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Add API to allow QgsScaleWidget to accept NULL values
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| # -*- coding: utf-8 -*- | ||
| """QGIS Unit tests for QgsScaleWidget | ||
| .. 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__ = '13/03/2019' | ||
| __copyright__ = 'Copyright 2019, 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 math | ||
| from qgis.PyQt.QtCore import Qt | ||
| from qgis.PyQt.QtTest import QSignalSpy | ||
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| from qgis.gui import QgsScaleWidget | ||
| from qgis.testing import start_app, unittest | ||
|
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| start_app() | ||
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| class TestQgsScaleWidget(unittest.TestCase): | ||
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| def testBasic(self): | ||
| w = QgsScaleWidget() | ||
| spy = QSignalSpy(w.scaleChanged) | ||
| w.setScaleString('1:2345') | ||
| self.assertEqual(w.scaleString(), '1:2,345') | ||
| self.assertEqual(w.scale(), 2345) | ||
| self.assertEqual(len(spy), 1) | ||
| self.assertEqual(spy[-1][0], 2345) | ||
|
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| w.setScaleString('0.02') | ||
| self.assertEqual(w.scaleString(), '1:50') | ||
| self.assertEqual(w.scale(), 50) | ||
| self.assertEqual(len(spy), 2) | ||
| self.assertEqual(spy[-1][0], 50) | ||
|
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| w.setScaleString('1:4,000') | ||
| self.assertEqual(w.scaleString(), '1:4,000') | ||
| self.assertEqual(w.scale(), 4000) | ||
| self.assertEqual(len(spy), 3) | ||
| self.assertEqual(spy[-1][0], 4000) | ||
|
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| def testNull(self): | ||
| w = QgsScaleWidget() | ||
|
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| w.setScale(50) | ||
| self.assertFalse(w.allowNull()) | ||
| w.clear() # no effect | ||
| self.assertEqual(w.scale(), 50.0) | ||
| self.assertFalse(w.isNull()) | ||
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| spy = QSignalSpy(w.scaleChanged) | ||
| w.setAllowNull(True) | ||
| self.assertTrue(w.allowNull()) | ||
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| w.setScaleString('') | ||
| self.assertEqual(len(spy), 1) | ||
| self.assertTrue(math.isnan(w.scale())) | ||
| self.assertTrue(math.isnan(spy[-1][0])) | ||
| self.assertTrue(w.isNull()) | ||
| w.setScaleString(" ") | ||
| self.assertTrue(math.isnan(w.scale())) | ||
| self.assertTrue(w.isNull()) | ||
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| w.setScaleString('0.02') | ||
| self.assertEqual(w.scale(), 50.0) | ||
| self.assertEqual(len(spy), 2) | ||
| self.assertEqual(spy[-1][0], 50.0) | ||
| self.assertFalse(w.isNull()) | ||
|
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| w.setScaleString('') | ||
| self.assertTrue(math.isnan(w.scale())) | ||
| self.assertEqual(len(spy), 3) | ||
| self.assertTrue(math.isnan(spy[-1][0])) | ||
| self.assertTrue(w.isNull()) | ||
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| w.setScaleString('0.02') | ||
| self.assertEqual(w.scale(), 50.0) | ||
| self.assertEqual(len(spy), 4) | ||
| self.assertEqual(spy[-1][0], 50.0) | ||
| self.assertFalse(w.isNull()) | ||
| w.clear() | ||
| self.assertTrue(math.isnan(w.scale())) | ||
| self.assertEqual(len(spy), 5) | ||
| self.assertTrue(math.isnan(spy[-1][0])) | ||
| self.assertTrue(w.isNull()) | ||
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| w.setAllowNull(False) | ||
| self.assertFalse(w.allowNull()) | ||
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| if __name__ == '__main__': | ||
| unittest.main() |