An API for populating a database in unit tests
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README.md

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Build Status

Overview

DbSetup allows populating a database before executing automated integration tests (typically, DAO/Repository automated tests). Although DBUnit, which is a great project, allows doing the same thing and much more, it's also harder to use and setup. And in our experience, in 98% of the cases, DBUnit is only used to pre-populate a database before executing every test method. This is the task on which DbSetup concentrates.

The philosophy of DbSetup is that DAO tests should not have to setup the database, execute tests, and then remove everything from the database. Instead, a single setup method should be used to delete everything from the database (whatever the previous test put in it, or the initial state of the database tables), and then populate it with the data necessary to execute the test.

Another design choice of DbSetup is to provide an easy to use and simple Java API to populate the database, rather than loading data from external XML files. Using a Java API has several advantages:

  • It allows using real Java types as data (longs, enums, etc.)
  • It allows defining default values, looping to generate several similar rows, storing data sets in variables or factorizing their creation using resusable methods
  • It allows viewing the data sets easily, without having to open external files, by storing the data set directly into the test class, or by navigating through classes and methods using the IDE shortcuts.
  • For more complex situations, like cyclic referential integrity constraints between rows, the Java API allows easily integrating SQL statements into the sequence of operations to execute to pre-populate the database. These SQL statements can, for example, disable constraints and re-enable them.

Documentation

The documentation is available at dbsetup.ninja-squad.com. It's hosted by github, from the gh-pages branch.

Bugs and RFEs

To submit bugs or RFEs, use Github.

How to...

build

gradlew build

install the artifacts in your own local Maven repository

gradlew publishToMavenLocal

release a new version of DbSetup

  • Make sure you have a file named gradle.properties under HOME/.gradle, and this file contains the following properties:

    sonatypeUsername=<the sonatype user name>
    sonatypePassword=<the sonatype password>       
    signing.password=<the password used to protect your PGP key configured in the ninjasquad bintray account>
    bintray.key=<the api key of the ninjasquad bintray account>
    
  • Make sure the version of DbSetup in the project's gradle.properties file is the right one. It must not end with -SNAPSHOT

  • Execute

    gradlew clean build bintrayUpload
    

That should upload the artefacts to the ninjasquad's bintray maven repo, sign then with the keypair stored in bintray, and sync it with jcenter and Maven central.

Note: the bintray plugin acts sometimes strangely (hangs, or 400 errors). It can be useful to disable the gradle daemon by passing -no-daemon. Passing --info also helps understanding what's going on.

Note: to check the jar file and pom publication before uploading, you can use

gradlew publish

which will simply publish under the build/repo directory of each project.

License

DbSetup is released under the MIT License.

The MIT License

Copyright (c) 2012-2013, Ninja Squad

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.