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Add cache integration testing
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‎test/spec/cache_spec.rb‎

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# frozen_string_literal: true
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require_relative 'spec_helper'
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describe 'Scala buildpack' do
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it 'caches compiled artifacts between builds' do
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new_default_hatchet_runner('sbt-0.11.7-play-3.x-scala-2.13.x').tap do |app|
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app.deploy do
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# First build should compile everything from scratch
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expect(clean_output(app.output)).to match(Regexp.new(<<~REGEX, Regexp::MULTILINE))
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remote: -----> Scala app detected
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remote: -----> Installing Azul Zulu OpenJDK 21.0.[0-9]+
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remote: -----> Running: sbt compile stage
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remote: Downloading sbt launcher for 1.11.7:
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remote: From https://repo1.maven.org/maven2/org/scala-sbt/sbt-launch/1.11.7/sbt-launch-1.11.7.jar
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remote: To /tmp/scala_buildpack_build_dir/.sbt_home/launchers/1.11.7/sbt-launch.jar
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remote: Downloading sbt launcher 1.11.7 md5 hash:
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remote: From https://repo1.maven.org/maven2/org/scala-sbt/sbt-launch/1.11.7/sbt-launch-1.11.7.jar.md5
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remote: To /tmp/scala_buildpack_build_dir/.sbt_home/launchers/1.11.7/sbt-launch.jar.md5
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remote: /tmp/scala_buildpack_build_dir/.sbt_home/launchers/1.11.7/sbt-launch.jar: OK
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remote: \\[info\\] \\[launcher\\] getting org.scala-sbt sbt 1.11.7 \\(this may take some time\\)...
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remote: \\[info\\] \\[launcher\\] getting Scala 2.12.20 \\(for sbt\\)...
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remote: \\[info\\] welcome to sbt 1.11.7 \\(Azul Systems, Inc. Java 21.0.[0-9]+\\)
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remote: \\[info\\] loading global plugins from /tmp/scala_buildpack_build_dir/.sbt_home/plugins
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remote: \\[info\\] compiling 1 Scala source to /tmp/scala_buildpack_build_dir/.sbt_home/plugins/target/scala-2.12/sbt-1.0/classes ...
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remote: \\[info\\] Non-compiled module 'compiler-bridge_2.12' for Scala 2.12.20. Compiling...
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remote: \\[info\\] Compilation completed in .*s.
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remote: \\[info\\] done compiling
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remote: \\[info\\] loading settings for project scala_buildpack_build_dir-build from plugins.sbt...
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remote: \\[info\\] loading project definition from /tmp/scala_buildpack_build_dir/project
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remote: \\[info\\] loading settings for project root from build.sbt...
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remote: \\[info\\] __ __
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remote: \\[info\\] \\\\ \\\\ ____ / /____ _ __ __
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remote: \\[info\\] \\\\ \\\\ / __ \\\\ / // __ `// / / /
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remote: \\[info\\] / / / /_/ // // /_/ // /_/ /
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remote: \\[info\\] /_/ / .___//_/ \\\\__,_/ \\\\__, /
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remote: \\[info\\] /_/ /____/
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remote: \\[info\\]
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remote: \\[info\\] Version 3.0.9 running Java 21.0.[0-9]+
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remote: \\[info\\]
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remote: \\[info\\] Play is run entirely by the community. Please consider contributing and/or donating:
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remote: \\[info\\] https://www.playframework.com/sponsors
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remote: \\[info\\]
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remote: \\[info\\] Executing in batch mode. For better performance use sbt's shell
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remote: \\[info\\] compiling 7 Scala sources and 1 Java source to /tmp/scala_buildpack_build_dir/target/scala-2.13/classes ...
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remote: \\[info\\] done compiling
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remote: \\[success\\] Total time: .* s, completed .*
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remote: \\[info\\] Wrote /tmp/scala_buildpack_build_dir/target/scala-2.13/sbt-0-11-7-play-3-x-scala-2-13-x_2.13-1.0-SNAPSHOT.pom
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remote: \\[success\\] Total time: .*
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remote: -----> Collecting dependency information
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remote: -----> Dropping ivy cache from the slug
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remote: -----> Dropping sbt boot dir from the slug
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remote: -----> Dropping sbt cache dir from the slug
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remote: -----> Dropping compilation artifacts from the slug
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remote: -----> Discovering process types
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remote: Procfile declares types -> \\(none\\)
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remote: Default types for buildpack -> web
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remote:
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remote: -----> Compressing...
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REGEX
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app.commit!
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app.push!
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# Second build should use cached artifacts and doesn't recompile previously compiled application files
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expect(clean_output(app.output)).to match(Regexp.new(<<~REGEX, Regexp::MULTILINE))
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remote: -----> Scala app detected
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remote: -----> Installing Azul Zulu OpenJDK 21.0.[0-9]+
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remote: -----> Running: sbt compile stage
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remote: \\[info\\] welcome to sbt 1.11.7 \\(Azul Systems, Inc. Java 21.0.[0-9]+\\)
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remote: \\[info\\] loading global plugins from /tmp/scala_buildpack_build_dir/.sbt_home/plugins
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remote: \\[info\\] loading settings for project scala_buildpack_build_dir-build from plugins.sbt...
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remote: \\[info\\] loading project definition from /tmp/scala_buildpack_build_dir/project
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remote: \\[info\\] loading settings for project root from build.sbt...
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remote: \\[info\\] __ __
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remote: \\[info\\] \\\\ \\\\ ____ / /____ _ __ __
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remote: \\[info\\] \\\\ \\\\ / __ \\\\ / // __ `// / / /
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remote: \\[info\\] / / / /_/ // // /_/ // /_/ /
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remote: \\[info\\] /_/ / .___//_/ \\\\__,_/ \\\\__, /
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remote: \\[info\\] /_/ /____/
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remote: \\[info\\]
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remote: \\[info\\] Version 3.0.9 running Java 21.0.[0-9]+
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remote: \\[info\\]
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remote: \\[info\\] Play is run entirely by the community. Please consider contributing and/or donating:
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remote: \\[info\\] https://www.playframework.com/sponsors
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remote: \\[info\\]
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remote: \\[info\\] Executing in batch mode. For better performance use sbt's shell
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remote: \\[success\\] Total time: .* s, completed .*
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remote: \\[info\\] Wrote /tmp/scala_buildpack_build_dir/target/scala-2.13/sbt-0-11-7-play-3-x-scala-2-13-x_2.13-1.0-SNAPSHOT.pom
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remote: \\[success\\] Total time: .*
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remote: -----> Collecting dependency information
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remote: -----> Dropping ivy cache from the slug
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remote: -----> Dropping sbt boot dir from the slug
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remote: -----> Dropping sbt cache dir from the slug
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remote: -----> Dropping compilation artifacts from the slug
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remote: -----> Discovering process types
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remote: Procfile declares types -> \\(none\\)
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remote: Default types for buildpack -> web
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remote:
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remote: -----> Compressing...
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REGEX
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end
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end
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end
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end

