diff --git a/tests/modules/services/dunst/default.nix b/tests/modules/services/dunst/default.nix
new file mode 100644
index 000000000..c5c42c08b
--- /dev/null
+++ b/tests/modules/services/dunst/default.nix
@@ -0,0 +1,6 @@
+{ lib, pkgs, ... }:
+
+lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
+  dunst-with-settings = ./with-settings.nix;
+  dunst-without-settings = ./without-settings.nix;
+}
diff --git a/tests/modules/services/dunst/with-settings-expected.ini b/tests/modules/services/dunst/with-settings-expected.ini
new file mode 100644
index 000000000..73a50ecca
--- /dev/null
+++ b/tests/modules/services/dunst/with-settings-expected.ini
@@ -0,0 +1,14 @@
+[global]
+font="Droid Sans 9"
+frame_color="#eceff1"
+height=300
+icon_path="/run/current-system/sw/share/icons/hicolor/32x32/actions:/run/current-system/sw/share/icons/hicolor/32x32/animations:/run/current-system/sw/share/icons/hicolor/32x32/apps:/run/current-system/sw/share/icons/hicolor/32x32/categories:/run/current-system/sw/share/icons/hicolor/32x32/devices:/run/current-system/sw/share/icons/hicolor/32x32/emblems:/run/current-system/sw/share/icons/hicolor/32x32/emotes:/run/current-system/sw/share/icons/hicolor/32x32/filesystem:/run/current-system/sw/share/icons/hicolor/32x32/intl:/run/current-system/sw/share/icons/hicolor/32x32/legacy:/run/current-system/sw/share/icons/hicolor/32x32/mimetypes:/run/current-system/sw/share/icons/hicolor/32x32/places:/run/current-system/sw/share/icons/hicolor/32x32/status:/run/current-system/sw/share/icons/hicolor/32x32/stock:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/actions:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/animations:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/apps:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/categories:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/devices:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/emblems:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/emotes:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/filesystem:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/intl:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/legacy:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/mimetypes:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/places:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/status:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/stock:@hicolor-icon-theme@/share/icons/hicolor/32x32/actions:@hicolor-icon-theme@/share/icons/hicolor/32x32/animations:@hicolor-icon-theme@/share/icons/hicolor/32x32/apps:@hicolor-icon-theme@/share/icons/hicolor/32x32/categories:@hicolor-icon-theme@/share/icons/hicolor/32x32/devices:@hicolor-icon-theme@/share/icons/hicolor/32x32/emblems:@hicolor-icon-theme@/share/icons/hicolor/32x32/emotes:@hicolor-icon-theme@/share/icons/hicolor/32x32/filesystem:@hicolor-icon-theme@/share/icons/hicolor/32x32/intl:@hicolor-icon-theme@/share/icons/hicolor/32x32/legacy:@hicolor-icon-theme@/share/icons/hicolor/32x32/mimetypes:@hicolor-icon-theme@/share/icons/hicolor/32x32/places:@hicolor-icon-theme@/share/icons/hicolor/32x32/status:@hicolor-icon-theme@/share/icons/hicolor/32x32/stock"
+offset="30x50"
+origin="top-right"
+transparency=10
+width=300
+
+[urgency_normal]
+background="#37474f"
+foreground="#eceff1"
+timeout=10
diff --git a/tests/modules/services/dunst/with-settings.nix b/tests/modules/services/dunst/with-settings.nix
new file mode 100644
index 000000000..7c853be2a
--- /dev/null
+++ b/tests/modules/services/dunst/with-settings.nix
@@ -0,0 +1,59 @@
+{ config, ... }:
+let
+  inherit (config.lib.test) mkStubPackage;
+in
+{
+  services.dunst = {
+    enable = true;
+    package = mkStubPackage {
+      name = "dunst";
+      buildScript = ''
+        mkdir -p $out/share/dbus-1/services
+        echo test > $out/share/dbus-1/services/org.knopwob.dunst.service
+      '';
+    };
+    settings = {
+      global = {
+        width = 300;
+        height = 300;
+        offset = "30x50";
+        origin = "top-right";
+        transparency = 10;
+        frame_color = "#eceff1";
+        font = "Droid Sans 9";
+      };
+
+      urgency_normal = {
+        background = "#37474f";
+        foreground = "#eceff1";
+        timeout = 10;
+      };
+    };
+  };
+
+  nmt.script = ''
+    configFile=home-files/.config/dunst/dunstrc
+    serviceFile=home-files/.config/systemd/user/dunst.service
+
+    assertFileExists $configFile
+    assertFileContent $configFile ${./with-settings-expected.ini}
+
+    assertFileExists $serviceFile
+    assertFileContent \
+      $(normalizeStorePaths $serviceFile) \
+      ${builtins.toFile "expected.service" ''
+        [Service]
+        BusName=org.freedesktop.Notifications
