filtered outdated msg shouldn't say 'up to date'

Fixes rubygems#5076. When a filter option is in use and it filters out
everything in the requested categories, it's safer to say there were no
%{level} updates to display rather than "Bundle up to date!"

Tracking an additional local variable with the exact info to know that
even when filtered there was nothing to update anyway I didn't feel was
worth it with the current design.

lib/bundler/cli/outdated.rb

@@ -94,7 +94,7 @@ def run
       end
 
       if outdated_gems_list.empty?
-        Bundler.ui.info "Bundle up to date!\n" unless options[:parseable]
+        display_nothing_outdated_message
       else
         unless options[:parseable]
           if options[:pre]
@@ -141,6 +141,18 @@ def run
 
   private
 
+    def display_nothing_outdated_message
+      unless options[:parseable]
+        filter_options = options.keys & %w(filter-major filter-minor filter-patch)
+        if filter_options.any?
+          display = filter_options.map {|o| o.sub("filter-", "") }.join(" or ")
+          Bundler.ui.info "No #{display} updates to display.\n"
+        else
+          Bundler.ui.info "Bundle up to date!\n"
+        end
+      end
+    end
+
     def print_gem(current_spec, active_spec, dependency, groups, options_include_groups)
       spec_version = "#{active_spec.version}#{active_spec.git_version}"
       current_version = "#{current_spec.version}#{current_spec.git_version}"

spec/commands/outdated_spec.rb

@@ -326,7 +326,7 @@ def test_group_option(group = nil, gems_list_size = 1)
         bundle "outdated --strict --filter-patch"
 
         expect(out).to_not include("activesupport (newest")
-        expect(out).to include("(newest 0.0.5, installed 0.0.3)")
+        expect(out).to include("(newest 0.0.5, installed 0.0.3")
       end
 
       it "only reports gems that match requirement and minor filter level" do
@@ -344,7 +344,7 @@ def test_group_option(group = nil, gems_list_size = 1)
         bundle "outdated --strict --filter-minor"
 
         expect(out).to_not include("activesupport (newest")
-        expect(out).to include("(newest 0.1.5, installed 0.0.3)")
+        expect(out).to include("(newest 0.1.5, installed 0.0.3")
       end
 
       it "only reports gems that match requirement and major filter level" do
@@ -362,7 +362,7 @@ def test_group_option(group = nil, gems_list_size = 1)
         bundle "outdated --strict --filter-major"
 
         expect(out).to_not include("activesupport (newest")
-        expect(out).to include("(newest 1.1.5, installed 0.0.3)")
+        expect(out).to include("(newest 1.1.5, installed 0.0.3")
       end
     end
   end
@@ -472,7 +472,7 @@ def test_group_option(group = nil, gems_list_size = 1)
   shared_examples_for "no version updates are detected" do
     it "does not detect any version updates" do
       subject
-      expect(out).to include("Bundle up to date!")
+      expect(out).to include("updates to display.")
       expect(out).to_not include("ERROR REPORT TEMPLATE")
       expect(out).to_not include("activesupport (newest")
       expect(out).to_not include("weakling (newest")
@@ -598,7 +598,7 @@ def test_group_option(group = nil, gems_list_size = 1)
       it "shows nothing when patching and filtering to minor" do
         bundle "outdated --patch --filter-minor"
 
-        expect(out).to include("Bundle up to date!") # it shouldn't say this, but will get back to this with: #5076
+        expect(out).to include("No minor updates to display.")
         expect(out).not_to include("patch (newest")
         expect(out).not_to include("minor (newest")
         expect(out).not_to include("major (newest")