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-rw-r--r--test/files/jvm/serialization-new.check2
-rw-r--r--test/files/jvm/serialization.check2
-rw-r--r--test/files/neg/t7623.check21
-rw-r--r--test/files/neg/t7623.flags1
-rw-r--r--test/files/neg/t7623.scala38
-rw-r--r--test/files/neg/t9041.check4
-rw-r--r--test/files/neg/t9041.scala17
-rw-r--r--test/files/neg/t9093.check6
-rw-r--r--test/files/neg/t9093.scala5
-rw-r--r--test/files/pos/t9050.scala13
-rw-r--r--test/files/pos/t9086.scala8
-rw-r--r--test/files/pos/t9123.flags1
-rw-r--r--test/files/pos/t9123.scala10
-rw-r--r--test/files/pos/t9135.scala16
-rw-r--r--test/files/run/bitsets.check1
-rw-r--r--test/files/run/t6502.check8
-rw-r--r--test/files/run/t6502.scala70
-rw-r--r--test/junit/scala/StringContextTest.scala15
-rw-r--r--test/junit/scala/collection/IterableViewLikeTest.scala1
-rw-r--r--test/junit/scala/collection/immutable/StringLikeTest.scala37
-rw-r--r--test/junit/scala/collection/mutable/MutableListTest.scala37
-rw-r--r--test/junit/scala/tools/nsc/symtab/SymbolTableTest.scala5
-rw-r--r--test/junit/scala/tools/testing/AssertThrowsTest.scala2
-rw-r--r--test/junit/scala/tools/testing/AssertUtil.scala59
-rw-r--r--test/junit/scala/tools/testing/AssertUtilTest.scala21
25 files changed, 361 insertions, 39 deletions
diff --git a/test/files/jvm/serialization-new.check b/test/files/jvm/serialization-new.check
index 1555135926..cb26446f40 100644
--- a/test/files/jvm/serialization-new.check
+++ b/test/files/jvm/serialization-new.check
@@ -1,4 +1,4 @@
-warning: there were two deprecation warnings; re-run with -deprecation for details
+warning: there were three deprecation warnings; re-run with -deprecation for details
a1 = Array[1,2,3]
_a1 = Array[1,2,3]
arrayEquals(a1, _a1): true
diff --git a/test/files/jvm/serialization.check b/test/files/jvm/serialization.check
index 1555135926..cb26446f40 100644
--- a/test/files/jvm/serialization.check
+++ b/test/files/jvm/serialization.check
@@ -1,4 +1,4 @@
-warning: there were two deprecation warnings; re-run with -deprecation for details
+warning: there were three deprecation warnings; re-run with -deprecation for details
a1 = Array[1,2,3]
_a1 = Array[1,2,3]
arrayEquals(a1, _a1): true
diff --git a/test/files/neg/t7623.check b/test/files/neg/t7623.check
new file mode 100644
index 0000000000..db368dd369
--- /dev/null
+++ b/test/files/neg/t7623.check
@@ -0,0 +1,21 @@
+t7623.scala:19: warning: A repeated case parameter or extracted sequence should be matched only by a sequence wildcard (_*).
+ def f = "" match { case X(s) => }
+ ^
+t7623.scala:21: warning: A repeated case parameter or extracted sequence should be matched only by a sequence wildcard (_*).
+ def g = "" match { case X(s, t) => }
+ ^
+t7623.scala:23: warning: A repeated case parameter or extracted sequence should be matched only by a sequence wildcard (_*).
+ def h = "" match { case X(s, t, u @ _*) => }
+ ^
+t7623.scala:9: warning: A repeated case parameter or extracted sequence should be matched only by a sequence wildcard (_*).
+ def f = C("") match { case C(s) => }
+ ^
+t7623.scala:11: warning: A repeated case parameter or extracted sequence should be matched only by a sequence wildcard (_*).
+ def g = C("") match { case C(s, t) => }
+ ^
+t7623.scala:13: warning: A repeated case parameter or extracted sequence should be matched only by a sequence wildcard (_*).
