Path.toBeAnEmptyDirectory

[robstoll]

Platform (all, jvm, js): all
Extension (none, kotlin 1.3): none

Code related feature

expect(path).toBeAnEmptyDirectory()

//instead of

expect(path)
  .toBeADirectory()
  .feature("findFirstFile", { Files.list(this).use { it.findFirst() } }) {
    isEmpty()
  }

Following the things you need to do:

logic

• extend PathAssertions with a function toBeEmptyDirectory (see other functions as a guideline)
• implement toBeEmptyDirectory in DefaultPathAssertions.kt -- bonus use newDirectoryStream instead and list all files as failureHint in case the iterator.hasNext()

api-fluent

• provide a fun toBeAnEmptyDirectory in a new file called pathExpectations.kt (see for instance isDirectory in pashAssertions.kt as a guideline)
• add @since 0.16.0 (adapt to current milestone) to KDOC
• add toBeAnEmptyDirectory to PathExpectationsSpec in specs-common adopt the spec in api-fluent

api-infix

• provide a fun toBe which expects anEmptyDirectory in a new file called pathExpectations.kt (see toBe aDirectory in pathAssertions.kt as a guideline)
• add @since 0.16.0 (adapt to current milestone) to KDOC
• add toBeAnEmptyDirectory to PathExpectationsSpec in specs-common adopt the spec in api-infix

Your first contribution?

• Write a comment I'll work on this if you would like to take this issue over.
  This way we get the chance to revise the description in case things have changed in the meantime, we might give you additional hints and we can assign the task to you, so that others do not start as well.
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[Samuellucas97]

I'll work on this

[robstoll]

@Samuellucas97 I have updated the description. Let me know in case you need help

[robstoll]

@Samuellucas97 let us know in case you need help

[mai2412]

I'd like to try this, toBeEmptyDirectory simply asserts whether the path points to an empty directory, correct?

[robstoll]

@mai2412 exactly. Use the existing functionality for toBeADirectory so that the reporting in error cases is already advanced

[mai2412]

Do you mean isDirectory? I can't find toBeADirectory

[robstoll]

@mai2412 yes, isDirectory in DefaultPathAssertions. Sorry