unit tests

src/main/scala/org/broadinstitute/dsde/firecloud/utils/StatusCodeUtils.scala

@@ -1,6 +1,6 @@
 package org.broadinstitute.dsde.firecloud.utils
 
-import akka.http.scaladsl.model.{StatusCode, StatusCodes}
+import akka.http.scaladsl.model.StatusCode
 import akka.http.scaladsl.model.StatusCodes.InternalServerError
 
 import scala.util.Try

src/test/scala/org/broadinstitute/dsde/firecloud/utils/StatusCodeUtilsSpec.scala

@@ -0,0 +1,38 @@
+package org.broadinstitute.dsde.firecloud.utils
+
+import akka.http.scaladsl.model.StatusCode
+import akka.http.scaladsl.model.StatusCodes._
+import org.scalatest.flatspec.AnyFlatSpec
+import org.scalatest.matchers.should.Matchers.convertToAnyShouldWrapper
+
+class StatusCodeUtilsSpec extends AnyFlatSpec with StatusCodeUtils {
+
+  behavior of "statusCodeFrom"
+
+  val expectedCases: Map[Int, StatusCode] = Map(
+    200 -> OK,
+    404 -> NotFound,
+    503 -> ServiceUnavailable
+  )
+
+  expectedCases.foreach { case (intCode, statusCode) =>
+    it should s"handle known code $intCode" in {
+      statusCodeFrom(intCode) shouldBe statusCode
+    }
+  }
+
+  val unknownCodes: List[Int] = List(-1, 0, 42, 222, 555)
+
+  unknownCodes.foreach { intCode =>
+    it should s"default unknown code $intCode to InternalServerError" in {
+      statusCodeFrom(intCode) shouldBe InternalServerError
+    }
+  }
+
+  unknownCodes.foreach { intCode =>
+    it should s"default unknown code $intCode to the caller-supplied default" in {
+      statusCodeFrom(intCode, ImATeapot) shouldBe ImATeapot
+    }
+  }
+
+}