/// <summary> /// Starts a chain of assertions on <paramref name="value"/>. /// Asserts that <paramref name="value"/> is not `null`. /// </summary> public static Assertable <T> HasValue <T>(T value, string name = null) where T : class { var parameter = DebugValueExpressionVisitor.GetDebugExpresssion(name ?? "value", value); if (value == null) { TestFrameworkProvider.Fail(GetDiagnosticMessage(Expression.NotEqual(parameter, Expression.Constant(null, typeof(T))), null, s_emptyContext)); return(Assertable <T> .NoOp()); } return(Assertable <T> .FromValueExpression(value, parameter)); }