Sync list-ops tests (#600)

Author: ryanplusplus

exercises/practice/list-ops/.meta/tests.toml

@@ -15,6 +15,9 @@ description = "append entries to a list and return the new list -> empty lists"
 [2c894696-b609-4569-b149-8672134d340a]
 description = "append entries to a list and return the new list -> list to empty list"
 
+[e842efed-3bf6-4295-b371-4d67a4fdf19c]
+description = "append entries to a list and return the new list -> empty list to list"
+
 [71dcf5eb-73ae-4a0e-b744-a52ee387922f]
 description = "append entries to a list and return the new list -> non-empty lists"
 

exercises/practice/list-ops/list-ops_spec.lua

@@ -14,6 +14,12 @@ describe('list-ops', function()
       assert.are.same(expected, actual)
     end)
 
+    it('empty list to list', function()
+      local expected = { 1, 2, 3, 4 }
+      local actual = list_ops.append({ 1, 2, 3, 4 }, {})
+      assert.are.same(expected, actual)
+    end)
+
     it('non-empty lists', function()
       local expected = { 1, 2, 2, 3, 4, 5 }
       local actual = list_ops.append({ 1, 2 }, { 2, 3, 4, 5 })