+ def h = C("") match { case C(s, t, u @ _*) => }
+ ^
+error: No warnings can be incurred under -Xfatal-warnings.
+6 warnings found
+one error found
diff --git a/test/files/neg/t7623.flags b/test/files/neg/t7623.flags
new file mode 100644
index 0000000000..74c9e38323
--- /dev/null
+++ b/test/files/neg/t7623.flags
@@ -0,0 +1 @@
+-Xlint:stars-align -Xfatal-warnings
diff --git a/test/files/neg/t7623.scala b/test/files/neg/t7623.scala
new file mode 100644
index 0000000000..5c40f37bc1
--- /dev/null
+++ b/test/files/neg/t7623.scala
@@ -0,0 +1,38 @@
+
+
+case class C(s: String, xs: Int*)
+
+object X { def unapplySeq(a: Any): Option[(String, Seq[Int])] = Some("", List(1,2,3)) }
+
+// for case classes with varargs, avoid misaligned patterns
+trait Ctest {
+ def f = C("") match { case C(s) => }
+
+ def g = C("") match { case C(s, t) => }
+
+ def h = C("") match { case C(s, t, u @ _*) => }
+
+ def ok = C("") match { case C(s, u @ _*) => }
+}
+// for extractors that unapplySeq: Option[(Something, Seq[_])], avoid misaligned patterns
+trait Xtest {
+ def f = "" match { case X(s) => }
+
+ def g = "" match { case X(s, t) => }
+
+ def h = "" match { case X(s, t, u @ _*) => }
+
+ def ok = "" match { case X(s, u @ _*) => }
+}
+// for extractors that unapplySeq: Option[Seq[_]], anything goes
+trait Rtest {
+ val r = "(a+)".r
+
+ def f = "" match { case r(s) => }
+
+ def g = "" match { case r(s, t) => }
+
+ def h = "" match { case r(s, t, u @ _*) => }
+
+ def whatever = "" match { case r(u @ _*) => }
+}
diff --git a/test/files/neg/t9041.check b/test/files/neg/t9041.check
new file mode 100644
index 0000000000..669e9434e0
--- /dev/null
+++ b/test/files/neg/t9041.check
@@ -0,0 +1,4 @@
+t9041.scala:11: error: could not find implicit value for parameter cellSetter: CellSetter[scala.math.BigDecimal]
+ def setCell(cell: Cell, data: math.BigDecimal) { cell.setCellValue(data) }
+ ^
+one error found
diff --git a/test/files/neg/t9041.scala b/test/files/neg/t9041.scala
new file mode 100644
index 0000000000..2bdef0d3ae
--- /dev/null
+++ b/test/files/neg/t9041.scala
@@ -0,0 +1,17 @@
+// False negative test, requires overloading in Cell.
+
+trait Cell { def setCellValue(i: Int) = () ; def setCellValue(d: Double) = () }
+
+trait Nope {
+ def f = {
+ trait CellSetter[A] {
+ def setCell(cell: Cell, data: A): Unit
+ }
+ implicit val bigDecimalCellSetter = new CellSetter[math.BigDecimal]() {
+ def setCell(cell: Cell, data: math.BigDecimal) { cell.setCellValue(data) }
+ }
+ implicit class RichCell(cell: Cell) {
+ def setCellValue[A](data: A)(implicit cellSetter: CellSetter[A]) = cellSetter.setCell(cell, data)
+ }
+ }
+}
diff --git a/test/files/neg/t9093.check b/test/files/neg/t9093.check
new file mode 100644
index 0000000000..085a433f0b
--- /dev/null
+++ b/test/files/neg/t9093.check
@@ -0,0 +1,6 @@
+t9093.scala:3: error: polymorphic expression cannot be instantiated to expected type;
+ found : [C](f: C)Null
+ required: Unit
+ val x: Unit = apply2(0)/*(0)*/
+ ^
+one error found
diff --git a/test/files/neg/t9093.scala b/test/files/neg/t9093.scala
new file mode 100644
index 0000000000..d9922ad70e
--- /dev/null
+++ b/test/files/neg/t9093.scala
@@ -0,0 +1,5 @@
+object Main {
+ def apply2[C](fa: Any)(f: C) = null
+ val x: Unit = apply2(0)/*(0)*/
+}
+
diff --git a/test/files/pos/t9050.scala b/test/files/pos/t9050.scala
new file mode 100644
index 0000000000..b1ab09f901
--- /dev/null
+++ b/test/files/pos/t9050.scala
@@ -0,0 +1,13 @@
+final class Mu[F](val value: Any) extends AnyVal {
+ def cata(f: F) {
+ // crash
+ ((y: Mu[F]) => y.cata(f))
+ // crash
+ def foo(x : Mu[F]) = x.cata(f)
+
+ // // okay
+ def x: Mu[F] = ???
