Add test for defaultLinuxLogsLocation

Add a new test 'debian/log-directory' to check that a custom setting for
defaultLinuxLogsLocation is correctly applied.

src/sbt-test/debian/log-directory/build.sbt

@@ -0,0 +1,40 @@
+import java.nio.file.Files
+import java.nio.file.Paths
+import java.nio.file.LinkOption.NOFOLLOW_LINKS
+
+import NativePackagerKeys._
+import com.typesafe.sbt.packager.archetypes.ServerLoader
+
+packageArchetype.java_server
+
+serverLoading in Debian := ServerLoader.Upstart
+
+daemonUser in Debian := "root"
+
+mainClass in Compile := Some("empty")
+
+name := "debian-test"
+
+version := "0.1.0"
+
+maintainer := "Josh Suereth <joshua.suereth@typesafe.com>"
+
+packageSummary := "Test debian package"
+
+packageDescription := """A fun package description of our software,
+  with multiple lines."""
+
+defaultLinuxLogsLocation := "/non-standard/log"
+
+InputKey[Unit]("check-softlink") <<= inputTask { (argTask: TaskKey[Seq[String]]) =>
+  (argTask) map { (args: Seq[String]) =>
+    assert(args.size >= 2, "Usage: check-softlink link to target")
+    val link = Paths.get(args(0))
+    val target = Paths.get(args(args.size - 1))
+    assert(Files.exists(link, NOFOLLOW_LINKS),
+        "Expected symbolic link '" + link + "' does not exist")
+    assert(Files.isSymbolicLink(link), "'" + link + "' should be a symbolic link")
+    assert(Files.readSymbolicLink(link) equals target,
+        "Symbolic link '" + link + "' should point to '" + target + "'")
+  }
+}

src/sbt-test/debian/log-directory/project/plugins.sbt

@@ -0,0 +1 @@
+addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % sys.props("project.version"))

src/sbt-test/debian/log-directory/test

@@ -0,0 +1,15 @@
+# Run the debian packaging.
+> debian:package-bin
+$ exists target/debian-test-0.1.0.deb
+
+$ exists target/debian-test-0.1.0/etc
+$ exists target/debian-test-0.1.0/etc/default/debian-test
+$ exists target/debian-test-0.1.0/etc/init/debian-test.conf
+
+# Check defaults
+$ exists target/debian-test-0.1.0/DEBIAN/prerm
+$ exists target/debian-test-0.1.0/DEBIAN/postinst
+
+# Check that the non-standard log directory was used
+$ exists target/debian-test-0.1.0/non-standard/log/debian-test
+> check-softlink target/debian-test-0.1.0/usr/share/debian-test/logs points to /non-standard/log/debian-test