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diff --git a/src/silx/gui/plot/tools/test/testCurveLegendsWidget.py b/src/silx/gui/plot/tools/test/testCurveLegendsWidget.py
new file mode 100644
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+++ b/src/silx/gui/plot/tools/test/testCurveLegendsWidget.py
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+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2018 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.
+#
+# ###########################################################################*/
+__authors__ = ["T. Vincent"]
+__license__ = "MIT"
+__date__ = "02/08/2018"
+
+
+import unittest
+
+from silx.gui import qt
+from silx.utils.testutils import ParametricTestCase
+from silx.gui.utils.testutils import TestCaseQt
+from silx.gui.plot import PlotWindow
+from silx.gui.plot.tools import CurveLegendsWidget
+
+
+class TestCurveLegendsWidget(TestCaseQt, ParametricTestCase):
+    """Tests for CurveLegendsWidget class"""
+
+    def setUp(self):
+        super(TestCurveLegendsWidget, self).setUp()
+        self.plot = PlotWindow()
+
+        self.legends = CurveLegendsWidget.CurveLegendsWidget()
+        self.legends.setPlotWidget(self.plot)
+
+        dock = qt.QDockWidget()
+        dock.setWindowTitle('Curve Legends')
+        dock.setWidget(self.legends)
+        self.plot.addTabbedDockWidget(dock)
+
+        self.plot.show()
+        self.qWaitForWindowExposed(self.plot)
+
+    def tearDown(self):
+        del self.legends
+        self.qapp.processEvents()
+        self.plot.setAttribute(qt.Qt.WA_DeleteOnClose)
+        self.plot.close()
+        del self.plot
+        super(TestCurveLegendsWidget, self).tearDown()
+
+    def _assertNbLegends(self, count):
+        """Check the number of legends in the CurveLegendsWidget"""
+        children = self.legends.findChildren(CurveLegendsWidget._LegendWidget)
+        self.assertEqual(len(children), count)
+
+    def testAddRemoveCurves(self):
+        """Test CurveLegendsWidget while adding/removing curves"""
+        self.plot.addCurve((0, 1), (1, 2), legend='a')
+        self._assertNbLegends(1)
+        self.plot.addCurve((0, 1), (2, 3), legend='b')
+        self._assertNbLegends(2)
+
+        # Detached/attach
+        self.legends.setPlotWidget(None)
+        self._assertNbLegends(0)
+
+        self.legends.setPlotWidget(self.plot)
+        self._assertNbLegends(2)
+
+        self.plot.clear()
+        self._assertNbLegends(0)
+
+    def testUpdateCurves(self):
+        """Test CurveLegendsWidget while updating curves """
+        self.plot.addCurve((0, 1), (1, 2), legend='a')
+        self._assertNbLegends(1)
+        self.plot.addCurve((0, 1), (2, 3), legend='b')
+        self._assertNbLegends(2)
+
+        # Activate curve
+        self.plot.setActiveCurve('a')
+        self.qapp.processEvents()
+        self.plot.setActiveCurve('b')
+        self.qapp.processEvents()
+
+        # Change curve style
+        curve = self.plot.getCurve('a')
+        curve.setLineWidth(2)
+        for linestyle in (':', '', '--', '-'):
+            with self.subTest(linestyle=linestyle):
+                curve.setLineStyle(linestyle)
+                self.qapp.processEvents()
+                self.qWait(1000)
+
+        for symbol in ('o', 'd', '', 's'):
+            with self.subTest(symbol=symbol):
+                curve.setSymbol(symbol)
+                self.qapp.processEvents()
+                self.qWait(1000)