1 files changed, 53 insertions, 0 deletions
diff --git a/src/main/scala/com/drivergrp/core/generators.scala b/src/main/scala/com/drivergrp/core/generators.scala
new file mode 100644
index 0000000..89d6e56
--- /dev/null
+++ b/src/main/scala/com/drivergrp/core/generators.scala
@@ -0,0 +1,53 @@
+package com.drivergrp.core
+
+import java.math.MathContext
+
+import com.drivergrp.core.id.{Id, Name}
+import com.drivergrp.core.time.{Time, TimeRange}
+
+import scala.reflect.ClassTag
+import scala.util.Random
+
+
+object generators {
+
+  private val random = new Random
+  import random._
+
+  private val DefaultMaxLength = 100
+
+
+  def nextId[T](): Id[T] = Id[T](nextLong())
+
+  def nextName[T](maxLength: Int = DefaultMaxLength): Name[T] = Name[T](nextString(maxLength))
+
+  def nextString(maxLength: Int = DefaultMaxLength) = random.nextString(maxLength)
+
+  def nextOption[T](value: => T): Option[T] = if(nextBoolean) Option(value) else None
+
+  def nextPair[L, R](left: => L, right: => R): (L, R) = (left, right)
+
+  def nextTriad[F, S, T](first: => F, second: => S, third: => T): (F, S, T) = (first, second, third)
+
+  def nextTime(): Time = Time(math.abs(nextLong() % System.currentTimeMillis))
+
+  def nextTimeRange(): TimeRange = TimeRange(nextTime(), nextTime())
+
+  def nextBigDecimal(multiplier: Double = 1000000.00, precision: Int = 2): BigDecimal =
+    BigDecimal(multiplier * nextDouble, new MathContext(precision))
+
+  def oneOf[T](items: Seq[T]): T = items(nextInt(items.size))
+
+  def arrayOf[T : ClassTag](generator: => T, maxLength: Int = DefaultMaxLength): Array[T] = Array.fill(maxLength)(generator)
+
+  def seqOf[T](generator: => T, maxLength: Int = DefaultMaxLength): Seq[T] = Seq.fill(maxLength)(generator)
+
+  def vectorOf[T](generator: => T, maxLength: Int = DefaultMaxLength): Vector[T] = Vector.fill(maxLength)(generator)
+
+  def listOf[T](generator: => T, maxLength: Int = DefaultMaxLength): List[T] = List.fill(maxLength)(generator)
+
+  def setOf[T](generator: => T, maxLength: Int = DefaultMaxLength): Set[T] = seqOf(generator, maxLength).toSet
+
+  def mapOf[K, V](maxLength: Int, keyGenerator: => K, valueGenerator: => V): Map[K, V] =
+    seqOf(nextPair(keyGenerator, valueGenerator), maxLength).toMap
+}
+\ No newline at end of file