Golang Database Unit Testing

For this demonstration, I am using SQL Server 2012 and Visual Studio 2013. I don't aim to say that my definition is the canonical one. To run your local unit tests, follow these steps: Be sure your project is synchronized with Gradle by clicking Sync Project in the toolbar. You could write a unit test that asserts your able to detect and act on users logic (ie seeding when empty and ignoring when full) without any database. One ways to do this is to have a separate unit test database, which is under the control of the test cases: the test cases clean out the database before starting any tests. My examples were very simple, but we saw how to create basic tests for functions as well as basic tests for HTTP endpoints. Insertion and querying works as expected, however I have an issue testing the query method using unit test. 3 to include a reference to ASTM C1324. Unit tests are used to check if small units of code (modules which may be called a number of times by an application) are functioning as you would expect them to. An ArchUnit test is written and runs as a unit test that gives developers and application architects fast feedback on their work. This is what I usually do:. katls - MSFT Posted: Visual Studio Team System - Database Professionals, Unit Testing the new Database Unit Test Code. I hope it is no secret that testing of written code is as important as writing the code itself, and sometimes even more important. We recommend naming tests to follow the same convention as our acceptance tests, Test_. Database Unit testing Database unit testing is used for feature testing of our individual modules like stored procedures, triggers or user defined functions etc. This tutorial shows how to Unit Test JPA with JUnit and a H2 In Memory Database. SQLUnit is a regression and unit testing harness for testing database stored procedures. Go Unit Tests: Tips from the Trenches. A “class” in the context of SQL Server unit testing is basically a schema which is used for storing and organizing unit tests. With a flexible set of included modules tests are easy to write, easy to use and easy to maintain. You can do a lot of great things will all of these technologies, whether it be individually or all together. In this article, we will see how to Unit Test SQL Server database using SQL Server Data Tools [SSDT]. Introduction. Code Coverage for your Golang System Tests | Elastic Blog. Unit testing is a critical skill for modern software developers. Each is the de facto standard unit testing framework for its respective language. We hope you can run your own tests for your code. They start at the service API level (REST request, in my case) and go all through to the database. Unit tests are typically run without the presence of physical resources that involve I/O such as databases, socket connections or files. You guys should definitely check out my Golang tutorial if you all want to learn such cool stuff in Go. Unit testing falls under functional testing alongside integration testing and regression testing. Pester build extension. In this post, I’ll walk through testing a weather microservice that keeps track of a list of locations and leverages a separate service to get weather details for those locations. If there is no class already created, click the New class button, enter a name for that class and click OK. Once again, this is correct, because we haven't written any test functions. and Sebastian Meine introduce their powerful new tSQLt open source unit testing framework for SQL Server, and show how to take full advantage of it. The initial target would be to achieve 80% line coverage, which would be enhanced later. Thus emphasizing true unit tests as part of your development methodology will boost your productivity. Jürgen Gutsch - 15 January, 2019. In this tutorial, we saw how to do that with the Python Unittest and pytest modules. A written version of this tutorial can be. If you would like to test the logic as well as your programs ability to speak to mysql correctly through the gorm library you could:. xml ( hibernate configuration file). Done() 612 select { 613 case <-ctx. The Ultimate Guide To Unit Testing in ASP. Here's the service file:- [Unit] Description=golang wiki initialization [Service] Type=forking PIDFi. Explained how to do unit testing in golang. With comments, we will explain in detail how to map HTTP requests, how to pass parameters, and how to write unit tests in spring MVC. As more companies try to bring database change management into DevOps, the absence of tests and a way to automate their execution becomes a major roadblock. The task will first check if Pester is installed. Python unit test example. Docker setup in the golang microservice repo. We are testing internal implementation which I don't like doing, but rather to treat a tested func as a black box with inputs and outputs. Coderwall Ruby Python JavaScript Front-End Tools iOS. Example of Mocking in Golang, and Monkey Patch. The unit test must remain valid through database refactorings. There’s no simple way to do automated mutation testing either, so it’s difficult to assess the quality of our tests through automated tooling. Unit Testing is a software testing approach which performs at the time of the development to test the smallest component of any software. QArea programmers are the real pioneers of GoLang development services. golang unix domain socket. The latest release (SQL Test 3) incorporates SQL Cover , an open source SQL code coverage library, written by Ed Elliott with support from Redgate. Gray Box Testing - Used to execute tests, risks and. Even if all unit tests work individually, you still have no idea if all the separate components will work together. So let's level set a bit. Sadly, a lot of this database work was done prior to the advent of test first practices. This is very common. Unit Testing covered by GoLang’s ‘testing’ package ‘testing’ package’s few features. After having the implementation above, we will write write a test and mock DB dependency. 