diff options
Diffstat (limited to 'core/src/test/scala/com/rockymadden/stringmetric/similarity/JaccardMetricSpec.scala')
| -rwxr-xr-x | core/src/test/scala/com/rockymadden/stringmetric/similarity/JaccardMetricSpec.scala | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/core/src/test/scala/com/rockymadden/stringmetric/similarity/JaccardMetricSpec.scala b/core/src/test/scala/com/rockymadden/stringmetric/similarity/JaccardMetricSpec.scala new file mode 100755 index 0000000..4c04193 --- /dev/null +++ b/core/src/test/scala/com/rockymadden/stringmetric/similarity/JaccardMetricSpec.scala @@ -0,0 +1,60 @@ +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 JaccardMetricSpec extends ScalaTest { "JaccardMetric" should provide { + "compare method" when passed { + "empty arguments" should returns { + "None" in { + JaccardMetric(1).compare("", "").isDefined should be (false) + JaccardMetric(1).compare("abc", "").isDefined should be (false) + JaccardMetric(1).compare("", "xyz").isDefined should be (false) + } + } + "equal arguments" should returns { + "1" in { + JaccardMetric(1).compare("abc", "abc").get should be (1) + JaccardMetric(2).compare("abc", "abc").get should be (1) + JaccardMetric(3).compare("abc", "abc").get should be (1) + } + } + "unequal arguments" should returns { + "0" in { + JaccardMetric(1).compare("abc", "xyz").get should be (0) + JaccardMetric(2).compare("abc", "xyz").get should be (0) + JaccardMetric(3).compare("abc", "xyz").get should be (0) + } + } + "invalid arguments" should returns { + "None" in { + JaccardMetric(2).compare("n", "naght").isDefined should be (false) + JaccardMetric(2).compare("night", "n").isDefined should be (false) + JaccardMetric(3).compare("ni", "naght").isDefined should be (false) + JaccardMetric(3).compare("night", "na").isDefined should be (false) + } + } + "valid arguments" should returns { + "Double indicating distance" in { + JaccardMetric(1).compare("night", "nacht").get should be (0.42857142857142855) + JaccardMetric(1).compare("night", "naght").get should be (0.6666666666666666) + JaccardMetric(1).compare("context", "contact").get should be (0.5555555555555556) + + JaccardMetric(2).compare("night", "nacht").get should be (0.14285714285714285) + JaccardMetric(2).compare("night", "naght").get should be (0.3333333333333333) + JaccardMetric(2).compare("context", "contact").get should be (0.3333333333333333) + JaccardMetric(2).compare("contextcontext", "contact").get should be (0.1875) + JaccardMetric(2).compare("context", "contactcontact").get should be (0.1875) + JaccardMetric(2).compare("ht", "nacht").get should be (0.25) + JaccardMetric(2).compare("xp", "nacht").get should be (0) + JaccardMetric(2).compare("ht", "hththt").get should be (0.2) + + JaccardMetric(3).compare("night", "nacht").get should be (0) + JaccardMetric(3).compare("night", "naght").get should be (0.2) + JaccardMetric(3).compare("context", "contact").get should be (0.25) + } + } + } +}} |