fix: regexp character escaping

lua/neotest-golang/convert.lua

@@ -6,12 +6,18 @@ local M = {}
 ---@return string
 function M.to_gotest_regex_pattern(test_name)
   local special_characters = {
+    "^",
+    "$",
     "(",
     ")",
     "[",
     "]",
     "{",
     "}",
+    "|",
+    "?",
+    "+",
+    "*",
   }
   for _, character in ipairs(special_characters) do
     test_name = test_name:gsub("%" .. character, "\\" .. character)
@@ -38,7 +44,7 @@ function M.to_gotest_test_name(pos_id)
   return test_name
 end
 
---- Escape characters, for usage of string as pattern in Lua..
+--- Escape characters, for usage of string as pattern in Lua.
 --- - `.` (matches any character)
 --- - `%` (used to escape special characters)
 --- - `+` (matches 1 or more of the previous character or class)

tests/go/testname_spec.lua

@@ -1,6 +1,7 @@
 local nio = require("nio")
 local adapter = require("neotest-golang")
 local convert = require("neotest-golang.convert")
+local _ = require("plenary")
 
 describe("Neotest position to Go test name", function()
   -- Arrange
@@ -62,6 +63,25 @@ describe("Neotest position to Go test name", function()
       vim.inspect(actual_go_test_name)
     )
   end)
+
+  it("supports regexp characters", function()
+    local expected_subtest_name =
+      '"Regexp characters like ( ) [ ] - | ? + * ^ $ are ok"'
+    local expected_gotest_name =
+      "TestNames/Regexp_characters_like_(_)_[_]_-_|_?_+_*_^_$_are_ok"
+
+    -- Act
+    local pos = tree:node(8):data()
+    local actual_go_test_name = convert.to_gotest_test_name(pos.id)
+
+    -- Assert
+    local actual_name = pos.name
+    assert.are.same(expected_subtest_name, actual_name)
+    assert.are.same(
+      vim.inspect(expected_gotest_name),
+      vim.inspect(actual_go_test_name)
+    )
+  end)
 end)
 
 describe("Full Go test name conversion", function()

tests/go/testname_test.go

@@ -33,4 +33,10 @@ func TestNames(t *testing.T) {
 			t.Fail()
 		}
 	})
+
+	t.Run("Regexp characters like ( ) [ ] - | ? + * ^ $ are ok", func(t *testing.T) {
+		if Add(1, 2) != 3 {
+			t.Fail()
+		}
+	})
 }