public void GetCanonicalExtension_FilenameWithExtension_ReturnsCanonicalExtension()
{
var original = "file.txt";
var expected = ".txt".ToUpperInvariant();
var result = FileExtensionUtils.GetCanonicalExtension(original);
Assert.AreEqual(expected, result);
}
public void GetCanonicalExtension_Whitespace_ReturnsEmpty()
{
var original = " ";
var expected = Path.GetExtension(original);
var ext = FileExtensionUtils.GetCanonicalExtension(original);
Assert.AreEqual(expected, ext);
}
public void GetCanonicalExtension_ExtensionWithoutDot_ReturnsEmpty()
{
var original = "txt";
var expected = string.Empty;
var result = FileExtensionUtils.GetCanonicalExtension(original);
Assert.AreEqual(expected, result);
}
public void GetCanonicalExtension_ExtensionWithDot_ReturnsUppercased()
{
var original = ".txt";
var expected = original.ToUpperInvariant();
var result = FileExtensionUtils.GetCanonicalExtension(original);
Assert.AreEqual(expected, result);
}
public void GetCanonicalExtension_Empty_ReturnsEmpty()
{
var ext = FileExtensionUtils.GetCanonicalExtension(string.Empty);
Assert.AreEqual(string.Empty, ext);
}
public void GetCanonicalExtension_Null_ReturnsNull()
{
var ext = FileExtensionUtils.GetCanonicalExtension(null);
Assert.IsNull(ext);
}
protected override bool IsFileSupportedCore(string path)
{
return(StringComparer.OrdinalIgnoreCase.Equals(
FileExtensionUtils.GetCanonicalExtension(path),
FileExtensionUtils.GetCanonicalExtension(Extension)));
}
