plugins/treesitter: extract combine-plugins test to separate file

tests/test-sources/plugins/languages/treesitter/combine-plugins.nix

@@ -0,0 +1,37 @@
+{ pkgs, ... }:
+{
+  combine-plugins = {
+    performance.combinePlugins.enable = true;
+
+    plugins.treesitter = {
+      enable = true;
+
+      # Exclude nixvim injections for test to pass
+      nixvimInjections = false;
+    };
+
+    extraConfigLuaPost = ''
+      -- Ensure that queries from nvim-treesitter are first in rtp
+      local queries_path = "${pkgs.vimPlugins.nvim-treesitter}/queries"
+      for name, type in vim.fs.dir(queries_path, {depth = 10}) do
+        if type == "file" then
+          -- Resolve all symlinks and compare nvim-treesitter's path with
+          -- whatever we've got from runtime
+          local nvim_treesitter_path = assert(vim.uv.fs_realpath(vim.fs.joinpath(queries_path, name)))
+          local rtp_path = assert(
+            vim.uv.fs_realpath(vim.api.nvim_get_runtime_file("queries/" .. name, false)[1]),
+            name .. " not found in runtime"
+          )
+          assert(
+            nvim_treesitter_path == rtp_path,
+            string.format(
+              "%s from rtp (%s) is not the same as from nvim-treesitter (%s)",
+              name,
+              rtp_path, nvim_treesitter_path
+            )
+          )
+        end
+      end
+    '';
+  };
+}

tests/test-sources/plugins/languages/treesitter/treesitter.nix

@@ -120,39 +120,4 @@
       ];
     };
   };
-
-  combine-plugins = {
-    performance.combinePlugins.enable = true;
-
-    plugins.treesitter = {
-      enable = true;
-
-      # Exclude nixvim injections for test to pass
-      nixvimInjections = false;
-    };
-
-    extraConfigLuaPost = ''
-      -- Ensure that queries from nvim-treesitter are first in rtp
-      local queries_path = "${pkgs.vimPlugins.nvim-treesitter}/queries"
-      for name, type in vim.fs.dir(queries_path, {depth = 10}) do
-        if type == "file" then
-          -- Resolve all symlinks and compare nvim-treesitter's path with
-          -- whatever we've got from runtime
-          local nvim_treesitter_path = assert(vim.uv.fs_realpath(vim.fs.joinpath(queries_path, name)))
-          local rtp_path = assert(
-            vim.uv.fs_realpath(vim.api.nvim_get_runtime_file("queries/" .. name, false)[1]),
-            name .. " not found in runtime"
-          )
-          assert(
-            nvim_treesitter_path == rtp_path,
-            string.format(
-              "%s from rtp (%s) is not the same as from nvim-treesitter (%s)",
-              name,
-              rtp_path, nvim_treesitter_path
-            )
-          )
-        end
-      end
-    '';
-  };
 }