feat(plugins): add support for packer snapshots (#2351)

2 files changed, 35 insertions, 3 deletions

diff --git a/tests/specs/lsp_spec.lua b/tests/specs/lsp_spec.lua
index 388a24bb..9031d98f 100644
--- a/tests/specs/lsp_spec.lua
+++ b/tests/specs/lsp_spec.lua
@@ -1,6 +1,6 @@
 local a = require "plenary.async_lib.tests"
 local utils = require "lvim.utils"
-local helpers = require "tests.helpers"
+local helpers = require "tests.lvim.helpers"
 local temp_dir = vim.loop.os_getenv "TEMP" or "/tmp"
 lvim.lsp.templates_dir = join_paths(temp_dir, "lvim", "tests", "artifacts")
 
diff --git a/tests/specs/plugins_load_spec.lua b/tests/specs/plugins_load_spec.lua
index 08c96c12..e5f1a09e 100644
--- a/tests/specs/plugins_load_spec.lua
+++ b/tests/specs/plugins_load_spec.lua
@@ -5,7 +5,7 @@ a.describe("plugin-loader", function()
   local loader = require "lvim.plugin-loader"
 
   a.it("should be able to load default packages without errors", function()
-    loader:load { plugins, lvim.plugins }
+    loader.load { plugins, lvim.plugins }
 
     -- TODO: maybe there's a way to avoid hard-coding the names of the modules?
     local startup_plugins = {
@@ -18,7 +18,7 @@ a.describe("plugin-loader", function()
   end)
 
   a.it("should be able to load lsp packages without errors", function()
-    loader:load { plugins, lvim.plugins }
+    loader.load { plugins, lvim.plugins }
 
     require("lvim.lsp").setup()
 
@@ -32,4 +32,36 @@ a.describe("plugin-loader", function()
       assert.truthy(package.loaded[plugin])
     end
   end)
+  a.it("should be able to rollback plugins without errors", function()
+    local plugin = { name = "onedarker.nvim" }
+    plugin.path = vim.tbl_filter(function(package)
+      return package:match(plugin.name)
+    end, vim.api.nvim_list_runtime_paths())[1]
+
+    local get_current_sha = function(repo)
+      local res = vim.fn.system(string.format("git -C %s log -1 --pretty=%%h", repo)):gsub("\n", "")
+      return res
+    end
+    plugin.test_sha = "316b1c9"
+    _G.locked_sha = get_current_sha(plugin.path)
+    loader.load { plugins, lvim.plugins }
+
+    os.execute(string.format("git -C %s fetch --deepen 999 --quiet", plugin.path))
+    os.execute(string.format("git -C %s checkout %s --quiet", plugin.path, plugin.test_sha))
+    assert.equal(plugin.test_sha, get_current_sha(plugin.path))
+    _G.completed = false
+    _G.verify_sha = function()
+      if _G.locked_sha ~= get_current_sha(plugin.path) then
+        error "unmached results!"
+      else
+        _G.completed = true
+      end
+    end
+    vim.cmd [[autocmd User PackerComplete lua _G.verify_sha()]]
+    loader.sync_core_plugins()
+    local ret = vim.wait(30 * 10 * 1000, function()
+      return _G.completed == true
+    end, 200)
+    assert.True(ret)
+  end)
 end)