+ (() => x.cata(f))
+ assert(true, cata(f))
+ }
+}
diff --git a/test/files/pos/t9086.scala b/test/files/pos/t9086.scala
new file mode 100644
index 0000000000..fba34ee226
--- /dev/null
+++ b/test/files/pos/t9086.scala
@@ -0,0 +1,8 @@
+class X[A](a: A)
+object Test {
+ implicit val ImplicitBoolean: Boolean = true
+ def local = {
+ implicit object X extends X({ implicitly[Boolean] ; "" })
+ implicitly[X[String]] // failed in 2.11.5
+ }
+}
diff --git a/test/files/pos/t9123.flags b/test/files/pos/t9123.flags
new file mode 100644
index 0000000000..c16e2f71dc
--- /dev/null
+++ b/test/files/pos/t9123.flags
@@ -0,0 +1 @@
+-optimize -Ydelambdafy:method
diff --git a/test/files/pos/t9123.scala b/test/files/pos/t9123.scala
new file mode 100644
index 0000000000..22d55b4351
--- /dev/null
+++ b/test/files/pos/t9123.scala
@@ -0,0 +1,10 @@
+trait Setting {
+ type T
+ def value: T
+}
+
+object Test {
+ def test(x: Some[Setting]) = x match {
+ case Some(dep) => Some(dep.value) map (_ => true)
+ }
+}
diff --git a/test/files/pos/t9135.scala b/test/files/pos/t9135.scala
new file mode 100644
index 0000000000..1e2c97baf9
--- /dev/null
+++ b/test/files/pos/t9135.scala
@@ -0,0 +1,16 @@
+
+class Free[A] {
+
+
+ this match {
+ case a @ Gosub() => gosub(a.a)(x => gosub(???)(???))
+ }
+ def gosub[A, B](a0: Free[A])(f0: A => Any): Free[B] = ???
+}
+
+
+
+ case class Gosub[B]() extends Free[B] {
+ type C
+ def a: Free[C] = ???
+ }
diff --git a/test/files/run/bitsets.check b/test/files/run/bitsets.check
index 41c2ccdcb8..c24fd6238f 100644
--- a/test/files/run/bitsets.check
+++ b/test/files/run/bitsets.check
@@ -1,3 +1,4 @@
+warning: there were three deprecation warnings; re-run with -deprecation for details
ms0 = BitSet(2)
ms1 = BitSet(2)
ms2 = BitSet(2)
diff --git a/test/files/run/t6502.check b/test/files/run/t6502.check
deleted file mode 100644
index 95d36ee221..0000000000
--- a/test/files/run/t6502.check
+++ /dev/null
@@ -1,8 +0,0 @@
-test1 res1: true
-test1 res2: true
-test2 res1: true
-test2 res2: true
-test3 res1: true
-test3 res2: true
-test4 res1: true
-test4 res2: true
diff --git a/test/files/run/t6502.scala b/test/files/run/t6502.scala
index 4ce034a482..52fabef6b8 100644
--- a/test/files/run/t6502.scala
+++ b/test/files/run/t6502.scala
@@ -46,6 +46,12 @@ object Test extends StoreReporterDirectTest {
}
}"""
+ def app6 = """
+ package test6
+ class A extends Test { println("created test6.A") }
+ class Z extends Test { println("created test6.Z") }
+ trait Test"""
+
def test1(): Unit = {
val jar = "test1.jar"
compileCode(app1, jar)
@@ -53,11 +59,12 @@ object Test extends StoreReporterDirectTest {
val codeToRun = toCodeInSeparateLines(s":require ${testOutput.path}/$jar", "test.Test.test()")
val output = ILoop.run(codeToRun, settings)
val lines = output.split("\n")
- val res1 = lines(4).contains("Added") && lines(4).contains("test1.jar")
- val res2 = lines(lines.length-3).contains("testing...")
