Add guards against resolving empty qualified_name node

lua/neotest-java/command/junit_command_builder.lua

@@ -15,10 +15,13 @@ local CommandBuilder = {
 		return setmetatable({}, self)
 	end,
 
-	---@param qualified_name string example: com.example.ExampleTest
+	---@param qualified_name string | nil example: com.example.ExampleTest
 	---@param node_name? string example: shouldNotFail
 	---@return CommandBuilder
 	test_reference = function(self, qualified_name, node_name, type)
+        if not qualified_name or #qualified_name == 0 then
+            return self
+        end
 		self._test_references = self._test_references or {}
 
 		if type == "dir" then

lua/neotest-java/core/result_builder.lua

@@ -125,7 +125,11 @@ function ResultBuilder.build_results(spec, result, tree) -- luacheck: ignore 212
 			goto continue
 		end
 
-		local unique_key = build_unique_key(resolve_qualified_name(node.path), node.name)
+        local qualified_name = resolve_qualified_name(node.path)
+        if not qualified_name or #qualified_name == 0 then
+            goto continue
+        end
+		local unique_key = build_unique_key(qualified_name, node.name)
 
 		if is_parameterized then
 			local jtestcases = extract_parameterized_tests(testcases, unique_key)

lua/neotest-java/core/spec_builder.lua

@@ -7,7 +7,7 @@ local compile = require("neotest-java.command.compile")
 local find_module_by_filepath = require("neotest-java.util.find_module_by_filepath")
 local logger = require("neotest-java.logger")
 local random_port = require("neotest-java.util.random_port")
-local resolve_qualfied_name = require("neotest-java.util.resolve_qualified_name")
+local resolve_qualified_name = require("neotest-java.util.resolve_qualified_name")
 
 local path = require("plenary.path")
 local lib = require("neotest.lib")
@@ -60,20 +60,20 @@ function SpecBuilder.build_spec(args, project_type, config)
 	if position.type == "dir" then
 		for _, child in tree:iter() do
 			if child.type == "file" then
-				command:test_reference(resolve_qualfied_name(child.path), child.name, "file")
+				command:test_reference(resolve_qualified_name(child.path), child.name, "file")
 			end
 		end
 	elseif position.type == "namespace" then
 		for _, child in tree:iter() do
 			if child.type == "test" then
-				command:test_reference(resolve_qualfied_name(child.path), child.name, "test")
+				command:test_reference(resolve_qualified_name(child.path), child.name, "test")
 			end
 		end
 	elseif position.type == "file" then
-		command:test_reference(resolve_qualfied_name(absolute_path), position.name, "file")
+		command:test_reference(resolve_qualified_name(absolute_path), position.name, "file")
 	elseif position.type == "test" then
 		-- note: parameterized tests are not being discovered by the junit standalone, so we run tests per file
-		command:test_reference(resolve_qualfied_name(absolute_path), position.name, "file")
+		command:test_reference(resolve_qualified_name(absolute_path), position.name, "file")
 	end
 
 	-- COMPILATION STEP

lua/neotest-java/util/resolve_qualified_name.lua

@@ -1,6 +1,7 @@
 local read_file = require("neotest-java.util.read_file")
 local TEST_CLASS_PATTERNS = require("neotest-java.types.test_class_patterns")
 
+---@return string | nil
 local function resolve_qualified_name(filename)
 	---@param raw_query string
 	---@param content string
@@ -44,7 +45,7 @@ local function resolve_qualified_name(filename)
 
 	-- as there can be different class names
 	-- searches for the one the mathces the test class patterns
-	local name = ""
+	local name = nil
 	for _, _name in ipairs(names) do
 		for _, pattern in ipairs(TEST_CLASS_PATTERNS) do
 			if _name:find(pattern) then
@@ -54,7 +55,7 @@ local function resolve_qualified_name(filename)
 		end
 	end
 
-	return package_line .. "." .. name
+	return name and (package_line .. "." .. name) or nil
 end
 
 return resolve_qualified_name