fix #6147 when --parseable and --groups used together

bundler/lib/bundler/cli/outdated.rb

@@ -111,9 +111,7 @@ def run
           end.compact
 
           if options[:parseable]
-            relevant_outdated_gems.each do |gems|
-              print_gems(gems)
-            end
+            print_gems(relevant_outdated_gems)
           else
             print_gems_table(relevant_outdated_gems)
           end

bundler/spec/bundler/cli_spec.rb

@@ -129,6 +129,52 @@ def out_with_macos_man_workaround
     end
   end
 
+  describe "bundle outdated" do
+    let(:run_command) do
+      bundle "install"
+
+      bundle "outdated #{flags}", raise_on_error: false
+    end
+
+    before do
+      gemfile <<-G
+        source "#{file_uri_for(gem_repo1)}"
+        gem "rack", '0.9.1'
+      G
+    end
+
+    context "with --groups flag" do
+      let(:flags) { "--groups" }
+
+      it "prints a message when there are outdated gems" do
+        run_command
+
+        expect(out).to include("Gem   Current  Latest  Requested  Groups")
+        expect(out).to include("rack  0.9.1    1.0.0   = 0.9.1    default")
+      end
+    end
+
+    context "with --parseable" do
+      let(:flags) { "--parseable" }
+
+      it "prints a message when there are outdated gems" do
+        run_command
+
+        expect(out).to include("rack (newest 1.0.0, installed 0.9.1, requested = 0.9.1)")
+      end
+    end
+
+    context "with --groups and --parseable" do
+      let(:flags) { "--groups --parseable" }
+
+      it "prints a simplified message when there are outdated gems" do
+        run_command
+
+        expect(out).to include("rack (newest 1.0.0, installed 0.9.1, requested = 0.9.1)")
+      end
+    end
+  end
+
   describe "printing the outdated warning" do
     shared_examples_for "no warning" do
       it "prints no warning" do