diff --git a/services-agnostic/svnserve/default.nix b/services-agnostic/svnserve/default.nix
index 7656015..d054543 100644
--- a/services-agnostic/svnserve/default.nix
+++ b/services-agnostic/svnserve/default.nix
@@ -21,9 +21,9 @@ createManagedProcess {
     ''}
   '';
   process = "${subversion.out}/bin/svnserve";
-  args = [ "-r" svnBaseDir "--listen-port" (toString port) ];
-  foregroundProcessExtraArgs = [ "--foreground" ];
-  daemonExtraArgs = [ "--daemon" "--pid-file" pidFile ];
+  args = [ "-r" svnBaseDir "--listen-port" port "--daemon" ];
+  foregroundProcessExtraArgs = ["--foreground" ];
+  daemonExtraArgs = [ "--pid-file" pidFile ];
 
   overrides = {
     sysvinit = {
diff --git a/tests/apache-tomcat-ajp-reverse-proxy/default.nix b/tests/apache-tomcat-ajp-reverse-proxy/default.nix
new file mode 100644
index 0000000..1d79841
--- /dev/null
+++ b/tests/apache-tomcat-ajp-reverse-proxy/default.nix
@@ -0,0 +1,25 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+
+  readiness = {instanceName, instance, stateDir, ...}:
+    if instanceName == "tomcat" then ''
+      machine.wait_for_open_port(${toString instance.httpPort})
+      machine.wait_for_file("${stateDir}/tomcat/webapps/examples")
+    ''
+    else if instanceName == "apache" then ''
+      machine.wait_for_open_port(${toString instance.port})
+    ''
+    else "";
+
+  tests = {instanceName, instance, ...}:
+    pkgs.lib.optionalString (instanceName == "apache") ''
+      machine.succeed("sleep 20")
+      machine.succeed(
+          "curl --fail http://localhost:${toString instance.port}/examples/servlets/servlet/HelloWorldExample | grep 'Hello World!'"
+      )
+    '';
+
+  inherit processManagers profiles;
+}
diff --git a/tests/apache-tomcat-ajp-reverse-proxy/processes.nix b/tests/apache-tomcat-ajp-reverse-proxy/processes.nix
new file mode 100644
index 0000000..1eefbba
--- /dev/null
+++ b/tests/apache-tomcat-ajp-reverse-proxy/processes.nix
@@ -0,0 +1,41 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir libDir spoolDir forceDisableUserChange processManager;
+  };
+in
+rec {
+  tomcat = rec {
+    ajpPort = 8009;
+    httpPort = 8080;
+
+    pkg = constructors.simpleAppservingTomcat {
+      enableAJP = true;
+      inherit ajpPort httpPort;
+    };
+  };
+
+  apache = rec {
+    port = if forceDisableUserChange then 8081 else 80;
+
+    pkg = constructors.reverseProxyApache {
+      inherit port;
+      dependency = tomcat;
+      serverAdmin = "admin@localhost";
+      targetProtocol = "ajp";
+      portPropertyName = "ajpPort";
+    };
+  };
+}
diff --git a/tests/apache-tomcat/default.nix b/tests/apache-tomcat/default.nix
new file mode 100644
index 0000000..373ccf2
--- /dev/null
+++ b/tests/apache-tomcat/default.nix
@@ -0,0 +1,24 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+
+  nixosConfig = {
+    virtualisation.diskSize = 8192;
+    virtualisation.memorySize = 1024;
+  };
+
+  readiness = {instanceName, instance, ...}:
+    ''
+      machine.wait_for_open_port(${toString instance.httpPort})
+    '';
+
+  tests = {instanceName, instance, ...}:
+    ''
+      machine.succeed(
+          "curl --fail http://localhost:${toString instance.httpPort}/examples/servlets/servlet/HelloWorldExample | grep 'Hello World!'"
+      )
+    '';
+
+  inherit processManagers profiles;
+}
diff --git a/tests/apache-tomcat/processes.nix b/tests/apache-tomcat/processes.nix
new file mode 100644
index 0000000..f9ce72a
--- /dev/null
+++ b/tests/apache-tomcat/processes.nix
@@ -0,0 +1,43 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir libDir spoolDir forceDisableUserChange processManager;
+  };
+in
+rec {
+  tomcat-primary = rec {
+    serverPort = 8005;
+    httpPort = 8080;
+    httpsPort = 8443;
+    ajpPort = 8009;
+
+    pkg = constructors.simpleAppservingTomcat {
+      inherit serverPort httpPort httpsPort ajpPort;
+      instanceSuffix = "-primary";
+    };
+  };
+
+  tomcat-secondary = rec {
+    serverPort = 8006;
+    httpPort = 8081;
+    httpsPort = 8444;
+    ajpPort = 8010;
+
+    pkg = constructors.simpleAppservingTomcat {
+      inherit serverPort httpPort httpsPort ajpPort;
+      instanceSuffix = "-secondary";
+    };
+  };
+}
diff --git a/tests/apache/default.nix b/tests/apache/default.nix
new file mode 100644
index 0000000..e111377
--- /dev/null
+++ b/tests/apache/default.nix
@@ -0,0 +1,17 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+
+  readiness = {instanceName, instance, ...}:
+    ''
+      machine.wait_for_open_port(${toString instance.port})
+    '';
+
+  tests = {instanceName, instance, ...}:
+    ''
+      machine.succeed("curl --fail http://localhost:${toString instance.port} | grep 'Hello world!'")
