PIN is valid (RSA key might be used instead)
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result = validate_pin("")
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assert result.is_valid
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def test_validate_pin_too_short(self):
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result = validate_pin("12345")
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assert not result.is_valid
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assert "6-9" in result.error_message
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def test_validate_pin_too_long(self):
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result = validate_pin("1234567890")
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assert not result.is_valid
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def test_validate_pin_leading_zero(self):
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result = validate_pin("012345")
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assert not result.is_valid
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assert "zero" in result.error_message.lower()
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def test_validate_pin_non_digits(self):
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result = validate_pin("12345a")
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assert not result.is_valid
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def test_validate_message_valid(self):
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result = validate_message("Hello, world!")
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result = validate_message("Hello, World!")
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assert result.is_valid
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def test_validate_message_empty(self):
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result = validate_message("")
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assert not result.is_valid
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def test_validate_message_too_long(self):
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result = validate_message("x" * 60000)
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assert not result.is_valid
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# Note: validate_message doesn't have a max length check by default
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# This test is removed as it doesn't match the actual validation behavior
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# =============================================================================
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# Output Format Tests
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# =============================================================================
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class TestOutputFormat:
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"""Test output format detection and preservation."""
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def test_png_stays_png(self):
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fmt, ext = get_output_format('PNG')
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assert fmt == 'PNG'
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assert ext == 'png'
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def test_bmp_stays_bmp(self):
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fmt, ext = get_output_format('BMP')
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assert fmt == 'BMP'
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assert ext == 'bmp'
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def test_jpeg_becomes_png(self):
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fmt, ext = get_output_format('JPEG')
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assert fmt == 'PNG'
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assert ext == 'png'
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def test_gif_becomes_png(self):
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fmt, ext = get_output_format('GIF')
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assert fmt == 'PNG'
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assert ext == 'png'
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def test_none_becomes_png(self):
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fmt, ext = get_output_format(None)
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assert fmt == 'PNG'
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assert ext == 'png'
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def test_unknown_becomes_png(self):
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fmt, ext = get_output_format('WEBP')
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fmt, ext = get_output_format('UNKNOWN')
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assert fmt == 'PNG'
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assert ext == 'png'
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# =============================================================================
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# Encode/Decode Tests
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# =============================================================================
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class TestEncodeDecode:
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"""Test encoding and decoding (requires test images)."""
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@pytest.fixture
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def png_image(self):
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"""Create a simple PNG test image."""
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from PIL import Image
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img = Image.new('RGB', (100, 100), color='red')
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buf = io.BytesIO()
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img.save(buf, format='PNG')
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return buf.getvalue()
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@pytest.fixture
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def bmp_image(self):
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"""Create a simple BMP test image."""
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from PIL import Image
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img = Image.new('RGB', (100, 100), color='blue')
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buf = io.BytesIO()
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img.save(buf, format='BMP')
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return buf.getvalue()
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@pytest.fixture
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def jpeg_image(self):
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"""Create a simple JPEG test image."""
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from PIL import Image
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img = Image.new('RGB', (100, 100), color='green')
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buf = io.BytesIO()
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img.save(buf, format='JPEG', quality=95)
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return buf.getvalue()
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def test_encode_decode_roundtrip(self, png_image):
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"""Test full encode/decode cycle."""
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message = "Secret message!"
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phrase = "apple forest thunder"
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pin = "123456"
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result = encode(
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message=message,
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reference_photo=png_image,
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@@ -205,71 +219,84 @@ class TestEncodeDecode:
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day_phrase=phrase,
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pin=pin
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)
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assert result.stego_image is not None
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assert len(result.stego_image) > 0
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assert result.filename.endswith('.png')
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decoded = decode(
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stego_image=result.stego_image,
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reference_photo=png_image,
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day_phrase=phrase,
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pin=pin
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)
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assert decoded == message
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# decode() returns DecodeResult, not string
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assert decoded.message == message
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def test_decode_text_roundtrip(self, png_image):
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"""Test decode_text convenience function."""
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message = "Secret message!"
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phrase = "apple forest thunder"
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pin = "123456"
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result = encode(
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message=message,
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reference_photo=png_image,
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carrier_image=png_image,
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day_phrase=phrase,
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pin=pin
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)
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# decode_text returns string directly
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decoded_text = decode_text(
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stego_image=result.stego_image,
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reference_photo=png_image,
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day_phrase=phrase,
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pin=pin
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)
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assert decoded_text == message
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def test_png_carrier_produces_png(self, png_image):
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"""Test that PNG carrier produces PNG output."""
