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package scala.tools.nsc
package settings
import org.junit.Assert._
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.runners.JUnit4
import scala.tools.testing.AssertUtil.assertThrows
@RunWith(classOf[JUnit4])
class SettingsTest {
@Test def booleanSettingColon() {
def check(args: String*): MutableSettings#BooleanSetting = {
val s = new MutableSettings(msg => throw new IllegalArgumentException(msg))
val b1 = new s.BooleanSetting("-Ytest-setting", "")
s.allSettings += b1
val (ok, residual) = s.processArguments(args.toList, processAll = true)
assert(residual.isEmpty)
b1
}
assertTrue(check("-Ytest-setting").value)
assertTrue(check("-Ytest-setting:true").value)
assertTrue(check("-Ytest-setting:TRUE").value)
assertFalse(check("-Ytest-setting:false").value)
assertFalse(check("-Ytest-setting:FALSE").value)
assertThrows[IllegalArgumentException](check("-Ytest-setting:rubbish"))
}
@Test def userSettingsHavePrecedenceOverExperimental() {
def check(args: String*): MutableSettings#BooleanSetting = {
val s = new MutableSettings(msg => throw new IllegalArgumentException(msg))
val (ok, residual) = s.processArguments(args.toList, processAll = true)
assert(residual.isEmpty)
s.YpartialUnification // among -Xexperimental
}
assertTrue(check("-Xexperimental").value)
assertFalse(check("-Xexperimental", "-Ypartial-unification:false").value)
assertFalse(check("-Ypartial-unification:false", "-Xexperimental").value)
}
// for the given args, select the desired setting
private def check(args: String*)(b: MutableSettings => Boolean): Boolean = {
val s = new MutableSettings(msg => throw new IllegalArgumentException(msg))
val (ok, residual) = s.processArguments(args.toList, processAll = true)
assert(residual.isEmpty)
b(s)
}
@Test def userSettingsHavePrecedenceOverLint() {
assertTrue(check("-Xlint")(_.warnAdaptedArgs))
assertFalse(check("-Xlint", "-Ywarn-adapted-args:false")(_.warnAdaptedArgs))
assertFalse(check("-Ywarn-adapted-args:false", "-Xlint")(_.warnAdaptedArgs))
}
@Test def anonymousLintersCanBeNamed() {
assertTrue(check("-Xlint")(_.warnMissingInterpolator)) // among Xlint
assertFalse(check("-Xlint:-missing-interpolator")(_.warnMissingInterpolator))
// positive overrides negative, but not the other way around
assertTrue(check("-Xlint:-missing-interpolator,missing-interpolator")(_.warnMissingInterpolator))
assertTrue(check("-Xlint:-missing-interpolator", "-Xlint:missing-interpolator")(_.warnMissingInterpolator))
assertTrue(check("-Xlint:missing-interpolator,-missing-interpolator")(_.warnMissingInterpolator))
assertTrue(check("-Xlint:missing-interpolator", "-Xlint:-missing-interpolator")(_.warnMissingInterpolator))
// -Xlint:_ adds all possible choices, but explicit negative settings will override
assertFalse(check("-Xlint:-missing-interpolator,_")(_.warnMissingInterpolator))
assertFalse(check("-Xlint:-missing-interpolator", "-Xlint:_")(_.warnMissingInterpolator))
assertFalse(check("-Xlint:_", "-Xlint:-missing-interpolator")(_.warnMissingInterpolator))
assertFalse(check("-Xlint:_,-missing-interpolator")(_.warnMissingInterpolator))
// -Xlint is the same as -Xlint:_
assertFalse(check("-Xlint:-missing-interpolator", "-Xlint")(_.warnMissingInterpolator))
assertFalse(check("-Xlint", "-Xlint:-missing-interpolator")(_.warnMissingInterpolator))
// combination of positive, negative and _
assertTrue(check("-Xlint:_,-missing-interpolator,missing-interpolator")(_.warnMissingInterpolator))
assertTrue(check("-Xlint:-missing-interpolator,_,missing-interpolator")(_.warnMissingInterpolator))
assertTrue(check("-Xlint:-missing-interpolator,missing-interpolator,_")(_.warnMissingInterpolator))
assertTrue(check("-Xlint:missing-interpolator,-missing-interpolator,_")(_.warnMissingInterpolator))
assertTrue(check("-Xlint:missing-interpolator,_,-missing-interpolator")(_.warnMissingInterpolator))
}
@Test def xLintInvalidChoices(): Unit = {
assertThrows[IllegalArgumentException](check("-Xlint:-_")(_.warnAdaptedArgs))
assertThrows[IllegalArgumentException](check("-Xlint:-warn-adapted-args")(_.warnAdaptedArgs)) // "warn-" should not be there
}
@Test def xLintNonColonated(): Unit = {
assertTrue(check("-Xlint", "adapted-args", "-deprecation")(_.warnAdaptedArgs))
assertFalse(check("-Xlint", "adapted-args", "-deprecation")(_.warnMissingInterpolator))
