public void IsBinary_xlsExtensionLowercase_ReturnsTrue()
{
string filename = "file.xls";
const bool expected = true;
bool result = ExcelFileType.IsBinary(filename);
result.Should().Be(expected);
}
public void IsBinary_NonExcelExtension_ReturnsFalse()
{
string filename = "file.txt";
const bool expected = false;
bool result = ExcelFileType.IsBinary(filename);
result.Should().Be(expected);
}
public void IsBinary_xlsxExtensionUppercase_ReturnsFalse()
{
string filename = "file.XLSX";
const bool expected = false;
bool result = ExcelFileType.IsBinary(filename);
result.Should().Be(expected);
}
public void IsBinary_EmptyString_ReturnsFalse()
{
string filename = string.Empty;
const bool expected = false;
bool result = ExcelFileType.IsBinary(filename);
result.Should().Be(expected);
}