Merge pull request #1292 from thomaslima/issue-1265

added test for issue 1265 (writing and reading pngs)

src/pya/unit_tests/pyaTests.cc

@@ -106,10 +106,10 @@ PYTHONTEST (dbLayoutToNetlist, "dbLayoutToNetlist.py")
 PYTHONTEST (dbLayoutVsSchematic, "dbLayoutVsSchematic.py")
 PYTHONTEST (dbNetlistCrossReference, "dbNetlistCrossReference.py")
 PYTHONTEST (layLayers, "layLayers.py")
+PYTHONTEST (layPixelBuffer, "layPixelBuffer.py")
 PYTHONTEST (tlTest, "tlTest.py")
 #if defined(HAVE_QT) && defined(HAVE_QTBINDINGS)
 PYTHONTEST (qtbinding, "qtbinding.py")
 #endif
 
 #endif
-

testdata/pymod/pya_tests.py

@@ -22,20 +22,23 @@ import dbLayoutToNetlist
 import dbLayoutVsSchematic
 import dbNetlistCrossReference
 import layLayers
+import layPixelBuffer
 
 if __name__ == '__main__':
-  suite = unittest.TestLoader().loadTestsFromTestCase(tlTest.TLTest)
+  loader = unittest.TestLoader()
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbPCells.DBPCellTests)
+  suite = unittest.TestSuite()
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbLayoutTest.DBLayoutTest)
+  suite.addTests(loader.loadTestsFromTestCase(tlTest.TLTest))
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbPolygonTest.DBPolygonTests)
+  suite.addTests(loader.loadTestsFromTestCase(dbPCells.DBPCellTests))
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbReaders.DBReadersTests)
+  suite.addTests(loader.loadTestsFromTestCase(dbLayoutTest.DBLayoutTest))
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbRegionTest.DBRegionTest)
+  suite.addTests(loader.loadTestsFromTestCase(dbPolygonTest.DBPolygonTests))
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbTransTest.DBTransTests)
+  suite.addTests(loader.loadTestsFromTestCase(dbReaders.DBReadersTests))
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbLayoutToNetlist.DBLayoutToNetlistTests)
+  suite.addTests(loader.loadTestsFromTestCase(dbRegionTest.DBRegionTest))
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbLayoutVsSchematic.DBLayoutVsSchematicTests)
+  suite.addTests(loader.loadTestsFromTestCase(dbTransTest.DBTransTests))
-  suite = unittest.TestLoader().loadTestsFromTestCase(dbNetlistCrossReference.DBNetlistCrossReferenceTests)
+  suite.addTests(loader.loadTestsFromTestCase(dbLayoutToNetlist.DBLayoutToNetlistTests))
-  suite = unittest.TestLoader().loadTestsFromTestCase(layLayers.LAYLayersTests)
+  suite.addTests(loader.loadTestsFromTestCase(dbLayoutVsSchematic.DBLayoutVsSchematicTests))
+  suite.addTests(loader.loadTestsFromTestCase(dbNetlistCrossReference.DBNetlistCrossReferenceTests))
+  suite.addTests(loader.loadTestsFromTestCase(layLayers.LAYLayersTests))
+  suite.addTests(loader.loadTestsFromTestCase(layPixelBuffer.LAYPixelBufferTests))
 
   if not unittest.TextTestRunner(verbosity = 1).run(suite).wasSuccessful():
     sys.exit(1)
-

testdata/python/dbLayoutToNetlist.py

@@ -455,7 +455,7 @@ end;
   def test_13_ReadAndWrite(self):
 
     ut_testsrc = os.getenv("TESTSRC")
-    ut_testtmp = os.getenv("TESTTMP")
+    ut_testtmp = os.getenv("TESTTMP", "")
 
     l2n = pya.LayoutToNetlist()
 
@@ -725,4 +725,3 @@ if __name__ == '__main__':
 
   if not unittest.TextTestRunner(verbosity = 1).run(suite).wasSuccessful():
     sys.exit(1)
-

testdata/python/dbLayoutVsSchematic.py

@@ -144,7 +144,7 @@ class DBLayoutVsSchematicTests(unittest.TestCase):
   def test_3_ReadAndWrite(self):
 
     ut_testsrc = os.getenv("TESTSRC")
-    ut_testtmp = os.getenv("TESTTMP")
+    ut_testtmp = os.getenv("TESTTMP", "")
 
     lvs = pya.LayoutVsSchematic()
 
@@ -181,4 +181,3 @@ if __name__ == '__main__':
 
   if not unittest.TextTestRunner(verbosity = 1).run(suite).wasSuccessful():
     sys.exit(1)
-

testdata/python/layPixelBuffer.py

@@ -0,0 +1,52 @@
+# KLayout Layout Viewer
+# Copyright (C) 2006-2023 Matthias Koefferlein
+#
+# 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.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+
+import pya
+import unittest
+import os
+import sys
+
+class LAYPixelBufferTests(unittest.TestCase):
+
+    def test_4(self):
+        pb = pya.PixelBuffer(10, 20)
+        pb.transparent = True
+        pb.fill(0xf0010203)
+
+        png = pb.to_png_data()
+
+        # some range because implementations may differ
+        self.assertGreater(len(png), 20)
+        self.assertLess(len(png), 200)
+        pb_copy = pya.PixelBuffer.from_png_data(png)
+        self.assertEqual(pb, pb_copy)
+
+        ut_testtmp = os.getenv("TESTTMP", ".")
+        tmp = os.path.join(ut_testtmp, "tmp.png")
+
+        pb.write_png(tmp)
+        pb_copy = pya.PixelBuffer.read_png(tmp)
+        self.assertEqual(pb, pb_copy)
+
+
+# run unit tests
+if __name__ == '__main__':
+  suite = unittest.TestLoader().loadTestsFromTestCase(LAYPixelBufferTests)
+
+  if not unittest.TextTestRunner(verbosity = 1).run(suite).wasSuccessful():
+    sys.exit(1)