tests: move git and files tests to directories

tests/modules/programs/git/git.nix

@@ -0,0 +1,75 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  gitInclude = {
+    user = {
+      name = "John Doe";
+      email = "user@example.org";
+    };
+  };
+
+  substituteExpected = path: pkgs.substituteAll {
+    src = path;
+
+    git_include_path = pkgs.writeText "contents" (generators.toINI {} gitInclude);
+  };
+
+in
+
+{
+  config = {
+    programs.git = mkMerge [
+      {
+        enable = true;
+        package = pkgs.gitMinimal;
+        aliases = {
+          a1 = "foo";
+          a2 = "bar";
+        };
+        extraConfig = {
+          extra = {
+            name = "value";
+            multiple = [1];
+          };
+        };
+        ignores = [ "*~" "*.swp" ];
+        includes = [
+          { path = "~/path/to/config.inc"; }
+          {
+            path = "~/path/to/conditional.inc";
+            condition = "gitdir:~/src/dir";
+          }
+          {
+            condition = "gitdir:~/src/dir";
+            contents = gitInclude;
+          }
+        ];
+        signing = {
+          gpgPath = "path-to-gpg";
+          key = "00112233445566778899AABBCCDDEEFF";
+          signByDefault = true;
+        };
+        userEmail = "user@example.org";
+        userName = "John Doe";
+        lfs.enable = true;
+      }
+
+      {
+        aliases.a2 = mkForce "baz";
+        extraConfig."extra \"backcompat.with.dots\"".previously = "worked";
+        extraConfig.extra.boolean = true;
+        extraConfig.extra.integer = 38;
+        extraConfig.extra.multiple = [2];
+        extraConfig.extra.subsection.value = "test";
+      }
+    ];
+
+    nmt.script = ''
+      assertFileExists home-files/.config/git/config
+      assertFileContent home-files/.config/git/config ${substituteExpected ./git-expected.conf}
+    '';
+  };
+}