Created Ratcliff/Obershelp metric, command, and specs.

1 files changed, 42 insertions, 0 deletions

diff --git a/core/source/test/scala/com/rockymadden/stringmetric/similarity/RatcliffObershelpMetricSpec.scala b/core/source/test/scala/com/rockymadden/stringmetric/similarity/RatcliffObershelpMetricSpec.scala
new file mode 100755
index 0000000..e1ff9cf
--- /dev/null
+++ b/core/source/test/scala/com/rockymadden/stringmetric/similarity/RatcliffObershelpMetricSpec.scala
@@ -0,0 +1,42 @@
+package com.rockymadden.stringmetric.similarity
+
+import com.rockymadden.stringmetric.ScalaTest
+import org.junit.runner.RunWith
+import org.scalatest.junit.JUnitRunner
+
+@RunWith(classOf[JUnitRunner])
+final class RatcliffObershelpMetricSpec extends ScalaTest {
+	"RatcliffObershelpMetric" should provide {
+		"compare method" when passed {
+			"empty arguments" should returns {
+				"None" in {
+					RatcliffObershelpMetric.compare("", "").isDefined should be (false)
+					RatcliffObershelpMetric.compare("abc", "").isDefined should be (false)
+					RatcliffObershelpMetric.compare("", "xyz").isDefined should be (false)
+				}
+			}
+			"equal arguments" should returns {
+				"0" in {
+					RatcliffObershelpMetric.compare("abc", "abc").get should be (1)
+					RatcliffObershelpMetric.compare("123", "123").get should be (1)
+				}
+			}
+			"unequal arguments" should returns {
+				"Double indicating distance" in {
+					RatcliffObershelpMetric.compare("abc", "xyz").get should be (0)
+					RatcliffObershelpMetric.compare("123", "456").get should be (0)
+				}
+			}
+			"valid arguments" should returns {
+				"Double indicating distance" in {
+					RatcliffObershelpMetric.compare("aleksander", "alexandre").get should be (0.7368421052631579)
+					RatcliffObershelpMetric.compare("alexandre", "aleksander").get should be (0.7368421052631579)
+					RatcliffObershelpMetric.compare("pennsylvania", "pencilvaneya").get should be (0.6666666666666666)
+					RatcliffObershelpMetric.compare("pencilvaneya", "pennsylvania").get should be (0.6666666666666666)
+					RatcliffObershelpMetric.compare("abcefglmn", "abefglmo").get should be (0.8235294117647058)
+					RatcliffObershelpMetric.compare("abefglmo", "abcefglmn").get should be (0.8235294117647058)
+				}
+			}
+		}
+	}
+}