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Add support for nesting ampersand (#269)
* Add support for nesting ampersand When used outside the context of nesting, ampersand is treated as the scoping root. * Update copyright and document stuff
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| Original file line number | Diff line number | Diff line change |
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| """Test CSS introduced by Nesting level 1.""" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| """Test ampersand selectors.""" | ||
| from .. import util | ||
| import soupsieve as sv | ||
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| class TestAmp(util.TestCase): | ||
| """Test scope selectors.""" | ||
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| MARKUP = """ | ||
| <html id="root"> | ||
| <head> | ||
| </head> | ||
| <body> | ||
| <div id="div"> | ||
| <p id="0" class="somewordshere">Some text <span id="1"> in a paragraph</span>.</p> | ||
| <a id="2" href="http://google.com">Link</a> | ||
| <span id="3" class="herewords">Direct child</span> | ||
| <pre id="pre" class="wordshere"> | ||
| <span id="4">Child 1</span> | ||
| <span id="5">Child 2</span> | ||
| <span id="6">Child 3</span> | ||
| </pre> | ||
| </div> | ||
| </body> | ||
| </html> | ||
| """ | ||
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| def test_amp_is_root(self): | ||
| """Test ampersand is the root when the a specific element is not the target of the select call.""" | ||
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| # Scope is root when applied to a document node | ||
| self.assert_selector( | ||
| self.MARKUP, | ||
| "&", | ||
| ["root"], | ||
| flags=util.HTML | ||
| ) | ||
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| self.assert_selector( | ||
| self.MARKUP, | ||
| "& > body > div", | ||
| ["div"], | ||
| flags=util.HTML | ||
| ) | ||
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| def test_amp_cannot_select_target(self): | ||
| """Test that ampersand, the element which scope is called on, cannot be selected.""" | ||
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| for parser in util.available_parsers( | ||
| 'html.parser', 'lxml', 'html5lib', 'xml'): | ||
| soup = self.soup(self.MARKUP, parser) | ||
| el = soup.html | ||
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| # Scope is the element we are applying the select to, and that element is never returned | ||
| self.assertTrue(len(sv.select('&', el, flags=sv.DEBUG)) == 0) | ||
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| def test_amp_is_select_target(self): | ||
| """Test that ampersand is the element which scope is called on.""" | ||
|
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| for parser in util.available_parsers( | ||
| 'html.parser', 'lxml', 'html5lib', 'xml'): | ||
| soup = self.soup(self.MARKUP, parser) | ||
| el = soup.html | ||
|
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| # Scope here means the current element under select | ||
| ids = [el.attrs['id'] for el in sv.select('& div', el, flags=sv.DEBUG)] | ||
| self.assertEqual(sorted(ids), sorted(['div'])) | ||
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| el = soup.body | ||
| ids = [el.attrs['id'] for el in sv.select('& div', el, flags=sv.DEBUG)] | ||
| self.assertEqual(sorted(ids), sorted(['div'])) | ||
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| # `div` is the current element under select, and it has no `div` elements. | ||
| el = soup.div | ||
| ids = [el.attrs['id'] for el in sv.select('& div', el, flags=sv.DEBUG)] | ||
| self.assertEqual(sorted(ids), sorted([])) | ||
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| # `div` does have an element with the class `.wordshere` | ||
| ids = [el.attrs['id'] for el in sv.select('& .wordshere', el, flags=sv.DEBUG)] | ||
| self.assertEqual(sorted(ids), sorted(['pre'])) |