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Add unit tests for QgsRasterBandComboBox
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| # -*- coding: utf-8 -*- | ||
| """QGIS Unit tests for QgsRasterBandComboBox. | ||
| .. note:: This program is free software; you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation; either version 2 of the License, or | ||
| (at your option) any later version. | ||
| """ | ||
| __author__ = 'Nyall Dawson' | ||
| __date__ = '09/05/2017' | ||
| __copyright__ = 'Copyright 2017, The QGIS Project' | ||
| # This will get replaced with a git SHA1 when you do a git archive | ||
| __revision__ = '$Format:%H$' | ||
|
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| import qgis # NOQA | ||
| import os | ||
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| from qgis.core import QgsRasterLayer | ||
| from qgis.gui import QgsRasterBandComboBox | ||
| from qgis.testing import start_app, unittest | ||
| from qgis.PyQt.QtCore import QFileInfo | ||
| from qgis.PyQt.QtTest import QSignalSpy | ||
| from utilities import unitTestDataPath | ||
|
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| start_app() | ||
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| class TestQgsRasterBandComboBox(unittest.TestCase): | ||
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| def testNoLayer(self): | ||
| """ | ||
| Test widget with no layer | ||
| """ | ||
|
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| combo = QgsRasterBandComboBox() | ||
| self.assertFalse(combo.layer()) | ||
| self.assertEqual(combo.currentBand(), -1) | ||
| self.assertFalse(combo.isEnabled()) | ||
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| combo.setShowNotSetOption(True) | ||
| self.assertEqual(combo.currentBand(), -1) | ||
| self.assertFalse(combo.isEnabled()) | ||
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| combo.setBand(11111) | ||
| self.assertEqual(combo.currentBand(), -1) | ||
| combo.setBand(-11111) | ||
| self.assertEqual(combo.currentBand(), -1) | ||
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| def testOneBandRaster(self): | ||
| path = os.path.join(unitTestDataPath('raster'), | ||
| 'band1_float32_noct_epsg4326.tif') | ||
| info = QFileInfo(path) | ||
| base_name = info.baseName() | ||
| layer = QgsRasterLayer(path, base_name) | ||
| self.assertTrue(layer) | ||
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| combo = QgsRasterBandComboBox() | ||
| combo.setLayer(layer) | ||
| self.assertEqual(combo.layer(), layer) | ||
| self.assertEqual(combo.currentBand(), 1) | ||
| # only one choice, should be disabled | ||
| self.assertEqual(combo.count(), 1) | ||
| self.assertFalse(combo.isEnabled()) | ||
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| combo.setShowNotSetOption(True) | ||
| self.assertEqual(combo.currentBand(), 1) | ||
| self.assertEqual(combo.count(), 2) | ||
| self.assertTrue(combo.isEnabled()) | ||
| combo.setBand(-1) | ||
| self.assertEqual(combo.currentBand(), -1) | ||
| combo.setBand(1) | ||
| self.assertEqual(combo.currentBand(), 1) | ||
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| combo.setShowNotSetOption(False) | ||
| self.assertEqual(combo.currentBand(), 1) | ||
| self.assertEqual(combo.count(), 1) | ||
| self.assertFalse(combo.isEnabled()) | ||
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| def testMultiBandRaster(self): | ||
| path = os.path.join(unitTestDataPath('raster'), | ||
| 'band3_float32_noct_epsg4326.tif') | ||
| info = QFileInfo(path) | ||
| base_name = info.baseName() | ||
| layer = QgsRasterLayer(path, base_name) | ||
| self.assertTrue(layer) | ||
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| combo = QgsRasterBandComboBox() | ||
| combo.setLayer(layer) | ||
| self.assertEqual(combo.layer(), layer) | ||
| self.assertEqual(combo.currentBand(), 1) | ||
| self.assertEqual(combo.count(), 3) | ||
| self.assertTrue(combo.isEnabled()) | ||
| combo.setBand(2) | ||
| self.assertEqual(combo.currentBand(), 2) | ||
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| combo.setShowNotSetOption(True) | ||
| self.assertEqual(combo.currentBand(), 2) | ||
| self.assertEqual(combo.count(), 4) | ||
| self.assertTrue(combo.isEnabled()) | ||
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| combo.setShowNotSetOption(False) | ||
| self.assertEqual(combo.currentBand(), 2) | ||
| self.assertEqual(combo.count(), 3) | ||
| self.assertTrue(combo.isEnabled()) | ||
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| def testSignals(self): | ||
| path = os.path.join(unitTestDataPath('raster'), | ||
| 'band3_float32_noct_epsg4326.tif') | ||
| info = QFileInfo(path) | ||
| base_name = info.baseName() | ||
| layer = QgsRasterLayer(path, base_name) | ||
| self.assertTrue(layer) | ||
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| combo = QgsRasterBandComboBox() | ||
| combo.setLayer(layer) | ||
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| signal_spy = QSignalSpy(combo.bandChanged) | ||
| combo.setBand(2) | ||
| self.assertEqual(len(signal_spy), 1) | ||
| self.assertEqual(signal_spy[0][0], 2) | ||
| combo.setBand(3) | ||
| self.assertEqual(len(signal_spy), 2) | ||
| self.assertEqual(signal_spy[1][0], 3) | ||
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| if __name__ == '__main__': | ||
| unittest.main() |