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import json
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import os
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from os.path import join as pjoin
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import unittest
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from IPython.testing.decorators import onlyif
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from IPython.utils.tempdir import TemporaryDirectory
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from IPython.kernel import kernelspec
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sample_kernel_json = {'argv':['cat', '{connection_file}'],
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'display_name':'Test kernel',
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'language':'bash',
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}
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class KernelSpecTests(unittest.TestCase):
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def setUp(self):
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td = TemporaryDirectory()
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self.addCleanup(td.cleanup)
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self.sample_kernel_dir = pjoin(td.name, 'kernels', 'Sample')
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os.makedirs(self.sample_kernel_dir)
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json_file = pjoin(self.sample_kernel_dir, 'kernel.json')
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with open(json_file, 'w') as f:
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json.dump(sample_kernel_json, f)
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self.ksm = kernelspec.KernelSpecManager(ipython_dir=td.name)
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td2 = TemporaryDirectory()
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self.addCleanup(td2.cleanup)
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self.installable_kernel = td2.name
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with open(pjoin(self.installable_kernel, 'kernel.json'), 'w') as f:
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json.dump(sample_kernel_json, f)
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def test_find_kernel_specs(self):
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kernels = self.ksm.find_kernel_specs()
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self.assertEqual(kernels['sample'], self.sample_kernel_dir)
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def test_get_kernel_spec(self):
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ks = self.ksm.get_kernel_spec('SAMPLE') # Case insensitive
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self.assertEqual(ks.resource_dir, self.sample_kernel_dir)
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self.assertEqual(ks.argv, sample_kernel_json['argv'])
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self.assertEqual(ks.display_name, sample_kernel_json['display_name'])
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self.assertEqual(ks.language, sample_kernel_json['language'])
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self.assertEqual(ks.codemirror_mode, sample_kernel_json['language'])
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self.assertEqual(ks.env, {})
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def test_install_kernel_spec(self):
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self.ksm.install_kernel_spec(self.installable_kernel,
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kernel_name='tstinstalled')
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self.assertIn('tstinstalled', self.ksm.find_kernel_specs())
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with self.assertRaises(OSError):
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self.ksm.install_kernel_spec(self.installable_kernel,
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kernel_name='tstinstalled')
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# Smoketest that this succeeds
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self.ksm.install_kernel_spec(self.installable_kernel,
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kernel_name='tstinstalled',
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replace=True)
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@onlyif(os.name != 'nt' and not os.access('/usr/share', os.W_OK), "needs Unix system without root privileges")
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def test_cant_install_kernel_spec(self):
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with self.assertRaises(OSError):
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self.ksm.install_kernel_spec(self.installable_kernel,
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kernel_name='tstinstalled',
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system=True)
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