3 to include a reference to ASTM C1324. Testing that the sproc exists and that it has it's expected properties will be covered - following steps 1 and 2 as per the Database unit testing patterns. Unit Testing with Mockito Ryan June 28, 2013 Spring MVC , Tech Stuff , Testing , Tools & Tips 3 Comments The next step in testing is to target the service layer and all the helpers, utilities or one-offs. The data that is. 04 Jul 2015, 13:28. That allows us to use database and other components inside a tests. go file that have routing information with controller methods. Here you can also find the comparison for executing 1000 records in one go between both. It means rather than testing the big module in one go, you test the small part of that module. This article explains three very important concepts called Stub, Mock and Fake in terms of unit testing and will see how they are used depending on the scenario. Godoc examples are snippets of Go code that are displayed as package documentation and that are verified by running them as tests. JUnit is, in turn, a Java version of Kent’s Smalltalk testing framework. Unit testing provides a structured and automated way of testing individual components of a system. For more information on writing tests, see PhutilTestCase and PhabricatorTestCase. BenchmarkSortSort-8 10000000 145 ns/op BenchmarkSortSlice-8 10000000 190 ns/op N=10 go test -bench=. Secondly unit tests are usually written these days by the programmers themselves using their regular tools - the only difference being the use of some sort of unit testing framework. Let's cover the basics of unit testing in Go and then show how you can test http. Developers new to unit testing in MediaWiki should use SampleTest. ” If the purpose or requirement failed then the unit test has failed. go counterpart within the same directory. Testing that the sproc exists and that it has it's expected properties will be covered - following steps 1 and 2 as per the Database unit testing patterns. I love Go but the one thing I don’t like so much about it is the approach that most people seem to be taking to testing. The upshot of this is that you do not need this section of the testing chapter to help you write. Sometimes you need to have tests to verify that two separate systems – like a database and your app – work together correctly, and that calls for an integration test. Test and Mock. , are working as expected. We are expected to learn by osmosis, but often we end up dooming ourselves from the start, due to misconceptions or gaps in knowledge. The most common way to test code is to write unit tests for different units of the code base. The framework makes it very easy to insert test data into a database, which in turn makes it very easy to write database unit tests. People coming from non-statically typed languages might be lost when it comes to mocking things in Golang. I am new to Unit testing in Xamarin Forms, In my solution, I have 1. 04 Jul 2015, 13:28. Can it be done at a Damian meets with Hamish Watson at the MVP Summit to talk about testing your database changes. Unit testing mainly focus on the testing the functionality of individual units only and does not uncover the issues arises when different modules are interacting with each other. gotest - unit testing and benchmarking Go programs Other topics in this series - Table of Contents The Go installation that you have comes with a unit testing package called testing and a tool called go test that you can use to write unit tests. It can be found on MSDN VS2005 Technical Articles Summary: Microsoft Visual Studio 2005 Team Edition for Database Professionals is the first toolset to deliver a comprehensive framework for performing database unit tests. They are the first barrier against problems and will let you have confidence in refactoring. The unit test is designed for Visual Studio Load Test. type ResponseRecorder struct { Code int // the HTTP response code from WriteHeader HeaderMap http. The basic testing unit - of 'unit testing' fame - can be any component of a program in its simplest form which takes an input and returns an output. This book explains in detail how to implement unit tests using two very popular open source Java technologies: JUnit and Mockito. Keep in mind. Explained how to do unit testing in golang. and Sebastian Meine introduce their powerful new tSQLt open source unit testing framework for SQL Server, and show how to take full advantage of it. Choose a more passive name, such as BookInfo. You don't need the return and the testing module provides a. Code Coverage for your Golang System Tests | Elastic Blog. Fri Jul 6, 2007 by Mladen Prajdić in net, sql-server. Interfaces and Composition for Effective Unit Testing in Golang 10 Oct 2015 in database/sql can be used to write with writing unit tests in other languages. One ways to do this is to have a separate unit test database, which is under the control of the test cases: the test cases clean out the database before starting any tests. Unit testing with DbUnit I recently started using DbUnit to set up JUnit tests for the Data Access Object (DAO) layer of a system I am writing. Database