diff --git a/lua/neotest-golang/cmd.lua b/lua/neotest-golang/cmd.lua
index 42cc38a8..6b368006 100644
--- a/lua/neotest-golang/cmd.lua
+++ b/lua/neotest-golang/cmd.lua
@@ -2,7 +2,6 @@
 
 local async = require("neotest.async")
 
-local convert = require("neotest-golang.convert")
 local options = require("neotest-golang.options")
 local json = require("neotest-golang.json")
 
@@ -21,51 +20,36 @@ function M.golist_data(cwd)
   return json.process_golist_output(output)
 end
 
-function M.gotest_list_data(go_mod_folderpath, module_name)
-  local cmd = { "go", "test", "-v", "-json", "-list", "^Test", module_name }
-  local output = vim.fn.system(
-    "cd " .. go_mod_folderpath .. " && " .. table.concat(cmd, " ")
-  )
-
-  -- FIXME: weird... would've expected to call process_gotest_output
-  local json_output = json.process_golist_output(output)
-
-  --- @type string[]
-  local test_names = {}
-  for _, v in ipairs(json_output) do
-    if v.Action == "output" then
-      --- @type string
-      local test_name = string.gsub(v.Output, "\n", "")
-      if string.match(test_name, "^Test") then
-        test_names = vim.list_extend(
-          test_names,
-          { convert.to_gotest_regex_pattern(test_name) }
-        )
-      end
-    end
+function M.sed_regexp(filepath)
+  if M.system_has("sed") == false then
+    return nil
   end
-
-  return test_names
+  local sed_command =
+    string.format("sed -n '/func Test/p' %s", vim.fn.shellescape(filepath))
+  local handle = io.popen(sed_command)
+  local result = nil
+  if handle ~= nil then
+    result = handle:read("*a")
+    handle:close()
+  end
+  local lines = {}
+  for line in string.gmatch(result, "([^\n]*)\n") do
+    line = string.gsub(line, "func ", "")
+    line = string.gsub(line, "%(.*", "")
+    table.insert(lines, line)
+  end
+  local regexp = "^(" .. table.concat(lines, "|") .. ")$"
+  return regexp
 end
 
-function M.test_command_for_dir(module_name)
-  local go_test_required_args = { module_name }
+function M.test_command_in_package(package_or_path)
+  local go_test_required_args = { package_or_path }
   local cmd, json_filepath = M.test_command(go_test_required_args)
   return cmd, json_filepath
 end
 
-function M.test_command_for_file(module_name, test_names_regexp)
-  local go_test_required_args = { "-run", test_names_regexp, module_name }
-  local cmd, json_filepath = M.test_command(go_test_required_args)
-
-  return cmd, json_filepath
-end
-
-function M.test_command_for_individual_test(
-  test_folder_absolute_path,
-  test_name
-)
-  local go_test_required_args = { test_folder_absolute_path, "-run", test_name }
+function M.test_command_in_package_with_regexp(package_or_path, regexp)
+  local go_test_required_args = { package_or_path, "-run", regexp }
   local cmd, json_filepath = M.test_command(go_test_required_args)
   return cmd, json_filepath
 end
@@ -73,7 +57,7 @@ end
 function M.test_command(go_test_required_args)
   --- The runner to use for running tests.
   --- @type string
-  local runner = M.fallback_to_go_test(options.get().runner)
+  local runner = M.runner_fallback(options.get().runner)
 
   --- The filepath to write test output JSON to, if using `gotestsum`.
   --- @type string | nil
@@ -109,16 +93,20 @@ function M.gotestsum(go_test_required_args, json_filepath)
   return cmd
 end
 
-function M.fallback_to_go_test(executable)
-  if vim.fn.executable(executable) == 0 then
-    vim.notify(
-      "Runner " .. executable .. " not found. Falling back to 'go'.",
-      vim.log.levels.WARN
-    )
+function M.runner_fallback(executable)
+  if M.system_has(executable) == false then
     options.set({ runner = "go" })
     return options.get().runner
   end
   return options.get().runner
 end
 
+function M.system_has(executable)
+  if vim.fn.executable(executable) == 0 then
+    vim.notify("Executable not found: " .. executable, vim.log.levels.WARN)
+    return false
+  end
+  return true
+end
+
 return M
diff --git a/lua/neotest-golang/init.lua b/lua/neotest-golang/init.lua
index 1b5a6ad0..be641ff3 100644
--- a/lua/neotest-golang/init.lua
+++ b/lua/neotest-golang/init.lua
@@ -69,7 +69,7 @@ function M.Adapter.build_spec(args)
 
