tests: run populate's jq programs over lock files of both shapes

Depending on the version of Nix, lock files name subdirectories as
attribute dir or as query parameter dir of the URL.  The VM tests run
one version, so only one shape gets covered there.  The jq programs for
flakes move to pkgs/populate/flake-jq.nix, and a new test, jq, runs them
without VMs over lock files of both shapes, with follows, removed and
cyclic follows, and inputs given by relative paths.

1 files changed, 12 insertions, 1 deletions

diff --git a/tests/default.nix b/tests/default.nix
index ca409b3..a6b9356 100644
--- a/tests/default.nix
+++ b/tests/default.nix
@@ -1,7 +1,8 @@
 # NixOS VM tests for populate: one test per source type, one for features
 # spanning sources, one for edge cases of flakes, and one for writeDeploy's
 # arguments to nixos-rebuild.  Build all with nix-build tests, or one with,
-# e.g., nix-build tests -A flake.
+# e.g., nix-build tests -A flake.  jq runs populate's jq programs for flakes
+# without VMs.
 { pkgs ? import ../pkgs {} }:
 
 let
@@ -21,7 +22,17 @@ let
     agePath = "${pkgs.age}/bin/age";
     inherit gitHead gitFirst;
   };
+  flakeJq = import ../pkgs/populate/flake-jq.nix;
 in
   builtins.mapAttrs
     (name: scenarios: import ./vm.nix { inherit pkgs name scenarios gitHead; })
     scenarios
+  // {
+    # Lock files in the shapes different versions of Nix write.
+    jq = pkgs.runCommand "krops-jq" { nativeBuildInputs = [ pkgs.jq ]; } ''
+      sh ${./jq.sh} ${pkgs.linkFarm "krops-flake-jq" (map
+        (name: { name = "${name}.jq"; path = pkgs.writeText "${name}.jq" flakeJq.${name}; })
+        [ "selected" "selfIsRemote" "selfLocked" ])}
+      touch $out
+    '';
+  }