Isolation. Learn how to implement an advanced and cost-effective database unit-testing framework with tSQLt in SQL Server Management Studio. Simple and complete React DOM testing utilities that. Once we have data in the database, we can query for it and loop through the results. As you are coding, the tests will run, and give you immediate feedback on whether your code is making tests fail (or whether you've written enough code to make your test pass). Integration testing is mainly useful for situations where unit testing is not enough. Testing that the sproc exists and that it has it's expected properties will be covered - following steps 1 and 2 as per the Database unit testing patterns. The line “RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go test -cover. All the unit tests are suddenly rendered useless. Let's get some definitions on the table. The subject here specifically relates to database unit testing. To compound it, I was automatically deploying via triggers with CloudBuild. Each is the de facto standard unit testing framework for its respective language. If you're in a rush, just copy the sample configuration below into a. 3-5 years of database management experience using relational and/or NoSQL database technologies. With comments, we will explain in detail how to map HTTP requests, how to pass parameters, and how to write unit tests in spring MVC. A common source of confusion for new software testers is the difference between unit testing and module testing. In learning Go, I found cdarwin/go-koans, which helped me to reflect on the philosophy of golang, the Go programming language. NET pattern for unit tests is to have a test project for each production (regular) project in your codebase. Unit Testing LifeCyle: Unit Testing Techniques: Black Box Testing - Using which the user interface, input and output are tested. Add Moq to the unit test project, using NuGet. Unit Testing is now a fixture on the Microsoft Visual Studio landscape. Later on you decide to refactor the architecture so that functionality of B will be split among A and C. Unit tests are basically written and executed by software developers to make sure that code meets its design and requirements and behaves as expected. Unit Testing Principles, Patterns and Practices teaches you to design and write tests that target the domain model and other key areas of your code base. This means :- sonarqube don't have any info about your project. Normally, the "unit" refers to a function, but it doesn't necessary. Feature tests may test a larger portion of your code, including how several objects interact with each other or even a full HTTP request to a JSON endpoint. As mentioned previously, when a new book is added to the library, we store it to the database and send notifications to the readers. To run the Test Cases, open Test Explorer and click to Run All button and you will find that all test cases pass successfully as shown in below image. Creating unit test using a real DbContext is a pain because we have to mock the entire context to achieve this. No unit tests anywhere in the application. The various groups of tools are: Helpers to create an in-memory Sqlite database for unit testing. A unit is the smallest testable part of any software. I haven't implemented the GetItem method, but the idea would be that I setup an instance of SitecoreFakeDb with the item(s) and then the CUT should be able to fetch the item by id. UNIT TESTING – “testing + testify” What is Unit Testing? Unit testing is a software development process in which the smallest testable parts of an application, called units, are individually and independently scrutinized for proper operation. Open Visual Studio 2013 and create a new database project called FabricsDatabase. Test should be written before coding the production code. I actually don't have too much experience with unit testing and databases. There are 2 ways to test your database: On an Android device. If any tests fail, then the build fails. Unit testing provides a structured and automated way of testing individual components of a system. Go comes with various tools, and Gogland integrates them right into the IDE. This post will cover database, unit testing, API testing, example application and essentially everything you need for a real world project. Thus emphasizing true unit tests as part of your development methodology will boost your productivity. This includes running a single test, all tests from the selected class, all tests against the selected database, and all tests on all databases on the selected SQL Server. Under "Import Attachments," check the "Download and import file attachments" box and click submit. The goal here is to connect to the NoSQL database, Couchbase, retrieve some data, and create some data. Test should be written before coding the production code. A Comprehensive List Of Data Testing Tools With Features And Comparison. It supports test automation, sharing of setup and shutdown code for tests, aggregation of tests into collections, and independence of the tests from the reporting framework. The SQL unit testing approach allows us to test individual and programmable part of database objects such as stored procedures, functions, triggers and schema. In this chapter I expand on them and provide a more focused treatment of testing with databases. November 2018. In this article I want to look at using in-memory database to simulate the database when you are unit testing. I’m a big fan of testing, specifically unit testing and TDD (done correctly, of course). The preferred. After refactoring your code, it is ready for unit testing. Database testing should be distinguished from strategies to deal with other problems such as database crashes, broken insertions, deletions or updates. I don't find any reference to get started with unit testing of unix domain sockets. Database testing is one of the major testing which requires tester to expertise in checking tables, writing queries and procedures. 