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How to use before_all method of NSpec.Tests.WhenRunningSpecs.BeforeAndAfter.before_all_sampleSpec class

Best NSpec code snippet using NSpec.Tests.WhenRunningSpecs.BeforeAndAfter.before_all_sampleSpec.before_all

improperly_formed_context_methods.cs

Source:improperly_formed_context_methods.cs

...5{6    [TestFixture]7    public class improperly_formed_context_methods : when_running_specs8    {9        class before_all_sampleSpec : nspec10        {11            public static List<string> sequence = new List<string>();12            void a_regular_context_method()13            {14                //this context method wraps everything in lambdas (as context methods should),15                //because it's behavior is deferred using lambdas, it is run after the methods declared below.16                it["uses lambdas"] = () => sequence.Add("a_regular_context_method");17            }18            void messed_up_context()19            {20                //this contrived context method really should have everything wrapped in lambdas21                sequence.Add("messed_up_context");22            }23            void before_all()24            {25                //this is a properly crafted class level method, without lambda26                sequence.Add("before_all");27            }28            void another_messed_up_context()29            {30                //this context method should also have everything wrapped in lambdas31                //notice, it would sort alphabetically before the before_all method32                sequence.Add("another_messed_up_context");33            }34        }35        [Test]36        public void it_runs_things_in_a_strange_order()37        {38            before_all_sampleSpec.sequence = new List<string>();39            Run(typeof (before_all_sampleSpec));40            //the two improperly crafted context methods are executed first in the order they were declared41            //while nspec is building up its model of contexts and examples42            //then the class level before and properly crafted spec (wrapped in lambda) is executed.43            //The moral of the story is context methods that don't have their behavior wrapped44            //in lambdas (incorrectly so), run in the order that they are declared (disregarding alphabetical ordering).45            //FYI, alphabetical ordering can easily be implemented in the 'Methods' extension method.46            before_all_sampleSpec.sequence.Should().Equal(47                new[] { "messed_up_context", "another_messed_up_context", "before_all", "a_regular_context_method" });48        }49    }50}

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