IntelliJ IDEA Setup

The following steps can be used to configure IntelliJ IDEA to build and test Daffodil:

1. If not already installed, install the Scala plugin from JetBrains to add SBT and Scala support.
   
   
2. With the Daffodil repository checked out, select
   
      File > New > Project from Existing Sources...
   
   and select the Daffodil repository directory.  Note that symlinks seem to cause failures to import, so use a absolute physical path to the daffodil repository directory.

1. We want to configure the project to use SBT for configuration and building, so select:
   
      Import project from external model
   
   and select sbt.
   
   
2. Set the following settings:
   
   
   1. Download Library sources: Checked
      
      
   2. Download sbt sources: Unchecked
      
      
   3. Use sbt shell for imports: Checked
      
      
   4. Use sbt shell for builds: Checked
      
      
   5. Allow overriding sbt version: Unchecked
      
      
   6. Global sbt settings > Maximum heap size: 6144 MB
     
3. Click Finish.
   
   
4. Exit IntelliJ and restart it, selecting the Daffodil project.
   
   
5. An alert will display stating "sbt projects need to be imported". Select Enable Auto-Import.
   
   
6. After the sync is complete in the Build tab, ensure that the project builds:
   
      Build > Build Project


7. To add a configuration to run all JUnit tests, select:
   
      Run > Edit Configurations > + (plus sign) > JUnit
   
   and apply the following settings:
   
   
   1. Name: All Daffodil Tests
      
      
   2. Test Kind: Pattern
      
      
   3. Pattern: ^(?!.*TestCLI.*).*$
      
      
   4. Search for tests: In whole project
     
8. Run tests via:
   
      Run > All Daffodil Tests

To setup to work with Daffodil/XML, you can start with the following:

1. Go to File > Settings > Editor > File Types
2. In the Recognized file types box, scroll down to XML , select it and under the Registered patterns box, click the + sign, and add *.dfdl.xsd. Repeat for *.tdml.

To be able to run CLI Tests, you either can try:

1. IntelliJ Idea Ultimate. You can get a free license
   1. if you're an apache committer: https://www.jetbrains.com/community/opensource/#partner
   2. if you're a student/teacher: https://www.jetbrains.com/community/education/#students
   3. if you're part of an open source project: https://www.jetbrains.com/community/opensource/#support
2. IntelliJ Idea Community as described in this comment (works for some, but not all).