diff --git a/src/userlib/mod.rs b/src/userlib/mod.rs
index 67d530d..92ba289 100644
--- a/src/userlib/mod.rs
+++ b/src/userlib/mod.rs
@@ -155,7 +155,7 @@ impl UserDBLocal {
     }
 }
 
-use crate::api::{DeleteHome, DeletePrimaryGroup, NewUserArgs, UserDBRead, UserDBWrite};
+use crate::api::{DeleteHome, NewUserArgs, UserDBRead, UserDBWrite};
 impl UserDBWrite for UserDBLocal {
     fn delete_user(&mut self, args: NewUserArgs) -> Result<crate::User, UserLibError> {
         // try to get the user from the database
@@ -190,10 +190,10 @@ impl UserDBWrite for UserDBLocal {
                 error!("The source files have changed. Deleting the user could corrupt the userdatabase. Aborting!");
                 Err(format!("The userdatabase has been changed {}", args.username).into())
             } else {
-                UserDBLocal::delete_from_passwd(user, passwd_file_content, &mut locked_p)?;
-                UserDBLocal::delete_from_shadow(user, shadow_file_content, &mut locked_s)?;
+                Self::delete_from_passwd(user, passwd_file_content, &mut locked_p)?;
+                Self::delete_from_shadow(user, shadow_file_content, &mut locked_s)?;
                 if args.delete_home == DeleteHome::Delete {
-                    UserDBLocal::delete_home(user)?;
+                    Self::delete_home(user)?;
                 }
                 let group = self.get_group_pos_by_id(user.get_gid());
                 match group {
diff --git a/tests/delete_user_test.rs b/tests/delete_user_test.rs
index bc08727..678a8de 100644
--- a/tests/delete_user_test.rs
+++ b/tests/delete_user_test.rs
@@ -3,5 +3,43 @@ mod testfiles;
 
 #[test]
 fn test_test() {
-    assert_eq!(1, 1);
+    use testfiles::Fixture;
+
+    use adduser::api::UserDBWrite;
+    use adduser::api::UserRead;
+    use std::fs;
+
+    let p = Fixture::copy("passwd");
+    let s = Fixture::copy("shadow");
+    let g = Fixture::copy("group");
+
+    let pf = fs::read_to_string(&p.path).unwrap();
+
+    let mf = adduser::Files {
+        passwd: Some(p.path.clone()),
+        shadow: Some(s.path.clone()),
+        group: Some(g.path.clone()),
+    };
+
+    let mut db = adduser::UserDBLocal::load_files(mf).unwrap();
+
+    let user_res: Result<adduser::User, adduser::UserLibError> = db.delete_user(
+        adduser::api::NewUserArgs::builder()
+            .username("teste")
+            // .delete_home(adduser::api::DeleteHome::Delete)
+            .build()
+            .unwrap(),
+    );
+    let pf2 = fs::read_to_string(&p.path).unwrap();
+    assert_eq!(user_res.unwrap().get_username().unwrap(), "teste");
+    let pfl = pf.lines();
+    let pfl2 = pf2.lines();
+    for (l1, l2) in pfl.zip(pfl2) {
+        if l1 != l2 {
+            dbg!(l1, l2);
+            assert!(l1.starts_with("teste"));
+            assert!(l2.starts_with("bergfried"));
