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Diffstat (limited to 'test/files/run/t6331.scala')
-rw-r--r-- | test/files/run/t6331.scala | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/test/files/run/t6331.scala b/test/files/run/t6331.scala new file mode 100644 index 0000000000..4e43a7686e --- /dev/null +++ b/test/files/run/t6331.scala @@ -0,0 +1,71 @@ +import scala.tools.partest._ +import java.io._ +import scala.tools.nsc._ +import scala.tools.nsc.util.CommandLineParser +import scala.tools.nsc.{Global, Settings, CompilerCommand} +import scala.tools.nsc.reporters.ConsoleReporter + +// Test of Constant#equals, which must must account for floating point intricacies. +object Test extends DirectTest { + + override def code = "" + + override def show() { + val global = newCompiler() + import global._ + + def check(c1: Any, c2: Any): Unit = { + val const1 = Constant(c1) + val const2 = Constant(c2) + val equal = const1 == const2 + def show(a: Any) = "" + a + (a match { + case _: Byte => ".toByte" + case _: Short => ".toShort" + case _: Long => "L" + case _: Float => "f" + case _: Double => "d" + case _ => "" + }) + val op = if (equal) "==" else "!=" + println(f"${show(c1)}%12s $op ${show(c2)}") + + val hash1 = const1.hashCode + val hash2 = const2.hashCode + val hashesEqual = hash1 == hash2 + val hashBroken = equal && !hashesEqual + if (hashBroken) println(f"$hash1%12s != $hash2 // hash codes differ for equal objects!!") + } + + check((), ()) + + check(true, true) + check(true, false) + check(false, true) + + check(0.toByte, 0.toByte) + check(0.toByte, 1.toByte) + + check(0.toShort, 0.toShort) + check(0.toShort, 1.toShort) + + check(0, 0) + check(0, 1) + + check(0L, 0L) + check(0L, 1L) + + check(0f, 0f) + check(0f, -0f) + check(-0f, 0f) + check(Float.NaN, Float.NaN) + + check(0d, 0d) + check(0d, -0d) + check(-0d, 0d) + check(Double.NaN, Double.NaN) + + check(0, 0d) + check(0, 0L) + check(0d, 0f) + } +} |