Fix failing spec on ruby 3.3

Signed-off-by: Samuel Giddins <[email protected]>

lib/gemstash/version.rb

@@ -2,5 +2,5 @@
 
 # :nodoc:
 module Gemstash
-  VERSION = "2.7.1"
+  VERSION = "2.8.0"
 end

spec/integration_spec.rb

@@ -169,18 +169,15 @@
       end
 
       it "finds private gems when just the private source is configured", db_transaction: false do
-        skip "this doesn't work because Rubygems sends /specs.4.8.gz instead of /private/specs.4.8.gz"
         env = { "HOME" => env_dir }
-        expect(execute("gem", ["source", "-r", "https://rubygems.org/"], env: env)).to exit_success
-        expect(execute("gem", ["source", "-a", host], env: env)).to exit_success
+        expect(execute("gem", ["source", "-r", "https://rubygems.org/", "-a", host], env: env)).to exit_success
         expect(execute("gem", ["search", "-ar", "speaker"], env: env)).
           to exit_success.and_output(/speaker \(0.1.0\)/)
       end
 
       it "finds private gems when just the private source is configured with a trailing slash", db_transaction: false do
         env = { "HOME" => env_dir }
-        expect(execute("gem", ["source", "-r", "https://rubygems.org/"], env: env)).to exit_success
-        expect(execute("gem", ["source", "-a", "#{host}/"], env: env)).to exit_success
+        expect(execute("gem", ["source", "-r", "https://rubygems.org/", "-a", "#{host}/"], env: env)).to exit_success
         expect(execute("gem", ["search", "-ar", "speaker"], env: env)).
           to exit_success.and_output(/speaker \(0.1.0\)/)
       end

spec/support/exec_helpers.rb

@@ -144,7 +144,10 @@ def exec_in_process(binstub)
 #{@expected_output}
 
 but instead it output:
-#{actual.output}"
+#{actual.output}
+
+and the error was:
+#{actual.err}"
     else
       "expected '#{actual.display_command}' in '#{actual.dir}' to exit with a success code, but it didn't.
 the command output was:
@@ -154,4 +157,12 @@ def exec_in_process(binstub)
 #{actual.err}"
     end
   end
+
+  failure_message_when_negated do |actual|
+    "expected '#{actual.display_command}' in '#{actual.dir}' to not exit with a success code, but it did
+#{actual.output}
+
+and the error was:
+#{actual.err}"
+  end
 end