Mutable list test - passes.

1 files changed, 126 insertions, 0 deletions

diff --git a/test/files/run/MutableListTest.scala b/test/files/run/MutableListTest.scala
new file mode 100644
index 0000000000..322a368b16
--- /dev/null
+++ b/test/files/run/MutableListTest.scala
@@ -0,0 +1,126 @@
+
+
+
+import scala.collection.mutable.MutableList
+
+
+
+class ExtList[T] extends MutableList[T] {
+  def printState {
+    println("Length: " + len)
+    println("Last elem: " + last0.elem)
+    println("First elem: " + first0.elem)
+    println("After first elem: " + first0.next.elem)
+    println("After first: " + first0.next)
+    println("Last: " + last0)
+  }
+}
+
+object Test {
+
+  def main(args: Array[String]) {
+    testEmpty
+    testAddElement
+    testAddFewElements
+    testAddMoreElements
+    testTraversables
+  }
+
+  def testEmpty {
+    val mlist = new MutableList[Int]
+    assert(mlist.isEmpty)
+    assert(mlist.get(0) == None)
+  }
+
+  def testAddElement {
+    val mlist = new MutableList[Int]
+    mlist += 17
+    assert(mlist.nonEmpty)
+    assert(mlist.length == 1)
+    assert(mlist.head == 17)
+    assert(mlist.last == 17)
+    assert(mlist(0) == 17)
+    assert(mlist.tail.isEmpty)
+    assert(mlist.tail.length == 0)
+    mlist(0) = 101
+    assert(mlist(0) == 101)
+    assert(mlist.toList == List(101))
+    assert(mlist.tail.get(0) == None)
+    assert((mlist.tail += 19).head == 19)
+    assert(mlist.tail.length == 0)
+  }
+
+  def testAddFewElements {
+    val mlist = new MutableList[Int]
+    for (i <- 0 until 2) mlist += i
+//    mlist.printState
+    for (i <- 0 until 2) assert(mlist(i) == i)
+    assert(mlist.length == 2)
+    assert(mlist.nonEmpty)
+    assert(mlist.tail.length == 1)
+    assert(mlist.tail.tail.length == 0)
+    assert(mlist.tail.tail.isEmpty)
+  }
+
+  def testAddMoreElements {
+    val mlist = new MutableList[Int]
+    for (i <- 0 until 10) mlist += i * i
+    assert(mlist.nonEmpty)
+    assert(mlist.length == 10)
+    for (i <- 0 until 10) assert(mlist(i) == i * i)
+    assert(mlist(5) == 5 * 5)
+    assert(mlist(9) == 9 * 9)
+    var sometail = mlist
+    for (i <- 0 until 10) {
+      assert(sometail.head == i * i)
+      sometail = sometail.tail
+    }
+    mlist(5) = -25
+    assert(mlist(5) == -25)
+    mlist(0) = -1
+    assert(mlist(0) == -1)
+    mlist(9) = -81
+    assert(mlist(9) == -81)
+    assert(mlist(5) == -25)
+    assert(mlist(0) == -1)
+    assert(mlist.last == -81)
+    mlist.clear
+    assert(mlist.isEmpty)
+    mlist += 1001
+    assert(mlist.head == 1001)
+    mlist += 9999
+    assert(mlist.tail.head == 9999)
+    assert(mlist.last == 9999)
+  }
+
+  def testTraversables {
+    val mlist = new MutableList[Int]
+    for (i <- 0 until 10) mlist += i * i
+    var lst = mlist.drop(5)
+    for (i <- 0 until 5) assert(lst(i) == (i + 5) * (i + 5))
+    lst = lst.take(3)
+    for (i <- 0 until 3) assert(lst(i) == (i + 5) * (i + 5))
+    lst += 129
+    assert(lst(3) == 129)
+    assert(lst.last == 129)
+    assert(lst.length == 4)
+    lst += 7
+    assert(lst.init.last == 129)
+    assert(lst.length == 5)
+    lst.clear
+    assert(lst.length == 0)
+    for (i <- 0 until 5) lst += i
+    assert(lst.reduceLeft(_ + _) == 10)
+  }
+
+}
+
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