-
- println(s"test1 res1: $res1")
- println(s"test1 res2: $res2")
+ assert {
+ lines(4).contains("Added") && lines(4).contains("test1.jar")
+ }
+ assert {
+ lines(lines.length-3).contains("testing...")
+ }
}
def test2(): Unit = {
@@ -69,11 +76,12 @@ object Test extends StoreReporterDirectTest {
val codeToRun = toCodeInSeparateLines(s":require ${testOutput.path}/$jar1", s":require ${testOutput.path}/$jar2")
val output = ILoop.run(codeToRun, settings)
val lines = output.split("\n")
- val res1 = lines(4).contains("Added") && lines(4).contains("test1.jar")
- val res2 = lines(lines.length-3).contains("test2.jar") && lines(lines.length-3).contains("existing classpath entries conflict")
-
- println(s"test2 res1: $res1")
- println(s"test2 res2: $res2")
+ assert {
+ lines(4).contains("Added") && lines(4).contains("test1.jar")
+ }
+ assert {
+ lines(lines.length-3).contains("test2.jar") && lines(lines.length-3).contains("existing classpath entries conflict")
+ }
}
def test3(): Unit = {
@@ -85,11 +93,12 @@ object Test extends StoreReporterDirectTest {
val codeToRun = toCodeInSeparateLines(s":require ${testOutput.path}/$jar1", s":require ${testOutput.path}/$jar3", "test.Test3.test()")
val output = ILoop.run(codeToRun, settings)
val lines = output.split("\n")
- val res1 = lines(4).contains("Added") && lines(4).contains("test1.jar")
- val res2 = lines(lines.length-3).contains("new object in existing package")
-
- println(s"test3 res1: $res1")
- println(s"test3 res2: $res2")
+ assert {
+ lines(4).contains("Added") && lines(4).contains("test1.jar")
+ }
+ assert {
+ lines(lines.length-3).contains("new object in existing package")
+ }
}
def test4(): Unit = {
@@ -98,11 +107,30 @@ object Test extends StoreReporterDirectTest {
val codeToRun = toCodeInSeparateLines(s":require ${testOutput.path}/$jar1", s":require ${testOutput.path}/$jar1")
val output = ILoop.run(codeToRun, settings)
val lines = output.split("\n")
- val res1 = lines(4).contains("Added") && lines(4).contains("test1.jar")
- val res2 = lines(lines.length-3).contains("test1.jar") && lines(lines.length-3).contains("existing classpath entries conflict")
+ assert {
+ lines(4).contains("Added") && lines(4).contains("test1.jar")
+ }
+ assert {
+ lines(lines.length-3).contains("test1.jar") && lines(lines.length-3).contains("existing classpath entries conflict")
+ }
+ }
- println(s"test4 res1: $res1")
- println(s"test4 res2: $res2")
+ def test5(): Unit = {
+ val codeToRun = ":require /does/not/exist.jar"
+ val output = ILoop.run(codeToRun, settings)
+ assert(!output.contains("NullPointerException"), output)
+ assert(output.contains("Cannot load '/does/not/exist.jar'"), output)
+ }
+
+ def test6(): Unit = {
+ // Avoid java.lang.NoClassDefFoundError triggered by the old appoach of using a Java
+ // classloader to parse .class files in order to read their names.
