public void Sanitize_WithUnsafeInput_RemovesLeadingEqualsSign()
{
// Arrange
string input = "=cmd|'/C ping 127.0.0.1'!A0";
NoFormulaeExcelSanitizer sanitizer = new NoFormulaeExcelSanitizer();
// Act
string result = sanitizer.Sanitize(input);
// Assert
Assert.Equal("cmd|'/C ping 127.0.0.1'!A0", result);
}
public void Sanitize_WithSafeInput_ReturnsInputUnmodified()
{
// Arrange
string input = "This is a safe input.";
NoFormulaeExcelSanitizer sanitizer = new NoFormulaeExcelSanitizer();
// Act
string result = sanitizer.Sanitize(input);
// Assert
Assert.Equal("This is a safe input.", result);
}