feat: make is_test_file function configurable

Author: ryanpholt

README.md

@@ -67,6 +67,7 @@ The adapter comes with the following defaults:
 
 --- @class neotest-cpp.Config
 --- @field executables neotest-cpp.Config.Executable
+--- @field is_test_file fun(file_path: string): boolean
 --- @field log_level vim.log.levels
 M.defaults = {
   executables = {
@@ -129,6 +130,12 @@ M.defaults = {
       end,
     },
   },
+  is_test_file = function(file_path)
+    return vim.endswith(file_path, ".cpp")
+      or vim.endswith(file_path, ".cxx")
+      or vim.endswith(file_path, ".cc")
+      or vim.endswith(file_path, ".c++")
+  end,
   log_level = vim.log.levels.INFO,
 }
 }

lua/neotest-cpp/adapter.lua

@@ -32,10 +32,8 @@ end
 ---@param file_path string
 ---@return boolean
 M.is_test_file = function(file_path)
-  return vim.endswith(file_path, ".cpp")
-    or vim.endswith(file_path, ".cxx")
-    or vim.endswith(file_path, ".cc")
-    or vim.endswith(file_path, ".c++")
+  local config = require("neotest-cpp.config")
+  return config.get().is_test_file(file_path)
 end
 
 ---Given a file path, parse all the tests within it.

lua/neotest-cpp/config.lua

@@ -12,6 +12,7 @@ local M = {}
 
 --- @class neotest-cpp.Config
 --- @field executables neotest-cpp.Config.Executable
+--- @field is_test_file fun(file_path: string): boolean
 --- @field log_level vim.log.levels
 M.defaults = {
   executables = {
@@ -74,6 +75,12 @@ M.defaults = {
       end,
     },
   },
+  is_test_file = function(file_path)
+    return vim.endswith(file_path, ".cpp")
+      or vim.endswith(file_path, ".cxx")
+      or vim.endswith(file_path, ".cc")
+      or vim.endswith(file_path, ".c++")
+  end,
   log_level = vim.log.levels.INFO,
 }
 

tests/unit/test_is_test_file.lua

@@ -36,4 +36,18 @@ T["should return false for non-C++ files"] = function()
   eq(is_test_file("/path/to/file.txt"), false)
 end
 
+T["should respect custom is_test_file configuration"] = function()
+  child.lua_func(function()
+    require("neotest-cpp").setup({
+      is_test_file = function(file_path)
+        return vim.endswith(file_path, "_test.cpp")
+      end,
+    })
+  end)
+
+  eq(is_test_file("/path/to/my_test.cpp"), true)
+  eq(is_test_file("/path/to/regular.cpp"), false)
+  eq(is_test_file("/path/to/test.cpp"), false)
+end
+
 return T