   --- The position object, describing the current directory, file or test.
   --- @type neotest.Position
-  local pos = args.tree:data()
+  local pos = args.tree:data() -- NOTE: causes <file> is not accessible by the current user!
 
   if not tree then
     vim.notify(
@@ -100,11 +100,6 @@ function M.Adapter.build_spec(args)
   -- The idea here is not to have such fallbacks take place in the future, but
   -- while this adapter is being developed, it can be useful to have such
   -- functionality.
-  --
-  -- NOTE: Right now the adapter is not yet complete, and cannot
-  -- handle the 'file' position type. The goal is to try to support this,
-  -- as it is not efficient to run all tests in a file individually, when you
-  -- might want to run all tests in the file using one 'go test' command.
 
   if pos.type == "dir" and pos.path == vim.fn.getcwd() then
     -- A runspec is to be created, based on running all tests in the given
@@ -126,7 +121,7 @@ function M.Adapter.build_spec(args)
   end
 
   vim.notify(
-    "Unknown Neotest test position type, "
+    "Unknown Neotest position type, "
       .. "cannot build runspec with position type: "
       .. pos.type,
     vim.log.levels.ERROR
@@ -135,9 +130,6 @@ end
 
 --- Process the test command output and result. Populate test outcome into the
 --- Neotest internal tree structure.
----
---- TODO: implement parsing of 'file' position type results.
----
 --- @async
 --- @param spec neotest.RunSpec
 --- @param result neotest.StrategyResult
diff --git a/lua/neotest-golang/parse.lua b/lua/neotest-golang/parse.lua
index b523053e..2bc0090e 100644
--- a/lua/neotest-golang/parse.lua
+++ b/lua/neotest-golang/parse.lua
@@ -90,9 +90,7 @@ function M.test_results(spec, result, tree)
   --- Test command (e.g. 'go test') status.
   --- @type neotest.ResultStatus
   local test_command_status = "skipped"
-  if context.dummy_test == true then
-    test_command_status = "skipped"
-  elseif result.code == 0 then
+  if result.code == 0 then
     test_command_status = "passed"
   else
     test_command_status = "failed"
@@ -115,11 +113,6 @@ function M.test_results(spec, result, tree)
     output = test_command_output_path,
   }
 
-  -- if the test execution was skipped, return early
-  if context.dummy_test == true then
-    return neotest_result
-  end
-
   --- Internal data structure to store test result data.
   --- @type table<string, TestData>
   local res = M.aggregate_data(tree, gotest_output, golist_output)
diff --git a/lua/neotest-golang/runspec_dir.lua b/lua/neotest-golang/runspec_dir.lua
index 9ae61002..cb099d8c 100644
--- a/lua/neotest-golang/runspec_dir.lua
+++ b/lua/neotest-golang/runspec_dir.lua
@@ -1,5 +1,5 @@
 --- Helpers to build the command and context around running all tests of
---- a Go module.
+--- a Go package.
 
 local cmd = require("neotest-golang.cmd")
 
@@ -24,16 +24,16 @@ function M.build(pos)
   local go_mod_folderpath = vim.fn.fnamemodify(go_mod_filepath, ":h")
   local golist_data = cmd.golist_data(go_mod_folderpath)
 
-  -- find the go module that corresponds to the go_mod_folderpath
-  local module_name = "./..." -- if no go module, run all tests at the $CWD
+  -- find the go package that corresponds to the go_mod_folderpath
+  local package_name = "./..."
   for _, golist_item in ipairs(golist_data) do
     if pos.path == golist_item.Dir then
-      module_name = golist_item.ImportPath
+      package_name = golist_item.ImportPath
       break
     end
   end
 
-  local test_cmd, json_filepath = cmd.test_command_for_dir(module_name)
+  local test_cmd, json_filepath = cmd.test_command_in_package(package_name)
 
   --- @type RunspecContext
   local context = {
@@ -56,7 +56,7 @@ end
 
 function M.fail_fast(pos)
   local msg = "The selected folder must contain a go.mod file "
-    .. "or be a subdirectory of a Go module."
+    .. "or be a subdirectory of a Go package."
   vim.notify(msg, vim.log.levels.ERROR)
 
