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package org.hashtree.stringmetric.cli.similarity
import org.hashtree.stringmetric.ScalaTest
import org.junit.runner.RunWith
import org.scalatest.junit.JUnitRunner
@RunWith(classOf[JUnitRunner])
final class nGramAlgorithmSpec extends ScalaTest {
"nGramAlgorithm" should provide {
"main method" when passed {
"valid dashless argument and valid n argument" should executes {
"print N-Gram representation" in {
val out = new java.io.ByteArrayOutputStream()
Console.withOut(out)(
nGramAlgorithm.main(
Array(
"--unitTest",
"--debug",
"--n=1",
"abc"
)
)
)
out.toString should equal ("a|b|c\n")
out.reset()
Console.withOut(out)(
nGramAlgorithm.main(
Array(
"--unitTest",
"--debug",
"--n=2",
"abc"
)
)
)
out.toString should equal ("ab|bc\n")
out.reset()
}
}
"valid dashless argument and invalid n argument" should throws {
"IllegalArgumentException" in {
evaluating {
nGramAlgorithm.main(
Array(
"--unitTest",
"abc",
"abc"
)
)
} should produce [IllegalArgumentException]
}
}
"no dashless argument" should throws {
"IllegalArgumentException" in {
evaluating {
nGramAlgorithm.main(Array("--unitTest", "--debug"))
} should produce [IllegalArgumentException]
}
}
}
}
}
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