Provide a link to existing domain block when trying to block an already-blocked domain (#10663)

* When trying to block an already-blocked domain, provide a link to the block

* Fix styling for links in flash messages

* Allow blocks to be upgraded but not downgraded

1 files changed, 31 insertions, 0 deletions

diff --git a/spec/models/domain_block_spec.rb b/spec/models/domain_block_spec.rb
index 89cadccfe..0035fd0ff 100644
--- a/spec/models/domain_block_spec.rb
+++ b/spec/models/domain_block_spec.rb
@@ -36,4 +36,35 @@ RSpec.describe DomainBlock, type: :model do
       expect(DomainBlock.blocked?('domain')).to eq false
     end
   end
+
+  describe 'stricter_than?' do
+    it 'returns true if the new block has suspend severity while the old has lower severity' do
+      suspend = DomainBlock.new(domain: 'domain', severity: :suspend)
+      silence = DomainBlock.new(domain: 'domain', severity: :silence)
+      noop = DomainBlock.new(domain: 'domain', severity: :noop)
+      expect(suspend.stricter_than?(silence)).to be true
+      expect(suspend.stricter_than?(noop)).to be true
+    end
+
+    it 'returns false if the new block has lower severity than the old one' do
+      suspend = DomainBlock.new(domain: 'domain', severity: :suspend)
+      silence = DomainBlock.new(domain: 'domain', severity: :silence)
+      noop = DomainBlock.new(domain: 'domain', severity: :noop)
+      expect(silence.stricter_than?(suspend)).to be false
+      expect(noop.stricter_than?(suspend)).to be false
+      expect(noop.stricter_than?(silence)).to be false
+    end
+
+    it 'returns false if the new block does is less strict regarding reports' do
+      older = DomainBlock.new(domain: 'domain', severity: :silence, reject_reports: true)
+      newer = DomainBlock.new(domain: 'domain', severity: :silence, reject_reports: false)
+      expect(newer.stricter_than?(older)).to be false
+    end
+
+    it 'returns false if the new block does is less strict regarding media' do
+      older = DomainBlock.new(domain: 'domain', severity: :silence, reject_media: true)
+      newer = DomainBlock.new(domain: 'domain', severity: :silence, reject_media: false)
+      expect(newer.stricter_than?(older)).to be false
+    end
+  end
 end