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209 lines
6.5 KiB
209 lines
6.5 KiB
"""Tests for the HTMLSanitize preprocessor"""
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from .base import PreprocessorTestsBase
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from ..sanitize import SanitizeHTML
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from nbformat import v4 as nbformat
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class TestSanitizer(PreprocessorTestsBase):
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"""Contains test functions for sanitize.py"""
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maxDiff = None
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def build_preprocessor(self):
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"""Make an instance of a preprocessor"""
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preprocessor = SanitizeHTML()
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preprocessor.enabled = True
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return preprocessor
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def preprocess_source(self, cell_type, source, preprocessor):
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nb = self.build_notebook()
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res = self.build_resources()
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nb.cells[0].cell_type = cell_type
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nb.cells[0].source = source
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nb, res = preprocessor(nb, res)
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return nb.cells[0].source
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def test_constructor(self):
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"""Can a SanitizeHTML be constructed?"""
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self.build_preprocessor()
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def test_svg_handling(self):
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"""
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Test to make sure that svgs are handled 'properly'
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We only allow <img> tags (via markdown syntax) and not all the other ways
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to embed svg: <object>, <embed>, <iframe> nor inline <svg>
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"""
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preprocessor = self.build_preprocessor()
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preprocessor.strip = True
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self.assertEqual(
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self.preprocess_source(
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'markdown',
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"""
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<object data="something.svg" type="image/svg+xml"></object>
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<embed data="something.svg" type="image/svg+xml" />
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<iframe src="http://example.com/something.svg"></iframe>
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 68 65">
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<path fill="#1A374D" d="M42 27v-20c0-3.7-3.3-7-7-7s-7 3.3-7 7v21l12 15-7 15.7c14.5 13.9 35 2.8 35-13.7 0-13.3-13.4-21.8-26-18zm6 25c-3.9 0-7-3.1-7-7s3.1-7 7-7 7 3.1 7 7-3.1 7-7 7z"/>
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<path d="M14 27v-20c0-3.7-3.3-7-7-7s-7 3.3-7 7v41c0 8.2 9.2 17 20 17s20-9.2 20-20c0-13.3-13.4-21.8-26-18zm6 25c-3.9 0-7-3.1-7-7s3.1-7 7-7 7 3.1 7 7-3.1 7-7 7z"/>
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</svg>
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""",
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preprocessor
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).strip(),
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"""
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""".strip(),
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)
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def test_tag_whitelist_stripping(self):
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"""Test tag whitelisting + stripping out offending tags"""
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preprocessor = self.build_preprocessor()
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preprocessor.strip = True
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self.assertEqual(
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self.preprocess_source(
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'markdown',
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'_A_ <em>few</em> <script>tags</script>',
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preprocessor
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),
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'_A_ <em>few</em> tags'
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)
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def test_comment_stripping(self):
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"""Test HTML comment stripping"""
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preprocessor = self.build_preprocessor()
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self.assertEqual(
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self.preprocess_source(
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'markdown',
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'_A_ <em>few</em> <!-- tags -->',
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preprocessor
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),
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'_A_ <em>few</em> '
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)
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preprocessor.strip_comments = False
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self.assertEqual(
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self.preprocess_source(
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'markdown',
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'_A_ <em>few</em> <!-- tags -->',
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preprocessor
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),
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'_A_ <em>few</em> <!-- tags -->'
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)
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def test_attributes_whitelist(self):
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"""Test style"""
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preprocessor = self.build_preprocessor()
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preprocessor.attributes['a'] = ['href', 'title']
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self.assertEqual(
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self.preprocess_source(
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'markdown',
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'<a href="link" rel="nofollow">Hi</a>',
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preprocessor
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),
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'<a href="link">Hi</a>'
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)
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def test_style_whitelist(self):
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"""Test style"""
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preprocessor = self.build_preprocessor()
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if '*' in preprocessor.attributes:
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preprocessor.attributes['*'].append('style')
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else:
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preprocessor.attributes['*'] = ['style']
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preprocessor.styles = [
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'color',
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]
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self.assertEqual(
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self.preprocess_source(
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'markdown',
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'_A_ <em style="color: blue; background-color: pink">'
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'few</em> <script>tags</script>',
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preprocessor
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),
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'_A_ <em style="color: blue;">few</em> '
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'<script>tags</script>'
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)
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def test_tag_passthrough(self):
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"""Test passing through raw output"""
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preprocessor = self.build_preprocessor()
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self.assertEqual(
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self.preprocess_source(
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'raw',
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'_A_ <em>few</em> <script>tags</script>',
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preprocessor
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),
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'_A_ <em>few</em> <script>tags</script>'
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)
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def test_output_sanitizing(self):
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"""Test that outputs are also sanitized properly"""
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preprocessor = self.build_preprocessor()
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nb = self.build_notebook()
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outputs = [
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nbformat.new_output("display_data", data={
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'text/plain': 'b',
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'text/html': '<script>more evil</script>',
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'text/css': '<style> * {display:none}</style>'
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}),
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nbformat.new_output('stream', name='stdout', text="wat"),
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nbformat.new_output('stream', name='stdout', text="<script>Evil tag</script>")
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]
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nb.cells[0].outputs = outputs
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res = self.build_resources()
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nb, res = preprocessor(nb, res)
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expected_output = [
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{
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'data': {
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'text/html': '<script>more evil</script>',
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'text/plain': 'b'
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},
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'metadata': {},
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'output_type': 'display_data',
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},
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{
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'name': 'stdout',
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'output_type': 'stream',
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'text': 'wat'
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},
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{
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'name': 'stdout',
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'output_type':
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'stream', 'text': '<script>Evil tag</script>'
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}
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]
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self.assertEqual(nb.cells[0].outputs, expected_output)
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def test_tag_whitelist(self):
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"""Test tag whitelisting"""
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preprocessor = self.build_preprocessor()
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self.assertEqual(
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self.preprocess_source(
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'markdown',
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'_A_ <em>few</em> <script>tags</script>',
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preprocessor
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),
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'_A_ <em>few</em> <script>tags</script>'
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)
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