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