assertTrue(check("-Xlint", "adapted-args", "missing-interpolator", "-deprecation")(s => s.warnMissingInterpolator && s.warnAdaptedArgs))
assertThrows[IllegalArgumentException](check("-Xlint", "adapted-args", "-missing-interpolator")(_.warnAdaptedArgs)) // non-colonated: cannot provide negative args
}
@Test def xLintContainsValues(): Unit = {
// make sure that lint.contains and lint.value.contains are consistent
def t(s: MutableSettings, v: String) = {
val r = s.lint.contains(v)
assertSame(r, s.lint.value.contains((s.LintWarnings withName v).asInstanceOf[s.lint.domain.Value]))
r
}
assertTrue(check("-Xlint")(t(_, "adapted-args")))
assertTrue(check("-Xlint:_")(t(_, "adapted-args")))
assertFalse(check("-Xlint:_,-adapted-args")(t(_, "adapted-args")))
assertFalse(check("-Xlint:-adapted-args,_")(t(_, "adapted-args")))
assertTrue(check("-Xlint:-adapted-args,_,adapted-args")(t(_, "adapted-args")))
}
@Test def xLintDeprecatedAlias(): Unit = {
assertTrue(check("-Ywarn-adapted-args")(_.warnAdaptedArgs))
assertTrue(check("-Xlint:_,-adapted-args", "-Ywarn-adapted-args")(_.warnAdaptedArgs))
assertTrue(check("-Xlint:-adapted-args", "-Ywarn-adapted-args")(_.warnAdaptedArgs))
assertTrue(check("-Ywarn-adapted-args", "-Xlint:-adapted-args,_")(_.warnAdaptedArgs))
assertFalse(check("-Ywarn-adapted-args:false")(_.warnAdaptedArgs))
assertFalse(check("-Ywarn-adapted-args:false", "-Xlint:_")(_.warnAdaptedArgs))
assertFalse(check("-Ywarn-adapted-args:false", "-Xlint:_,-adapted-args")(_.warnAdaptedArgs))
assertTrue(check("-Ywarn-adapted-args:false", "-Xlint:_,adapted-args")(_.warnAdaptedArgs))
}
@Test def expandingMultichoice(): Unit = {
val s = new MutableSettings(msg => throw new IllegalArgumentException(msg))
object mChoices extends s.MultiChoiceEnumeration {
val a = Choice("a")
val b = Choice("b")
val c = Choice("c")
val d = Choice("d")
val ab = Choice("ab", expandsTo = List(a, b))
val ac = Choice("ac", expandsTo = List(a, c))
val uber = Choice("uber", expandsTo = List(ab, d))
}
val m = s.MultiChoiceSetting("-m", "args", "magic sauce", mChoices, Some(List("ac")))
def check(args: String*)(t: s.MultiChoiceSetting[mChoices.type] => Boolean): Boolean = {
m.clear()
val (ok, rest) = s.processArguments(args.toList, processAll = true)
assert(rest.isEmpty)
t(m)
}
import mChoices._
assertTrue(check("-m")(_.value == Set(a,c)))
assertTrue(check("-m:a,-b,c")(_.value == Set(a,c)))
// expanding options don't end up in the value set, only the terminal ones
assertTrue(check("-m:ab,ac")(_.value == Set(a,b,c)))
assertTrue(check("-m:_")(_.value == Set(a,b,c,d)))
assertTrue(check("-m:uber,ac")(_.value == Set(a,b,c,d))) // recursive expansion of uber
// explicit nays
assertTrue(check("-m:_,-b")(_.value == Set(a,c,d)))
assertTrue(check("-m:b,_,-b")(_.value == Set(a,b,c,d)))
assertTrue(check("-m:ac,-c")(_.value == Set(a)))
assertTrue(check("-m:ac,-a,-c")(_.value == Set()))
assertTrue(check("-m:-d,ac")(_.value == Set(a,c)))
assertTrue(check("-m:-b,ac,uber")(_.value == Set(a,c,d)))
assertFalse(check("-m:uber")(_.contains("i-m-not-an-option")))
assertThrows[IllegalArgumentException](check("-m:-_")(_ => true), _ contains "'-_' is not a valid choice")
assertThrows[IllegalArgumentException](check("-m:a,b,-ab")(_ => true), _ contains "'ab' cannot be negated")
assertThrows[IllegalArgumentException](check("-m:a,ac,-uber,uber")(_ => true), _ contains "'uber' cannot be negated")
}
@Test def xSourceTest(): Unit = {
def check(expected: String, args: String*): Unit = {
val s = new MutableSettings(msg => throw new IllegalArgumentException(msg))
val (_, residual) = s.processArguments(args.toList, processAll = true)
assert(residual.isEmpty)
assertTrue(s.source.value == ScalaVersion(expected))
}
check(expected = "2.12.0") // default
check(expected = "2.11.0", "-Xsource:2.11")
check(expected = "2.10", "-Xsource:2.10.0")
check(expected = "2.12", "-Xsource:2.12")
assertThrows[IllegalArgumentException](check(expected = "2.11", "-Xsource"), _ == "-Xsource requires an argument, the syntax is -Xsource:<version>")
assertThrows[IllegalArgumentException](check(expected = "2.11", "-Xsource", "2.11"), _ == "-Xsource requires an argument, the syntax is -Xsource:<version>")
assertThrows[IllegalArgumentException](check(expected = "2.11", "-Xsource:2.invalid"), _ contains "Bad version (2.invalid)")
}
}
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