plugins/tmux-navigator: init + tests (#314)

plugins/default.nix

@@ -86,6 +86,7 @@
     ./utils/specs.nix
     ./utils/startify.nix
     ./utils/surround.nix
+    ./utils/tmux-navigator.nix
     ./utils/todo-comments.nix
     ./utils/undotree.nix
     ./utils/vim-bbye.nix

plugins/utils/tmux-navigator.nix

@@ -0,0 +1,42 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+} @ attrs:
+with lib; let
+  cfg = config.plugins.tmux-navigator;
+  helpers = import ../helpers.nix {inherit lib;};
+in {
+  options.plugins.tmux-navigator = {
+    enable = mkEnableOption "Enable Tmux-Navigator (see https://github.com/christoomey/vim-tmux-navigator for tmux installation instruction)";
+
+    package = helpers.mkPackageOption "tmux-navigator" pkgs.vimPlugins.tmux-navigator;
+
+    tmuxNavigatorSaveOnSwitch = helpers.mkNullOrOption (lib.types.enum [1 2]) ''
+      null: don't save on switch (default value)
+      1: update (write the current buffer, but only if changed)
+      2: wall (write all buffers)
+    '';
+
+    tmuxNavigatorDisableWhenZoomed = helpers.mkNullOrOption (lib.types.enum [1]) ''
+      null: unzoom when moving from Vim to another pane (default value)
+      1: If the tmux window is zoomed, keep it zoomed when moving from Vim to another pane
+    '';
+
+    tmuxNavigatorNoWrap = helpers.mkNullOrOption (lib.types.enum [1]) ''
+      null: move past the edge of the screen, tmux/vim will wrap around to the opposite side (default value)
+      1: disable wrap
+    '';
+  };
+
+  config = mkIf cfg.enable {
+    extraPlugins = [cfg.package];
+
+    globals = {
+      tmux_navigator_save_on_switch = cfg.tmuxNavigatorSaveOnSwitch;
+      tmux_navigator_disable_when_zoomed = cfg.tmuxNavigatorDisableWhenZoomed;
+      tmux_navigator_no_wrap = cfg.tmuxNavigatorNoWrap;
+    };
+  };
+}

tests/test-sources/plugins/utils/tmux-navigator.nix

@@ -0,0 +1,19 @@
+{
+  # Empty configuration
+  empty = {
+    plugins.tmux-navigator.enable = true;
+  };
+
+  # Actiavte all settings
+  defaults = {
+    plugins.tmux-navigator = {
+      enable = true;
+
+      tmuxNavigatorSaveOnSwitch = 2;
+
+      tmuxNavigatorDisableWhenZoomed = 1;
+
+      tmuxNavigatorNoWrap = 1;
+    };
+  };
+}