+            break;
+        }
+    }
 }
diff --git a/tests/fixtures/group b/tests/fixtures/group
new file mode 100644
index 0000000..4166515
--- /dev/null
+++ b/tests/fixtures/group
@@ -0,0 +1,93 @@
+root:x:0:
+bin:x:1:
+daemon:x:2:
+sys:x:3:
+adm:x:4:
+tty:x:5:
+disk:x:6:
+lp:x:7:
+mem:x:8:
+kmem:x:9:
+wheel:x:10:dietrich
+cdrom:x:11:
+mail:x:12:
+man:x:15:
+dialout:x:18:dietrich
+floppy:x:19:
+games:x:20:
+tape:x:33:
+video:x:39:
+ftp:x:50:
+lock:x:54:dietrich
+audio:x:63:
+users:x:100:
+nobody:x:65534:
+utmp:x:22:
+utempter:x:35:
+input:x:999:
+kvm:x:36:qemu
+render:x:998:
+systemd-journal:x:190:
+systemd-coredump:x:997:
+systemd-network:x:192:
+systemd-resolve:x:193:
+dbus:x:81:
+systemd-timesync:x:996:
+tss:x:59:clevis
+dip:x:40:
+printadmin:x:995:
+gluster:x:994:
+qemu:x:107:
+nm-openconnect:x:993:
+usbmuxd:x:113:
+geoclue:x:992:
+polkitd:x:991:
+rtkit:x:172:
+pulse-access:x:990:
+pulse-rt:x:989:
+pulse:x:171:
+chrony:x:988:
+avahi:x:70:
+pipewire:x:987:
+dnsmasq:x:986:
+saslauth:x:76:
+radvd:x:75:
+rpc:x:32:
+ssh_keys:x:985:
+openvpn:x:984:
+nm-openvpn:x:983:
+libvirt:x:982:dietrich
+unbound:x:981:
+brlapi:x:980:
+apache:x:48:
+colord:x:979:
+rpcuser:x:29:
+abrt:x:173:
+flatpak:x:978:
+gdm:x:42:
+gnome-initial-setup:x:977:
+sshd:x:74:
+slocate:x:21:
+vboxsf:x:976:
+tcpdump:x:72:
+wbpriv:x:88:
+clevis:x:975:
+cockpit-ws:x:974:
+libvirtdbus:x:973:
+setroubleshoot:x:972:
+mysql:x:27:
+firebird:x:971:
+cockpit-wsinstance:x:970:
+pbuilder:x:969:
+teste:x:1002:test,teste
+testnewgroup:x:1015:teste
+hausle:x:1018:dietrich
+bergfried:x:1009:
+t1:x:1019:
+t2:x:1020:
+docker:x:968:
+jackuser:x:967:
+akmods:x:966:
+mock:x:135:
+rtlsdr:x:965:
+Debian-exim:x:128:
diff --git a/tests/fixtures/passwd b/tests/fixtures/passwd
new file mode 100644
index 0000000..dc679d9
--- /dev/null
+++ b/tests/fixtures/passwd
@@ -0,0 +1,60 @@
+root:x:0:0:root:/root:/bin/bash
+bin:x:1:1:bin:/bin:/sbin/nologin
+daemon:x:2:2:daemon:/sbin:/sbin/nologin
+adm:x:3:4:adm:/var/adm:/sbin/nologin
+lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
+sync:x:5:0:sync:/sbin:/bin/sync
+shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
+halt:x:7:0:halt:/sbin:/sbin/halt
+mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
+operator:x:11:0:operator:/root:/sbin/nologin
+games:x:12:100:games:/usr/games:/sbin/nologin
+ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin
+nobody:x:65534:65534:Kernel Overflow User:/:/sbin/nologin
+systemd-coredump:x:999:997:systemd Core Dumper:/:/sbin/nologin
+systemd-network:x:192:192:systemd Network Management:/:/sbin/nologin
+systemd-resolve:x:193:193:systemd Resolver:/:/sbin/nologin
+dbus:x:81:81:System message bus:/:/sbin/nologin
+systemd-timesync:x:998:996:systemd Time Synchronization:/:/sbin/nologin
+tss:x:59:59:Account used by the trousers package to sandbox the tcsd daemon:/dev/null:/sbin/nologin