+    '';
+
+  inherit processManagers profiles;
+}
diff --git a/tests/apache/processes.nix b/tests/apache/processes.nix
new file mode 100644
index 0000000..25e4bbe
--- /dev/null
+++ b/tests/apache/processes.nix
@@ -0,0 +1,84 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir libDir spoolDir forceDisableUserChange processManager;
+  };
+
+  webappStatic = pkgs.stdenv.mkDerivation {
+    name = "webapp-static";
+    buildCommand = ''
+      mkdir -p $out
+      cat > $out/index.html <<EOF
+      <!DOCTYPE html>
+
+      <html>
+          <head>
+              <title>Hello</title>
+          </head>
+
+          <body>
+              <h1>Hello world!</h1>
+          </body>
+      </html>
+      EOF
+    '';
+  };
+
+  webappPHP = pkgs.stdenv.mkDerivation {
+    name = "webapp-php";
+    buildCommand = ''
+      mkdir -p $out
+      cat > $out/index.php <<EOF
+      <!DOCTYPE html>
+
+      <html>
+          <head>
+              <title>Hello</title>
+          </head>
+
+          <body>
+              <h1><?php print("Hello world!"); ?></h1>
+          </body>
+      </html>
+      EOF
+    '';
+  };
+in
+rec {
+  # The first instance only serves static web apps
+  apache-primary = rec {
+    port = if forceDisableUserChange then 8080 else 80;
+
+    pkg = constructors.simpleWebappApache {
+      inherit port;
+      instanceSuffix = "-primary";
+      serverAdmin = "root@localhost";
+      documentRoot = webappStatic;
+    };
+  };
+
+  # The second instance is PHP enabled
+  apache-secondary = rec {
+    port = if forceDisableUserChange then 8081 else 81;
+
+    pkg = constructors.simpleWebappApache {
+      inherit port;
+      instanceSuffix = "-secondary";
+      serverAdmin = "root@localhost";
+      documentRoot = webappPHP;
+      enablePHP = true;
+    };
+  };
+}
diff --git a/tests/default.nix b/tests/default.nix
new file mode 100644
index 0000000..63d7bb1
--- /dev/null
+++ b/tests/default.nix
@@ -0,0 +1,45 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, processManagers ? [ "supervisord" "sysvinit" "systemd" "docker" "disnix" "s6-rc" ]
+, profiles ? [ "privileged" "unprivileged" ]
+, nix-processmgmt ? ../../nix-processmgmt
+}:
+
+let
+  testService = import "${nix-processmgmt}/nixproc/test-driver/universal.nix" {
+    inherit system;
+  };
+in
+{
+  apache = import ./apache {
+    inherit pkgs processManagers profiles testService;
+  };
+
+  apache-tomcat = import ./apache-tomcat {
+    inherit pkgs processManagers profiles testService;
+  };
+
+  apache-tomcat-ajp-reverse-proxy = import ./apache-tomcat-ajp-reverse-proxy {
+    inherit pkgs processManagers profiles testService;
+  };
+
+  influxdb = import ./influxdb {
+    inherit pkgs processManagers profiles testService;
+  };
+
+  mongodb = import ./mongodb {
+    inherit pkgs processManagers profiles testService;
+  };
+
+  mysql = import ./mysql {
+    inherit pkgs processManagers profiles testService;
+  };
+
+  postgresql = import ./postgresql {
+    inherit pkgs processManagers profiles testService;
+  };
+
+  svnserve = import ./svnserve {
+    inherit pkgs processManagers profiles testService;
+  };
+}
diff --git a/tests/influxdb/default.nix b/tests/influxdb/default.nix
new file mode 100644
index 0000000..d6ef5b2
--- /dev/null
+++ b/tests/influxdb/default.nix
@@ -0,0 +1,21 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+  systemPackages = [ pkgs.influxdb ];
+
+  readiness = {instanceName, instance, ...}:
+    ''
+      machine.wait_for_open_port(${toString instance.httpPort})
+    '';
+
+  tests = {instanceName, instance, runtimeDir, forceDisableUserChange, ...}:
+    # Make a special exception for the first instance running in privileged mode. It should be connectible with the default settings
+    if instanceName == "influxdb" && !forceDisableUserChange then ''
+      machine.succeed("influx -execute 'show databases' >&2")
+    '' else ''
+      machine.succeed("influx -execute 'show databases' --port ${toString instance.httpPort} >&2")
+    '';
+
+  inherit processManagers profiles;
+}
