public void test_basic()
{
var dep = new Dependencies();
dep.add_direct("A", new string[] { "B", "C" });
dep.add_direct("B", new string[] { "C", "E" });
dep.add_direct("C", new string[] { "G" });
dep.add_direct("D", new string[] { "A", "F" });
dep.add_direct("E", new string[] { "F" });
dep.add_direct("F", new string[] { "H" });
CollectionAssert.AreEqual(new string[] { "B", "C", "E", "F", "G", "H" }, dep.dependencies_for("A"));
CollectionAssert.AreEqual(new string[] { "C", "E", "F", "G", "H" }, dep.dependencies_for("B"));
CollectionAssert.AreEqual(new string[] { "G" }, dep.dependencies_for("C"));
CollectionAssert.AreEqual(new string[] { "A", "B", "C", "E", "F", "G", "H" }, dep.dependencies_for("D"));
CollectionAssert.AreEqual(new string[] { "F", "H" }, dep.dependencies_for("E"));
CollectionAssert.AreEqual(new string[] { "H" }, dep.dependencies_for("F"));
}