3-5 years of database management experience using relational and/or NoSQL database technologies. "integration tests", , though they're useful, should try write side-effect-free tests can prove code works designed. Below we look at some of what TDD brings to the world of unit testing: Tests are written before the code. A written version of this tutorial can be. To those ends, golang fits this model pretty well, as functions are first class constructs. Net Core Console Application Firstly, I will open Visual Studio 2017, go to File -> New -> Project. Normally, the "unit" refers to a function, but it doesn't necessary. HSQLDB provides two ways of implementing this. Database Unit testing Database unit testing is used for feature testing of our individual modules like stored procedures, triggers or user defined functions etc. To improve the testing experience modules can be used as in functional testing. go counterpart within the same directory. John Resig developed QUnit originally as part of the jQuery library. On the one hand, the benefit of using third-party testing tools is that the development team can instantly create and run unit tests with added features. Creating unit test using a real DbContext is a pain because we have to mock the entire context to achieve this. What is Unit Testing. These are ideal for resilience testing. The best IDE for Golang is Visual Studio Code because it’s cross-platform. For this demonstration, I am using SQL Server 2012 and Visual Studio 2013. Click the test project, open the Database Test Configuration dialog box from the Test menu, add the settings to the dialog box, and rebuild the project. What is Unit Testing. The Golang testing/iotest package provides some Reader implementations which are slow or which cause errors to be thrown half way through reading. 04 Jul 2015, 13:28. The dilemma is that you either need an actual database and load a fixture or you need to mock the database. Cuts down the amount of time spent on unit testing and brings significant cost savings. The primary intent of using golang for Android development is to make life simpler for developers and help them efficient and reliable software. For more information about how these are used in the MediaWiki infrastructure, please refer to the appropriate manual page:. The distinction is that integration tests make sure that any abstractions we build over third-party code work as we expect. Eliminate Database Dependencies in Test-Driven Development. very usefull, but I had to fix at least 5 issues before it was ready for JUNIT and JENKINS. Explained how to do unit testing in golang. Unit testing data access in ASP. Table of Contents 1) Always create unit test specific configuration file 2) Writing unit tests for DAO layer 3) Package Structure. The ORM manages the communications with the database. In the following examples, the job in the test stage runs and GitLab collects the JUnit test report from each job. That doesn't mean you can't test regular, generic JavaScript code with it. Imagine you have three components, A, B and C. If needed, find the needed values defined in database-named. A large portion of modern cloud, networking, and DevOps software is written in Go, for example Docker, Kubernetes, Terraform, etcd, or ist. 1) Always create unit test specific configuration file. By using SQL Server unit testing, we can verify the outcomes of our database code (like Stored Procedures) by writing various test cases. Testing in Django¶ Automated testing is an extremely useful bug-killing tool for the modern Web developer. How to avoid the end-to-end integration test problem with the Repository pattern. As you modify your code, Live Unit Testing lets you know if your code changes are covered by existing tests or if you need to write new tests. Every language serves a special purpose and the very same goes for Golang. Add Moq to the unit test project, using NuGet. rpm for CentOS 7 from EPEL Testing repository. It is nowhere near perfect or complete, but it's good enough for demonstration purposes: avg. Unit testing your Kafka code is incredibly important. *FREE* shipping on qualifying offers. The distinction is that integration tests make sure that any abstractions we build over third-party code work as we expect. This includes running a single test, all tests from the selected class, all tests against the selected database, and all tests on all databases on the selected SQL Server. Database "unit-testing" is an oxymoron, by definition of unit-testing (testing a unit in isolation). 