How to use this.getClass.getResource from a test

[alexklibisz]

When using SBT, I have generally used this.getClass.getResource to access files from the resources directory within tests. This doesn't seem to work with scala-cli.

Here's a small example project:

$ tree
.
├── project.scala
└── src
    └── test
        ├── resources
        │   └── app
        │       └── test.txt
        └── scala
            └── app
                └── Test.scala

6 directories, 3 files
$ cat project.scala
//> using scala 3.3.0
//> using test.resourceDir ./src/test/resources
//> using test.dep org.scalatest::scalatest::3.2.16

$ cat src/test/resources/app/test.txt
Test
$ cat src/test/scala/app/Test.scala
package app

import org.scalatest.freespec.AnyFreeSpec

class Test extends AnyFreeSpec {
  "getResource" in {
    for {
      attempt <- List(
	"test.txt", "/test.txt",
	 "app/resource.txt", "/app/test.txt",
	 "resources/app/test.txt", "/resources/app/test.txt"
	)
    } {
      println(this.getClass.getResource(attempt))
    }
  }
}

$ scala-cli test .
Test:
null
null
null
null
null
null
- getResource
Run completed in 209 milliseconds.
Total number of tests run: 1
Suites: completed 1, aborted 0
Tests: succeeded 1, failed 0, canceled 0, ignored 0, pending 0
All tests passed.

I try to access the test.txt resource several ways, and all of them return null.

I've also tried different settings of test.resourceDir, but get the same result.

[lwronski]

@alexklibisz Thanks for opening discussion, This is a bug that was fixed #2235.

As a workaround, you can use the resourceDir directive in your sources, but it also include resources into main scope:

//> using resourceDir ./src/test/resources

Alternatively, you can test the fixed version by running the nightly version of scala-cli:

scala-cli --cli-version nightly test .

[alexklibisz]

Confirming that this works with the nightly. Thanks!

$ scala-cli --cli-version nightly test .
Fetching Scala CLI 1.0.1-44-g92f069c1-SNAPSHOT
Compiling project (Scala 3.3.0, JVM)
Compiled project (Scala 3.3.0, JVM)
Downloading 2 dependencies and one internal dependency
Compiling project (test, Scala 3.3.0, JVM)
Compiled project (test, Scala 3.3.0, JVM)
Test:
file:/Users/alex/Desktop/scala-cli-resources/.scala-build/scala-cli-resources_0d8cb35018_98f7a0bcf5/classes/test/app/test.txt
null
null
file:/Users/alex/Desktop/scala-cli-resources/.scala-build/scala-cli-resources_0d8cb35018_98f7a0bcf5/classes/test/app/test.txt
null
null
- getResource
Run completed in 217 milliseconds.
Total number of tests run: 1
Suites: completed 1, aborted 0
Tests: succeeded 1, failed 0, canceled 0, ignored 0, pending 0
All tests passed.