Karim shoair
287 lines
12 KiB
Python
287 lines
12 KiB
Python
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import pickle
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import unittest
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from scrapling import Adaptor
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from cssselect import SelectorError, SelectorSyntaxError
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class TestParser(unittest.TestCase):
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def setUp(self):
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self.html = '''
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<html>
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<head>
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<title>Complex Web Page</title>
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<style>
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.hidden { display: none; }
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</style>
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</head>
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<body>
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<header>
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<nav>
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<ul>
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<li><a href="#home">Home</a></li>
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<li><a href="#about">About</a></li>
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<li><a href="#contact">Contact</a></li>
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</ul>
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</nav>
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</header>
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<main>
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<section id="products" schema='{"jsonable": "data"}'>
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<h2>Products</h2>
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<div class="product-list">
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<article class="product" data-id="1">
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<h3>Product 1</h3>
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<p class="description">This is product 1</p>
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<span class="price">$10.99</span>
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<div class="hidden stock">In stock: 5</div>
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</article>
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<article class="product" data-id="2">
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<h3>Product 2</h3>
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<p class="description">This is product 2</p>
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<span class="price">$20.99</span>
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<div class="hidden stock">In stock: 3</div>
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</article>
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<article class="product" data-id="3">
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<h3>Product 3</h3>
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<p class="description">This is product 3</p>
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<span class="price">$15.99</span>
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<div class="hidden stock">Out of stock</div>
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</article>
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</div>
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</section>
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<section id="reviews">
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<h2>Customer Reviews</h2>
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<div class="review-list">
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<div class="review" data-rating="5">
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<p class="review-text">Great product!</p>
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<span class="reviewer">John Doe</span>
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</div>
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<div class="review" data-rating="4">
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<p class="review-text">Good value for money.</p>
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<span class="reviewer">Jane Smith</span>
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</div>
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</div>
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</section>
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</main>
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<footer>
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<p>© 2024 Our Company</p>
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</footer>
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<script id="page-data" type="application/json">
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{"lastUpdated": "2024-09-22T10:30:00Z", "totalProducts": 3}
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</script>
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</body>
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</html>
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'''
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self.page = Adaptor(self.html, auto_match=False, debug=False)
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def test_css_selector(self):
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"""Test Selecting elements with complex CSS selectors"""
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elements = self.page.css('main #products .product-list article.product')
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self.assertEqual(len(elements), 3)
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in_stock_products = self.page.css(
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'main #products .product-list article.product:not(:contains("Out of stock"))')
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self.assertEqual(len(in_stock_products), 2)
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def test_xpath_selector(self):
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"""Test Selecting elements with Complex XPath selectors"""
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reviews = self.page.xpath(
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'//section[@id="reviews"]//div[contains(@class, "review") and @data-rating >= 4]'
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)
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self.assertEqual(len(reviews), 2)
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high_priced_products = self.page.xpath(
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'//article[contains(@class, "product")]'
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'[number(translate(substring-after(.//span[@class="price"], "$"), ",", "")) > 15]'
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)
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self.assertEqual(len(high_priced_products), 2)
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def test_find_by_text(self):
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"""Test Selecting elements with Text matching"""
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stock_info = self.page.find_by_regex(r'In stock: \d+', first_match=False)
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self.assertEqual(len(stock_info), 2)
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stock_info = self.page.find_by_regex(r'In stock: \d+', first_match=True, case_sensitive=True)
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self.assertEqual(stock_info.text, 'In stock: 5')
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stock_info = self.page.find_by_text(r'In stock:', partial=True, first_match=False)
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self.assertEqual(len(stock_info), 2)
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out_of_stock = self.page.find_by_text('Out of stock', partial=False, first_match=False)
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self.assertEqual(len(out_of_stock), 1)
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def test_find_similar_elements(self):
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"""Test Finding similar elements of an element"""
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first_product = self.page.css_first('.product')
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similar_products = first_product.find_similar()
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self.assertEqual(len(similar_products), 2)
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first_review = self.page.find('div', class_='review')
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similar_high_rated_reviews = [
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review
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for review in first_review.find_similar()
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if int(review.attrib.get('data-rating', 0)) >= 4
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]
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self.assertEqual(len(similar_high_rated_reviews), 1)
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def test_expected_errors(self):
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"""Test errors that should raised if it does"""
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with self.assertRaises(ValueError):
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_ = Adaptor(auto_match=False)
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with self.assertRaises(TypeError):
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_ = Adaptor(root="ayo", auto_match=False)
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with self.assertRaises(TypeError):
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_ = Adaptor(text=1, auto_match=False)
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with self.assertRaises(TypeError):
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_ = Adaptor(body=1, auto_match=False)
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with self.assertRaises(ValueError):
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_ = Adaptor(self.html, storage=object, auto_match=True)
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def test_pickleable(self):
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"""Test that objects aren't pickleable"""
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table = self.page.css('.product-list')[0]
