diff --git a/build.sbt b/build.sbt
index 8e32c1a70..b21edd6fb 100644
--- a/build.sbt
+++ b/build.sbt
@@ -2,7 +2,6 @@ import sbt.ScriptedPlugin
 import sbt.ScriptedPlugin._
 
 organization in ThisBuild := "ch.epfl.scala"
-version in ThisBuild := "0.2.1"
 
 lazy val crossVersions = Seq(
   "2.11.8",
@@ -68,7 +67,7 @@ lazy val publishSettings = Seq(
     "Apache-2.0" -> url("http://www.apache.org/licenses/LICENSE-2.0")),
   homepage := Some(url("https://github.com/scalacenter/scalafix")),
   autoAPIMappings := true,
-  apiURL := Some(url("https://scalacenter.github.io/scalafix/docs/")),
+  apiURL := Some(url("https://scalacenter.github.io/scalafix/")),
   scmInfo := Some(
     ScmInfo(
       url("https://github.com/scalacenter/scalafix"),
@@ -86,6 +85,7 @@ lazy val publishSettings = Seq(
 )
 
 lazy val noPublish = Seq(
+  publishArtifact := false,
   publish := {},
   publishLocal := {}
 )
@@ -94,6 +94,7 @@ lazy val buildInfoSettings: Seq[Def.Setting[_]] = Seq(
   buildInfoKeys := Seq[BuildInfoKey](
     name,
     version,
+    "stableVersion" -> version.value, // TODO(olafur) customize.
     scalaVersion,
     sbtVersion
   ),
diff --git a/scalafix-sbt/src/main/scala/scalafix/sbt/ScalafixTestUtility.scala b/scalafix-sbt/src/main/scala/scalafix/sbt/ScalafixTestUtility.scala
new file mode 100644
index 000000000..5eec1463f
--- /dev/null
+++ b/scalafix-sbt/src/main/scala/scalafix/sbt/ScalafixTestUtility.scala
@@ -0,0 +1,41 @@
+package scalafix.sbt
+
+import sbt.Keys.TaskStreams
+
+/**
+  * Created by ollie on 02/01/17.
+  */
+object ScalafixTestUtility {
+  // returns true if test succeeded, else false.
+  def assertContentMatches(streams: TaskStreams)(
+      file: String,
+      expectedUntrimmed: String): Boolean = {
+    val expected = expectedUntrimmed.trim
+    val obtained = new String(
+      java.nio.file.Files.readAllBytes(
+        java.nio.file.Paths.get(
+          new java.io.File(file).toURI
+        ))
+    ).trim
+
+    if (obtained.diff(expected).nonEmpty ||
+        expected.diff(obtained).nonEmpty) {
+      val msg =
+        s"""File: $file
+           |Obtained output:
+           |$obtained
+           |Expected:
+           |$expected
+           |Diff:
+           |${obtained.diff(expected)}
+           |${expected.diff(obtained)}
+           |""".stripMargin
+      streams.log.error(file)
+      streams.log.error(msg)
+      false
+    } else {
+      streams.log.success(file)
+      true
+    }
+  }
+}
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/basic/build.sbt b/scalafix-sbt/src/sbt-test/sbt-scalafix/basic/build.sbt
index 277e91a24..825cf0794 100644
--- a/scalafix-sbt/src/sbt-test/sbt-scalafix/basic/build.sbt
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/basic/build.sbt
@@ -1,5 +1,3 @@
-scalafixConfig in ThisBuild := Some(baseDirectory.value / ".scalafix.conf")
-
 lazy val root = project
   .in(file("."))
   .aggregate(
@@ -13,36 +11,8 @@ lazy val p2 = project.settings(scalaVersion := "2.10.5")
 lazy val p3 = project.settings(scalaVersion := "2.12.1")
 