+gluster:x:997:994:GlusterFS daemons:/run/gluster:/sbin/nologin
+qemu:x:107:107:qemu user:/:/sbin/nologin
+nm-openconnect:x:996:993:NetworkManager user for OpenConnect:/:/sbin/nologin
+usbmuxd:x:113:113:usbmuxd user:/:/sbin/nologin
+geoclue:x:995:992:User for geoclue:/var/lib/geoclue:/sbin/nologin
+polkitd:x:994:991:User for polkitd:/:/sbin/nologin
+rtkit:x:172:172:RealtimeKit:/proc:/sbin/nologin
+pulse:x:171:171:PulseAudio System Daemon:/var/run/pulse:/sbin/nologin
+chrony:x:993:988::/var/lib/chrony:/sbin/nologin
+avahi:x:70:70:Avahi mDNS/DNS-SD Stack:/var/run/avahi-daemon:/sbin/nologin
+pipewire:x:992:987:PipeWire System Daemon:/var/run/pipewire:/sbin/nologin
+dnsmasq:x:986:986:Dnsmasq DHCP and DNS server:/var/lib/dnsmasq:/sbin/nologin
+saslauth:x:985:76:Saslauthd user:/run/saslauthd:/sbin/nologin
+radvd:x:75:75:radvd user:/:/sbin/nologin
+rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin
+openvpn:x:984:984:OpenVPN:/etc/openvpn:/sbin/nologin
+nm-openvpn:x:983:983:Default user for running openvpn spawned by NetworkManager:/:/sbin/nologin
+unbound:x:982:981:Unbound DNS resolver:/etc/unbound:/sbin/nologin
+apache:x:48:48:Apache:/usr/share/httpd:/sbin/nologin
+colord:x:981:979:User for colord:/var/lib/colord:/sbin/nologin
+rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin
+abrt:x:173:173::/etc/abrt:/sbin/nologin
+flatpak:x:980:978:User for flatpak system helper:/:/sbin/nologin
+gdm:x:42:42::/var/lib/gdm:/sbin/nologin
+gnome-initial-setup:x:979:977::/run/gnome-initial-setup/:/sbin/nologin
+sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
+vboxadd:x:978:1::/var/run/vboxadd:/sbin/nologin
+tcpdump:x:72:72::/:/sbin/nologin
+clevis:x:977:975:Clevis Decryption Framework unprivileged user:/var/cache/clevis:/sbin/nologin
+cockpit-ws:x:976:974:User for cockpit-ws:/nonexisting:/sbin/nologin
+libvirtdbus:x:975:973:Libvirt D-Bus bridge:/:/sbin/nologin
+setroubleshoot:x:974:972::/var/lib/setroubleshoot:/sbin/nologin
+mysql:x:27:27:MySQL Server:/var/lib/mysql:/sbin/nologin
+firebird:x:973:971::/:/bin/nologin
+cockpit-wsinstance:x:972:970:User for cockpit-ws instances:/nonexisting:/sbin/nologin
+pbuilder:x:971:969:pbuilder:/var/run/pbuilder:/sbin/nologin
+test:x:1001:1015:Long,007,1499990,1999201,AKK:/home/test:/bin/bash
+teste:x:1002:1002::/home/teste:/bin/bash
+bergfried:x:1009:1009:Bergfried Freiberg,,,,:/home/bergfried:/bin/bash
+akmods:x:970:966:User is used by akmods to build akmod packages:/var/cache/akmods/:/sbin/nologin
+Debian-exim:x:123:128::/var/spool/exim4:/usr/sbin/nologin
\ No newline at end of file
diff --git a/tests/fixtures/shadow b/tests/fixtures/shadow
new file mode 100644
index 0000000..e5c7339
--- /dev/null
+++ b/tests/fixtures/shadow
@@ -0,0 +1,60 @@
+root:$6$I4MRB1rzlIft7qiw$2i0OBungWyGBxXbcxbHNKfeaXKRQBEksxK8o3Zvb8VQKuDOSCaLjh1p6C1yfY.z/BCX0dzozj6l3F67QW1X8b.:18260:0:99999:7:::