+ val jar = "test6.jar"
+ compileCode(app6, jar)
+ val codeToRun = toCodeInSeparateLines(s":require ${testOutput.path}/$jar", "import test6._; new A; new Z")
+ val output = ILoop.run(codeToRun, settings)
+ assert(output.contains("created test6.A"), output)
+ assert(output.contains("created test6.Z"), output)
}
def show(): Unit = {
@@ -110,7 +138,9 @@ object Test extends StoreReporterDirectTest {
test2()
test3()
test4()
+ test5()
+ test6()
}
- def toCodeInSeparateLines(lines: String*): String = lines.map(_ + "\n").mkString
+ def toCodeInSeparateLines(lines: String*): String = lines mkString "\n"
}
diff --git a/test/junit/scala/StringContextTest.scala b/test/junit/scala/StringContextTest.scala
index 608b82bd96..7e9e775d58 100644
--- a/test/junit/scala/StringContextTest.scala
+++ b/test/junit/scala/StringContextTest.scala
@@ -65,14 +65,23 @@ class StringContextTest {
@Test def fIf() = {
val res = f"${if (true) 2.5 else 2.5}%.2f"
- assertEquals("2.50", res)
+ val expected = formatUsingCurrentLocale(2.50)
+ assertEquals(expected, res)
}
+
@Test def fIfNot() = {
val res = f"${if (false) 2.5 else 3.5}%.2f"
- assertEquals("3.50", res)
+ val expected = formatUsingCurrentLocale(3.50)
+ assertEquals(expected, res)
}
+
@Test def fHeteroArgs() = {
val res = f"${3.14}%.2f rounds to ${3}%d"
- assertEquals("3.14 rounds to 3", res)
+ val expected = formatUsingCurrentLocale(3.14) + " rounds to 3"
+ assertEquals(expected, res)
}
+
+ // Use this method to avoid problems with a locale-dependent decimal mark.
+ // The string interpolation is not used here intentionally as this method is used to test string interpolation.
+ private def formatUsingCurrentLocale(number: Double, decimalPlaces: Int = 2) = ("%." + decimalPlaces + "f").format(number)
}
diff --git a/test/junit/scala/collection/IterableViewLikeTest.scala b/test/junit/scala/collection/IterableViewLikeTest.scala
index 55da02744b..ab09c4930b 100644
--- a/test/junit/scala/collection/IterableViewLikeTest.scala
+++ b/test/junit/scala/collection/IterableViewLikeTest.scala
@@ -4,6 +4,7 @@ import org.junit.Assert._
import org.junit.Test
import org.junit.runner.RunWith
import org.junit.runners.JUnit4
+import language.postfixOps
@RunWith(classOf[JUnit4])
class IterableViewLikeTest {
diff --git a/test/junit/scala/collection/immutable/StringLikeTest.scala b/test/junit/scala/collection/immutable/StringLikeTest.scala
new file mode 100644
index 0000000000..3722bdfe4d
--- /dev/null
+++ b/test/junit/scala/collection/immutable/StringLikeTest.scala
@@ -0,0 +1,37 @@
+package scala.collection.immutable
+
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+
+import scala.tools.testing.AssertUtil
+import scala.util.Random
+
+/* Test for SI-8988 */
+@RunWith(classOf[JUnit4])
+class StringLikeTest {
+ @Test
+ def testStringSplitWithChar: Unit = {
+ val chars = (0 to 255).map(_.toChar)
+ def randString = Random.nextString(30)
+
+ for (c <- chars) {
+ val s = randString
+ val jString = new java.lang.String(s)
+
+ // make sure we can match a literal character done by Java's split
+ val jSplit = jString.split("\\Q" + c.toString + "\\E")
+ val sSplit = s.split(c)
+ AssertUtil.assertSameElements(jSplit, sSplit, s"Not same result as Java split for char $c in string $s")
+ }
+ }
+
+ @Test
+ def testSplitEdgeCases: Unit = {
+ AssertUtil.assertSameElements("abcd".split('d'), Array("abc")) // not Array("abc", "")
+ AssertUtil.assertSameElements("abccc".split('c'), Array("ab")) // not Array("ab", "", "", "")
+ AssertUtil.assertSameElements("xxx".split('x'), Array[String]()) // not Array("", "", "", "")
+ AssertUtil.assertSameElements("".split('x'), Array("")) // not Array()
+ AssertUtil.assertSameElements("--ch--omp--".split("-"), Array("", "", "ch", "", "omp")) // All the cases!
