Merge pull request #635 from lolgab/delete-measurements-task

Add task to delete measurements

Author: tgodzik

src/main/scala/scoverage/ScoverageKeys.scala

@@ -8,6 +8,8 @@ object ScoverageKeys {
     "controls whether code instrumentation is enabled or not"
   )
   @transient
+  lazy val coverageDeleteMeasurements = taskKey[Unit]("delete existing coverage measurements")
+  @transient
   lazy val coverageReport = taskKey[Unit]("run report generation")
   @transient
   lazy val coverageAggregate = taskKey[Unit]("aggregate reports from subprojects")

src/main/scala/scoverage/ScoverageSbtPlugin.scala

@@ -67,6 +67,7 @@ object ScoverageSbtPlugin extends AutoPlugin {
 
   override def projectSettings: Seq[Setting[_]] = Seq(
     ivyConfigurations += ScoveragePluginConfig,
+    coverageDeleteMeasurements := coverageDeleteMeasurements0.value,
     coverageReport := coverageReport0.value,
     coverageAggregate := coverageAggregate0.value,
     coverageAggregate / aggregate := false,
@@ -251,11 +252,19 @@ object ScoverageSbtPlugin extends AutoPlugin {
     sjsClassifier getOrElse ""
   }
 
+  private lazy val coverageDeleteMeasurements0 = Def.task {
+    val dataDir = coverageDataDir.value
+    implicit val log: Logger = streams.value.log
+
+    log.info("Deleting existing coverage measurements...")
+    IOUtils.findMeasurementFiles(dataDir).foreach(IO.delete)
+  }
+
   private lazy val coverageReport0 = Def.task {
     val target = coverageDataDir.value
     implicit val log: Logger = streams.value.log
 
-    log.info(s"Waiting for measurement data to sync...")
+    log.info("Waiting for measurement data to sync...")
     if (System.getProperty("os.name").toLowerCase.contains("windows")) {
       Thread.sleep(
         1000