chore(ci): it should stop ci from running the same action twice

add basic test to check ci

chore(ci): hopefully adds cache for tests

spec/testutils.lua

@@ -0,0 +1,18 @@
+-- NOTE: there's a probably a better way to do this
+local fixtures_dir = (vim.fn.expand "%:p:h") .. "/spec/fixtures/"
+
+---@class gopher.TestUtils
+local testutils = {}
+
+---@generic T
+---@param a T
+---@param b T
+---@return boolean
+function testutils.eq(a, b)
+  return MiniTest.expect.equality(a, b)
+end
+
+-- TODO: continue with writing fixtures helpers
+-- https://github.com/olexsmir/gopher.nvim/pull/71/files
+
+return testutils