diff --git a/spec/async_integration_spec.lua b/spec/async_integration_spec.lua
index dd4c523..2155ff6 100644
--- a/spec/async_integration_spec.lua
+++ b/spec/async_integration_spec.lua
@@ -75,15 +75,11 @@ describe('async integration', function()
       end,
     }
 
-    local cmd_methods = {
-      e = function() end,
-      only = function() end,
-      startinsert = function() end,
-      stopinsert = function() end,
-    }
-    vim.cmd = setmetatable(function() end, {
-      __index = cmd_methods,
-    })
+    vim.cmd = function() end
+    vim.cmd.e = function() end
+    vim.cmd.only = function() end
+    vim.cmd.startinsert = function() end
+    vim.cmd.stopinsert = function() end
     vim.api.nvim_get_current_buf = function()
       return 1
     end
@@ -183,7 +179,7 @@ describe('async integration', function()
     it('handles language flags correctly', function()
       local language_passed = nil
       local mock_async_setup = {
-        setup_contest_async = function(contest_id, language)
+        setup_contest_async = function(_, language)
           language_passed = language
         end,
       }
diff --git a/spec/async_setup_spec.lua b/spec/async_setup_spec.lua
index f6b9904..984ac20 100644
--- a/spec/async_setup_spec.lua
+++ b/spec/async_setup_spec.lua
@@ -69,15 +69,11 @@ describe('cp.async.setup', function()
       end,
     }
 
-    local cmd_methods = {
-      e = function() end,
-      only = function() end,
-      startinsert = function() end,
-      stopinsert = function() end,
-    }
-    vim.cmd = setmetatable(function() end, {
-      __index = cmd_methods,
-    })
+    vim.cmd = function() end
+    vim.cmd.e = function() end
+    vim.cmd.only = function() end
+    vim.cmd.startinsert = function() end
+    vim.cmd.stopinsert = function() end
     vim.api.nvim_get_current_buf = function()
       return 1
     end
@@ -126,7 +122,7 @@ describe('cp.async.setup', function()
     end)
 
     it('handles metadata scraping failure gracefully', function()
-      mock_scraper.scrape_contest_metadata_async = function(platform, contest_id, callback)
+      mock_scraper.scrape_contest_metadata_async = function(_, _, callback)
         callback({
           success = false,
           error = 'network error',
@@ -210,7 +206,7 @@ describe('cp.async.setup', function()
 
   describe('handle_full_setup_async', function()
     it('validates problem exists in contest', function()
-      mock_scraper.scrape_contest_metadata_async = function(platform, contest_id, callback)
+      mock_scraper.scrape_contest_metadata_async = function(_, _, callback)
         callback({
           success = true,
           problems = { { id = 'a' }, { id = 'b' } },
@@ -230,7 +226,7 @@ describe('cp.async.setup', function()
     end)
 
     it('proceeds with valid problem', function()
-      mock_scraper.scrape_contest_metadata_async = function(platform, contest_id, callback)
+      mock_scraper.scrape_contest_metadata_async = function(_, _, callback)
         callback({
           success = true,
           problems = { { id = 'a' }, { id = 'b' } },
diff --git a/spec/command_parsing_spec.lua b/spec/command_parsing_spec.lua
index f37eb15..d3221ea 100644
--- a/spec/command_parsing_spec.lua
+++ b/spec/command_parsing_spec.lua
@@ -22,6 +22,7 @@ describe('cp command parsing', function()
       set_platform = function()
         return true
       end,
+      navigate_problem = function() end,
     }
     package.loaded['cp.setup'] = mock_setup