diff --git a/tests/influxdb/processes.nix b/tests/influxdb/processes.nix
new file mode 100644
index 0000000..65ebbf2
--- /dev/null
+++ b/tests/influxdb/processes.nix
@@ -0,0 +1,38 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir spoolDir libDir forceDisableUserChange processManager;
+  };
+in
+rec {
+  influxdb = rec {
+    rpcPort = 8088;
+    httpPort = 8086;
+
+    pkg = constructors.simpleInfluxdb {
+      inherit rpcPort httpPort;
+    };
+  };
+
+  influxdb-secondary = rec {
+    rpcPort = 8092;
+    httpPort = 8090;
+
+    pkg = constructors.simpleInfluxdb {
+      inherit rpcPort httpPort;
+      instanceSuffix = "-secondary";
+    };
+  };
+}
diff --git a/tests/mongodb/default.nix b/tests/mongodb/default.nix
new file mode 100644
index 0000000..249656c
--- /dev/null
+++ b/tests/mongodb/default.nix
@@ -0,0 +1,24 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+  systemPackages = [ pkgs.mongodb ];
+  nixosConfig = {
+    virtualisation.memorySize = 1024;
+    virtualisation.diskSize = 8192;
+  };
+  readiness = {instanceName, instance, ...}:
+    ''
+      machine.wait_for_open_port(${toString instance.port})
+    '';
+
+  tests = {instanceName, instance, runtimeDir, forceDisableUserChange, ...}:
+    # Make a special exception for the first instance running in privileged mode. It should be connectible with the default settings
+    if instanceName == "mongodb" && !forceDisableUserChange then ''
+      machine.succeed("echo 'show databases' | mongo >&2")
+    '' else ''
+      machine.succeed("echo 'show databases' | mongo --port ${toString instance.port} >&2")
+    '';
+
+  inherit processManagers profiles;
+}
diff --git a/tests/mongodb/processes.nix b/tests/mongodb/processes.nix
new file mode 100644
index 0000000..3b67050
--- /dev/null
+++ b/tests/mongodb/processes.nix
@@ -0,0 +1,36 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir spoolDir libDir forceDisableUserChange processManager;
+  };
+in
+rec {
+  mongodb = rec {
+    port = 27017;
+
+    pkg = constructors.simpleMongodb {
+      inherit port;
+    };
+  };
+
+  mongodb-secondary = rec {
+    port = 27018;
+
+    pkg = constructors.simpleMongodb {
+      inherit port;
+      instanceSuffix = "-secondary";
+    };
+  };
+}
diff --git a/tests/mysql/default.nix b/tests/mysql/default.nix
new file mode 100644
index 0000000..fae9b8c
--- /dev/null
+++ b/tests/mysql/default.nix
@@ -0,0 +1,23 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+  systemPackages = [ pkgs.mysql ];
+
+  readiness = {instanceName, instance, ...}:
+    ''
+      machine.wait_for_open_port(${toString instance.port})
+    '';
+
+  tests = {instanceName, instance, runtimeDir, forceDisableUserChange, ...}:
+    # Make a special exception for the first instance running in privileged mode. It should be connectible with the default settings
+    if instanceName == "mysql" && !forceDisableUserChange then ''
+      machine.succeed("echo 'show databases;' | mysql >&2")
+    '' else ''
+      machine.succeed(
+          "echo 'show databases;' | mysql -S ${runtimeDir}/mysqld${instance.instanceSuffix}/mysqld.sock >&2"
+      )
+    '';
+
+  inherit processManagers profiles;
+}
diff --git a/tests/mysql/processes.nix b/tests/mysql/processes.nix
new file mode 100644
index 0000000..4ef7a66
--- /dev/null
+++ b/tests/mysql/processes.nix
@@ -0,0 +1,37 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir spoolDir libDir forceDisableUserChange processManager;
+  };
+in
+rec {
+  mysql = rec {
+    port = 3306;
+    instanceSuffix = "";
+
+    pkg = constructors.mysql {
+      inherit port instanceSuffix;
+    };
+  };
+
+  mysql-secondary = rec {
+    port = 3307;
+    instanceSuffix = "-secondary";
+
+    pkg = constructors.mysql {
+      inherit port instanceSuffix;
+    };
+  };
+}
diff --git a/tests/postgresql/default.nix b/tests/postgresql/default.nix
new file mode 100644
index 0000000..c8dbf07
--- /dev/null
+++ b/tests/postgresql/default.nix
@@ -0,0 +1,29 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+  systemPackages = [ pkgs.postgresql ];
+  nixosConfig = {
