tests/neovim: add wrapper args test

Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

tests/modules/programs/neovim/default.nix

@@ -2,6 +2,7 @@
   neovim-plugin-config = ./plugin-config.nix;
   neovim-coc-config = ./coc-config.nix;
   neovim-runtime = ./runtime.nix;
+  neovim-wrapper-args = ./wrapper-args.nix;
 
   # waiting for a nixpkgs patch
   neovim-no-init = ./no-init.nix;

tests/modules/programs/neovim/wrapper-args.nix

@@ -0,0 +1,83 @@
+{
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  inherit (pkgs.stdenv.hostPlatform) isLinux;
+
+  dummyDep = pkgs.runCommand "dummy-dep" { } ''
+    mkdir -p $out/bin
+    echo "echo dummy" > $out/bin/dummy-dep-bin
+    chmod +x $out/bin/dummy-dep-bin
+  '';
+
+  dummyPlugin = pkgs.vimUtils.buildVimPlugin {
+    pname = "dummy-plugin";
+    version = "1.0";
+    src = pkgs.writeTextDir "plugin/dummy.vim" "\" dummy";
+    runtimeDeps = [ dummyDep ];
+  };
+in
+{
+  imports = [ ./stubs.nix ];
+  tests.stubs.wl-clipboard = { };
+
+  programs.neovim = {
+    enable = true;
+    extraName = "-my-suffix";
+    withPerl = true;
+    withPython3 = true;
+    withRuby = true;
+    withNodeJs = true;
+    autowrapRuntimeDeps = true;
+    waylandSupport = isLinux;
+    plugins = [ dummyPlugin ];
+  };
+
+  nmt.script = ''
+    nvimBin="home-path/bin/nvim"
+
+    assertBinaryContains() {
+        local file="$TESTED/$1"
+        if [[ $1 == /* ]]; then file="$1"; fi
+
+        if ! grep -a -qF -- "$2" "$file"; then
+            fail "Expected binary file '$1' to contain '$2' but it did not."
+        fi
+    }
+
+    # Ensure the main binary exists
+    assertFileExists "$nvimBin"
+
+    # 1. extraName: Check if the suffix is in the rplugin manifest path within the wrapper
+    assertBinaryContains "$nvimBin" "-my-suffix/rplugin.vim"
+
+    # 2. withPerl: Check if nvim-perl binary exists and host prog is set
+    assertFileExists "home-path/bin/nvim-perl"
+    assertBinaryContains "$nvimBin" "perl_host_prog="
+
+    # 3. withPython3: Check if nvim-python3 binary exists and host prog is set
+    assertFileExists "home-path/bin/nvim-python3"
+    assertBinaryContains "$nvimBin" "python3_host_prog="
+
+    # 4. withRuby: Check if nvim-ruby binary exists, GEM_HOME and host prog are set
+    assertFileExists "home-path/bin/nvim-ruby"
+    assertBinaryContains "$nvimBin" "GEM_HOME="
+    assertBinaryContains "$nvimBin" "ruby_host_prog="
+
+    # 5. withNodeJs: Check if nvim-node binary exists and host prog is set
+    assertFileExists "home-path/bin/nvim-node"
+    assertBinaryContains "$nvimBin" "node_host_prog="
+
+    # 6. waylandSupport: Check for wl-clipboard path in wrapper's PATH modification
+    # We check for the store path of wl-clipboard in the current pkgs
+    ${lib.optionalString isLinux ''
+      assertBinaryContains "$nvimBin" "wl-clipboard-"
+    ''}
+
+    # 7. autowrapRuntimeDeps: Check for dummyDep path in wrapper's PATH modification
+    assertBinaryContains "$nvimBin" "${dummyDep}/bin"
+  '';
+}