plutosvg: Add cmake tester

pkgs/by-name/pl/plutosvg/package.nix

···
   cmake,
   ninja,
   plutovg,
+  enableFreetype ? false,
+  freetype,
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "plutosvg";
···
     ninja
     validatePkgConfig
   ];
+
   propagatedBuildInputs = [
     plutovg
+  ]
+  ++ lib.optional enableFreetype freetype;
+
+  cmakeFlags = [
+    (lib.cmakeBool "BUILD_SHARED_LIBS" (!stdenv.hostPlatform.isStatic))
+    (lib.cmakeBool "PLUTOSVG_ENABLE_FREETYPE" enableFreetype)
   ];
 
-  cmakeFlags = [ (lib.cmakeBool "BUILD_SHARED_LIBS" (!stdenv.hostPlatform.isStatic)) ];
-
-  passthru.tests.pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
+  passthru.tests = {
+    pkg-config = testers.testMetaPkgConfig finalAttrs.finalPackage;
+    cmake-config = testers.hasCmakeConfigModules {
+      package = finalAttrs.finalPackage;
+      moduleNames = [ "plutosvg" ];
+      versionCheck = true;
+    };
+  };
 
   passthru.updateScript = nix-update-script { };