diff --git a/.gitignore b/.gitignore
index e69de29..4ba7a24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1 @@
+tests/.deps
diff --git a/Makefile b/Makefile
index 19494a6..ef7ccc6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,8 @@
+clean:
+	nvim --headless --clean -n -c "lua vim.fn.delete('./tests/.deps', 'rf')" +q
 test:
-	nvim --headless --noplugin -u tests/minimal.vim -c "PlenaryBustedDirectory tests/ {minimal_init = 'tests/minimal.vim'}"
+	nvim --headless --clean -u tests/test.lua "$(FILE)"
+lint:
+	stylua --check lua/ tests/
+format:
+	stylua lua/ tests/
diff --git a/lua/nvim-ts-autotag.lua b/lua/nvim-ts-autotag.lua
index 51cf99f..b572e1d 100644
--- a/lua/nvim-ts-autotag.lua
+++ b/lua/nvim-ts-autotag.lua
@@ -16,6 +16,8 @@ function M.init()
   end
 end
 
+function M.ensure_ts_parsers_installed() end
+
 function M.setup(opts)
     internal.setup(opts)
     vim.cmd([[augroup nvim_ts_xmltag]])
diff --git a/tests/.luarc.json b/tests/.luarc.json
new file mode 100644
index 0000000..e18ab58
--- /dev/null
+++ b/tests/.luarc.json
@@ -0,0 +1,6 @@
+{
+    "diagnostics.globals": [
+        "it",
+        "describe"
+    ]
+}
\ No newline at end of file
diff --git a/tests/minimal_init.lua b/tests/minimal_init.lua
new file mode 100644
index 0000000..25f7522
--- /dev/null
+++ b/tests/minimal_init.lua
@@ -0,0 +1,111 @@
+local M = {}
+
+local utils = require("tests.utils.utils")
+local root = utils.paths.Root:push(".deps/")
+
+---@class MinPlugin A plugin to download and register on the package path
+---@alias PluginName string The plugin name, will be used as part of the git clone destination
+---@alias PluginCloneInfo string | string[] The git url a plugin located at or a table of arguments to be passed to `git clone`
+---@alias MinPlugins table<PluginName, PluginCloneInfo>
+
+---Downloads a plugin from a given url and registers it on the 'runtimepath'
+---@param plugin_name PluginName
+---@param plugin_clone_args PluginCloneInfo
+function M.load_plugin(plugin_name, plugin_clone_args)
+    local package_root = root:push("plugins/")
+    local install_destination = package_root:push(plugin_name):get()
+
+    vim.opt.runtimepath:append(install_destination)
+
+    if not vim.loop.fs_stat(package_root:get()) then
+        vim.fn.mkdir(package_root:get(), "p")
+    end
+
+    -- If the plugin install path already exists, we don't need to clone it again.
+    if not vim.loop.fs_stat(install_destination) then
+        print(string.format("[LOAD PLUGIN] Downloading plugin '%s' to '%s'", plugin_name, install_destination))
+        if type(plugin_clone_args) == "table" then
+            plugin_clone_args = table.concat(plugin_clone_args, " ")
+        end
+        vim.fn.system({
+            "git",
+            "clone",
+            "--depth=1",
+            plugin_clone_args,
+            install_destination,
+        })
+        if vim.v.shell_error > 0 then
+            error(
+                string.format("[LOAD PLUGIN] Failed to clone plugin: '%s' to '%s'!", plugin_name, install_destination),
+                vim.log.levels.ERROR
+            )
+        end
+    end
+    print(("[LOAD PLUGIN] Loaded plugin '%s'"):format(plugin_name))
+end
+
+---Do the initial setup. Downloads plugins, ensures the minimal init does not pollute the filesystem by keeping
+---everything self contained to the CWD of the minimal init file. Run prior to running tests, reproducing issues, etc.
+---@param plugins? MinPlugins
+function M.setup(plugins)
+    print("[SETUP] Setting up minimal init")
+
+    -- Instead of disabling swap and a bunch of other stuff, we override default xdg locations for
+    -- Neovim so our test client is as close to a normal client in terms of options as possible
+    local xdg_root = root:push("xdg")
+    local std_paths = {
+        "cache",
+        "data",
+        "config",
+        "state",
+    }
+    for _, std_path in pairs(std_paths) do
+        local xdg_str = "XDG_" .. std_path:upper() .. "_HOME"
+        local xdg_path = xdg_root:push(std_path):get()
+        print(("[SETUP] Set vim.env.%-3s -> %s"):format(xdg_str, xdg_path))
+        vim.env[xdg_str] = xdg_path
+        ---@diagnostic disable-next-line: param-type-mismatch
+        vim.fn.mkdir(vim.fn.stdpath(std_path), "p")
+    end
+
+    -- Ignore cleanups if specified in the environment
+    -- NOTE: Cleanup the xdg cache on exit so new runs of the minimal init doesn't share any previous state, e.g. shada
+    vim.api.nvim_create_autocmd("VimLeave", {
+        callback = function()
+            if vim.env.TEST_NO_CLEANUP and vim.env.TEST_NO_CLEANUP:lower() == "true" then
+                print("[CLEANUP]: `TEST_NO_CLEANUP` was specified, not removing: " .. xdg_root)
+            else
+                print("[CLEANUP]: `TEST_NO_CLEANUP` not specified, removing " .. xdg_root)
+                vim.fn.delete(xdg_root:get(), "rf")
+            end
+        end,
+    })
+
+    -- Empty the package path so we use only the plugins specified
+    vim.opt.packpath = {}
+
+    -- Install required plugins
+    if plugins ~= nil then
+        for plugin_name, plugin_clone_args in pairs(plugins) do
+            M.load_plugin(plugin_name, plugin_clone_args)
+        end
+    end
+
+    -- Ensure `nvim-ts-autotag` is registed on the runtimepath and set it up
+    utils.rtp_register_ts_autotag()
+    require("nvim-ts-autotag").setup({
+        enable = true,
+        enable_rename = true,
+        enable_close = true,
+        enable_close_on_slash = true,
+    })
+    print("[SETUP] Finished setting up minimal init")
+end
+
+M.setup({
+    ["plenary.nvim"] = "https://github.com/nvim-lua/plenary.nvim",
+    ["popup.nvim"] = "https://github.com/nvim-lua/popup.nvim",
+    ["nvim-treesitter"] = "https://github.com/nvim-treesitter/nvim-treesitter",
+    ["playground"] = "https://github.com/nvim-treesitter/playground",
+    ["nvim-treesitter-rescript"] = "https://github.com/nkrkv/nvim-treesitter-rescript",
+})
diff --git a/tests/close_slash_tag_spec.lua b/tests/specs/close_slash_tag_spec.lua
similarity index 96%
rename from tests/close_slash_tag_spec.lua
rename to tests/specs/close_slash_tag_spec.lua
index a81c108..9fa6b66 100644
--- a/tests/close_slash_tag_spec.lua
+++ b/tests/specs/close_slash_tag_spec.lua
@@ -1,6 +1,6 @@
-local ts = require("nvim-treesitter.configs")
-ts.setup({
-    ensure_installed = _G.ts_filetypes,
+local helpers = require("tests.utils.helpers")
+
+helpers.setup_nvim_treesitter({
     highlight = { enable = true },
 })
 
