subtree(users/wpcarro): docking briefcase at '24f5a642' r/3226

git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c09813172c79820bcf526bb10cf4208
git-subtree-split: 24f5a642af3aa1627bbff977f0a101907a02c69f
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789

1 files changed, 18 insertions, 0 deletions

diff --git a/users/wpcarro/assessments/semiprimes/server/test/extras_test.exs b/users/wpcarro/assessments/semiprimes/server/test/extras_test.exs
new file mode 100644
index 000000000000..67d0b8875cae
--- /dev/null
+++ b/users/wpcarro/assessments/semiprimes/server/test/extras_test.exs
@@ -0,0 +1,18 @@
+defmodule ExtrasTest do
+  use ExUnit.Case
+  doctest Extras
+
+  describe "range" do
+    test "returns an empty list for descending sequences" do
+      assert Extras.range(0, -2) == []
+    end
+
+    test "returns an empty list for non-ascending sequences" do
+      assert Extras.range(8, 8) == []
+    end
+
+    test "returns an exclusive range" do
+      assert Extras.range(3, 6) == [3, 4, 5]
+    end
+  end
+end