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diff --git a/silx/gui/data/test/test_textformatter.py b/silx/gui/data/test/test_textformatter.py
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+++ b/silx/gui/data/test/test_textformatter.py
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+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 2016-2017 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__ = ["V. Valls"]
+__license__ = "MIT"
+__date__ = "24/01/2017"
+
+import unittest
+
+from silx.gui.test.utils import TestCaseQt
+from silx.gui.test.utils import SignalListener
+from ..TextFormatter import TextFormatter
+
+
+class TestTextFormatter(TestCaseQt):
+
+    def test_copy(self):
+        formatter = TextFormatter()
+        copy = TextFormatter(formatter=formatter)
+        self.assertIsNot(formatter, copy)
+        copy.setFloatFormat("%.3f")
+        self.assertEquals(formatter.integerFormat(), copy.integerFormat())
+        self.assertNotEquals(formatter.floatFormat(), copy.floatFormat())
+        self.assertEquals(formatter.useQuoteForText(), copy.useQuoteForText())
+        self.assertEquals(formatter.imaginaryUnit(), copy.imaginaryUnit())
+
+    def test_event(self):
+        listener = SignalListener()
+        formatter = TextFormatter()
+        formatter.formatChanged.connect(listener)
+        formatter.setFloatFormat("%.3f")
+        formatter.setIntegerFormat("%03i")
+        formatter.setUseQuoteForText(False)
+        formatter.setImaginaryUnit("z")
+        self.assertEquals(listener.callCount(), 4)
+
+    def test_int(self):
+        formatter = TextFormatter()
+        formatter.setIntegerFormat("%05i")
+        result = formatter.toString(512)
+        self.assertEquals(result, "00512")
+
+    def test_float(self):
+        formatter = TextFormatter()
+        formatter.setFloatFormat("%.3f")
+        result = formatter.toString(1.3)
+        self.assertEquals(result, "1.300")
+
+    def test_complex(self):
+        formatter = TextFormatter()
+        formatter.setFloatFormat("%.1f")
+        formatter.setImaginaryUnit("i")
+        result = formatter.toString(1.0 + 5j)
+        result = result.replace(" ", "")
+        self.assertEquals(result, "1.0+5.0i")
+
+    def test_string(self):
+        formatter = TextFormatter()
+        formatter.setIntegerFormat("%.1f")
+        formatter.setImaginaryUnit("z")
+        result = formatter.toString("toto")
+        self.assertEquals(result, '"toto"')
+
+
+def suite():
+    test_suite = unittest.TestSuite()
+    test_suite.addTest(
+        unittest.defaultTestLoader.loadTestsFromTestCase(TestTextFormatter))
+    return test_suite
+
+
+if __name__ == '__main__':
+    unittest.main(defaultTest='suite')