+ }
+}
diff --git a/test/junit/scala/collection/mutable/MutableListTest.scala b/test/junit/scala/collection/mutable/MutableListTest.scala
new file mode 100644
index 0000000000..ac6d30def0
--- /dev/null
+++ b/test/junit/scala/collection/mutable/MutableListTest.scala
@@ -0,0 +1,37 @@
+package scala.collection.mutable
+
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import org.junit.Test
+import org.junit.Assert._
+
+import scala.tools.testing.AssertUtil._
+
+@RunWith(classOf[JUnit4])
+class MutableListTest {
+
+ // Tests SI-8976
+ @Test def tailIteratorMustTerminateAtLength(): Unit = {
+ val is = MutableList(1,2,3)
+ val tl = is.tail
+ assertEquals(tl.length, tl.iterator.length)
+ is += 5
+ assertEquals(tl.length, tl.iterator.length)
+ assertSameElements(tl, tl.iterator)
+ }
+ @Test def iteratorMustFailEventually(): Unit = assertThrows[NoSuchElementException] {
+ MutableList[Unit]().iterator.next()
+ }
+ // was: Root empty iterator held reference
+ @Test def iteratorMustNotHoldOntoLast(): Unit = {
+ val is = MutableList(Some(1), Some(2))
+ val it = is.iterator
+ val x = Some(3)
+ is += x
+ assertNotReachable(x, it) {
+ it.next()
+ it.next()
+ }
+ assertTrue(it.isEmpty)
+ }
+}
diff --git a/test/junit/scala/tools/nsc/symtab/SymbolTableTest.scala b/test/junit/scala/tools/nsc/symtab/SymbolTableTest.scala
index 11e955a4bb..895ad9d683 100644
--- a/test/junit/scala/tools/nsc/symtab/SymbolTableTest.scala
+++ b/test/junit/scala/tools/nsc/symtab/SymbolTableTest.scala
@@ -44,4 +44,9 @@ class SymbolTableTest {
assertFalse("Foo should be a superclass of Foo", fooSymbol.tpe <:< barSymbol.tpe)
}
+ @Test
+ def noSymbolOuterClass_t9133: Unit = {
+ import symbolTable._
+ assert(NoSymbol.outerClass == NoSymbol)
+ }
}
diff --git a/test/junit/scala/tools/testing/AssertThrowsTest.scala b/test/junit/scala/tools/testing/AssertThrowsTest.scala
index d91e450bac..76758f51d2 100644
--- a/test/junit/scala/tools/testing/AssertThrowsTest.scala
+++ b/test/junit/scala/tools/testing/AssertThrowsTest.scala
@@ -38,6 +38,6 @@ class AssertThrowsTest {
} catch {
case e: AssertionError => return
}
- assert(false, "assertThrows should error if the tested expression does not throw anything")
+ fail("assertThrows should error if the tested expression does not throw anything")
}
}
diff --git a/test/junit/scala/tools/testing/AssertUtil.scala b/test/junit/scala/tools/testing/AssertUtil.scala
index 83a637783f..d29f9a473f 100644
--- a/test/junit/scala/tools/testing/AssertUtil.scala
+++ b/test/junit/scala/tools/testing/AssertUtil.scala
@@ -2,18 +2,42 @@ package scala.tools
package testing
import org.junit.Assert
-import Assert.fail
+import Assert._
import scala.runtime.ScalaRunTime.stringOf
import scala.collection.{ GenIterable, IterableLike }
+import scala.collection.JavaConverters._
+import scala.collection.mutable
+import java.lang.ref._
+import java.lang.reflect._
+import java.util.IdentityHashMap
/** This module contains additional higher-level assert statements
* that are ultimately based on junit.Assert primitives.
