tests/claude-code: add rules tests

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

tests/modules/programs/claude-code/default.nix

@@ -5,6 +5,8 @@
   claude-code-assertion = ./assertion.nix;
   claude-code-memory-management = ./memory-management.nix;
   claude-code-memory-from-source = ./memory-from-source.nix;
+  claude-code-rules-dir = ./rules-dir.nix;
+  claude-code-rules-path = ./rules-path.nix;
   claude-code-agents-dir = ./agents-dir.nix;
   claude-code-commands-dir = ./commands-dir.nix;
   claude-code-hooks-dir = ./hooks-dir.nix;

tests/modules/programs/claude-code/rules-dir.nix

@@ -0,0 +1,14 @@
+{
+  programs.claude-code = {
+    enable = true;
+    rulesDir = ./rules;
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.claude/rules/test-rule.md
+    assertLinkExists home-files/.claude/rules/test-rule.md
+    assertFileContent \
+      home-files/.claude/rules/test-rule.md \
+      ${./rules/test-rule.md}
+  '';
+}

tests/modules/programs/claude-code/rules-path.nix

@@ -0,0 +1,20 @@
+{
+  programs.claude-code = {
+    enable = true;
+    rules = {
+      test-rule = ./test-rule.md;
+      inline-rule = ''
+        # Inline Rule
+
+        This is an inline rule for testing.
+      '';
+    };
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.claude/rules/test-rule.md
+    assertFileContent home-files/.claude/rules/test-rule.md \
+      ${./test-rule.md}
+    assertFileExists home-files/.claude/rules/inline-rule.md
+  '';
+}

tests/modules/programs/claude-code/rules/test-rule.md

@@ -0,0 +1,9 @@
+# Test Rule from Directory
+
+This is a test rule loaded from a directory.
+Used to verify rulesDir support functionality.
+
+## Best Practices
+
+- Write clean code
+- Test thoroughly

tests/modules/programs/claude-code/test-rule.md

@@ -0,0 +1,9 @@
+# Test Rule
+
+This is a test rule loaded from a file path.
+Used to verify path support functionality for rules.
+
+## Guidelines
+
+- Follow test conventions
+- Maintain code quality