fix: fix unit tests

Author: jdurand

tests/busted_setup.lua

@@ -53,6 +53,13 @@ _G.expect = function(value)
     to_be_truthy = function()
       assert.is_truthy(value)
     end,
+    to_match = function(pattern)
+      assert.is_string(value)
+      assert.is_true(
+        string.find(value, pattern, 1, true) ~= nil,
+        "Expected string '" .. value .. "' to match pattern '" .. pattern .. "'"
+      )
+    end,
   }
 end
 

tests/unit/config_spec.lua

@@ -301,7 +301,7 @@ describe("Configuration", function()
     end)
 
     expect(success).to_be_false()
-    expect(err).to_match("must be a string or function")
+    expect(tostring(err)).to_match("must be a string or function")
   end)
 
   teardown()