package scala.collection.concurrent

import org.junit.{Assert, Test}

class TrieMapTest {

  private def check[T](result2: List[Any])(f: TrieMap[String, String] => TraversableOnce[Any]) = {
    val m = TrieMap[String, String]()
    val values = f(m)
    m.put("k", "v")
    Assert.assertEquals(Nil, values.toList)
    Assert.assertEquals(result2, f(m).toList)
  }

  @Test
  def iterator(): Unit = {
    check(List(("k", "v")))(_.iterator)
  }

  @Test
  def values(): Unit = {
    check(List("v"))(_.values)
  }

  @Test
  def valuesIterator(): Unit = {
    check(List("v"))(_.valuesIterator)
  }

  @Test
  def keySet(): Unit = {
    check(List("k"))(_.keySet)
  }

  @Test
  def keysIterator(): Unit = {
    check(List("k"))(_.keysIterator)
  }

  @Test
  def keys(): Unit = {
    check(List("k"))(_.keys)
  }

  @Test
  def filterKeys(): Unit = {
    check(List(("k", "v")))(_.filterKeys(_ => true))
  }

  @Test
  def mapValues(): Unit = {
    check(List(("k", "v")))(_.mapValues(x => x))
  }
}