CFGLibTest.Unit.TestCFGToCNFEmptyProb.TestGetNullable04 C# (CSharp) Method

		public void TestGetNullable04() {
			var productions = new HashSet<Production> {
				CFGParser.Production("<A> -> <A> <A>"),
				CFGParser.Production("<A> -> ε"),
				CFGParser.Production("<A> -> 'a'"),
			};

			var result = (Dictionary<Nonterminal, double>)nullableClass.InvokeStatic("GetNullable", new object[] { productions });

			Assert.IsTrue(result.Count == 1);
			var phiRecip = 2.0 / (1.0 + Math.Sqrt(5));
			Helpers.AssertNear(1.0 - phiRecip, result[Nonterminal.Of("A")]);
		}