+    virtualisation.diskSize = 8192;
+    virtualisation.memorySize = 1024;
+  };
+
+  readiness = {instanceName, instance, ...}:
+    ''
+      machine.wait_for_open_port(${toString instance.port})
+    '';
+
+  tests = {instanceName, instance, runtimeDir, forceDisableUserChange, ...}:
+    # Make a special exception for the first instance running in privileged mode. It should be connectible with the default settings
+    if instanceName == "postgresql" && !forceDisableUserChange then ''
+      machine.succeed("su - postgresql -c 'psql -l'")
+    '' else ''
+      # fmt: off
+      machine.succeed(
+          "su - ${if forceDisableUserChange then "unprivileged" else instanceName} -c 'psql ${pkgs.lib.optionalString forceDisableUserChange "-U unprivileged"} -h ${runtimeDir}/${instanceName} --port ${toString instance.port} -l'"
+      )
+      # fmt: on
+    '';
+
+  inherit processManagers profiles;
+}
diff --git a/tests/postgresql/processes.nix b/tests/postgresql/processes.nix
new file mode 100644
index 0000000..0a503d9
--- /dev/null
+++ b/tests/postgresql/processes.nix
@@ -0,0 +1,36 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir spoolDir libDir forceDisableUserChange processManager;
+  };
+in
+rec {
+  postgresql = rec {
+    port = 5432;
+
+    pkg = constructors.simplePostgresql {
+      inherit port;
+    };
+  };
+
+  postgresql-secondary = rec {
+    port = 5433;
+
+    pkg = constructors.simplePostgresql {
+      inherit port;
+      instanceSuffix = "-secondary";
+    };
+  };
+}
diff --git a/tests/svnserve/default.nix b/tests/svnserve/default.nix
new file mode 100644
index 0000000..e18f132
--- /dev/null
+++ b/tests/svnserve/default.nix
@@ -0,0 +1,39 @@
+{ pkgs, testService, processManagers, profiles }:
+
+testService {
+  exprFile = ./processes.nix;
+  systemPackages = [ pkgs.subversion ];
+
+  readiness = {instanceName, instance, ...}:
+    ''
+      machine.wait_for_open_port(${toString instance.port})
+    '';
+
+  tests = {instanceName, instance, stateDir, forceDisableUserChange, ...}:
+    ''
+      # fmt: off
+      machine.succeed(
+          "mkdir -p ${instance.svnBaseDir}"
+      )
+      machine.succeed(
+          "svnadmin create ${instance.svnBaseDir}/testrepo-${instanceName}"
+      )
+      # fmt: on
+    ''
+    # Make a special exception for the first instance running in privileged mode. It should be connectible with the default settings
+    + (if instanceName == "svnserve" && !forceDisableUserChange then ''
+      # fmt: off
+      machine.succeed(
+          "svn co svn://localhost/testrepo-${instanceName}"
+      )
+      # fmt: on
+    '' else ''
+      # fmt: off
+      machine.succeed(
+          "svn co svn://localhost:${toString instance.port}/testrepo-${instanceName}"
+      )
+      # fmt: on
+    '');
+
+  inherit processManagers profiles;
+}
diff --git a/tests/svnserve/processes.nix b/tests/svnserve/processes.nix
new file mode 100644
index 0000000..22dee2e
--- /dev/null
+++ b/tests/svnserve/processes.nix
@@ -0,0 +1,40 @@
+{ pkgs ? import <nixpkgs> { inherit system; }
+, system ? builtins.currentSystem
+, stateDir ? "/var"
+, runtimeDir ? "${stateDir}/run"
+, logDir ? "${stateDir}/log"
+, spoolDir ? "${stateDir}/spool"
+, cacheDir ? "${stateDir}/cache"
+, libDir ? "${stateDir}/lib"
+, tmpDir ? (if stateDir == "/var" then "/tmp" else "${stateDir}/tmp")
+, forceDisableUserChange ? false
+, processManager
+}:
+
+let
+  constructors = import ../../services-agnostic/constructors.nix {
+    inherit pkgs stateDir runtimeDir logDir tmpDir cacheDir libDir spoolDir forceDisableUserChange processManager;
+  };
+in
+rec {
+  svnserve = rec {
+    port = 3690;
+    svnBaseDir = "${stateDir}/repos";
+
+    pkg = constructors.svnserve {
+      inherit port svnBaseDir;
+      svnGroup = "root";
+    };
+  };
+
+  svnserve-secondary = rec {
+    port = 3691;
+    svnBaseDir = "${stateDir}/repos-secondary";
+
+    pkg = constructors.svnserve {
+      inherit port svnBaseDir;
+      instanceSuffix = "-secondary";
+      svnGroup = "root";
+    };
+  };
+}