From af1588ad6fb3fc41fcaf9e2e41f1a389a483a41c Mon Sep 17 00:00:00 2001
From: Benedikt Rips <benedikt.rips@gmail.com>
Date: Sun, 26 Apr 2026 23:10:27 +0200
Subject: [PATCH] fontconfig: add test for default fonts

---
 .../modules/misc/fontconfig/default-fonts.nix | 49 +++++++++++++++++++
 tests/modules/misc/fontconfig/default.nix     |  1 +
 2 files changed, 50 insertions(+)
 create mode 100644 tests/modules/misc/fontconfig/default-fonts.nix

diff --git a/tests/modules/misc/fontconfig/default-fonts.nix b/tests/modules/misc/fontconfig/default-fonts.nix
new file mode 100644
index 000000000..454e6bf12
--- /dev/null
+++ b/tests/modules/misc/fontconfig/default-fonts.nix
@@ -0,0 +1,49 @@
+let
+  configFile = "home-files/.config/fontconfig/conf.d/52-hm-default-fonts.conf";
+in
+{
+  fonts.fontconfig = {
+    enable = true;
+    defaultFonts = {
+      sansSerif = [
+        "A"
+        "B"
+      ];
+      emoji = [ "C" ];
+    };
+  };
+
+  nmt.script = ''
+    assertFileExists ${configFile}
+    assertFileContent ${configFile} ${builtins.toFile "fonts.conf" ''
+      <?xml version='1.0'?>
+
+      <!-- Generated by Home Manager. -->
+
+      <!DOCTYPE fontconfig SYSTEM 'urn:fontconfig:fonts.dtd'>
+      <fontconfig>
+      <!-- Default fonts -->
+      <alias binding="same">
+        <family>sans-serif</family>
+        <prefer>
+        <family>A</family>
+      <family>B</family>
+
+        </prefer>
+      </alias>
+
+
+
+      <alias binding="same">
+        <family>emoji</family>
+        <prefer>
+        <family>C</family>
+
+        </prefer>
+      </alias>
+
+
+      </fontconfig>
+    ''}
+  '';
+}
diff --git a/tests/modules/misc/fontconfig/default.nix b/tests/modules/misc/fontconfig/default.nix
index 468a70460..314334a20 100644
--- a/tests/modules/misc/fontconfig/default.nix
+++ b/tests/modules/misc/fontconfig/default.nix
@@ -3,6 +3,7 @@
   fontconfig-single-font-package = ./single-font-package.nix;
   fontconfig-multiple-font-packages = ./multiple-font-packages.nix;
 
+  fontconfig-default-fonts = ./default-fonts.nix;
   fontconfig-default-rendering = ./default-rendering.nix;
   fontconfig-custom-rendering = ./custom-rendering.nix;
   fontconfig-extra-config-files = ./extra-config-files.nix;