setenv

kong_helper_setenv.patch

diff --git a/spec/helpers.lua b/spec/helpers.lua
index 85e9589d6..061ac68d0 100644
--- a/spec/helpers.lua
+++ b/spec/helpers.lua
@@ -1415,4 +1415,11 @@ return {
     ngx.ctx.workspaces = old_ws
     return res
   end,
+  setenv = function(env, value)
+    local ffi = require "ffi"
+    ffi.cdef[[
+    int setenv(const char *name, const char *value, int overwrite);
+    ]]
+    return ffi.C.setenv(env, value, 1) == 0
+  end
 }