+bin:*:17995:0:99999:7:::
+daemon:*:17995:0:99999:7:::
+adm:*:17995:0:99999:7:::
+lp:*:17995:0:99999:7:::
+sync:*:17995:0:99999:7:::
+shutdown:*:17995:0:99999:7:::
+halt:*:17995:0:99999:7:::
+mail:*:17995:0:99999:7:::
+operator:*:17995:0:99999:7:::
+games:*:17995:0:99999:7:::
+ftp:*:17995:0:99999:7:::
+nobody:*:17995:0:99999:7:::
+systemd-coredump:!!:18107::::::
+systemd-network:!!:18107::::::
+systemd-resolve:!!:18107::::::
+dbus:!!:18107::::::
+systemd-timesync:!!:18107::::::
+tss:!!:18107::::::
+gluster:!!:18107::::::
+qemu:!!:18107::::::
+nm-openconnect:!!:18107::::::
+usbmuxd:!!:18107::::::
+geoclue:!!:18107::::::
+polkitd:!!:18107::::::
+rtkit:!!:18107::::::
+pulse:!!:18107::::::
+chrony:!!:18107::::::
+avahi:!!:18107::::::
+pipewire:!!:18107::::::
+dnsmasq:!!:18107::::::
+saslauth:!!:18107::::::
+radvd:!!:18107::::::
+rpc:!!:18107:0:99999:7:::
+openvpn:!!:18107::::::
+nm-openvpn:!!:18107::::::
+unbound:!!:18107::::::
+apache:!!:18107::::::
+colord:!!:18107::::::
+rpcuser:!!:18107::::::
+abrt:!!:18107::::::
+flatpak:!!:18107::::::
+gdm:!!:18107::::::
+gnome-initial-setup:!!:18107::::::
+sshd:!!:18107::::::
+vboxadd:!!:18107::::::
+tcpdump:!!:18107::::::
+clevis:!!:18113::::::
+cockpit-ws:!!:18113::::::
+libvirtdbus:!!:18113::::::
+setroubleshoot:!!:18113::::::
+mysql:!!:18137::::::
+firebird:!!:18140::::::
+cockpit-wsinstance:!!:18196::::::
+pbuilder:!!:18198::::::
+test:$6$K3iBIIJwfJjolbIV$AaDjW1kvaeYl8KAqAkvXMTWloQV2VsB8a33PHYItRPdETtYGKP2T2n6HjUUuXUZFPxLdnJyB8cWlpPCl1x/VP0:18574:0:99999:7:::
+teste:$6$u0Hh.9WKRF1Aeu4g$XqoDyL6Re/4ZLNQCGAXlNacxCxbdigexEqzFzkOVPV5Z1H23hlenjW8ZLgq6GQtFURYwenIFpo1c.r4aW9l5S/:18574:0:99999:7:::
+bergfried:$6$dzc1lAZo7XaWwFx9$MpUJtzD9WFJhgt.5zVtgP6mGjFldNCZ02Pp9S9Y4XTV16fMUuN/0vi5Xs4BH2T0G6EL2gS/gAHRnsyvY4aVi31:18574:0:99999:7:::
+akmods:!!:18395::::::
+Debian-exim:!:18574:0:99999:7:::
diff --git a/tests/testfiles.rs b/tests/testfiles.rs
index ddf9a1f..07b4332 100644
--- a/tests/testfiles.rs
+++ b/tests/testfiles.rs
@@ -5,14 +5,14 @@ use tempfile::TempDir;
 
 use std::ops::Deref;
 
-struct Fixture {
-    path: PathBuf,
-    source: PathBuf,
+pub struct Fixture {
+    pub path: PathBuf,
+    pub source: PathBuf,
     _tempdir: TempDir,
 }
 
 impl Fixture {
-    fn blank(fixture_filename: &str) -> Self {
+    pub fn blank(fixture_filename: &str) -> Self {
         // First, figure out the right file in `tests/fixtures/`:
         let root_dir = &env::var("CARGO_MANIFEST_DIR").expect("$CARGO_MANIFEST_DIR");
         let mut source = PathBuf::from(root_dir);
@@ -30,7 +30,7 @@ impl Fixture {
             path,
         }
     }
-    fn copy(fixture_filename: &str) -> Self {
+    pub fn copy(fixture_filename: &str) -> Self {
         let fixture = Fixture::blank(fixture_filename);
         fs::copy(&fixture.source, &fixture.path).unwrap();
         fixture