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diff --git a/src/silx/gui/widgets/test/test_elidedlabel.py b/src/silx/gui/widgets/test/test_elidedlabel.py
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+++ b/src/silx/gui/widgets/test/test_elidedlabel.py
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+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2020 European Synchrotron Radiation Facility
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+# ###########################################################################*/
+"""Tests for ElidedLabel"""
+
+__license__ = "MIT"
+__date__ = "08/06/2020"
+
+import unittest
+
+from silx.gui import qt
+from silx.gui.widgets.ElidedLabel import ElidedLabel
+from silx.gui.utils import testutils
+
+
+class TestElidedLabel(testutils.TestCaseQt):
+
+    def setUp(self):
+        self.label = ElidedLabel()
+        self.label.show()
+        self.qWaitForWindowExposed(self.label)
+
+    def tearDown(self):
+        self.label.setAttribute(qt.Qt.WA_DeleteOnClose)
+        self.label.close()
+        del self.label
+        self.qapp.processEvents()
+
+    def testElidedValue(self):
+        """Test elided text"""
+        raw = "mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm"
+        self.label.setText(raw)
+        self.label.setFixedWidth(30)
+        displayedText = qt.QLabel.text(self.label)
+        self.assertNotEqual(raw, displayedText)
+        self.assertIn("…", displayedText)
+        self.assertIn("m", displayedText)
+
+    def testNotElidedValue(self):
+        """Test elided text"""
+        raw = "mmmmmmm"
+        self.label.setText(raw)
+        self.label.setFixedWidth(200)
+        displayedText = qt.QLabel.text(self.label)
+        self.assertNotIn("…", displayedText)
+        self.assertEqual(raw, displayedText)
+
+    def testUpdateFromElidedToNotElided(self):
+        """Test tooltip when not elided"""
+        raw1 = "mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm"
+        raw2 = "nn"
+        self.label.setText(raw1)
+        self.label.setFixedWidth(30)
+        self.label.setText(raw2)
+        displayedTooltip = qt.QLabel.toolTip(self.label)
+        self.assertNotIn(raw1, displayedTooltip)
+        self.assertNotIn(raw2, displayedTooltip)
+
+    def testUpdateFromNotElidedToElided(self):
+        """Test tooltip when elided"""
+        raw1 = "nn"
+        raw2 = "mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm"
+        self.label.setText(raw1)
+        self.label.setFixedWidth(30)
+        self.label.setText(raw2)
+        displayedTooltip = qt.QLabel.toolTip(self.label)
+        self.assertNotIn(raw1, displayedTooltip)
+        self.assertIn(raw2, displayedTooltip)
+
+    def testUpdateFromElidedToElided(self):
+        """Test tooltip when elided"""
+        raw1 = "nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn"
+        raw2 = "mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm"
+        self.label.setText(raw1)
+        self.label.setFixedWidth(30)
+        self.label.setText(raw2)
+        displayedTooltip = qt.QLabel.toolTip(self.label)
+        self.assertNotIn(raw1, displayedTooltip)
+        self.assertIn(raw2, displayedTooltip)