public MkDocsExporter(FileSystemImagesCopier imagesCopier) {
this.imagesCopier = imagesCopier;
}
public void SetUp() {
var path = Path.GetTempPath();
var testDirectoryPath = Path.Combine(path, Guid.NewGuid().ToString());
testDirectory = Directory.CreateDirectory(testDirectoryPath);
imagesCopier = Substitute.For<FileSystemImagesCopier>();
}