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"""Tests for the HighlightMagics preprocessor"""
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from .base import PreprocessorTestsBase
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from ..highlightmagics import HighlightMagicsPreprocessor
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class TestHighlightMagics(PreprocessorTestsBase):
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"""Contains test functions for highlightmagics.py"""
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def build_preprocessor(self):
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"""Make an instance of a preprocessor"""
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preprocessor = HighlightMagicsPreprocessor()
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preprocessor.enabled = True
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return preprocessor
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def test_constructor(self):
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"""Can a HighlightMagicsPreprocessor be constructed?"""
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self.build_preprocessor()
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def test_tagging(self):
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"""Test the HighlightMagicsPreprocessor tagging"""
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nb = self.build_notebook()
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res = self.build_resources()
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preprocessor = self.build_preprocessor()
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nb.cells[0].source = """%%R -i x,y -o XYcoef
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lm.fit <- lm(y~x)
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par(mfrow=c(2,2))
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print(summary(lm.fit))
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plot(lm.fit)
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XYcoef <- coef(lm.fit)"""
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nb, res = preprocessor(nb, res)
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assert('magics_language' in nb.cells[0]['metadata'])
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self.assertEqual(nb.cells[0]['metadata']['magics_language'], 'r')
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def test_no_false_positive(self):
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"""Test that HighlightMagicsPreprocessor does not tag false positives"""
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nb = self.build_notebook()
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res = self.build_resources()
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preprocessor = self.build_preprocessor()
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nb.cells[0].source = """# this should not be detected
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print(\"""
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%%R -i x, y
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\""")"""
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nb, res = preprocessor(nb, res)
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assert('magics_language' not in nb.cells[0]['metadata'])
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