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/*
* Copyright (C) 2012-2014 Lightbend Inc. <http://www.lightbend.com>
*/
package scala
import reflect._
import tools.reflect.{ToolBox, ToolBoxError}
package object async {
implicit class objectops(obj: Any) {
def mustBe(other: Any) = assert(obj == other, obj + " is not " + other)
def mustEqual(other: Any) = mustBe(other)
}
implicit class stringops(text: String) {
def mustContain(substring: String) = assert(text contains substring, text)
def mustStartWith(prefix: String) = assert(text startsWith prefix, text)
}
implicit class listops(list: List[String]) {
def mustStartWith(prefixes: List[String]) = {
assert(list.length == prefixes.size, ("expected = " + prefixes.length + ", actual = " + list.length, list))
list.zip(prefixes).foreach{ case (el, prefix) => el mustStartWith prefix }
}
}
def intercept[T <: Throwable : ClassTag](body: => Any): T = {
try {
body
throw new Exception(s"Exception of type ${classTag[T]} was not thrown")
} catch {
case t: Throwable =>
if (classTag[T].runtimeClass != t.getClass) throw t
else t.asInstanceOf[T]
}
}
def eval(code: String, compileOptions: String = ""): Any = {
val tb = mkToolbox(compileOptions)
tb.eval(tb.parse(code))
}
def mkToolbox(compileOptions: String = ""): ToolBox[_ <: scala.reflect.api.Universe] = {
val m = scala.reflect.runtime.currentMirror
import scala.tools.reflect.ToolBox
m.mkToolBox(options = compileOptions)
}
import scala.tools.nsc._, reporters._
def mkGlobal(compileOptions: String = ""): Global = {
val settings = new Settings()
settings.processArgumentString(compileOptions)
val initClassPath = settings.classpath.value
settings.embeddedDefaults(getClass.getClassLoader)
if (initClassPath == settings.classpath.value)
settings.usejavacp.value = true // not running under SBT, try to use the Java claspath instead
val reporter = new StoreReporter
new Global(settings, reporter)
}
// returns e.g. target/scala-2.12/classes
// implementation is kludgy, but it's just test code. Scala version number formats and their
// relation to Scala binary versions are too diverse to attempt to do that mapping ourselves here,
// as we learned from experience. and we could use sbt-buildinfo to have sbt tell us, but that
// complicates the build since it does source generation (which may e.g. confuse IntelliJ).
// so this is, uh, fine? (crosses fingers)
def toolboxClasspath =
new java.io.File(this.getClass.getProtectionDomain.getCodeSource.getLocation.toURI)
.getParentFile.getParentFile
def expectError(errorSnippet: String, compileOptions: String = "",
baseCompileOptions: String = s"-cp ${toolboxClasspath}")(code: String) {
intercept[ToolBoxError] {
eval(code, compileOptions + " " + baseCompileOptions)
}.getMessage mustContain errorSnippet
}
}
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