1 files changed, 37 insertions, 0 deletions
diff --git a/test/scalacheck/primitive-eqeq.scala b/test/scalacheck/primitive-eqeq.scala
new file mode 100644
index 0000000000..fda8087bb0
--- /dev/null
+++ b/test/scalacheck/primitive-eqeq.scala
@@ -0,0 +1,37 @@
+import org.scalacheck._
+import Prop._
+import Gen._
+
+object PrimitiveEqEqTest extends Properties("==") {
+  def equalObjectsEqualHashcodes(x: Any, y: Any) = (x != y) || (x == y && x.## == y.##)
+
+  // ticket #2087
+  property("short/char") = forAll { (x: Short) => {
+      val ch: Char = x.toChar
+      (x == ch) == (ch == x)
+    }
+  }
+
+  property("symmetry") = forAll { (x: AnyVal, y: AnyVal) => (x == y) == (y == x) }
+  property("transitivity") = forAll { (x: AnyVal, y: AnyVal, z: AnyVal) => x != y || y != z || x == z }
+
+  property("##") = forAll {
+    (x: Short) => {
+      val anyvals = List(x.toByte, x.toChar, x, x.toInt, x.toLong, x.toFloat, x.toDouble, BigInt(x), BigDecimal(x))
+      val shortAndLarger = anyvals drop 2
+
+      val result = (
+        ((anyvals, anyvals).zipped forall equalObjectsEqualHashcodes) &&
+        ((shortAndLarger, shortAndLarger).zipped forall (_ == _)) &&
+        ((shortAndLarger, shortAndLarger).zipped forall ((x, y) => (x: Any) == (y: Any)))
+      )
+      result
+    }
+  }
+  property("## 2") = forAll {
+    (dv: Double) => {
+      val fv = dv.toFloat
+      (fv != dv) || (fv.## == dv.##)
+    }
+  }
+}