+        Environment=
+        ExecReload=/nix/store/00000000000000000000000000000000-dunst/bin/dunstctl reload
+        ExecStart=/nix/store/00000000000000000000000000000000-dunst/bin/dunst
+        Type=dbus
+
+        [Unit]
+        After=graphical-session.target
+        Description=Dunst notification daemon
+        PartOf=graphical-session.target
+        X-Reload-Triggers=/nix/store/00000000000000000000000000000000-hm_dunstdunstrc
+      ''}
+  '';
+}
diff --git a/tests/modules/services/dunst/without-settings-expected.ini b/tests/modules/services/dunst/without-settings-expected.ini
new file mode 100644
index 000000000..d3ee2d574
--- /dev/null
+++ b/tests/modules/services/dunst/without-settings-expected.ini
@@ -0,0 +1,2 @@
+[global]
+icon_path="/run/current-system/sw/share/icons/hicolor/32x32/actions:/run/current-system/sw/share/icons/hicolor/32x32/animations:/run/current-system/sw/share/icons/hicolor/32x32/apps:/run/current-system/sw/share/icons/hicolor/32x32/categories:/run/current-system/sw/share/icons/hicolor/32x32/devices:/run/current-system/sw/share/icons/hicolor/32x32/emblems:/run/current-system/sw/share/icons/hicolor/32x32/emotes:/run/current-system/sw/share/icons/hicolor/32x32/filesystem:/run/current-system/sw/share/icons/hicolor/32x32/intl:/run/current-system/sw/share/icons/hicolor/32x32/legacy:/run/current-system/sw/share/icons/hicolor/32x32/mimetypes:/run/current-system/sw/share/icons/hicolor/32x32/places:/run/current-system/sw/share/icons/hicolor/32x32/status:/run/current-system/sw/share/icons/hicolor/32x32/stock:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/actions:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/animations:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/apps:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/categories:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/devices:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/emblems:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/emotes:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/filesystem:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/intl:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/legacy:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/mimetypes:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/places:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/status:/home/hm-user/.nix-profile/share/icons/hicolor/32x32/stock:@hicolor-icon-theme@/share/icons/hicolor/32x32/actions:@hicolor-icon-theme@/share/icons/hicolor/32x32/animations:@hicolor-icon-theme@/share/icons/hicolor/32x32/apps:@hicolor-icon-theme@/share/icons/hicolor/32x32/categories:@hicolor-icon-theme@/share/icons/hicolor/32x32/devices:@hicolor-icon-theme@/share/icons/hicolor/32x32/emblems:@hicolor-icon-theme@/share/icons/hicolor/32x32/emotes:@hicolor-icon-theme@/share/icons/hicolor/32x32/filesystem:@hicolor-icon-theme@/share/icons/hicolor/32x32/intl:@hicolor-icon-theme@/share/icons/hicolor/32x32/legacy:@hicolor-icon-theme@/share/icons/hicolor/32x32/mimetypes:@hicolor-icon-theme@/share/icons/hicolor/32x32/places:@hicolor-icon-theme@/share/icons/hicolor/32x32/status:@hicolor-icon-theme@/share/icons/hicolor/32x32/stock"
diff --git a/tests/modules/services/dunst/without-settings.nix b/tests/modules/services/dunst/without-settings.nix
new file mode 100644
index 000000000..b4b0ce97e
--- /dev/null
+++ b/tests/modules/services/dunst/without-settings.nix
@@ -0,0 +1,42 @@
+{ config, ... }:
+let
+  inherit (config.lib.test) mkStubPackage;
+in
+{
+  services.dunst = {
+    enable = true;
+    package = mkStubPackage {
+      name = "dunst";
+      buildScript = ''
+        mkdir -p $out/share/dbus-1/services
+        echo test > $out/share/dbus-1/services/org.knopwob.dunst.service
+      '';
+    };
+  };
+
+  nmt.script = ''
+    configFile=home-files/.config/dunst/dunstrc
+    serviceFile=home-files/.config/systemd/user/dunst.service
+
+    assertFileExists $configFile
+    assertFileContent $configFile ${./without-settings-expected.ini}
+
+    assertFileExists $serviceFile
+    assertFileContent \
+      $(normalizeStorePaths $serviceFile) \
+      ${builtins.toFile "expected.service" ''
+        [Service]
+        BusName=org.freedesktop.Notifications
+        Environment=
+        ExecReload=/nix/store/00000000000000000000000000000000-dunst/bin/dunstctl reload
+        ExecStart=/nix/store/00000000000000000000000000000000-dunst/bin/dunst
+        Type=dbus
+
+        [Unit]
+        After=graphical-session.target
+        Description=Dunst notification daemon
+        PartOf=graphical-session.target
+        X-Reload-Triggers=/nix/store/00000000000000000000000000000000-hm_dunstdunstrc
+      ''}
+  '';
+}