treewide: nixosTest -> testers.nixosTest

nixos/doc/manual/from_md/release-notes/rl-2111.section.xml

@@ -569,8 +569,9 @@
       <listitem>
         <para>
           The NixOS VM test framework,
-          <literal>pkgs.nixosTest</literal>/<literal>make-test-python.nix</literal>,
+          <literal>pkgs.nixosTest</literal>/<literal>make-test-python.nix</literal>
-          now requires detaching commands such as
+          (<literal>pkgs.testers.nixosTest</literal> since 22.05), now
+          requires detaching commands such as
           <literal>succeed(&quot;foo &amp;&quot;)</literal> and
           <literal>succeed(&quot;foo | xclip -i&quot;)</literal> to
           close stdout. This can be done with a redirect such as

nixos/doc/manual/release-notes/rl-2111.section.md

@@ -166,7 +166,7 @@ In addition to numerous new and upgraded packages, this release has the followin
 
 ## Backward Incompatibilities {#sec-release-21.11-incompatibilities}
 
-- The NixOS VM test framework, `pkgs.nixosTest`/`make-test-python.nix`, now requires detaching commands such as `succeed("foo &")` and `succeed("foo | xclip -i")` to close stdout.
+- The NixOS VM test framework, `pkgs.nixosTest`/`make-test-python.nix` (`pkgs.testers.nixosTest` since 22.05), now requires detaching commands such as `succeed("foo &")` and `succeed("foo | xclip -i")` to close stdout.
   This can be done with a redirect such as `succeed("foo >&2 &")`. This breaking change was necessitated by a race condition causing tests to fail or hang.
   It applies to all methods that invoke commands on the nodes, including `execute`, `succeed`, `fail`, `wait_until_succeeds`, `wait_until_fails`.
 

nixos/lib/build-vms.nix

@@ -38,7 +38,7 @@ rec {
           { key = "no-revision";
             # Make the revision metadata constant, in order to avoid needless retesting.
             # The human version (e.g. 21.05-pre) is left as is, because it is useful
-            # for external modules that test with e.g. nixosTest and rely on that
+            # for external modules that test with e.g. testers.nixosTest and rely on that
             # version number.
             config.system.nixos.revision = mkForce "constant-nixos-revision";
           }

pkgs/build-support/trivial-builders/test/references.nix

@@ -1,4 +1,4 @@
-{ lib, nixosTest, pkgs, writeText, hello, figlet, stdenvNoCC }:
+{ lib, testers, pkgs, writeText, hello, figlet, stdenvNoCC }:
 
 # -------------------------------------------------------------------------- #
 #
@@ -22,7 +22,7 @@ let
       lib.attrValues (import file { inherit pkgs; })
     );
 in
-nixosTest {
+testers.nixosTest {
   name = "nixpkgs-trivial-builders";
   nodes.machine = { ... }: {
     virtualisation.writableStore = true;

pkgs/test/nixos-functions/default.nix

@@ -1,7 +1,7 @@
 /*
 
 This file is a test that makes sure that the `pkgs.nixos` and
-`pkgs.nixosTest` functions work. It's far from a perfect test suite,
+`pkgs.testers.nixosTest` functions work. It's far from a perfect test suite,
 but better than not checking them at all on hydra.
 
 To run this test: