add specs for min_trust_to_create_tag set to staff and admin

spec/components/guardian_spec.rb

@@ -2624,37 +2624,72 @@ describe Guardian do
     context "tagging is enabled" do
       before do
         SiteSetting.tagging_enabled = true
-        SiteSetting.min_trust_to_create_tag = 3
         SiteSetting.min_trust_level_to_tag_topics = 1
       end
 
-      describe "can_create_tag" do
-        it "returns false if trust level is too low" do
-          expect(Guardian.new(trust_level_2).can_create_tag?).to be_falsey
+      context 'min_trust_to_create_tag is 3' do
+        before do
+          SiteSetting.min_trust_to_create_tag = 3
         end
 
-        it "returns true if trust level is high enough" do
-          expect(Guardian.new(trust_level_3).can_create_tag?).to be_truthy
+        describe "can_create_tag" do
+          it "returns false if trust level is too low" do
+            expect(Guardian.new(trust_level_2).can_create_tag?).to be_falsey
+          end
+
+          it "returns true if trust level is high enough" do
+            expect(Guardian.new(trust_level_3).can_create_tag?).to be_truthy
+          end
+
+          it "returns true for staff" do
+            expect(Guardian.new(admin).can_create_tag?).to be_truthy
+            expect(Guardian.new(moderator).can_create_tag?).to be_truthy
+          end
         end
 
-        it "returns true for staff" do
+        describe "can_tag_topics" do
+          it "returns false if trust level is too low" do
+            expect(Guardian.new(Fabricate(:user, trust_level: 0)).can_tag_topics?).to be_falsey
+          end
+
+          it "returns true if trust level is high enough" do
+            expect(Guardian.new(Fabricate(:user, trust_level: 1)).can_tag_topics?).to be_truthy
+          end
+
+          it "returns true for staff" do
+            expect(Guardian.new(admin).can_tag_topics?).to be_truthy
+            expect(Guardian.new(moderator).can_tag_topics?).to be_truthy
+          end
+        end
+      end
+
+      context 'min_trust_to_create_tag is "staff"' do
+        before do
+          SiteSetting.min_trust_to_create_tag = 'staff'
+        end
+
+        it "returns false if not staff" do
+          expect(Guardian.new(trust_level_4).can_create_tag?).to eq(false)
+        end
+
+        it "returns true if staff" do
           expect(Guardian.new(admin).can_create_tag?).to be_truthy
           expect(Guardian.new(moderator).can_create_tag?).to be_truthy
         end
       end
 
-      describe "can_tag_topics" do
-        it "returns false if trust level is too low" do
-          expect(Guardian.new(Fabricate(:user, trust_level: 0)).can_tag_topics?).to be_falsey
+      context 'min_trust_to_create_tag is "admin"' do
+        before do
+          SiteSetting.min_trust_to_create_tag = 'admin'
         end
 
-        it "returns true if trust level is high enough" do
-          expect(Guardian.new(Fabricate(:user, trust_level: 1)).can_tag_topics?).to be_truthy
+        it "returns false if not admin" do
+          expect(Guardian.new(trust_level_4).can_create_tag?).to eq(false)
+          expect(Guardian.new(moderator).can_create_tag?).to eq(false)
         end
 
-        it "returns true for staff" do
-          expect(Guardian.new(admin).can_tag_topics?).to be_truthy
-          expect(Guardian.new(moderator).can_tag_topics?).to be_truthy
+        it "returns true if admin" do
+          expect(Guardian.new(admin).can_create_tag?).to be_truthy
         end
       end
     end