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/.gitignore‎

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logs
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target
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/.bsp
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/.idea
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/.idea_modules
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/.classpath
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/.project
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/.settings
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/RUNNING_PID

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/app/controllers/HomeController.scala‎

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package controllers
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import javax.inject._
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import play.api._
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import play.api.mvc._
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@Singleton
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class HomeController @Inject()(val controllerComponents: ControllerComponents) extends BaseController {
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def index() = Action { implicit request: Request[AnyContent] =>
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Ok(views.html.index())
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}
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}

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/app/views/index.scala.html‎

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@()
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@main("Welcome to Play") {
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<h1>Welcome to Play!</h1>
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}

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/app/views/main.scala.html‎

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@(title: String)(content: Html)
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>@title</title>
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</head>
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<body>
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@content
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</body>
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</html>

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/build.sbt‎

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name := """sbt-0.11.7-play-3.x-scala-2.13.x"""
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organization := "com.heroku"
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version := "1.0-SNAPSHOT"
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lazy val root = (project in file(".")).enablePlugins(PlayScala)
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scalaVersion := "2.13.17"
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libraryDependencies += guice
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libraryDependencies += "org.scalatestplus.play" %% "scalatestplus-play" % "7.0.2" % Test

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/conf/application.conf‎

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play.http.secret.key="hG;fgBT`Kd/=MBH75?R:xsP:mv=L2D4<43;SqF_NVb/3IKYCGf5mfHT^kJ?RSk^_"

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/conf/logback.xml‎

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<?xml version="1.0" encoding="UTF-8" ?>
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<!-- https://www.playframework.com/documentation/latest/SettingsLogger -->
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<!DOCTYPE configuration>
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<configuration>
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<import class="ch.qos.logback.classic.encoder.PatternLayoutEncoder"/>
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<import class="ch.qos.logback.classic.AsyncAppender"/>
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<import class="ch.qos.logback.core.FileAppender"/>
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<import class="ch.qos.logback.core.ConsoleAppender"/>
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<appender name="FILE" class="FileAppender">
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<file>${application.home:-.}/logs/application.log</file>
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<encoder class="PatternLayoutEncoder">
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<charset>UTF-8</charset>
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<pattern>%d{yyyy-MM-dd HH:mm:ss} %highlight(%-5level) %cyan(%logger{36}) %magenta(%X{pekkoSource}) %msg%n</pattern>
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</encoder>
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</appender>
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<appender name="STDOUT" class="ConsoleAppender">
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<!--
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On Windows, enabling Jansi is recommended to benefit from color code interpretation on DOS command prompts,
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which otherwise risk being sent ANSI escape sequences that they cannot interpret.
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See https://logback.qos.ch/manual/layouts.html#coloring
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-->
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<!-- <withJansi>true</withJansi> -->
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<encoder class="PatternLayoutEncoder">
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<charset>UTF-8</charset>
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<pattern>%d{yyyy-MM-dd HH:mm:ss} %highlight(%-5level) %cyan(%logger{36}) %magenta(%X{pekkoSource}) %msg%n</pattern>
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</encoder>
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</appender>
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<appender name="ASYNCFILE" class="AsyncAppender">
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<appender-ref ref="FILE"/>
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</appender>
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<appender name="ASYNCSTDOUT" class="AsyncAppender">
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<appender-ref ref="STDOUT"/>
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</appender>
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<logger name="play" level="INFO"/>
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<logger name="application" level="DEBUG"/>
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<root level="WARN">
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<appender-ref ref="ASYNCFILE"/>
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<appender-ref ref="ASYNCSTDOUT"/>
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</root>
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</configuration>

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/conf/messages‎

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# https://www.playframework.com/documentation/latest/ScalaI18N

‎test/spec/fixtures/repos/sbt-0.11.7-play-3.x-scala-2.13.x/conf/routes‎

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# Routes
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# This file defines all application routes (Higher priority routes first)
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# https://www.playframework.com/documentation/latest/ScalaRouting
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# ~~~~
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# An example controller showing a sample home page
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GET / controllers.HomeController.index()
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# Map static resources from the /public folder to the /assets URL path
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GET /assets/*file controllers.Assets.versioned(path="/public", file: Asset)

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