Add test scenario

sbt/src/sbt-test/actions/remote-cache/build.sbt

@@ -0,0 +1,59 @@
+import sbt.internal.remotecache.CustomRemoteCacheArtifact
+
+lazy val root = (project in file("."))
+  .configs(CustomArtifact)
+  .settings(
+    name := "my-project",
+    scalaVersion := "2.12.11",
+    pushRemoteCacheTo := Some(
+      MavenCache("local-cache", (ThisBuild / baseDirectory).value / "remote-cache")
+    ),
+    remoteCacheId := "fixed-id",
+    remoteCacheIdCandidates := Seq("fixed-id"),
+    pushRemoteCacheConfiguration := pushRemoteCacheConfiguration.value.withOverwrite(true),
+    pushRemoteCacheConfiguration / remoteCacheArtifacts += {
+      val art = (CustomArtifact / artifact).value
+      val packaged = CustomArtifact / packageCache
+      val extractDirectory = (CustomArtifact / sourceManaged).value
+
+      CustomRemoteCacheArtifact(art, packaged, extractDirectory, preserveLastModified = false)
+    },
+    Compile / sourceGenerators += Def.task {
+      val extractDirectory = (CustomArtifact / sourceManaged).value
+      val output = extractDirectory / "HelloWorld.scala"
+      IO.write(output, "class HelloWorld")
+      Seq(output)
+    }.taskValue
+  )
+  .settings(customArtifactSettings)
+
+lazy val CustomArtifact = config("custom-artifact")
+
+def customArtifactSettings: Seq[Def.Setting[_]] = {
+  val classifier = "custom-artifact"
+
+  inConfig(CustomArtifact)(
+    Seq(
+      packageOptions := {
+        val n = name.value + "-" + classifier
+        val ver = version.value
+        val orgName = organizationName.value
+
+        List(Package.addSpecManifestAttributes(n, ver, orgName))
+      },
+      sourceManaged := (Compile / target).value / "custom-artifact-gen",
+      mappings := {
+        val sourcesDir = sourceManaged.value
+        val sources = sourcesDir.allPaths.pair(Path.relativeTo(sourcesDir))
+
+        sources
+      },
+      packageConfiguration := Defaults.packageConfigurationTask.value,
+      packageCache := Defaults.packageTask.value,
+      artifact := Artifact(moduleName.value, classifier),
+      packagedArtifact := (artifact.value -> packageCache.value),
+      artifactPath := Defaults.artifactPathSetting(artifact).value,
+      artifactName := Artifact.artifactName
+    )
+  )
+}

sbt/src/sbt-test/actions/remote-cache/src/main/scala/MyClass.scala

@@ -0,0 +1 @@
+object MyClass

sbt/src/sbt-test/actions/remote-cache/src/test/scala/MyTest.scala

@@ -0,0 +1 @@
+object MyTest

sbt/src/sbt-test/actions/remote-cache/test

@@ -0,0 +1,58 @@
+> compile
+> pushRemoteCache
+
+# Generated sources, compiled classes
+$ exists target/custom-artifact-gen/HelloWorld.scala
+$ exists target/scala-2.12/classes/HelloWorld.class
+$ exists target/scala-2.12/classes/MyClass.class
+$ exists target/scala-2.12/classes/MyClass$.class
+$ exists target/scala-2.12/zinc/inc_compile_2.12.zip
+$ exists target/scala-2.12/test-classes/MyTest.class
+$ exists target/scala-2.12/test-classes/MyTest$.class
+$ exists target/scala-2.12/test-zinc/inc_compile_2.12.zip
+
+# Pom file
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id.pom
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id.pom.md5
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id.pom.sha1
+
+# Compile
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-cached-compile.jar
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-cached-compile.jar.md5
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-cached-compile.jar.sha1
+
+# Test
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-cached-test.jar
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-cached-test.jar.md5
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-cached-test.jar.sha1
+
+# Custom artifact
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-custom-artifact.jar
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-custom-artifact.jar.md5
+$ exists remote-cache/my-project/my-project_2.12/0.0.0-fixed-id/my-project_2.12-0.0.0-fixed-id-custom-artifact.jar.sha1
+
+> clean
+
+$ absent target/custom-artifact-gen/HelloWorld.scala
+$ absent target/scala-2.12/classes/HelloWorld.class
+$ absent target/scala-2.12/classes/MyClass.class
+$ absent target/scala-2.12/classes/MyClass$.class
+$ absent target/scala-2.12/zinc/inc_compile_2.12.zip
+$ absent target/scala-2.12/test-classes/MyTest.class
+$ absent target/scala-2.12/test-classes/MyTest$.class
+$ absent target/scala-2.12/test-zinc/inc_compile_2.12.zip
+
+> pullRemoteCache
+
+# Files extracted from the cache artifacts
+$ exists target/custom-artifact-gen/HelloWorld.scala
+$ exists target/scala-2.12/classes/HelloWorld.class
+$ exists target/scala-2.12/classes/MyClass.class
+$ exists target/scala-2.12/classes/MyClass$.class
+$ exists target/scala-2.12/zinc/inc_compile_2.12.zip
+$ exists target/scala-2.12/test-classes/MyTest.class
+$ exists target/scala-2.12/test-classes/MyTest$.class
+$ exists target/scala-2.12/test-zinc/inc_compile_2.12.zip
+
+# Artifacts can be pushed twice (enabled overriding)
+> pushRemoteCache