test: add setup test for CopilotChat module (#1336)

* test: add setup test for CopilotChat module

Added a test to verify that CopilotChat can be set up without errors and
that the chat module is initialized. Also updated .luarc.json to include
additional globals used in tests.

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---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: deathbeam

.luarc.json

@@ -3,8 +3,12 @@
   "diagnostics.globals": [
     "describe",
     "it",
+    "pending",
     "before_each",
-    "after_each"
+    "after_each",
+    "clear",
+    "assert",
+    "print"
   ],
   "diagnostics.disable": ["redefined-local"]
 }

tests/init_spec.lua

@@ -4,4 +4,10 @@ describe('CopilotChat module', function()
       require('CopilotChat')
     end)
   end)
+  it('should be able to set up', function()
+    assert.has_no.errors(function()
+      require('CopilotChat').setup({})
+    end)
+    assert.is_not_nil(require('CopilotChat').chat)
+  end)
 end)