Add support for Scala 2.12.0 (#258)

* Add support for Scala 2.12.0

* Update yml indent

* Turn on coverage by default

* Turn on scalaFmtTest again

* Remove call to inThisBuild, enable coverage only for 2.11

* Use oraclejdk8 for scala 2.12.0

* Turn off mima for 2.12 as this is the first release

Author: Piyush Narang

.travis.yml

@@ -3,9 +3,13 @@ sudo: false
 matrix:
   include:
     - scala: 2.10.6
-      script: ./sbt ++$TRAVIS_SCALA_VERSION clean scalafmtTest test mimaReportBinaryIssues
+      script: ./sbt "+++$TRAVIS_SCALA_VERSION clean" "+++$TRAVIS_SCALA_VERSION scalafmtTest" "+++$TRAVIS_SCALA_VERSION test" "+++$TRAVIS_SCALA_VERSION mimaReportBinaryIssues"
 
     - scala: 2.11.8
-      script: ./sbt ++$TRAVIS_SCALA_VERSION clean scalafmtTest coverage test coverageReport mimaReportBinaryIssues
+      script: ./sbt "+++$TRAVIS_SCALA_VERSION clean" "+++$TRAVIS_SCALA_VERSION scalafmtTest" "+++$TRAVIS_SCALA_VERSION test" "+++$TRAVIS_SCALA_VERSION coverageReport" "+++$TRAVIS_SCALA_VERSION mimaReportBinaryIssues"
+
+    - scala: 2.12.0
+      jdk: oraclejdk8
+      script: ./sbt "+++$TRAVIS_SCALA_VERSION clean" "+++$TRAVIS_SCALA_VERSION test"
       after_success:
         - bash <(curl -s https://codecov.io/bash)

build.sbt

@@ -7,10 +7,11 @@ import bijection._
 
 val buildLevelSettings = Seq(
   organization := "com.twitter",
-  crossScalaVersions := Seq("2.10.6", "2.11.8"),
-  scalaVersion := "2.11.8",
+  crossScalaVersions := Seq("2.10.6", "2.11.8", "2.12.0"),
   javacOptions ++= Seq("-source", "1.6", "-target", "1.6"),
   javacOptions in doc := Seq("-source", "1.6"),
+  scalaVersion := "2.11.8",
+  coverageEnabled := (if (scalaVersion.value startsWith "2.11") true else false),
   scalacOptions ++= Seq(
     "-unchecked",
     "-deprecation",
@@ -66,7 +67,6 @@ val buildLevelSettings = Seq(
     )
   )
 )
-inThisBuild(buildLevelSettings)
 
 val sharedSettings = Seq(
   // Publishing options:
@@ -140,8 +140,8 @@ lazy val bijection = {
   Project(
     id = "bijection",
     base = file("."),
-    settings = sharedSettings
-  ).enablePlugins(DocGen, SbtOsgi)
+    settings = buildLevelSettings ++ sharedSettings 
+  ).enablePlugins(DocGen, SbtOsgi, CrossPerProjectPlugin)
   .settings(
     test := {},
     publish := {}, // skip publishing for this root project.
@@ -169,7 +169,7 @@ def module(name: String) = {
   val id = s"bijection-$name"
   Project(id = id, base = file(id))
     .enablePlugins(SbtOsgi)
-    .settings(sharedSettings)
+    .settings(buildLevelSettings ++ sharedSettings)
     .settings(
       mimaPreviousArtifacts := youngestForwardCompatible(name),
       mimaBinaryIssueFilters ++= ignoredABIProblems
@@ -244,6 +244,7 @@ lazy val bijectionGuava = {
 
 lazy val bijectionScrooge = {
   module("scrooge").settings(
+    crossScalaVersions := crossScalaVersions.value.filterNot(_.startsWith("2.12")),
     osgiExportAll("com.twitter.bijection.scrooge"),
     libraryDependencies ++= Seq(
       "org.apache.thrift" % "libthrift" % "0.6.1" exclude ("junit", "junit"),
@@ -269,6 +270,7 @@ lazy val bijectionJson = {
 
 lazy val bijectionUtil = {
   module("util").settings(
+    crossScalaVersions := crossScalaVersions.value.filterNot(_.startsWith("2.12")),
     osgiExportAll("com.twitter.bijection.twitter_util"),
     libraryDependencies += "com.twitter" %% "util-core" % "6.24.0"
   ).dependsOn(
@@ -278,6 +280,7 @@ lazy val bijectionUtil = {
 
 lazy val bijectionFinagleMySql = {
   module("finagle-mysql").settings(
+    crossScalaVersions := crossScalaVersions.value.filterNot(_.startsWith("2.12")),
     osgiExportAll("com.twitter.bijection.finagle_mysql"),
     libraryDependencies ++= Seq(
       "com.twitter" %% "finagle-mysql" % "6.25.0",
@@ -347,8 +350,8 @@ lazy val bijectionJson4s = {
     osgiExportAll("com.twitter.bijection.json4s"),
     libraryDependencies ++= Seq(
       "org.scala-lang" % "scala-reflect" % scalaVersion.value,
-      "org.json4s" %% "json4s-native" % "3.2.10",
-      "org.json4s" %% "json4s-ext" % "3.2.10"
+      "org.json4s" %% "json4s-native" % "3.5.0",
+      "org.json4s" %% "json4s-ext" % "3.5.0"
     )
   ).dependsOn(
     bijectionCore % "test->test;compile->compile"

project/plugins.sbt

@@ -3,6 +3,7 @@ resolvers ++= Seq(
 )
 
 addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.3")
+addSbtPlugin("com.eed3si9n" % "sbt-doge" % "0.1.5")
 addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.0.0")
 addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "0.1.11")
 addSbtPlugin("com.typesafe.sbt" % "sbt-ghpages" % "0.5.4")

sbt

@@ -4,8 +4,8 @@
 # Author: Paul Phillips <paulp@improving.org>
 
 # todo - make this dynamic
-declare -r sbt_release_version="0.13.12"
-declare -r sbt_unreleased_version="0.13.12"
+declare -r sbt_release_version="0.13.13"
+declare -r sbt_unreleased_version="0.13.13"
 declare -r buildProps="project/build.properties"
 
 declare sbt_jar sbt_dir sbt_create sbt_version