1 - Updated 7 days ago - 17. Official packaging of Jasmine's core. Unit testing mainly focus on the testing the functionality of individual units only and does not uncover the issues arises when different modules are interacting with each other. The Golang testing/iotest package provides some Reader implementations which are slow or which cause errors to be thrown half way through reading. Setting up SSDT Database Projects and tSQLt January 8, 2014 Previously I’ve written about the database unit testing framework tSQLt, you can read about it here , there is also an excellent Pluralsight course by Dave Green ( blog | twitter ) which you can find here. How to assert values in golang unit tests. Let us say that we want to test a stored procedure called uspRankCustomer that we created in a previous blog post. As this article is a follow-up to previous article in these series Ultimate Setup for Your Next Golang Project , so if you didn't read that one, then you might want to. There are at least two methods of developing database unit tests: The first method is related to SQL Server Data Tools package which in integrated with Visual Studio. There many new features that go with this newest version, if you’re interested in reading more, read this blog, “13 new features in Toad® for Oracle 13. What is Unit Testing. categoryLen should be named categoriesLen since asking for the length of a single category doesn't make sense. But you can also use Visual Studio 2010 or Visual Studio 2012. rpm for CentOS 7 from EPEL Testing repository. How would I go about testing this, without hitting a real database, which can fail beyond my control (thus creating false fails in the test)?. I love Go but the one thing I don’t like so much about it is the approach that most people seem to be taking to testing. Unit Testing Golang Code Calling Elasticsearch There is an amazing Elasticsearch client for Go and in Working With Elasticsearch I demonstrated with example how to index and search for documents using it. Here is a great (and fast) way to unit test your Entity Framework entities while using maximum flexibility. Deanna Dicken provides a look at database unit testing development within Visual Studio 2010. These are ideal for resilience testing. For Golang, there are also many different plugins available. At the time, we noted that our ComicShop project wasn't in the best form for unit testing, since the HomeController accessed the database (in which the comic books are stored) directly. Add Moq to the unit test project, using NuGet. Golang, via the standard Go database / SQL package has excellent support for relational databases like MySQL, MS SQL Server, Oracle and Postgres, there are also excellent Golang drivers for NoSQL databases like MongoDB and Redis. I get a lot of positive feedback about my posts via twitter or within the comments. Update() that I would like to mock to return nil. ) (Addendum - I recently ran into an issue with the query of the database in the custom_DB_functions. The type tester has a bad name since that name sounds active, as if the type could actually test something. Download golang-github-3rf-mongo-lint-unit-test-devel-0-0. So there's some common elements, but there are also differences. By the end of this tutorial: You will have a stronger understanding as to how to test your Go systems; You will know how to separate your unit and your integration tests. categoryLen should be named categoriesLen since asking for the length of a single category doesn't make sense. Database testing mainly deals with finding errors in the databases so as to eliminate them. Learn how to do unit testing on a Golang application that includes basic functions as well as API endpoints built with the Gorilla mux routing package. Strong experience with Agile methodology. It is intended to work with go test command with optional parameters to accept the go file to be tested. Insertion and querying works as expected, however I have an issue testing the query method using unit test. however, not call doing unit test, because unit tests definition should not touch external resources databases, file systems, , other "integration points". – Aaron Greenlee Apr 30 '16 at 1:27 He is expecting to test talking to a database (external system) not a isolated unit of code then it is a integration test. using mocks for testing discourages the use of database-specific features (this is a biggie) "But setting up and tearing down a real database is hard and manual". The dilemma is that you either need an actual database and load a fixture or you need to mock the database. Any function within this file that stats with Test will be tested. The latest release (SQL Test 3) incorporates SQL Cover , an open source SQL code coverage library, written by Ed Elliott with support from Redgate. Local Unit Testing for Java 8 Unit testing allows you to check the quality of your code after you've written it, but you can also use unit testing to improve your development process as you go. If you want to reap the benefits of mutation testing then speed of execution is an essential. ARIF MAHMUD has 8 jobs listed on their profile. net web page name addCustomer. This course, Building a Pragmatic Unit Test Suite, is going to show you how to do that. In this tutorial, we saw how to do that with the Python Unittest and pytest modules. It is a set of function for unit testing Powershell functions. In this blog post, I will give an introduction about unit testing fundamentals and the basic concepts of Unit Testing. To achieve that goal, we will mock the DB interface. An important subject of unit testing is managing external dependencies. tables, stored procedure and it will cause your automated. Every language serves a special purpose and the very same goes for Golang. Learn more about the best Java unit testing frameworks. This extension will run your pester unit test in a build pipeline. Real world solutions in GO This book is not a primer on GO Language (here I suggest “The GO Programming Language” by Donovan & Kernighan, Addison-Wesley) but…. Under "Import Attachments," check the "Download and import file attachments" box and click submit. So here I show you how to get unit testing started from the ground up with SSDT and Visual Studio 