org.specs2.main.SystemProperties.scala Maven / Gradle / Ivy
package org.specs2
package main
import scala.collection.JavaConversions._
import text.NotNullStrings._
import text.FromString
import java.util.regex.Pattern
/**
* Utility methods to get systems properties prefixed with specs2
*/
trait SystemProperties {
val specs2Prefix = "specs2."
/** @return a system property if it exists */
protected def systemGetProperty(p: String): Option[String] = Option(System.getProperty(p.notNull))
/** @return the value of the system property p */
def getProperty(p: String): Option[String] = systemGetProperty(specs2Prefix + p).
orElse(systemGetProperty(specs2Prefix + p.toLowerCase)).
orElse(systemGetProperty(p)).
orElse(systemGetProperty(p.toLowerCase)).map(_.notNull)
/** @return the value of the system property p as a given type */
def getPropertyAs[T: FromString](p: String): Option[T] = getProperty(p) flatMap implicitly[FromString[T]].fromString
/** @return the value of the system property p or a default value */
def getOrElse(p: String, defaultValue: String): String = getProperty(p).getOrElse(defaultValue)
/** @return the value Some(T) if the property is defined */
def getIf[T](p: String, value: =>T): Option[T] = getProperty(p).map(v => value)
/** @return the value Some(T) if the property is defined */
def getIfElse[T](p: String, v1: =>T)(v2: =>T): T = getIf(p, v1).getOrElse(v2)
/** @return true if a property is defined */
def isDefined(p: String) = getProperty(p).isDefined
}
object SystemProperties extends SystemProperties
/**
* This class is used in specifications to mock the system properties
*/
private[specs2]
trait MapSystemProperties extends SystemProperties {
def properties: Map[String, String]
override def systemGetProperty(p: String) = properties.get(p)
}