public void CanGetCommonRootPath()
{
FilePath[] pathsWithCommon =
{
FilePath.Build("test", "common"),
FilePath.Build("test", "common", "notcommon1"),
FilePath.Build("test", "common", "notcommon1", "notcommon11"),
FilePath.Build("test", "common", "notcommon2"),
FilePath.Build("test", "common", "notcommon3", "notcommon31"),
};
Assert.AreEqual(FilePath.Build("test", "common"), FilePath.GetCommonRootPath(pathsWithCommon));
FilePath[] justOnePath =
{
FilePath.Build("test", "common"),
};
Assert.AreEqual(FilePath.Build("test", "common"), FilePath.GetCommonRootPath(justOnePath));
FilePath[] pathsNotCommon =
{
FilePath.Build("notcommon1"),
FilePath.Build("notcommon2"),
FilePath.Build("notcommon3"),
};
Assert.IsTrue(FilePath.GetCommonRootPath(pathsNotCommon).IsNullOrEmpty);
}