Using scala betterfiles API to simplify operations with files. / published by https://github.com/dacr/code-examples-manager #df768884-8296-467e-944d-525fafc6ce96/3c3de22654bc0e0b7d04ab52dec316e414f5bba6

filesio-betterfiles-basics.sc

// summary : Using scala betterfiles API to simplify operations with files.
// keywords : scala, betterfiles, file, io
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : df768884-8296-467e-944d-525fafc6ce96
// created-on : 2020-05-31T19:54:52Z
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala  "3.3.0"
//> using dep "org.scalatest::scalatest:3.2.16"
//> using dep "com.github.pathikrit::better-files:3.9.2"
//> using objectWrapper
// ---------------------

import org.scalatest._, wordspec._, matchers._, OptionValues._
import better.files._
import better.files.Dsl._

class BetterFilesRecipesTest extends AnyWordSpec with should.Matchers {
  override def suiteName: String = "BetterFilesRecipesTest"

  "list files" can {
    "standard way" should {
      "list files in a given directory" in {
        pwd.list.map(_.name).toList should contain allOf("file-path-tools.sc", "filesio-betterfiles-basics.sc", "filesio-default-basics.sc")
      }
      "filter files extensions" in {
        pwd.list.filter(_.name.endsWith(".sc")).map(_.name).toList should contain allOf("file-path-tools.sc", "filesio-betterfiles-basics.sc", "filesio-default-basics.sc")
      }
    }
    "globbing" should {
      "find and filter files in the given directory" in {
        pwd.glob("*.sc").size should be > 0
      }
      "find and filter files all files in the given hierarchy" in {
        pwd.parent.glob("http/**/*.md").map(_.name).toList should contain allElementsOf List("index.md")
      }
      "should find more files in the hierarchy than in the given directory" in {
        val curDir = pwd.glob("*.sc", includePath = false).toList // in current dir only
        val subDir = pwd.glob("**/*.sc", includePath = false).toList // in all the hierarchy
        val inTree = pwd.glob("*.sc", includePath = true).toList // default - in all the hierarchy
        val inTree2 = pwd.glob("**/*.sc", includePath = true).toList // in the hierarchy but not the current dir
        inTree.size should be > curDir.size
        inTree.map(_.name).sorted should contain allOf("file-path-tools.sc", "filesio-betterfiles-basics.sc", "filesio-default-basics.sc")
        inTree2.map(_.name).sorted should contain noneOf("file-path-tools.sc", "filesio-betterfiles-basics.sc", "filesio-default-basics.sc")
      }
    }
  }

  "file IO" can {
    "read file" should {
      "be very easy" in {
        val content = (pwd / "filesio-betterfiles-basics.sc").contentAsString
        content should include regex "be very easy"
      }
    }
    "write file" should {
      "be also very easy" in {
        val newContent =
          """# Some new title
            |with some content
            |""".stripMargin

        val tmpFile = File.newTemporaryFile()
        tmpFile.overwrite(newContent)
        //import better.files.Dsl.SymbolicOperations
        //tmpFile < newContent  // alternative
        tmpFile.contentAsString shouldBe newContent
      }
    }
  }


}

org.scalatest.tools.Runner.main(Array("-oDF", "-s", classOf[BetterFilesRecipesTest].getName))