Port GeoHashTest to Scalatest

Author: dwins

geoscript/build.sbt

@@ -21,6 +21,6 @@ libraryDependencies ++=
   Seq(
     "javax.media" % "jai_core" % "1.1.3",
     "org.scala-tools.testing" %% "specs" % "[1.6,1.7)" % "test",
-    "org.scala-tools.testing" %% "specs" % "[1.6,1.7)" % "test",
+    "org.scalatest" %% "scalatest" % "1.8" % "test",
     "com.lowagie" % "itext" % "2.1.5"
   )

geoscript/src/test/scala/GeoHashTest.scala

@@ -1,27 +1,27 @@
 package org.geoscript
 
-import org.specs._
+import org.scalatest._, matchers._
 import GeoHash._
 
-class GeoHashTest extends Specification {
+class GeoHashTest extends FunSuite with ShouldMatchers {
   val cases = Seq(
     (57.64911, 10.40744, 11, "u4pruydqqvj"),
     (42.6, -5.6, 5, "ezs42")
   )
 
-  "The GeoHash examples from Wikipedia" should {
-    "produce the cited hashes" in {
-      cases.foreach { case (lon, lat, level, hash) => 
-        geohash(lon, lat, level) must_== (hash)
-      }
+  test("produce the cited hashes") {
+    cases.foreach { case (lon, lat, level, hash) => 
+      geohash(lon, lat, level) should be(hash)
     }
+  }
 
-    "work in reverse" in {
-      cases.foreach { case (lon, lat, level, hash) => 
-        val (actualLon, actualLat) = decode(hash)
-        actualLon must beCloseTo(lon, 0.005)
-        actualLat must beCloseTo(lat, 0.005)
-      }
+  test("work in reverse") {
+    cases.foreach { case (lon, lat, level, hash) => 
+      val (actualLon, actualLat) = decode(hash)
+      assert(math.abs(actualLon - lon) < 0.005,
+        "Actual longitude %f not within tolerance of expected %f" format(actualLon, lon))
+      assert(math.abs(actualLat - lat) < 0.005,
+        "Actual latitude %f not within tolerance of expected %f" format(actualLat, lat))
     }
   }
 }