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CameraTests.test_saveSnapshot()   A

Complexity

Conditions 1

Size

Total Lines 9

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 1
c 1
b 0
f 0
dl 0
loc 9
rs 9.6666
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from unittest import TestCase
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from tests.ditest import DependencyInjectionTestBase
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from mock import Mock, patch, sentinel
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import numpy
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class CameraTests(DependencyInjectionTestBase):
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    def test_saveSnapshot(self):
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        from niprov.camera import Camera
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        camera = Camera(self.dependencies)
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        camera.takeSnapshot = Mock()
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        target = Mock()
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        camera.saveSnapshot(target, for_=sentinel.object)
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        newPicture = self.pictureCache.new()
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        camera.takeSnapshot.assert_called_with(target, on=newPicture)
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        self.pictureCache.keep.assert_called_with(newPicture, sentinel.object)
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    def test_SaveSnapshot_doesnt_save_if_takeSnapshot_failed(self):
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        from niprov.camera import Camera
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        camera = Camera(self.dependencies)
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        camera.takeSnapshot = Mock()
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        camera.takeSnapshot.return_value = False
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        target = Mock()
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        camera.saveSnapshot(target, for_=sentinel.object)
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        self.assertFalse(self.pictureCache.keep.called)
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    def test_If_no_matplotlib_installed_takeSnapshot_returns_false(self):
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        from niprov.camera import Camera
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        camera = Camera(self.dependencies)
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        self.libs.hasDependency.return_value = False
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        self.libs.pyplot = None
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        self.assertFalse(camera.takeSnapshot(numpy.zeros([3,3,3]), Mock()))
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    def test_If_exception_during_plotting_returns_False(self):
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        from niprov.camera import Camera
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        camera = Camera(self.dependencies)
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        self.libs.pyplot.subplots.side_effect = ValueError
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        self.assertFalse(camera.takeSnapshot(numpy.zeros([3,3,3]), Mock()))
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    def test_If_no_exception_during_plotting_returns_True(self):
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        from niprov.camera import Camera
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        camera = Camera(self.dependencies)
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        self.libs.pyplot.subplots.return_value = [Mock(), [Mock()]*3]
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        self.assertTrue(camera.takeSnapshot(numpy.zeros([3,3,3]), Mock()))
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