@@ -171,10 +171,10 @@ local data = {
 
 local autotag = require("nvim-ts-autotag")
 autotag.test = true
-local run_data = _G.Test_filter(data)
+local run_data = helpers.Test_filter(data)
 
 describe("[close slash tag]", function()
-    _G.Test_withfile(run_data, {
+    helpers.Test_withfile(run_data, {
         mode = "i",
         cursor_add = 0,
     })
diff --git a/tests/closetag_spec.lua b/tests/specs/closetag_spec.lua
similarity index 96%
rename from tests/closetag_spec.lua
rename to tests/specs/closetag_spec.lua
index 90796e5..3212d45 100644
--- a/tests/closetag_spec.lua
+++ b/tests/specs/closetag_spec.lua
@@ -1,6 +1,6 @@
-local ts = require("nvim-treesitter.configs")
-ts.setup({
-    ensure_installed = _G.ts_filetypes,
+local helpers = require("tests.utils.helpers")
+
+helpers.setup_nvim_treesitter({
     highlight = { enable = true },
 })
 
@@ -209,12 +209,12 @@ local data = {
 
 local autotag = require("nvim-ts-autotag")
 autotag.test = true
-local run_data = _G.Test_filter(data)
+local run_data = helpers.Test_filter(data)
 
 describe("[close tag]", function()
-    _G.Test_withfile(run_data, {
+    helpers.Test_withfile(run_data, {
         mode = "i",
         cursor_add = 0,
-        before_each = function(value) end,
+        before_each = function() end,
     })
 end)
diff --git a/tests/renametag_spec.lua b/tests/specs/renametag_spec.lua
similarity index 97%
rename from tests/renametag_spec.lua
rename to tests/specs/renametag_spec.lua
index 539cbf6..fc06da5 100644
--- a/tests/renametag_spec.lua
+++ b/tests/specs/renametag_spec.lua
@@ -1,6 +1,6 @@
-local ts = require("nvim-treesitter.configs")
-ts.setup({
-    ensure_installed = _G.ts_filetypes,
+local helpers = require("tests.utils.helpers")
+helpers.setup_nvim_treesitter({
+
     highlight = {
         use_languagetree = false,
         enable = true,
@@ -315,11 +315,11 @@ local data = {
 local autotag = require("nvim-ts-autotag")
 autotag.test = true
 
