firefox: add container support

tests/modules/programs/firefox/default.nix

@@ -3,4 +3,5 @@
   firefox-state-version-19_09 = ./state-version-19_09.nix;
   firefox-deprecated-native-messenger = ./deprecated-native-messenger.nix;
   firefox-duplicate-profile-ids = ./duplicate-profile-ids.nix;
+  firefox-duplicate-container-ids = ./duplicate-container-ids.nix;
 }

tests/modules/programs/firefox/duplicate-container-ids.nix

@@ -0,0 +1,35 @@
+{ config, lib, ... }:
+
+{
+  imports = [ ./setup-firefox-mock-overlay.nix ];
+
+  config = lib.mkIf config.test.enableBig {
+    test.asserts.assertions.expected = [''
+      Must not have a Firefox container with an existing ID but
+        - ID 9 is used by dangerous, shopping''];
+
+    programs.firefox = {
+      enable = true;
+
+      profiles = {
+        my-profile = {
+          isDefault = true;
+          id = 1;
+
+          containers = {
+            "shopping" = {
+              id = 9;
+              color = "blue";
+              icon = "circle";
+            };
+            "dangerous" = {
+              id = 9;
+              color = "red";
+              icon = "circle";
+            };
+          };
+        };
+      };
+    };
+  };
+}

tests/modules/programs/firefox/profile-settings-expected-containers.json

@@ -0,0 +1 @@
+{"identities":[{"color":"yellow","icon":"circle","name":"shopping","public":true,"userContextId":6}],"lastUserContextId":6,"version":4}

tests/modules/programs/firefox/profile-settings.nix

@@ -1,7 +1,5 @@
 { config, lib, pkgs, ... }:
 
-with lib;
-
 {
   imports = [ ./setup-firefox-mock-overlay.nix ];
 
@@ -142,6 +140,17 @@ with lib;
           };
         };
       };
+
+      profiles.containers = {
+        id = 5;
+        containers = {
+          "shopping" = {
+            id = 6;
+            icon = "circle";
+            color = "yellow";
+          };
+        };
+      };
     };
 
     nmt.script = ''
@@ -155,6 +164,10 @@ with lib;
         home-files/.mozilla/firefox/test/user.js \
         ${./profile-settings-expected-user.js}
 
+      assertFileContent \
+        home-files/.mozilla/firefox/containers/containers.json \
+        ${./profile-settings-expected-containers.json}
+
       bookmarksUserJs=$(normalizeStorePaths \
         home-files/.mozilla/firefox/bookmarks/user.js)