# coding: utf-8
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"""Test the plot's save action (consistency of output)"""

__authors__ = ["P. Knobel"]
__license__ = "MIT"
__date__ = "28/11/2017"


import unittest
import tempfile
import os

from silx.gui.plot import PlotWidget
from silx.gui.plot.actions.io import SaveAction


class TestSaveAction(unittest.TestCase):

    def setUp(self):
        self.plot = PlotWidget(backend='none')
        self.saveAction = SaveAction(plot=self.plot)

        self.tempdir = tempfile.mkdtemp()
        self.out_fname = os.path.join(self.tempdir, "out.dat")

    def tearDown(self):
        os.unlink(self.out_fname)
        os.rmdir(self.tempdir)

    def testSaveMultipleCurvesAsSpec(self):
        """Test that labels are properly used."""
        self.plot.setGraphXLabel("graph x label")
        self.plot.setGraphYLabel("graph y label")

        self.plot.addCurve([0, 1], [1, 2], "curve with labels",
                           xlabel="curve0 X", ylabel="curve0 Y")
        self.plot.addCurve([-1, 3], [-6, 2], "curve with X label",
                           xlabel="curve1 X")
        self.plot.addCurve([-2, 0], [8, 12], "curve with Y label",
                           ylabel="curve2 Y")
        self.plot.addCurve([3, 1], [7, 6], "curve with no labels")

        self.saveAction._saveCurves(self.out_fname,
                                    SaveAction.ALL_CURVES_FILTERS[0])  # "All curves as SpecFile (*.dat)"

        with open(self.out_fname, "rb") as f:
            file_content = f.read()
            if hasattr(file_content, "decode"):
                file_content = file_content.decode()

            # case with all curve labels specified
            self.assertIn("#S 1 curve0 Y", file_content)
            self.assertIn("#L curve0 X  curve0 Y", file_content)

            # graph X&Y labels are used when no curve label is specified
            self.assertIn("#S 2 graph y label", file_content)
            self.assertIn("#L curve1 X  graph y label", file_content)

            self.assertIn("#S 3 curve2 Y", file_content)
            self.assertIn("#L graph x label  curve2 Y", file_content)

            self.assertIn("#S 4 graph y label", file_content)
            self.assertIn("#L graph x label  graph y label", file_content)


def suite():
    test_suite = unittest.TestSuite()
    test_suite.addTest(
        unittest.defaultTestLoader.loadTestsFromTestCase(TestSaveAction))
    return test_suite


if __name__ == '__main__':
    unittest.main(defaultTest='suite')