-local run_data = _G.Test_filter(data)
+local run_data = helpers.Test_filter(data)
 
 describe("[rename tag]", function()
-    _G.Test_withfile(run_data, {
+    helpers.Test_withfile(run_data, {
         cursor_add = 0,
-        before_each = function(value) end,
+        before_each = function() end,
     })
 end)
diff --git a/tests/test.lua b/tests/test.lua
new file mode 100644
index 0000000..f7aebcf
--- /dev/null
+++ b/tests/test.lua
@@ -0,0 +1,13 @@
+require("tests.minimal_init")
+
+---@type string
+local test_file = vim.v.argv[#vim.v.argv]
+if test_file == "" or not test_file:find("tests/specs/", nil, true) then
+    test_file = "tests/specs"
+end
+print("[STARTUP] Running all tests in " .. test_file)
+
+require("plenary.test_harness").test_directory(test_file, {
+    minimal_init = "tests/minimal_init.lua",
+    sequential = true,
+})
diff --git a/tests/test-utils.lua b/tests/utils/helpers.lua
similarity index 72%
rename from tests/test-utils.lua
rename to tests/utils/helpers.lua
index 11fd88b..4fab3a6 100644
--- a/tests/test-utils.lua
+++ b/tests/utils/helpers.lua
@@ -1,6 +1,13 @@
+local test_utils = require("tests.utils.utils")
+
+-- Some helpers depend on utilities from the main plugin, so we have to register the plugin on the
+-- path if it isn't already present
+test_utils.rtp_register_ts_autotag()
+
 local utils = require("nvim-ts-autotag.utils")
 local log = require("nvim-ts-autotag._log")
-local api = vim.api
+
+local M = {}
 
 local helpers = {}
 
@@ -16,21 +23,36 @@ function helpers.insert(text, is_replace)
     helpers.feed("i" .. text, "x", is_replace)
 end
 
-utils.insert_char = function(text)
-    api.nvim_put({ text }, "c", true, true)
+M.insert_char = function(text)
+    vim.api.nvim_put({ text }, "c", true, true)
 end
 
-utils.feed = function(text, num)
+M.feed = function(text, num)
     local result = ""
     for _ = 1, num, 1 do
         result = result .. text
     end
-    api.nvim_feedkeys(api.nvim_replace_termcodes(result, true, false, true), "x", true)
+    vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(result, true, false, true), "x", true)
 end
 
-_G.eq = assert.are.same
+M.setup_nvim_treesitter = function(opts)
+    opts = vim.tbl_deep_extend("keep", opts or {}, {
+        ensure_installed = {
+            "html",
+            "javascript",
+            "typescript",
+            "svelte",
+            "vue",
+            "tsx",
+            "php",
+            "glimmer",
+            "rescript",
+            "embedded_template",
+        },
+    })
+end
 
-_G.Test_filter = function(data)
+M.Test_filter = function(data)
     local run_data = {}
     for _, value in pairs(data) do
         if value.only == true then
@@ -50,34 +72,34 @@ local compare_text = function(linenr, text_after, name, cursor_add, end_cursor)
     for i = 1, #text_after, 1 do
         local t = string.gsub(text_after[i], "%|", "")
         if t and new_text[i] and t:gsub("%s+$", "") ~= new_text[i]:gsub("%s+$", "") then
-            eq(t, new_text[i], "\n\n text error: " .. name .. "\n")
+            assert.are.same(t, new_text[i], "\n\n text error: " .. name .. "\n")
         end
         local p_after = string.find(text_after[i], "%|")
         if p_after then
             local row, col = utils.get_cursor()
             if end_cursor then
-                eq(row, linenr + i - 2, "\n\n cursor row error: " .. name .. "\n")
-                eq(col + 1, end_cursor, "\n\n end cursor column error : " .. name .. "\n")
+                assert.are.same(row, linenr + i - 2, "\n\n cursor row error: " .. name .. "\n")
+                assert.are.same(col + 1, end_cursor, "\n\n end cursor column error : " .. name .. "\n")
             else
-                eq(row, linenr + i - 2, "\n\n cursor row error: " .. name .. "\n")
+                assert.are.same(row, linenr + i - 2, "\n\n cursor row error: " .. name .. "\n")
                 p_after = p_after + cursor_add
-                eq(col, math.max(p_after - 2, 0), "\n\n cursor column error : " .. name .. "\n")
+                assert.are.same(col, math.max(p_after - 2, 0), "\n\n cursor column error : " .. name .. "\n")
             end
         end
     end
     return true
 end
 
