1 files changed, 30 insertions, 5 deletions
diff --git a/spec/bundler/commands/update_spec.rb b/spec/bundler/commands/update_spec.rb
index 7016c3e19f..7a0d435860 100644
--- a/spec/bundler/commands/update_spec.rb
+++ b/spec/bundler/commands/update_spec.rb
@@ -659,21 +659,21 @@ RSpec.describe "bundle update" do
 
       expect(last_command).to be_failure
       expect(err).to match(/You are trying to install in deployment mode after changing.your Gemfile/m)
-      expect(err).to match(/freeze \nby running `bundle config unset deployment`./m)
+      expect(err).to match(/freeze \nby running `bundle config set frozen false`./m)
     end
 
-    it "should suggest different command when frozen is set globally", :bundler => "< 3" do
+    it "should fail loudly when frozen is set globally" do
       bundle "config set --global frozen 1"
       bundle "update", :all => true, :raise_on_error => false
       expect(err).to match(/You are trying to install in deployment mode after changing.your Gemfile/m).
-        and match(/freeze \nby running `bundle config unset frozen`./m)
+        and match(/freeze \nby running `bundle config set frozen false`./m)
     end
 
-    it "should suggest different command when frozen is set globally", :bundler => "3" do
+    it "should fail loudly when deployment is set globally" do
       bundle "config set --global deployment true"
       bundle "update", :all => true, :raise_on_error => false
       expect(err).to match(/You are trying to install in deployment mode after changing.your Gemfile/m).
-        and match(/freeze \nby running `bundle config unset deployment`./m)
+        and match(/freeze \nby running `bundle config set frozen false`./m)
     end
 
     it "should not suggest any command to unfreeze bundler if frozen is set through ENV" do
@@ -1451,6 +1451,31 @@ RSpec.describe "bundle update --bundler" do
       expect(out).to include("Using bundler 2.3.9")
     end
   end
+
+  it "prints an error when trying to update bundler in frozen mode" do
+    system_gems "bundler-2.3.9"
+
+    gemfile <<~G
+      source "#{file_uri_for(gem_repo2)}"
+    G
+
+    lockfile <<-L
+      GEM
+        remote: #{file_uri_for(gem_repo2)}/
+        specs:
+
+      PLATFORMS
+        ruby
+
+      DEPENDENCIES
+
+      BUNDLED WITH
+         2.1.4
+    L
+
+    bundle "update --bundler=2.3.9", :env => { "BUNDLE_FROZEN" => "true" }
+    expect(err).to include("Cannot write a changed lockfile while frozen")
+  end
 end
 
 # these specs are slow and focus on integration and therefore are not exhaustive. unit specs elsewhere handle that.