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with self.assertRaises(TypeError): # Adaptors
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pickle.dumps(table)
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with self.assertRaises(TypeError): # Adaptor
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pickle.dumps(table[0])
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def test_overridden(self):
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"""Test overridden functions"""
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table = self.page.css('.product-list')[0]
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self.assertTrue(issubclass(type(table.__str__()), str))
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self.assertTrue(issubclass(type(table.__repr__()), str))
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self.assertTrue(issubclass(type(table.attrib.__str__()), str))
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self.assertTrue(issubclass(type(table.attrib.__repr__()), str))
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def test_bad_selector(self):
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"""Test object can handle bad selector"""
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with self.assertRaises((SelectorError, SelectorSyntaxError,)):
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self.page.css('4 ayo')
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with self.assertRaises((SelectorError, SelectorSyntaxError,)):
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self.page.xpath('4 ayo')
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def test_selectors_generation(self):
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"""Try to create selectors for all elements in the page"""
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def _traverse(element: Adaptor):
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self.assertTrue(type(element.generate_css_selector) is str)
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self.assertTrue(type(element.generate_xpath_selector) is str)
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for branch in element.children:
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_traverse(branch)
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_traverse(self.page)
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def test_getting_all_text(self):
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"""Test getting all text"""
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self.assertNotEqual(self.page.get_all_text(), '')
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def test_element_navigation(self):
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"""Test moving in the page from selected element"""
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table = self.page.css('.product-list')[0]
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self.assertIsNot(table.path, [])
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self.assertNotEqual(table.html_content, '')
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self.assertNotEqual(table.prettify(), '')
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parent = table.parent
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self.assertEqual(parent.attrib['id'], 'products')
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children = table.children
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self.assertEqual(len(children), 3)
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parent_siblings = parent.siblings
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self.assertEqual(len(parent_siblings), 1)
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child = table.find({'data-id': "1"})
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next_element = child.next
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self.assertEqual(next_element.attrib['data-id'], '2')
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prev_element = next_element.previous
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self.assertEqual(prev_element.tag, child.tag)
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all_prices = self.page.css('.price')
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products_with_prices = [
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price.find_ancestor(lambda p: p.has_class('product'))
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for price in all_prices
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]
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self.assertEqual(len(products_with_prices), 3)
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def test_empty_return(self):
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"""Test cases where functions shouldn't have results"""
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test_html = """
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<html>
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<span id="a"><a></a><!--comment--></span>
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<span id="b"><!--comment--><a></a></span>
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</html>"""
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soup = Adaptor(test_html, auto_match=False, keep_comments=False)
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html_tag = soup.css('html')[0]
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self.assertEqual(html_tag.path, [])
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self.assertEqual(html_tag.siblings, [])
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self.assertEqual(html_tag.parent, None)
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self.assertEqual(html_tag.find_ancestor(lambda e: e), None)
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self.assertEqual(soup.css('#a a')[0].next, None)
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self.assertEqual(soup.css('#b a')[0].previous, None)
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def test_text_to_json(self):
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"""Test converting text to json"""
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script_content = self.page.css('#page-data::text')[0]
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self.assertTrue(issubclass(type(script_content.sort()), str))
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page_data = script_content.json()
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self.assertEqual(page_data['totalProducts'], 3)
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self.assertTrue('lastUpdated' in page_data)
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def test_regex_on_text(self):
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"""Test doing regex on a selected text"""
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element = self.page.css('[data-id="1"] .price')[0]
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match = element.re_first(r'[\.\d]+')
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self.assertEqual(match, '10.99')
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match = element.text.re(r'(\d+)', replace_entities=False)
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self.assertEqual(len(match), 2)
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def test_attribute_operations(self):
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"""Test operations on elements attributes"""
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products = self.page.css('.product')
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product_ids = [product.attrib['data-id'] for product in products]
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self.assertEqual(product_ids, ['1', '2', '3'])
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self.assertTrue('data-id' in products[0].attrib)
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reviews = self.page.css('.review')
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review_ratings = [int(review.attrib['data-rating']) for review in reviews]
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self.assertEqual(sum(review_ratings) / len(review_ratings), 4.5)
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key_value = list(products[0].attrib.search_values('1', partial=False))
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self.assertEqual(list(key_value[0].keys()), ['data-id'])
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key_value = list(products[0].attrib.search_values('1', partial=True))
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self.assertEqual(list(key_value[0].keys()), ['data-id'])
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attr_json = self.page.css_first('#products').attrib['schema'].json()
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self.assertEqual(attr_json, {'jsonable': 'data'})
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self.assertEqual(type(self.page.css('#products')[0].attrib.json_string), bytes)
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def test_performance(self):
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"""Test parsing and selecting speed"""
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import time
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large_html = '<html><body>' + '<div class="item">' * 5000 + '</div>' * 5000 + '</body></html>'
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start_time = time.time()
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parsed = Adaptor(large_html, auto_match=False, debug=False)
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elements = parsed.css('.item')
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end_time = time.time()
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self.assertEqual(len(elements), 5000)
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# Converting 5000 elements to a class and doing operations on them will take time
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# Based on my tests with 100 runs, 1 loop each Scrapling (given the extra work/features) takes 10.4ms on average
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self.assertLess(end_time - start_time, 0.5) # Locally I test on 0.1 but on GitHub actions with browsers and threading sometimes closing adds fractions of seconds
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# Use `coverage run -m unittest --verbose tests/test_parser_functions.py` instead for the coverage report
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# if __name__ == '__main__':
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# unittest.main(verbosity=2)
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