newly written circulararray

src/net/torvald/terrarum/tests/CircularArrayTest.kt

@@ -8,38 +8,58 @@ import net.torvald.util.CircularArray
 class CircularArrayTest {
 
     operator fun invoke() {
-        val testSet = CircularArray<Int?>(5)
-        val testSet2 = CircularArray<Int?>(5)
+        val testSet = CircularArray<Int?>(5, true)
+        val testSet2 = CircularArray<Int?>(5, true)
+        testSet2.overwritingPolicy = { println("Overwritten: $it") }
+        val testSet3 = CircularArray<Int?>(5, true)
 
         for (i in 1..5) {
-            testSet.add(i)
+            testSet.appendHead(i)
         }
 
         println("Metadata:")
         println(testSet)
         println("forEach():")
-        testSet.forEach { print("$it ") }
+        testSet.forEach { print("$it ") } // 1 2 3 4 5
         println("\nfold(0, sum):")
-        println(testSet.fold(0) { acc, v -> acc + (v ?: 0) })
+        println(testSet.fold(0) { acc, v -> acc + (v ?: 0) }) // 15
         println("Raw:")
-        testSet.buffer.forEach { print("$it ") }
+        testSet.buffer.forEach { print("$it ") } // 1 2 3 4 5
         println()
 
         println()
         for (i in 1..6) {
-            testSet2.add(i)
+            testSet2.appendHead(i) // must print "Overwritten: 1"
         }
 
         println("Metadata:")
         println(testSet2)
-        println("forEach():")
+        println("forEach():") // 2 3 4 5 6
         testSet2.forEach { print("$it ") }
         println("\nfold(0, sum):")
-        println(testSet2.fold(0) { acc, v -> acc + (v ?: 0) })
+        println(testSet2.fold(0) { acc, v -> acc + (v ?: 0) }) // 20
         println("Raw:")
-        testSet2.buffer.forEach { print("$it ") }
+        testSet2.buffer.forEach { print("$it ") } // 6 2 3 4 5
         println()
 
+        println()
+        for (i in 1..5) {
+            testSet3.appendHead(i)
+        }
+
+        val a1 = testSet3.removeTail()
+        val a2 = testSet3.removeTail()
+        println("Removed elems: $a1 $a2")
+
+        println("Metadata:")
+        println(testSet3)
+        println("forEach():") // 3 4 5
+        testSet3.forEach { print("$it ") }
+        println("\nfold(0, sum):")
+        println(testSet3.fold(0) { acc, v -> acc + (v ?: 0) }) // 12
+        println("Raw:")
+        testSet3.buffer.forEach { print("$it ") } // 1 2 3 4 5
+        println()
     }
 
 }