public void ProjectFileWithoutBomDoesNotContainsBomAfterSave()
{
string content = ObjectModelHelpers.CleanupFileContents(@"<Project><Target Name=""Build""/></Project>");
var file = FileUtilities.GetTemporaryFile(".proj");
try
{
File.WriteAllText(file, content, new UTF8Encoding(encoderShouldEmitUTF8Identifier: false));
Assert.False(EncodingUtilities.FileStartsWithPreamble(file));
// Load and manipulate/save the project
var project = new Project(ProjectRootElement.Open(file, ProjectCollection.GlobalProjectCollection));
project.AddItem("Compile", "Program.cs");
project.Save();
// Ensure the file was really saved and that the file still contains a BOM
Assert.Contains("<Compile Include=\"Program.cs\" />", File.ReadAllText(file));
Assert.False(EncodingUtilities.FileStartsWithPreamble(file));
}
finally
{
FileUtilities.DeleteDirectoryNoThrow(Path.GetDirectoryName(file), false);
}
}
private static void CreateProjectAndAssertEncoding(bool xmlDeclaration, bool byteOrderMark)
{
string declaration = @"<?xml version=""1.0"" encoding=""utf-8""?>";
string content = xmlDeclaration ? declaration : string.Empty;
content += @"<Project><Target Name=""Build""/></Project>";
content = ObjectModelHelpers.CleanupFileContents(content);
var file = FileUtilities.GetTemporaryFile(".proj");
try
{
File.WriteAllText(file, content, new UTF8Encoding(encoderShouldEmitUTF8Identifier: byteOrderMark));
Assert.Equal(byteOrderMark, EncodingUtilities.FileStartsWithPreamble(file));
// Load and manipulate/save the project
var project = new Project(ProjectRootElement.Open(file, ProjectCollection.GlobalProjectCollection));
project.AddItem("Compile", "Program.cs");
project.Save();
// Ensure the file was really saved and that the presence of a BOM has not changed
string actualContents = File.ReadAllText(file);
Assert.Contains("<Compile Include=\"Program.cs\" />", actualContents);
if (xmlDeclaration)
{
Assert.Contains(declaration, actualContents);
}
else
{
Assert.DoesNotContain(declaration, actualContents);
}
Assert.Equal(byteOrderMark, EncodingUtilities.FileStartsWithPreamble(file));
}
finally
{
FileUtilities.DeleteDirectoryNoThrow(Path.GetDirectoryName(file), false);
}
}