diff options
Diffstat (limited to 'test/junit/scala/lang/primitives')
-rw-r--r-- | test/junit/scala/lang/primitives/BoxUnboxTest.scala | 228 | ||||
-rw-r--r-- | test/junit/scala/lang/primitives/NaNTest.scala | 38 | ||||
-rw-r--r-- | test/junit/scala/lang/primitives/PredefAutoboxingTest.scala | 33 |
3 files changed, 299 insertions, 0 deletions
diff --git a/test/junit/scala/lang/primitives/BoxUnboxTest.scala b/test/junit/scala/lang/primitives/BoxUnboxTest.scala new file mode 100644 index 0000000000..94413b69b4 --- /dev/null +++ b/test/junit/scala/lang/primitives/BoxUnboxTest.scala @@ -0,0 +1,228 @@ +package scala.lang.primitives + +import org.junit.Assert._ +import org.junit.Test +import org.junit.runner.RunWith +import org.junit.runners.JUnit4 + +import scala.tools.testing.RunTesting + +object BoxUnboxTest { + class VCI(val x: Int) extends AnyVal { override def toString = "" + x } +} + +@RunWith(classOf[JUnit4]) +class BoxUnboxTest extends RunTesting { + import runner._ + + @Test + def boxUnboxInt(): Unit = { + import scala.tools.testing.AssertUtil._ + import org.junit.Assert._ + + def genericNull[T] = null.asInstanceOf[T] // allowed, see SI-4437, point 2 + + val b = new Integer(1) + val u = 1 + + assertEquals(1.toInt, u) + + assertEquals(Predef.int2Integer(1), b) + assertEquals(1: Integer, b) + assertEquals(Int.box(1), b) + assertEquals(1.asInstanceOf[Object], b) + + assertThrows[ClassCastException]("".asInstanceOf[Integer]) + + assertEquals(Predef.Integer2int(b), u) + assertEquals(b: Int, u) + assertEquals(Int.unbox(b), u) + assertEquals(b.asInstanceOf[Int], u) + assertEquals(b.intValue, u) + assertEquals(b.toInt, u) + intWrapper(b).toInt + + assertThrows[ClassCastException](Int.unbox("")) + assertThrows[ClassCastException]("".asInstanceOf[Int]) + + // null unboxing in various positions + + val n1 = Int.unbox(null) + assertEquals(n1, 0) + val n2 = Predef.Integer2int(null) + assertEquals(n2, 0) + val n3 = (null: Integer): Int + assertEquals(n3, 0) + val n4 = null.asInstanceOf[Int] + assertEquals(n4, 0) + val n5 = null.asInstanceOf[Int] == 0 + assertTrue(n5) + val n6 = null.asInstanceOf[Int] == null + assertFalse(n6) + val n7 = null.asInstanceOf[Int] != 0 + assertFalse(n7) + val n8 = null.asInstanceOf[Int] != null + assertTrue(n8) + + val mp = new java.util.HashMap[Int, Int] + val n9 = mp.get(0) + assertEquals(n9, 0) + val n10 = mp.get(0) == null // SI-602 + assertThrows[AssertionError](assertFalse(n10)) // should not throw + + def f(a: Any) = "" + a + val n11 = f(null.asInstanceOf[Int]) + assertEquals(n11, "0") + + def n12 = genericNull[Int] + assertEquals(n12, 0) + } + + @Test + def numericConversions(): Unit = { + import scala.tools.testing.AssertUtil._ + import org.junit.Assert._ + + val i1 = 1L.asInstanceOf[Int] + assertEquals(i1, 1) + assertThrows[ClassCastException] { + val i2 = (1L: Any).asInstanceOf[Int] // SI-1448, should not throw. see also SI-4437 point 1. + assertEquals(i2, 1) + } + } + + @Test + def boxUnboxBoolean(): Unit = { + val n1 = Option(null.asInstanceOf[Boolean]) + assertEquals(n1, Some(false)) + } + + @Test + def boxUnboxUnit(): Unit = { + // should not use assertEquals in this test: it takes two Object parameters. normally, Unit does + // not conform to Object, but for Java-defined methods scalac makes an exception and treats them + // as Any. passing a Unit as Any makes the compiler go through another layer of boxing, so it + // can hide some bugs (where we actually have a null, but the compiler makes it a ()). + import scala.tools.testing.AssertUtil._ + import org.junit.Assert._ + + var v = 0 + def eff() = { v = 1 } + def chk() = { assert(v == 1); v = 0 } + + val b = runtime.BoxedUnit.UNIT + + assert(eff() == b); chk() + assert(Unit.box(eff()) == b); chk() + assert(().asInstanceOf[Object] == b) + + Unit.unbox({eff(); b}); chk() + Unit.unbox({eff(); null}); chk() + assertThrows[ClassCastException](Unit.unbox({eff(); ""})); chk() + + val n1 = null.asInstanceOf[Unit] + assert(n1 == b) + + val n2 = null.asInstanceOf[Unit] == b + assert(n2) + + def f(a: Any) = "" + a + val n3 = f(null.asInstanceOf[Unit]) + assertEquals(n3, "()") + } + + @Test + def t9671(): Unit = { + import scala.lang.primitives.BoxUnboxTest.VCI + + def f1(a: Any) = "" + a + def f2(a: AnyVal) = "" + a + def f3[T](a: T) = "" + a + def f4(a: Int) = "" + a + def f5(a: VCI) = "" + a + def f6(u: Unit) = "" + u + + def n1: AnyRef = null + def n2: Null = null + def n3: Any = null + def n4[T]: T = null.asInstanceOf[T] + + def npe(s: => String) = try { s; throw new Error() } catch { case _: NullPointerException => "npe" } + + val result = + f1(null.asInstanceOf[Int]) + + f1( n1.asInstanceOf[Int]) + + f1( n2.asInstanceOf[Int]) + + f1( n3.asInstanceOf[Int]) + + f1( n4[Int]) + // "null" + "-" + + f1(null.asInstanceOf[VCI]) + + npe(f1( n1.asInstanceOf[VCI])) + // SI-8097 + f1( n2.asInstanceOf[VCI]) + + npe(f1( n3.asInstanceOf[VCI])) + // SI-8097 + f1( n4[VCI]) + // "null" + "-" + + f1(null.asInstanceOf[Unit]) + + f1( n1.asInstanceOf[Unit]) + + f1( n2.asInstanceOf[Unit]) + + f1( n3.asInstanceOf[Unit]) + + f1( n4[Unit]) + // "null" + "-" + + f2(null.asInstanceOf[Int]) + + f2( n1.asInstanceOf[Int]) + + f2( n2.asInstanceOf[Int]) + + f2( n3.asInstanceOf[Int]) + + f2( n4[Int]) + // "null" + "-" + + f2(null.asInstanceOf[VCI]) + + npe(f2( n1.asInstanceOf[VCI])) + // SI-8097 + f2( n2.asInstanceOf[VCI]) + + npe(f2( n3.asInstanceOf[VCI])) + // SI-8097 + f2( n4[VCI]) + // "null" + "-" + + f2(null.asInstanceOf[Unit]) + + f2( n1.asInstanceOf[Unit]) + + f2( n2.asInstanceOf[Unit]) + + f2( n3.asInstanceOf[Unit]) + + f2( n4[Unit]) + // "null" + "-" + + f3(null.asInstanceOf[Int]) + + f3( n1.asInstanceOf[Int]) + + f3( n2.asInstanceOf[Int]) + + f3( n3.asInstanceOf[Int]) + + f3( n4[Int]) + // "null" + "-" + + f3(null.asInstanceOf[VCI]) + + npe(f3( n1.asInstanceOf[VCI])) + // SI-8097 + f3( n2.asInstanceOf[VCI]) + + npe(f3( n3.asInstanceOf[VCI])) + // SI-8097 + f3( n4[VCI]) + // "null" + "-" + + f3(null.asInstanceOf[Unit]) + + f3( n1.asInstanceOf[Unit]) + + f3( n2.asInstanceOf[Unit]) + + f3( n3.asInstanceOf[Unit]) + + f3( n4[Unit]) + // "null" + "-" + + f4(null.asInstanceOf[Int]) + + f4( n1.asInstanceOf[Int]) + + f4( n2.asInstanceOf[Int]) + + f4( n3.asInstanceOf[Int]) + + f4( n4[Int]) + + "-" + + f5(null.asInstanceOf[VCI]) + + npe(f5( n1.asInstanceOf[VCI])) + // SI-8097 + f5( n2.asInstanceOf[VCI]) + + npe(f5( n3.asInstanceOf[VCI])) + // SI-8097 + npe(f5( n4[VCI])) + // SI-8097 + "-" + + f6(null.asInstanceOf[Unit]) + + f6( n1.asInstanceOf[Unit]) + + f6( n2.asInstanceOf[Unit]) + + f6( n3.asInstanceOf[Unit]) + + f6( n4[Unit]) // "null" + assertEquals(result, + "0000null-0npe0npenull-()()()()null-0000null-0npe0npenull-()()()()null-0000null-0npe0npenull-()()()()null-00000-0npe0npenpe-()()()()null") + } + +} diff --git a/test/junit/scala/lang/primitives/NaNTest.scala b/test/junit/scala/lang/primitives/NaNTest.scala new file mode 100644 index 0000000000..f4c4258395 --- /dev/null +++ b/test/junit/scala/lang/primitives/NaNTest.scala @@ -0,0 +1,38 @@ +package scala.lang.primitives + +import org.junit.Assert._ +import org.junit.Test +import org.junit.runner.RunWith +import org.junit.runners.JUnit4 + +import scala.tools.testing.RunTesting + +@RunWith(classOf[JUnit4]) +class NaNTest extends RunTesting { + + @Test + def compNaNFalse(): Unit = { + def code(tp: String) = + s"""val n = $tp.NaN + |def ne(x: $tp, y: $tp) = x != y + |val fs: List[($tp, $tp) => Boolean] = List(_ < _, _ <= _, _ > _, _ >= _, _ == _, (x, y) => !ne(x, y)) + |val vs = List[$tp](n, 1, -1, 0) + |for (f <- fs; v <- vs; (x, y) <- List((n, v), (v, n))) yield f(x, y) + """.stripMargin + + runner.run[List[Boolean]](code("Double")).foreach(assertFalse) + runner.run[List[Boolean]](code("Float")).foreach(assertFalse) + } + + @Test + def genericEqNe(): Unit = { + def code(tp: String) = + s"""def a[T](x: T, y: T) = x == y + |def b[T](x: T, y: T) = x != y + |val n = $tp.NaN + |a(n, n) :: a(n, 0) :: a (0, n) :: !b(n, n) :: !b(n, 0) :: !b(0, n) :: Nil + """.stripMargin + runner.run[List[Boolean]](code("Double")).foreach(assertFalse) + runner.run[List[Boolean]](code("Float")).foreach(assertFalse) + } +} diff --git a/test/junit/scala/lang/primitives/PredefAutoboxingTest.scala b/test/junit/scala/lang/primitives/PredefAutoboxingTest.scala new file mode 100644 index 0000000000..ab31a9e8f1 --- /dev/null +++ b/test/junit/scala/lang/primitives/PredefAutoboxingTest.scala @@ -0,0 +1,33 @@ +package scala.lang.primitives + +import org.junit.Assert._ +import org.junit.Test +import org.junit.runner.RunWith +import org.junit.runners.JUnit4 + +@RunWith(classOf[JUnit4]) +class PredefAutoboxingTest { + @Test def unboxNullByte() = + assertEquals(Predef.Byte2byte(null), 0.toByte) + + @Test def unboxNullShort() = + assertEquals(Predef.Short2short(null), 0.toShort) + + @Test def unboxNullCharacter() = + assertEquals(Predef.Character2char(null), 0.toChar) + + @Test def unboxNullInteger() = + assertEquals(Predef.Integer2int(null), 0) + + @Test def unboxNullLong() = + assertEquals(Predef.Long2long(null), 0L) + + @Test def unboxNullFloat() = + assertEquals(Predef.Float2float(null), 0F, 0F) + + @Test def unboxNullDouble() = + assertEquals(Predef.Double2double(null), 0D, 0D) + + @Test def unboxNullBoolean() = + assertEquals(Predef.Boolean2boolean(null), false) +} |