diff --git a/lua/neotest-golang/init.lua b/lua/neotest-golang/init.lua
index 9b51eef4..9cd71379 100644
--- a/lua/neotest-golang/init.lua
+++ b/lua/neotest-golang/init.lua
@@ -5,7 +5,7 @@ local logger = require("neotest-golang.logging")
 local options = require("neotest-golang.options")
 local query = require("neotest-golang.query")
 local runspec = require("neotest-golang.runspec")
-local process = require("neotest-golang.process")
+local lib = require("neotest-golang.lib")
 
 local M = {}
 
@@ -135,34 +135,8 @@ end
 --- @param tree neotest.Tree
 --- @return table<string, neotest.Result> | nil
 function M.Adapter.results(spec, result, tree)
-  local pos = tree:data()
-
-  if pos.type == "dir" then
-    -- A test command executed a directory of tests and the output/status must
-    -- now be processed.
-    local results = process.test_results(spec, result, tree)
-    return results
-  elseif pos.type == "file" then
-    -- A test command executed a file of tests and the output/status must
-    -- now be processed.
-    local results = process.test_results(spec, result, tree)
-    return results
-  elseif pos.type == "namespace" then
-    -- A test command executed a namespace and the output/status must now be
-    -- processed.
-    local results = process.test_results(spec, result, tree)
-    return results
-  elseif pos.type == "test" then
-    -- A test command executed a single test and the output/status must now be
-    -- processed.
-    local results = process.test_results(spec, result, tree)
-    return results
-  end
-
-  logger.error(
-    "Cannot process test results due to unknown Neotest position type:"
-      .. pos.type
-  )
+  local runner = lib.cmd.runner_fallback(options.get().runner)
+  return options.get().runners[runner].output_processor(spec, result, tree)
 end
 
 --- Adapter options.
diff --git a/lua/neotest-golang/options.lua b/lua/neotest-golang/options.lua
index 6f9010dc..f8f587d0 100644
--- a/lua/neotest-golang/options.lua
+++ b/lua/neotest-golang/options.lua
@@ -53,6 +53,35 @@ local default_runners = {
         cmd = vim.list_extend(vim.deepcopy(cmd), required_go_test_args)
         return cmd, nil
       end,
+      output_processor = function(spec, result, tree)
+        local process = require("neotest-golang.process")
+        local pos = tree:data()
+        if pos.type == "dir" then
+          -- A test command executed a directory of tests and the output/status must
+          -- now be processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        elseif pos.type == "file" then
+          -- A test command executed a file of tests and the output/status must
+          -- now be processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        elseif pos.type == "namespace" then
+          -- A test command executed a namespace and the output/status must now be
+          -- processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        elseif pos.type == "test" then
+          -- A test command executed a single test and the output/status must now be
+          -- processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        end
+        logger.error(
+          "Cannot process test results due to unknown Neotest position type:"
+            .. pos.type
+        )
+      end,
     },
     gotestsum = {
       cmd = function(cmd_data)
@@ -91,6 +120,35 @@ local default_runners = {
         cmd = vim.list_extend(vim.deepcopy(cmd), required_go_test_args)
         return cmd, json_filepath
       end,
+      output_processor = function(spec, result, tree)
+        local process = require("neotest-golang.process")
+        local pos = tree:data()
+        if pos.type == "dir" then
+          -- A test command executed a directory of tests and the output/status must
+          -- now be processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        elseif pos.type == "file" then
+          -- A test command executed a file of tests and the output/status must
+          -- now be processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        elseif pos.type == "namespace" then
+          -- A test command executed a namespace and the output/status must now be
+          -- processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        elseif pos.type == "test" then
+          -- A test command executed a single test and the output/status must now be
+          -- processed.
+          local results = process.test_results(spec, result, tree)
+          return results
+        end
+        logger.error(
+          "Cannot process test results due to unknown Neotest position type:"
+            .. pos.type
+        )
+      end,
     },
   },
 }