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import unittest
from recipe_scrapers._grouping_utils import best_match, score_sentence_similarity
class TestUtils(unittest.TestCase):
def test_score_exact_match(self):
self.assertEqual(
1.0, score_sentence_similarity("¼ cup maple syrup", "¼ cup maple syrup")
)
def test_score_no_match(self):
self.assertEqual(0.0, score_sentence_similarity("a", "4 sprig fresh thyme"))
self.assertEqual(0.0, score_sentence_similarity("4 sprig fresh thyme", ""))
def test_score_special_characters(self):
self.assertEqual(0.0, score_sentence_similarity("!@#$%^", "*&^%$#"))
def test_score_numerical_strings(self):
self.assertEqual(0.8, score_sentence_similarity("123", "1234"))
def test_score_similar_but_not_exact(self):
self.assertAlmostEqual(
0.8888888888888888,
score_sentence_similarity("16oz firm tofu", "16 oz firm tofu"),
places=2,
)
def test_best_match_exact(self):
target_strings = [
"¼ cup vegan mayonnaise",
"apple cider vinegar",
"¼ tsp salt",
"1 cup shredded red cabbage",
]
self.assertEqual(
"¼ cup vegan mayonnaise",
best_match("¼ cup vegan mayonnaise", target_strings),
)
def test_best_match_closest(self):
target_strings = [
"apple cider vinegar",
"¼ tsp salt",
"1 cup shredded red cabbage",
"5 large soft tortilla",
]
self.assertEqual(
"5 large soft tortilla", best_match("large tortilla", target_strings)
)
def test_best_match_singular_plural(self):
target_strings = ["2 medium tomato", "½ head butter lettuce", "1 carrot"]
self.assertEqual("2 medium tomato", best_match("tomato", target_strings))
def test_best_match_with_no_exact_match(self):
target_strings = ["¼ cup vegan mayonnaise", "apple cider vinegar", "¼ tsp salt"]
self.assertNotEqual(
"¼ cup maple syrup", best_match("¼ cup maple syrup", target_strings)
)
def test_score_with_empty_string(self):
self.assertEqual(0.0, score_sentence_similarity("", "anything here"))
def test_best_match_raises_error_with_empty_list(self):
with self.assertRaises(ValueError):
best_match("any string", [])
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