*/
object AssertUtil {
- /**
- * Check if throwable T (or a subclass) was thrown during evaluation of f, and that its message
- * satisfies the `checkMessage` predicate.
- * If any other exception will be re-thrown.
+ private final val timeout = 60 * 1000L // wait a minute
+
+ private implicit class `ref helper`[A](val r: Reference[A]) extends AnyVal {
+ def isEmpty: Boolean = r.get == null
+ def nonEmpty: Boolean = !isEmpty
+ }
+ private implicit class `class helper`(val clazz: Class[_]) extends AnyVal {
+ def allFields: List[Field] = {
+ def loop(k: Class[_]): List[Field] =
+ if (k == null) Nil
+ else k.getDeclaredFields.toList ::: loop(k.getSuperclass)
+ loop(clazz)
+ }
+ }
+ private implicit class `field helper`(val f: Field) extends AnyVal {
+ def follow(o: AnyRef): AnyRef = {
+ f setAccessible true
+ f get o
+ }
+ }
+
+ /** Check if throwable T (or a subclass) was thrown during evaluation of f, and that its message
+ * satisfies the `checkMessage` predicate. If any other exception will be re-thrown.
*/
def assertThrows[T <: Throwable](f: => Any,
checkMessage: String => Boolean = s => true)
@@ -41,4 +65,29 @@ object AssertUtil {
*/
def assertSameElements[A, B >: A](expected: IterableLike[A, _], actual: Iterator[B]): Unit =
assertSameElements(expected, actual.toList, "")
+
+ /** Value is not strongly reachable from roots after body is evaluated.
+ */
+ def assertNotReachable[A <: AnyRef](a: => A, roots: AnyRef*)(body: => Unit): Unit = {
+ val wkref = new WeakReference(a)
+ def refs(root: AnyRef): mutable.Set[AnyRef] = {
+ val seen = new IdentityHashMap[AnyRef, Unit]
+ def loop(o: AnyRef): Unit =
+ if (wkref.nonEmpty && o != null && !seen.containsKey(o)) {
+ seen.put(o, ())
+ for {
+ f <- o.getClass.allFields
+ if !Modifier.isStatic(f.getModifiers)
+ if !f.getType.isPrimitive
+ if !classOf[Reference[_]].isAssignableFrom(f.getType)
+ } loop(f follow o)
+ }
+ loop(root)
+ seen.keySet.asScala
+ }
+ body
+ for (r <- roots if wkref.nonEmpty) {
+ assertFalse(s"Root $r held reference", refs(r) contains wkref.get)
+ }
+ }
}
diff --git a/test/junit/scala/tools/testing/AssertUtilTest.scala b/test/junit/scala/tools/testing/AssertUtilTest.scala
new file mode 100644
index 0000000000..03d8815ab2
--- /dev/null
+++ b/test/junit/scala/tools/testing/AssertUtilTest.scala
@@ -0,0 +1,21 @@
+package scala.tools
+package testing
+
+import org.junit.Assert._
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import AssertUtil._
+
+import java.lang.ref._
+
+@RunWith(classOf[JUnit4])
+class AssertUtilTest {
+
+ @Test def reachableIgnoresReferences(): Unit = {
+ class Holder[A](val ref: SoftReference[A])
+ val o = new Object
+ val r = new SoftReference(o)
+ assertNotReachable(o, new Holder(r)) { }
+ }
+}