-_G.Test_withfile = function(test_data, cb)
+M.Test_withfile = function(test_data, cb)
     for _, value in pairs(test_data) do
-        it("test " .. value.name, function(done)
+        it("test " .. value.name, function()
             local text_before = {}
             value.linenr = value.linenr or 1
             local pos_before = {
                 linenr = value.linenr,
                 colnr = 0,
             }
-            if not vim.tbl_islist(value.before) then
+            if not vim.islist(value.before) then
                 value.before = { value.before }
             end
             for index, text in pairs(value.before) do
@@ -90,7 +112,7 @@ _G.Test_withfile = function(test_data, cb)
                     end
                 end
             end
-            if not vim.tbl_islist(value.after) then
+            if not vim.islist(value.after) then
                 value.after = { value.after }
             end
             vim.bo.filetype = value.filetype or "text"
@@ -137,14 +159,14 @@ _G.Test_withfile = function(test_data, cb)
     end
 end
 
-_G.dump_node = function(node)
+M.dump_node = function(node)
     local text = utils.get_node_text(node)
     for _, txt in pairs(text) do
         log.debug(txt)
     end
 end
 
-_G.dump_node_text = function(target)
+M.dump_node_text = function(target)
     for node in target:iter_children() do
         local node_type = node:type()
         local text = utils.get_node_text(node)
@@ -152,3 +174,4 @@ _G.dump_node_text = function(target)
         log.debug(text)
     end
 end
+return M
diff --git a/tests/utils/paths.lua b/tests/utils/paths.lua
new file mode 100644
index 0000000..25d942a
--- /dev/null
+++ b/tests/utils/paths.lua
@@ -0,0 +1,77 @@
+local M = {}
+
+---Search up from the current file until we find the full path of the base `tests/` directory and
+---return it
+---@param test_file string Filename to look for in each directory, if it exists then stop the search
+---@return fun(): string dir A function wrapping the found directory
+local function search_dir_up(test_file)
+    -- This is the path of the directory of the current file
+    local cur_dir = vim.fn.fnamemodify(debug.getinfo(1, "S").source:sub(2), ":p")
+    ---@diagnostic disable-next-line: param-type-mismatch
+    while not vim.uv.fs_stat(cur_dir .. "/" .. test_file, nil) and cur_dir ~= "/" do
+        cur_dir = vim.fn.fnamemodify(cur_dir, ":h")
+    end
+    if cur_dir == "/" then
+        error("Failed to locate the base 'tests/' directory!")
+    end
+    -- We return a wrapping function instead of a bare string so its easier to enforce "readonly"
+    -- uses of the searched directory
+    return function()
+        return cur_dir
+    end
+end
+
+--- WARN: DO NOT MUTATE THESE VALUES!
+---
+--- Table containing useful paths to directories within the plugin
+M.static = {
+    --- Full path of the `tests/` directory
+    tests_dir = search_dir_up("test.lua"),
+    --- Full base path of the plugin where the `.git` directory resides
+    ts_autotag_dir = search_dir_up(".git"),
+}
+
+---@class nvim-ts-autotag.Root
+---@field package path string
+local Root = {
+    path = M.static.tests_dir(),
+}
+
+---@package
+---@nodiscard
+---@return nvim-ts-autotag.Root
+function Root:new(o)
+    o = o or {}
+
+    setmetatable(o, self)
+    -- The last part of the path must be a "/" to work correctly
+    if self.path:sub(#self.path, #self.path) ~= "/" then
+        self.path = self.path .. "/"
+    end
+    self.__index = self
+    return o
+end
+
+--- Create a new instance, pushing the given path onto it
+---@nodiscard
+---@param path string The new path to add
+---@return nvim-ts-autotag.Root
+function Root:push(path)
+    local new_root = self:new()
+    -- Since we're extending the path, the current path must be a directory, ensure it ends in a "/"
+    if new_root.path:sub(#new_root.path) ~= "/" then
+        new_root.path = new_root.path .. "/"
+    end
+    new_root.path = new_root.path .. path
+    return new_root
+end
+
+--- Get the current path string
+---@return string path
+function Root:get()
+    return self.path
+end
+
+M.Root = Root:new()
+
+return M
diff --git a/tests/utils/utils.lua b/tests/utils/utils.lua
new file mode 100644
index 0000000..dc9b322
--- /dev/null
+++ b/tests/utils/utils.lua
@@ -0,0 +1,14 @@
+local path_utils = require("tests.utils.paths")
+local M = {}
+
+M.paths = path_utils
+
+--- Register the main plugin (`nvim-ts-autotag`) on the runtimepath if it hasn't already been
+--- registered
+M.rtp_register_ts_autotag = function()
+    if not vim.list_contains(vim.opt.runtimepath, path_utils.static.ts_autotag_dir()) then
+        vim.opt.runtimepath:append(path_utils.static.ts_autotag_dir())
+    end
+end
+
+return M