What is DbUnit testing?

What is DbUnit testing?

DbUnit is a JUnit extension (also usable with Ant) targeted at database-driven projects that, among other things, puts your database into a known state between test runs. DbUnit can also help you to verify that your database data match an expected set of values.

How does DbUnit work?

DbUnit features

1. It exports data from the database into flat XML files, so that data for each test can be loaded from these files.
2. It cleans or deletes any corrupted/changed data (in the database) before performing the test.
3. It loads fresh data pertaining to the current test into the database.

What is database unit testing?

April 8, 2019 by Esat Erkec. SQL unit testing is a testing method which allows us to test the smallest, atomic programmable part of a database object. SQL unit testing plays a key role in the modern database development cycle because it allows us to test individual parts of the database objects work as expected.

How do you mock a database in Java?

There are two ways which we can use to mock the database connection. The first one is by mocking the java. sql classes itself and the second way is by mocking the Data Access Objects (DAO) classes which talks to the database. First we will see how we can mock the java.

What is Unitils?

Unitils is an open source library aimed at making unit and integration testing easy and maintainable. It is divided into several modules, each of them providing extra support for a certain aspect of your unit and integration tests.

What is MRUnit in Hadoop?

Apache MRUnit ™ is a Java library that helps developers unit test Apache Hadoop map reduce jobs. The example used in the post looks at the Weather dataset and work with the year and temperature extracted from the data. Obviously the example can be easily translated for your specific data.

How can I learn database testing?

How to Test the Database (Step-by-step Process)

1. Step #1) Prepare the environment.
2. Step #2) Run a test.
3. Step #3) Check test result.
4. Step #4) Validate according to the expected results.
5. Step #5) Report the findings to the respective stakeholders.

What are the tools used for database testing?

Database Testing Tools

• Database Benchmark.
• Database Rider.
• Db stress.
• DbUnit.
• DB Test Driven.
• HammerDB.
• JdbcSlim.
• JDBC (Java DataBase Delta Testing)

What is stubbing in testing?

What is stub testing? Stubbing, like mocking, means creating a stand-in, but a stub only mocks the behavior, but not the entire object. This is used when your implementation only interacts with a certain behavior of the object.

What is the difference between mock and spy?

Both can be used to mock methods or fields. The difference is that in mock, you are creating a complete mock or fake object while in spy, there is the real object and you just spying or stubbing specific methods of it. When using mock objects, the default behavior of the method when not stub is do nothing.

Is Unitil gas or electric?

Unitil Corporation is an interstate electricity and natural gas utility company that serves the areas in New Hampshire, Massachusetts and Maine.

How many employees does Unitil have?

With approximately 1.1 million customers without power from #HurricaneIda, Unitil has joined over 25,000 workers from at least 32 states and D.C. in offering mutual aid for the power restoration effort in Louisiana.

How is dbunit used in a test system?

Keep in mind that, in our example, DBUnit will reinitialize the database with the given test data before each test method execution. There are multiple ways to configure this via getSetUpOperation and getTearDownOperation:

Who is the creator of the dbunit framework?

DbUnit is an open source Framework created by Manuel Laflamme. This is a powerful tool for simplifying Unit Testing of the database operations. This tutorial explains the concepts of this testing tool with proper example.

How to define a database schema in dbunit?

Next, let’s define a database schema: 3.1. Defining the Initial Database Contents DBUnit lets us define and load our test dataset in a simple declarative way. We define each table row with one XML element, where the tag name is a table name, and attribute names and values map to column names and values respectively.

What does the refresh and delete _ all do in dbunit?

The REFRESH operation, tells DBUnit to refresh all its data. This will ensure that all caches are cleared up and our unit test gets no influence from another unit test. The DELETE_ALL operation ensures that all the data gets removed at the end of each unit test.