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Diffstat (limited to 'core/source/test/scala/com/rockymadden/stringmetric/similarity/WeightedLevenshteinMetricSpec.scala')
| -rwxr-xr-x | core/source/test/scala/com/rockymadden/stringmetric/similarity/WeightedLevenshteinMetricSpec.scala | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/core/source/test/scala/com/rockymadden/stringmetric/similarity/WeightedLevenshteinMetricSpec.scala b/core/source/test/scala/com/rockymadden/stringmetric/similarity/WeightedLevenshteinMetricSpec.scala new file mode 100755 index 0000000..9c46c89 --- /dev/null +++ b/core/source/test/scala/com/rockymadden/stringmetric/similarity/WeightedLevenshteinMetricSpec.scala @@ -0,0 +1,64 @@ +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 WeightedLevenshteinMetricSpec extends ScalaTest { + import WeightedLevenshteinMetricSpec.{Metric, Options} + + "WeightedLevenshteinMetric" should provide { + "compare method" when passed { + "empty arguments" should returns { + "None" in { + Metric.compare("", "")(Options).isDefined should be (false) + Metric.compare("abc", "")(Options).isDefined should be (false) + Metric.compare("", "xyz")(Options).isDefined should be (false) + } + } + "equal arguments" should returns { + "0" in { + Metric.compare("abc", "abc")(Options).get should be (0) + Metric.compare("123", "123")(Options).get should be (0) + } + } + "unequal arguments" should returns { + "Double indicating distance" in { + Metric.compare("abc", "xyz")(Options).get should be (3) + Metric.compare("123", "456")(Options).get should be (3) + } + } + "valid arguments" should returns { + "Double indicating distance" in { + Metric.compare("az", "z")(Options).get should be (10) + Metric.compare("z", "az")(Options).get should be (0.1) + Metric.compare("a", "z")(Options).get should be (1) + Metric.compare("z", "a")(Options).get should be (1) + Metric.compare("ab", "yz")(Options).get should be (2) + Metric.compare("yz", "ab")(Options).get should be (2) + Metric.compare("0", "0123456789")(Options).get should be (0.9) + Metric.compare("0123456789", "0")(Options).get should be (90) + Metric.compare("book", "back")(Options).get should be (2) + Metric.compare("back", "book")(Options).get should be (2) + Metric.compare("hosp", "hospital")(Options).get should be (0.4) + Metric.compare("hospital", "hosp")(Options).get should be (40) + Metric.compare("clmbs blvd", "columbus boulevard")(Options).get should be (0.8) + Metric.compare("columbus boulevard", "clmbs blvd")(Options).get should be (80) + } + } + } + } + "WeightedLevenshteinMetric companion object" should provide { + "pass-through compare method" should returns { + "same value as class" in { + WeightedLevenshteinMetric.compare("hospital", "hosp")(Options).get should be (40) + } + } + } +} + +object WeightedLevenshteinMetricSpec { + private final val Options = Tuple3[BigDecimal, BigDecimal, BigDecimal](10, 0.1, 1) + private final val Metric = WeightedLevenshteinMetric() +} |