c# - UnintentionalCodeFirstException | Entity Framework Unit Testing with Effort.Ef6 using Database First -


the situation

i want enable unit testing of dbcontext based on entity framework 6. have created dbcontext , models database first approach , have .edmx designer file.

the problem

my automatically created dbcontext override dbcontext.onmodelcreating method this:

protected override void onmodelcreating(dbmodelbuilder modelbuilder) {     throw new unintentionalcodefirstexception(); }

i trying create new instance of dbcontext in mocked data access service based on information of this article. code doesn't run database.setinitializer; author of blog post pointed out. constructor looks his. dbcontext initialization looks this:

public databaseentities(dbconnection connection)       : base(connection, true) { }

which results in following exception when reaching mentioned overridden onmodelcreating

system.data.entity.infrastructure.unintentionalcodefirstexception: 'the context being used in code first mode code generated edmx file either database first or model first development. not work correctly. fix problem not remove line of code throws exception. if wish use database first or model first, make sure entity framework connection string included in app.config or web.config of start-up project. if creating own dbconnection, make sure entityconnection , not other type of dbconnection, , pass 1 of base dbcontext constructors take dbconnection. learn more code first, database first, , model first see entity framework documentation here: http://go.microsoft.com/fwlink/?linkid=394715'

there plenty of questions on stackoverflow focus on unit testing effort while using database-first apporach, no 1 seems have similar problems me.

what have tried do

  • searching internet long time solution.
  • uncomment overridden onmodelcreating().
  • i have tried apply this solution without success.
  • mock dbcontext moq, not option.

the question

how can create , use in-memory database (with effort)?

additional information

when uncomment onmodelcreating(), exception thrown @ first access datacontext. e.g.:

dbconnection effortconnection = effort.dbconnectionfactory.createpersistent("mockeddatabaseentities");  using (databaseentities datacontext = new databaseentities(effortconnection)) {     datacontext.students.count(); // exception throws here }

system.data.entity.modelconfiguration.modelvalidationexception: 'one or more validation errors detected during model generation: myapplication.shared.model.keyvaluepair: : entitytype 'keyvaluepair' has no key defined. define key entitytype. keyvaluepairs: entitytype: entityset 'keyvaluepairs' based on type 'keyvaluepair' has no keys defined.'

the problem had specify key keyvaluepair dataset.

protected override void onmodelcreating(dbmodelbuilder modelbuilder) {     modelbuilder.entity<keyvaluepair>().haskey(x => x.key);     base.onmodelcreating(modelbuilder, null); }

thank robert jørgensgaard engdahl !


Comments

Post a Comment

Popular posts from this blog

angular - Ionic slides - dynamically add slides before and after -

hi i'm using ngfor create set of 3 slides while starting in middle i'm guaranteed able slide left or right on start. when slide right can simple listen reachedend , push slide array i'm looping. but have problem adding slide beginning. if same above , use e.g. array.unshift() or spread add item beginning, view think it's on position 0 , snaps view new slide. the code below work animates slide change index 1. slide = [0,1,2] //example loop slidechanged(event) { if(this.slides.isbeginning()){ this.slide = [this.slide[0]-1, ...this.slide]; this.slides.update(); this.slides.slideto(1) } } <ion-slides [initialslide]="1" (ionslidedidchange)="slidechanged($event)"> <ion-slide *ngfor="let item of slide"> <h1>slide {{item}}</h1> </ion-slide> </ion-slides> any appreciated! you can using ionslidenextend , ionslideprevend events slides . please
Read more

minify - Minimizing css files -

i want know how css files can minimized. currently, using external sites css minifier compress css files. however, after removing whitespaces, comments, etc, file sizes reduced 10-15%. how frameworks bootstrap manage make minimized versions kilobytes. as example, css is: body { background-color: #ff0; } the reduction goes 28 bytes 22 bytes other css files have lot more characters still smaller this. actually minifying code means it's remove thing code white space characters new line characters comments block delimiters it reduces amount of code has transferred on web , speed site load fastly.but unreadable format.
Read more

Add a dynamic header in angular 2 http provider -

i have http interceptor built via tutorial https://scotch.io/@kashyapmukkamala/using-http-interceptor-with-angular2 the problem need have dynamic header changes automatically once changes 'mode' in app. service able tell interceptor change header, or have interceptor pull header (which string)from service each request. able throwing away patch method, call http.patch('new header string') set header string. call in service controls 'mode' setting. wondering if there way interceptor pull recent value service each request or if can add method http provider via interceptor? i've tried call service in interceptor each request returns undefined. because creating new instance of service or copying value before service fired , loaded/changed data. i don't want pass header string every http provider call because defeats purpose of having interceptor, id able set once changes or have provider fetch service before makes request. tl;dr : need add autom
Read more