2017. For test driven development or just for covering the functionality of your code afterwards, unit tests are pretty essential. Ok, so some people have been asking, Why the Lego on a site about Oracle Unit Testing! Well, the analogy I’m trying to express with lego is that software development is a bit like building a lego house. This is one of the best Golang tutorials in 2020. Unit tests throughout the application that run automatically daily or on demand. All Courses; Combo Courses. They can also be run by a user visiting the godoc web page for the package and clicking the associated "Run" button. To improve the testing experience modules can be used as in functional testing. Statements that don’t return rows should not use Query functions; they should use Exec(). You can choose the cell from that dataset with Row number and Column number properties. jOOQ, however, mostly runs integration tests, as it would be mad not to test jOOQ's internal complexity against an actual database - or 14 different ones, as a matter of fact. Creating unit test using a real DbContext is a pain because we have to mock the entire context to achieve this. These are the unit tests, using MockPlayerDataMapper objects to eliminate the need to connect to a database when running automated tests. The purist in me call tests involving the database integration-testing (or functional-testing depending on the boundaries). I've been working as a startup engineer for four years now. Every second, Pusher’s main pub-sub system handles 9,000 new WebSocket connections. Golang has lots of core language features and libraries that allows much faster development of applications. The subject here specifically relates to database unit testing. In simple words, unit testing means – writing a piece of code (unit test) to verify the code (unit) written for implementing requirements. Open Visual Studio 2013 and create a new database project called FabricsDatabase. The problem stems from the very nature of databases: they are slow, common, persistent, external, and relational. Unit testing is an important skill for programmers. tSQLt is an open source Database Unit Testing framework for SQL Server. This article explains three very important concepts called Stub, Mock and Fake in terms of unit testing and will see how they are used depending on the scenario. The goal of Unit testing is to test the each unit separately and ensure that each unit is working as expected. Now it’s time to write unit tests for our source class Person. Practical Unit Testing with JUnit and Mockito [Tomek Kaczanowski] on Amazon. Nobody loves writing unit tests, but the peace of mind they bring can easily be worth the extra work. Eliminate Database Dependencies in Test-Driven Development. I get a lot of positive feedback about my posts via twitter or within the comments. Unit tests can be quite useless. It guarantees that a software build will break if an architectural violation is introduced. As this article is a follow-up to previous article in these series Ultimate Setup for Your Next Golang Project , so if you didn't read that one, then you might want to. The end goal here is to get your login - which is a guid. Let’s set up the test project and write test code. Next, we use spring MVC to implement a set of restful APIs for user object operations. I will also give an example of a very simple unit test in ABAP, covering positive and negative scenario. Search in Access Database Unit Testing A Golang Application That Includes HTTP - Duration: 18:49. Cuts down the amount of time spent on unit testing and brings significant cost savings. You guys should definitely check out my Golang tutorial if you all want to learn such cool stuff in Go. After having the implementation above, we will write write a test and mock DB dependency. Hi, If you feel this topic would fit better in the EF section of the forums feel free to move it. you need to setup your project in sonarqube. Pester will enable you to test your Powershell scripts from within Powershell. To compound it, I was automatically deploying via triggers with CloudBuild. Golang, via the standard Go database / SQL package has excellent support for relational databases like MySQL, MS SQL Server, Oracle and Postgres, there are also excellent Golang drivers for NoSQL databases like MongoDB and Redis. I am new to Unit testing in Xamarin Forms, In my solution, I have 1. Open Visual Studio 2013 and create a new database project called FabricsDatabase. Unit Testing Criteria Problem with Database Unit Testing Automatic Call RecreateDBSchema() to ensure that the schema is first set up, and then set the initial database state via dynamic SQL statements, or running a SQL script with the RunScript() method. HandlerFunc and http. Testing Databases with JUnit and Hibernate Part 1: One to Rule them There is little support for testing the database of your enterprise application. Unit tests are crucial to long-term success of a project yet almost never taught formally. T), where Xxx is a name of your. I use the same template again and again, it's quick to do and makes sure that the basic operations work. Unit Testing exec. So why exactly should someone learn Golang? Well, Golang was built by Google to help solve problems faced by developers at google! At Google, lots of big. Andrew Gerrand 7 May 2015 Introduction. Avoid myriad of problems that occur when one test case corrupts the database and causes subsequent tests to fail or exacerbate the damage. NOTE: The techniques are explained in much more details in chapter 15 of the book Entity Framework in Action. Test Runner.