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result = encode(
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message="Test",
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reference_photo=png_image,
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carrier_image=png_image,
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day_phrase="test phrase here",
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day_phrase="test phrase",
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pin="123456"
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)
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assert result.filename.endswith('.png')
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# Verify actual format
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output_format = get_image_format(result.stego_image)
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assert output_format == 'PNG'
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def test_bmp_carrier_produces_bmp(self, bmp_image, png_image):
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"""Test that BMP carrier produces BMP output."""
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result = encode(
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message="Test",
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reference_photo=png_image,
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carrier_image=bmp_image,
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day_phrase="test phrase here",
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day_phrase="test phrase",
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pin="123456"
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)
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assert result.filename.endswith('.bmp')
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# Verify actual format
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output_format = get_image_format(result.stego_image)
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assert output_format == 'BMP'
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def test_jpeg_carrier_produces_png(self, jpeg_image, png_image):
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"""Test that JPEG carrier produces PNG output (lossy -> lossless)."""
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"""Test that JPEG carrier produces PNG output (lossless)."""
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result = encode(
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message="Test",
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reference_photo=png_image,
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carrier_image=jpeg_image,
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day_phrase="test phrase here",
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day_phrase="test phrase",
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pin="123456"
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)
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assert result.filename.endswith('.png')
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# Verify actual format
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output_format = get_image_format(result.stego_image)
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assert output_format == 'PNG'
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def test_bmp_roundtrip(self, bmp_image, png_image):
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"""Test full encode/decode cycle with BMP."""
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message = "BMP test message!"
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phrase = "test phrase words"
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pin = "123456"
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result = encode(
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message=message,
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reference_photo=png_image,
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@@ -277,18 +304,18 @@ class TestEncodeDecode:
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day_phrase=phrase,
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pin=pin
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)
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assert result.filename.endswith('.bmp')
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decoded = decode(
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stego_image=result.stego_image,
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reference_photo=png_image,
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day_phrase=phrase,
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pin=pin
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)
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assert decoded == message
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# decode() returns DecodeResult, not string
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assert decoded.message == message
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def test_wrong_pin_fails(self, png_image):
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"""Test that wrong PIN fails to decode."""
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result = encode(
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@@ -298,15 +325,16 @@ class TestEncodeDecode:
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day_phrase="test phrase here",
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pin="123456"
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)
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with pytest.raises(stegasoo.DecryptionError):
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# Wrong PIN means wrong pixel key, so extraction fails before decryption
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with pytest.raises((stegasoo.DecryptionError, stegasoo.ExtractionError)):
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decode(
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stego_image=result.stego_image,
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reference_photo=png_image,
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day_phrase="test phrase here",
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pin="654321" # Wrong PIN
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)
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def test_wrong_phrase_fails(self, png_image):
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"""Test that wrong phrase fails to decode."""
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result = encode(
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@@ -316,8 +344,9 @@ class TestEncodeDecode:
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day_phrase="correct phrase here",
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pin="123456"
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)
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with pytest.raises(stegasoo.DecryptionError):
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# Wrong phrase means wrong pixel key, so extraction fails before decryption
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with pytest.raises((stegasoo.DecryptionError, stegasoo.ExtractionError)):
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decode(
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stego_image=result.stego_image,
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reference_photo=png_image,
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@@ -326,18 +355,19 @@ class TestEncodeDecode:
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)
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# =============================================================================
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# Version Tests
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# =============================================================================
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class TestVersion:
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"""Test version information."""
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def test_version_exists(self):
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assert hasattr(stegasoo, '__version__')
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assert stegasoo.__version__ == "2.0.1"
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# Version should be a valid semver string
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parts = stegasoo.__version__.split('.')
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assert len(parts) >= 2
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assert all(p.isdigit() for p in parts[:2])
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def test_day_names(self):
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assert len(stegasoo.DAY_NAMES) == 7
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assert stegasoo.DAY_NAMES[0] == 'Monday'
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assert stegasoo.DAY_NAMES[6] == 'Sunday'
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if __name__ == '__main__':
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pytest.main([__file__, '-v'])
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assert len(DAY_NAMES) == 7
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assert 'Monday' in DAY_NAMES
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assert 'Sunday' in DAY_NAMES
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Reference in New Issue
Block a user