 TaskKey[Unit]("check") := {
-  // returns true if test succeeded, else false.
-  def assertContentMatches(file: String, expectedUntrimmed: String): Boolean = {
-    val expected = expectedUntrimmed.trim
-    val obtained = new String(
-      java.nio.file.Files.readAllBytes(
-        java.nio.file.Paths.get(
-          new java.io.File(file).toURI
-        ))
-    ).trim
-
-    if (obtained.diff(expected).nonEmpty ||
-        expected.diff(obtained).nonEmpty) {
-      val msg =
-        s"""File: $file
-           |Obtained output:
-           |$obtained
-           |Expected:
-           |$expected
-           |Diff:
-           |${obtained.diff(expected)}
-           |${expected.diff(obtained)}
-           |""".stripMargin
-      streams.value.log.error(file)
-      streams.value.log.error(msg)
-      false
-    } else {
-      streams.value.log.success(file)
-      true
-    }
-  }
+  val assertContentMatches: ((String, String) => Boolean) =
+    scalafix.sbt.ScalafixTestUtility.assertContentMatches(streams.value) _
   val expected =
     """object Main {
       |  implicit val x: Int = 2
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/config/build.sbt b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/build.sbt
new file mode 100644
index 000000000..3cbff5cb2
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/build.sbt
@@ -0,0 +1,22 @@
+scalaVersion := "2.11.8"
+
+scalafixConfig in ThisBuild := Some(file("myscalafix.conf"))
+
+TaskKey[Unit]("check") := {
+  val assertContentMatches: ((String, String) => Boolean) =
+    scalafix.sbt.ScalafixTestUtility.assertContentMatches(streams.value) _
+  val expected =
+    """object Main {
+      |  implicit val x = 2
+      |  @volatile lazy val y = 2
+      |  def main(args: Array[String]) {
+      |    println("hello")
+      |  }
+      |}""".stripMargin
+  assert(
+    assertContentMatches(
+      "src/main/scala/Test.scala",
+      expected
+    )
+  )
+}
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/config/myscalafix.conf b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/myscalafix.conf
new file mode 100644
index 000000000..7062903ac
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/myscalafix.conf
@@ -0,0 +1 @@
+rewrites = [VolatileLazyVal]
\ No newline at end of file
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/config/project/build.properties b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/project/build.properties
new file mode 100644
index 000000000..24be09b28
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/project/build.properties
@@ -0,0 +1,2 @@
+sbt.version=0.13.13
+
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/config/project/plugins.sbt b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/project/plugins.sbt
new file mode 100644
index 000000000..843726faf
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/project/plugins.sbt
@@ -0,0 +1 @@
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % sys.props("plugin.version"))
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/config/src/main/scala/Test.scala b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/src/main/scala/Test.scala
new file mode 100644
index 000000000..06e0855ee
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/src/main/scala/Test.scala
@@ -0,0 +1,7 @@
+object Main {
+  implicit val x = 2
+  lazy val y = 2
+  def main(args: Array[String]) {
+    println("hello")
+  }
+}
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/config/test b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/test
new file mode 100644
index 000000000..bb99e9ff9
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/config/test
@@ -0,0 +1,5 @@
+# compile should not affect scalafix
+> compile
+> scalafix
+> check
+
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/build.sbt b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/build.sbt
new file mode 100644
index 000000000..d1b95cf0d
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/build.sbt
@@ -0,0 +1,20 @@
+scalaVersion := "2.11.8"
+
+TaskKey[Unit]("check") := {
+  val assertContentMatches: ((String, String) => Boolean) =
+    scalafix.sbt.ScalafixTestUtility.assertContentMatches(streams.value) _
+  val expected =
+    """object Main {
+      |  implicit val x: Int = 2
+      |  lazy val y = 2
+      |  def main(args: Array[String]): Unit = {
+      |    println("hello")
+      |  }
+      |}""".stripMargin
+  assert(
+    assertContentMatches(
+      "src/main/scala/Test.scala",
+      expected
+    )
+  )
+}
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/project/build.properties b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/project/build.properties
new file mode 100644
index 000000000..24be09b28
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/project/build.properties
@@ -0,0 +1,2 @@
+sbt.version=0.13.13
+
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/project/plugins.sbt b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/project/plugins.sbt
new file mode 100644
index 000000000..843726faf
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/project/plugins.sbt
@@ -0,0 +1 @@
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % sys.props("plugin.version"))
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/src/main/scala/Test.scala b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/src/main/scala/Test.scala
new file mode 100644
index 000000000..06e0855ee
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/src/main/scala/Test.scala
@@ -0,0 +1,7 @@
+object Main {
+  implicit val x = 2
+  lazy val y = 2
+  def main(args: Array[String]) {
+    println("hello")
+  }
+}
diff --git a/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/test b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/test
new file mode 100644
index 000000000..bb99e9ff9
--- /dev/null
+++ b/scalafix-sbt/src/sbt-test/sbt-scalafix/noconfig/test
@@ -0,0 +1,5 @@
+# compile should not affect scalafix
+> compile
+> scalafix
+> check
+
diff --git a/scalafix-tests/src/test/scala/scalafix/tests/IntegrationPropertyTest.scala b/scalafix-tests/src/test/scala/scalafix/tests/IntegrationPropertyTest.scala
index d5d4ebf18..1868f3c24 100644
--- a/scalafix-tests/src/test/scala/scalafix/tests/IntegrationPropertyTest.scala
+++ b/scalafix-tests/src/test/scala/scalafix/tests/IntegrationPropertyTest.scala
@@ -101,6 +101,11 @@ abstract class IntegrationPropertyTest(t: ItTest, skip: Boolean = false)
 
   case class FailOk(cmd: String, msg: String) extends Exception(msg)
   def check(): Unit = {
+
+    def assertDiffIsNonEmpty(): Unit = {
+      %%("git", "diff", "--name-only")(t.workingPath).out.lines
+        .exists(_.endsWith(".scala"))
+    }
     def sbt(cmd: String): Unit = {
       val id = s"${t.name}/$cmd"
       logger.info(s"Running $id")
@@ -111,12 +116,8 @@ abstract class IntegrationPropertyTest(t: ItTest, skip: Boolean = false)
     }
     val testFun: () => Any = { () =>
       setup(t)
-      try {
-        t.cmds.map(_.cmd).foreach(sbt)
-      } catch {
-        case FailOk(cmd, msg) =>
-          logger.warn(s"Failed to run $cmd, error $msg")
-      }
+      t.cmds.map(_.cmd).foreach(sbt)
+      assertDiffIsNonEmpty()
     }
 
     if (skip) ignore(t.name)(testFun())
diff --git a/version.sbt b/version.sbt
new file mode 100644
index 000000000..990431131
--- /dev/null
+++ b/version.sbt
@@ -0,0 +1 @@
+version in ThisBuild := "0.2.2-SNAPSHOT"