public void TestRoundTrip(string filename)
{
//
// can't round trip since I added the ToExternal/ ToInternal to the shapefile readers and writers.
//
PrecisionModel pm = new PrecisionModel();
GeometryFactory geometryFactory = new GeometryFactory(pm, -1);
int differenceCount = 0;
string testName = "";
string srcShpFilename = Global.GetUnitTestRootDirectory() + @"\IO\Shapefile\Testfiles\" + filename;
string destShpFilename = Global.GetUnitTestRootDirectory() + @"\IO\Shapefile\Testfiles\testroundtrip" + filename;
// do the round trip
ShapefileReader shpReader = new ShapefileReader(srcShpFilename + ".shp", geometryFactory);
GeometryCollection shapes = shpReader.ReadAll();
new ShapefileWriter(destShpFilename, geometryFactory).WriteGeometryCollection(shapes);
// perfom binary compare on the .shp
testName = String.Format("Test round trip .shp - {0}", filename);
differenceCount = Compare.BinaryCompare(srcShpFilename + ".shp", destShpFilename + ".shp");
Assertion.AssertEquals(testName, 0, differenceCount);
// perfom binary compare on the .shx file
testName = String.Format("Test round trip .shx - {0}", filename);
differenceCount = Compare.BinaryCompare(srcShpFilename + ".shx", destShpFilename + ".shx");
Assertion.AssertEquals(testName, 0, differenceCount);
}