   --- @type RunspecContext
diff --git a/lua/neotest-golang/runspec_file.lua b/lua/neotest-golang/runspec_file.lua
index 3b4f02c8..3e64159b 100644
--- a/lua/neotest-golang/runspec_file.lua
+++ b/lua/neotest-golang/runspec_file.lua
@@ -11,7 +11,7 @@ local M = {}
 --- @return neotest.RunSpec | neotest.RunSpec[] | nil
 function M.build(pos, tree)
   if vim.tbl_isempty(tree:children()) then
-    M.fail_fast(pos)
+    return M.fail_fast(pos)
   end
 
   local go_mod_filepath = runspec_dir.find_file_upwards("go.mod", pos.path)
@@ -24,13 +24,29 @@ function M.build(pos, tree)
   local go_mod_folderpath = vim.fn.fnamemodify(go_mod_filepath, ":h")
   local golist_data = cmd.golist_data(go_mod_folderpath)
 
-  -- find the go module that corresponds to the go_mod_folderpath
-  local module_name = "./..." -- if no go module, run all tests at the $CWD
+  -- find the go package that corresponds to the pos.path
+  local package_name = "./..."
+  local pos_path_filename = vim.fn.fnamemodify(pos.path, ":t")
+  for _, golist_item in ipairs(golist_data) do
+    if golist_item.TestGoFiles ~= nil then
+      if vim.tbl_contains(golist_item.TestGoFiles, pos_path_filename) then
+        package_name = golist_item.ImportPath
+        break
+      end
+    end
+  end
 
-  local test_names_regexp =
-    M.find_tests_in_file(pos, golist_data, go_mod_folderpath, module_name)
-  local test_cmd, json_filepath =
-    cmd.test_command_for_file(module_name, test_names_regexp)
+  -- use sed to find all top-level tests in pos.path
+  local test_cmd = nil
+  local json_filepath = nil
+  local regexp = cmd.sed_regexp(pos.path)
+  if regexp ~= nil then
+    test_cmd, json_filepath =
+      cmd.test_command_in_package_with_regexp(package_name, regexp)
+  else
+    -- fallback: run all tests in the package
+    test_cmd, json_filepath = cmd.test_command_in_package(package_name)
+  end
 
   --- @type RunspecContext
   local context = {
@@ -57,8 +73,7 @@ function M.fail_fast(pos)
     pos_id = pos.id,
     pos_type = "file",
     golist_data = {}, -- no golist output
-    parse_test_results = true,
-    dummy_test = true,
+    parse_test_results = false,
   }
 
   --- Runspec designed for files that contain no tests.
@@ -70,23 +85,4 @@ function M.fail_fast(pos)
   return run_spec
 end
 
-function M.find_tests_in_file(pos, golist_data, go_mod_folderpath, module_name)
-  local pos_path_filename = vim.fn.fnamemodify(pos.path, ":t")
-
-  for _, golist_item in ipairs(golist_data) do
-    if golist_item.TestGoFiles ~= nil then
-      if vim.tbl_contains(golist_item.TestGoFiles, pos_path_filename) then
-        module_name = golist_item.ImportPath
-        break
-      end
-    end
-  end
-
-  -- FIXME: this grabs all test files from the package. We only want the one in the file.
-  local test_names = cmd.gotest_list_data(go_mod_folderpath, module_name)
-  local test_names_regexp = "^(" .. table.concat(test_names, "|") .. ")$"
-
-  return test_names_regexp
-end
-
 return M
diff --git a/lua/neotest-golang/runspec_test.lua b/lua/neotest-golang/runspec_test.lua
index 2caeeddb..e1bb50c8 100644
--- a/lua/neotest-golang/runspec_test.lua
+++ b/lua/neotest-golang/runspec_test.lua
@@ -20,8 +20,10 @@ function M.build(pos, strategy)
   local test_name = convert.to_gotest_test_name(pos.id)
   test_name = convert.to_gotest_regex_pattern(test_name)
 
-  local test_cmd, json_filepath =
-    cmd.test_command_for_individual_test(test_folder_absolute_path, test_name)
+  local test_cmd, json_filepath = cmd.test_command_in_package_with_regexp(
+    test_folder_absolute_path,
+    test_name
+  )
 
   local runspec_strategy = nil
   if strategy == "dap" then