MSTestContrib BDD Extensions

gistfile1.txt

namespace MSTestContrib.Specifications
{
    public static class BDDExtensions
    {
        public static ThenGrammar Then(this WhenGrammar whenGrammar, string description, Action<SpecificationContext> implementation)
        {
            Func<SpecificationContext, bool> implementationWithReturnTrue = (x) =>
            {
                implementation(x);
                return true;
            };

            var thenGrammar = new ThenGrammar(whenGrammar.Context, description, implementationWithReturnTrue, ThenGrammarPrefix.Then);
            thenGrammar.Evaluate();
            return thenGrammar;
        }

        public static ThenGrammar And(this ThenGrammar thenGrammar, string description, Action<SpecificationContext> implementation)
        {
            Func<SpecificationContext, bool> implementationWithReturnTrue = (x) =>
            {
                implementation(x);
                return true;
            };

            var thenGrammar1 = new ThenGrammar(thenGrammar.Context, description, implementationWithReturnTrue, ThenGrammarPrefix.Then);
            thenGrammar1.Evaluate();
            return thenGrammar1;
        }

        public static ThenGrammar Then(this GivenGrammar givenGrammar, string description, Action<SpecificationContext> implementation)
        {
            Func<SpecificationContext, bool> implementationWithReturnTrue = (x) =>
            {
                implementation(x);
                return true;
            };

            var thenGrammar = new ThenGrammar(givenGrammar.Context, description, implementationWithReturnTrue, ThenGrammarPrefix.Then);
            thenGrammar.Evaluate();
            return thenGrammar;
        }

        public static GivenGrammar But(this GivenGrammar givenGrammar, string description, Action<SpecificationContext> implementation)
        {
            var newGrammar = new GivenGrammar(givenGrammar.Context, description, implementation, GivenGrammarPrefix.And);
            newGrammar.Evaluate();
            return newGrammar;
        }

        public static ThenGrammar But(this ThenGrammar thenGrammar, string description, Action<SpecificationContext> implementation)
        {
            Func<SpecificationContext, bool> implementationWithReturnTrue = (x) =>
            {
                implementation(x);
                return true;
            };

            var newGrammar = new ThenGrammar(thenGrammar.Context, description, implementationWithReturnTrue, ThenGrammarPrefix.And);
            newGrammar.Evaluate();
            return newGrammar;
        }
    }
}